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Start on Cloud

A unified distributed database ready for your transactional, analytical, and AI workloads.

DEPLOY YOUR WAY

OceanBase Cloud

The best way to deploy and scale OceanBase

OceanBase Enterprise

Run and manage OceanBase on your infra

TRY OPEN SOURCE

OceanBase Community Edition

The free, open-source distributed database

OceanBase seekdb

Open source AI native search database

Customer Stories

Real-world success stories from enterprises across diverse industries.

View All
BY USE CASES

Mission-Critical Transactions

Global & Multicloud Application

Elastic Scaling for Peak Traffic

Real-time Analytics

Active Geo-redundancy

Database Consolidation

Comprehensive knowledge hub for OceanBase.

Blog

Live Demos

Training & Certification

Documentation

Official technical guides, tutorials, API references, and manuals for all OceanBase products.

View All
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OceanBase Database

SQL - V4.4.2

  • What's New
  • What is OceanBase Database
    • Overview
    • Feature differences between the Enterprise Edition and Community Edition
    • System architecture
    • Compatibility with Oracle
      • Overview
      • SQL data types
      • Built-in functions
      • System views
    • Compatibility with MySQL
    • Limitations
  • Get Started
    • Quick start with OceanBase Database Community Edition
    • Learn OceanBase SQL
      • Before you begin
      • Basic SQL operations (MySQL-compatible mode)
      • Basic SQL operations (Oracle-compatible mode)
    • Build a sample application (MySQL-compatible mode)
      • Build a Python application
      • Build a Java application
      • Build a C application
      • Build a Go application
    • Build a sample application (Oracle-compatible mode)
      • Build a Java application
      • Build a C application
    • Try out advanced features of OceanBase Database
      • Scalable OLTP
        • Run the TPC-C benchmark in OceanBase Database
        • Try out the hot row update capability of OceanBase Database
      • Try out operational OLAP
      • Try out parallel import and data compression
      • Try out the multi-tenant feature
  • Develop
    • Develop applications (MySQL-compatible mode)
      • Connect to OceanBase Database
        • Overview
        • Connect to an OceanBase tenant by using the mysql client
        • Connect to an OceanBase tenant by using OBClient
        • Connect to OceanBase Database by using ODC
        • Connect to OceanBase Database by using DBeaver
        • Connect to OceanBase Database by using Navicat
        • Use database connection pool
          • Connection pool configuration
          • Tomcat
          • c3p0
          • Proxool
          • HikariCP
          • DBCP
          • Commons Pool
          • Druid
          • JDBC
      • Sample applications
        • Java
          • Spring Boot
          • Spring Batch
          • Spring JDBC
          • Spring Data JPA
          • Hibernate
          • MyBatis
          • Connector/J
          • TestContainers
        • Python
          • mysqlclient
          • PyMySQL
          • MySQL-connector-python
          • SQLAlchemy
          • Django
          • peewee
        • C
          • MySQL Connector/C
        • Go
          • Go-SQL-Driver/MySQL
          • GORM
        • PHP
          • EXT
          • MySQLi
          • PDO
        • Rust
          • Connect to OceanBase Database by using Rust
          • Connect to OceanBase Database by using SeaORM
        • Ruby
          • ActiveRecord
          • mysql2
          • Sequel
      • Plan database objects
        • Create a database
        • Create a table group
        • Create a table
        • Create an index
        • Create an external table
      • Write data
        • Insert data
        • Update data
        • Delete data
        • Replace data
        • Generate test data in batches
      • Read data
        • Single-table queries
        • Join tables
          • INNER JOIN queries
          • FULL JOIN queries
          • LEFT JOIN queries
          • RIGHT JOIN queries
          • Subqueries
          • Lateral derived table
        • Use operators and functions in queries
          • Use arithmetic operators in queries
          • Use numerical functions in queries
          • Use string concatenation operators in queries
          • Use string functions in queries
          • Use datetime functions in queries
          • Use type conversion functions in queries
          • Use aggregate functions in queries
          • Use NULL-related functions in queries
          • Use the CASE conditional operator in queries
          • Lock query results with SELECT FOR UPDATE
          • Use the SELECT ... LOCK IN SHARE MODE statement to lock query results
          • Use regular expressions in queries
        • Use a DBLink in queries
        • Set operations
      • Transactions
        • Transaction management overview
        • Start a transaction
        • Savepoints
          • Mark a savepoint
          • Roll back a transaction to a savepoint
          • Release a savepoint
        • Commit a transaction
        • Roll back a transaction
      • Application errors
        • Troubleshooting guidelines
          • Error code introduction
          • Error handling specifications for MySQL-compatible applications
        • Common errors and troubleshooting practices
          • Disconnected from the server, with ERROR 2013 reported
          • Idle transaction timed out, with ERROR 6002 reported
          • Transaction timed out, with ERROR 4012 reported
          • User locked, with ERROR 3118 reported
          • Incorrect user password, with ERROR 1045 reported
          • Table already exists, with ERROR 1050 reported
          • Table does not exist, with ERROR 1146 reported
          • Duplicate data inserted, with ERROR 1062 reported
          • ERROR 1215 reported in foreign key addition
          • Data truncated while being inserted, with ERROR 1265 reported
    • Develop applications (Oracle-compatible mode)
      • Connect to OceanBase Database
        • Overview of connection methods
        • Connect to an OceanBase tenant by using OBClient
        • Connect to OceanBase Database by using ODC
        • Connect to OceanBase Database using DBeaver (Oracle-compatible mode)
        • Connect to OceanBase Database by using Navicat (Oracle-compatible mode)
        • Use database connection pool
          • Database Connection Pool Configuration
          • Tomcat
          • c3p0
          • Proxool
          • HikariCP
          • DBCP
          • Commons Pool
          • Druid
      • Sample applications
        • Java
          • OceanBase Connector/J
          • Spring Boot
          • Spring Batch
          • Spring Data JDBC
          • Spring Data JPA
          • Hibernate
          • MyBatis
          • JFinal
        • Python
          • Python Driver Oracle Mode
        • C/C++
          • OceanBase Connector/C
          • OceanBase Connector/ODBC
          • SqlSugar
      • Plan database objects
        • Create a table group
        • Create a table
        • Create an index
        • Create an external table
      • Write data
        • Insert data
        • Update data
        • Delete data
        • Replace data
        • Generate test data in batches
      • Read data
        • Single-table query
        • Join tables
          • INNER JOIN queries
          • FULL JOIN queries
          • LEFT JOIN queries
          • RIGHT JOIN queries
          • Subqueries
          • Lateral derived tables
        • Use operators and functions in queries
          • Use arithmetic operators in queries
          • Use numerical functions in queries
          • Use string concatenation operators in queries
          • Use string functions in queries
          • Use datetime functions in queries
          • Use type conversion functions in queries
          • Use aggregate functions in queries
          • Use NULL-related functions in queries
          • Use CASE functions in queries
          • Use the SELECT...FOR UPDATE statement to lock query results
        • Use a DBLink in queries
        • Set operations
        • Pagination
      • Transactions
        • Transaction management overview
        • Start a transaction
        • Savepoints
          • Mark a savepoint
          • Roll back a transaction to a savepoint
        • Commit a transaction
        • Roll back a transaction
      • Application errors
        • Troubleshooting guidelines
          • About error codes
          • Error handling specifications for Oracle-compatible applications
  • Deploy
    • Deployment overview
    • HA deployment solutions for OceanBase clusters
    • Deploy OceanBase Database Enterprise Edition
      • Deployment process
      • Before deployment
        • Prepare servers
        • Configure servers
        • Prepare installation packages
        • Deploy OAT
      • Deploy through GUI
        • Configure deployment environment using OAT
          • Add a server
        • Deploy OCP
          • OCP deployment instructions
          • Upload installation packages
          • Create MetaDB
          • Deploy OCP
        • Deploy OceanBase clusters using OCP
          • Deploy a two-replica OceanBase cluster with the arbitration service by using OCP
          • Deploy a single-replica OceanBase cluster by using OCP
          • Deploy a three-replica OceanBase cluster by using OCP
        • (Optional) Deploy ODP
      • Deploy through CLI
        • Configure deployment environment
          • Initialize OBServer nodes by using oatcli
          • (Optional) Configure the clock source
        • Deploy OceanBase clusters using CLI
          • Deploy a two-replica OceanBase cluster with the arbitration service by using the CLI
          • Deploy a single-replica OceanBase cluster by using the CLI
          • Deploy a three-replica OceanBase cluster by using the CLI
        • (Optional) Deploy ODP
      • Deploy the OceanBase Database Java SDK
    • Deploy OceanBase Database Community Edition
      • Deployment overview of OceanBase Database Community Edition
      • Deploy locally
        • Hardware and software requirements
        • Before deployment
          • (Optional) Create a user
          • (Optional) Set password-free SSH login
          • (Optional) Configure the clock source
          • (Optional) Perform disk planning
          • (Optional) Configure limits.conf
          • (Optional) Configure sysctl.conf
          • (Optional) Disable the firewall and SELinux
        • Deploy through GUI
          • Deploy an OceanBase cluster through the GUI of obd
          • Deploy an OceanBase cluster through the GUI of OCP
        • Deploy OceanBase Database in a production environment by using the CLI
        • Deploy OceanBase Database by using systemd
        • Deploy OceanBase Database in a container environment
      • Deploy an OceanBase cluster in a Kubernetes environment
      • Deploy OceanBase Desktop
    • Clean up an OceanBase cluster
    • Recommended configurations
  • Migrate
    • Data migration Overview
    • Migrate from MySQL databases to OceanBase Database
      • Use OMS to migrate data from a MySQL database to a MySQL-compatible tenant of OceanBase Database
      • Use mydumper and myloader to migrate data from a MySQL database to OceanBase Database
      • Use DBCAT to migrate schemas from a MySQL database to OceanBase Database
      • Use DataX to migrate table data from a MySQL database to OceanBase Database
      • Use CloudCanal to migrate data from a MySQL database to OceanBase Database
      • Use Canal to synchronize data from a MySQL database to OceanBase Database
      • Use Flink CDC to synchronize data from a MySQL database to OceanBase Database
      • Use ChunJun to migrate data from a MySQL database to OceanBase Database
    • Migrate from OceanBase Database to MySQL databases
      • Use OMS to migrate data from a MySQL-compatible tenant of OceanBase Database to a MySQL database
      • Use OMS to migrate incremental data from an Oracle-compatible tenant of OceanBase Database to a MySQL database
      • Use DBCAT to migrate schemas from OceanBase Database to a MySQL database
      • Use DataX to migrate table data from OceanBase Database to a MySQL database
      • Use Canal to synchronize data from OceanBase Database to a MySQL database
      • Use CloudCanal to migrate data from OceanBase Database to a MySQL database
      • Use Flink CDC to migrate data from OceanBase Database to a MySQL database
      • Use ChunJun to migrate data from OceanBase Database to a MySQL database
    • Migrate from Oracle databases to OceanBase Database
      • Use OMS to migrate data from an Oracle database to a MySQL-compatible tenant of OceanBase Database
      • Use OMS to migrate data from an Oracle database to an Oracle-compatible tenant of OceanBase Database
      • Use DBCAT to migrate schemas from an Oracle database to OceanBase Database
      • Use DataX to migrate table data from an Oracle database to OceanBase Database
    • Migrate from OceanBase Database to Oracle databases
      • Use OMS to migrate data from an Oracle-compatible tenant of OceanBase Database to an Oracle database
      • Use DBCAT to migrate schemas from OceanBase Database to an Oracle database
      • Use DataX to migrate table data from OceanBase Database to an Oracle database
    • Migrate from DB2 databases to OceanBase Database
      • Use OMS to migrate data from a DB2 LUW database to a MySQL-compatible tenant of OceanBase Database
      • Use OMS to migrate data from a DB2 LUW database to an Oracle-compatible tenant of OceanBase Database
      • Use DBCAT to migrate table schemas from a DB2 LUW database to OceanBase Database
    • Migrate from OceanBase Database to DB2 databases
      • Use OMS to migrate data from a MySQL-compatible tenant of OceanBase Database to a DB2 LUW database
      • Use OMS to migrate data from an Oracle-compatible tenant of OceanBase Database to a DB2 LUW database
    • Migrate from TiDB databases to OceanBase Database
      • Use OMS to migrate data from a TiDB database to a MySQL-compatible tenant of OceanBase Database
    • Migrate from PostgreSQL databases to OceanBase Database
      • Use OMS to migrate data from a PostgreSQL database to a MySQL-compatible tenant of OceanBase Database
    • Migrate from CSV files to OceanBase Database
      • Use DataX to migrate CSV files to OceanBase Database
      • Import data by using the LOAD DATA statement
    • Import data from SQL files to OceanBase Database
    • Migrate data between OceanBase Database
      • Use OMS to migrate data from an OceanBase tenant to another of the same type
      • Use OMS to create an active-active disaster recovery project for OceanBase Database tenants of the same type
      • Use obloader & obdumper to migrate data between MySQL-compatible tenants in OceanBase Database
      • Use obloader & obdumper to migrate data from a MySQL-compatible tenant to an Oracle-compatible tenant in OceanBase Database
      • Use obloader & obdumper to migrate data between Oracle-compatible tenants in OceanBase Database
      • Use obloader & obdumper to migrate data from an Oracle-compatible tenant to a MySQL-compatible tenant in OceanBase Database
    • Migrate data using SQL statements
      • Migrate data between tables
      • Migrate resource units
      • Export data using the OUTFILE statement
    • Overview of direct load
  • Manage
    • Log in to an OceanBase tenant
    • Manage clusters
      • Cluster introduction
      • Cluster parameters
      • Common cluster operations
        • View a zone
        • View a node
        • Restart a node
        • Add a node
        • Delete a node
        • Isolate a node
        • Replace a node
        • Start a zone
        • Add a zone
        • Delete a zone
        • Modify a zone
        • Isolate a zone
        • View cluster parameters
        • Modify cluster parameters
        • Reset cluster parameters
        • Upgrade a cluster
          • OceanBase Database Enterprise Edition
            • Upgrade overview
            • Upgrade an arbitration service
            • Upgrade an OceanBase cluster
            • Check upgrade results
          • OceanBase Database Community Edition
            • Upgrade OceanBase Database by using obd
      • Troubleshoot common problems
        • Failures of a minority of nodes
        • Failures of the majority of nodes
    • Manage tenants
      • Tenant introduction
      • Tenant capacity
      • Tenant types
      • User tenant introduction
      • Tenant system variables
      • Common tenant operations
        • Create a tenant
        • Resource isolation
          • Resource isolation overview
          • Manage resource isolation (Oracle-compatible mode)
            • Configure cgroups
            • Configure global CPU resource isolation for frontend and backend tasks
            • Calibrate the disk performance
            • Configure resource isolation within a tenant
            • Update a plan directive
            • Delete a plan directive
            • Delete a resource management plan
            • Delete a resource group
            • Clear cgroup configurations
          • Manage resource isolation (MySQL-compatible mode)
            • Configure cgroups
            • Configure global CPU resource isolation for foreground and background tasks
            • Calibrate the disk performance
            • Configure resource isolation within a tenant
            • Update resource management plan directive
            • Delete a plan directive
            • Delete a resource management plan
            • Delete a resource group
            • Clear cgroup configurations
          • Example configuration for resource isolation of background tasks
        • View tenant and resource information
        • View and set the tenant allowlist
        • View system variables of a tenant
        • Modify system variables of a tenant
        • Scale in/out
          • Introduction to scaling in and out
          • Resource planning for tenant scale-in and scale-out
          • Tenant pre-scaling
          • Modify the unit config for a tenant
          • Adjust the unit number for tenant scaling in and out
          • Modify the number of primary zones for a tenant
          • Example of smooth scaling in and out
        • Modify attributes of a resource pool
        • Modify attributes of a tenant
        • Lock and unlock a tenant
        • Clone a tenant
        • Cancel tenant cloning
        • Drop a tenant
        • Restore a tenant
        • Rename a tenant
        • Manage resource pools
          • View resource pools
          • Allocate a resource pool to a tenant
          • Remove a resource pool from a tenant
          • Merge and split resource pools
          • Drop a resource pool
        • Manage unit configs
          • Query resource specifications (unit configs)
          • Modify resource specification (unit config)
          • Delete resource specification (unit config)
        • Manage services
          • Create a service
          • Query the service status
          • Start a service
          • Stop a service
          • Delete a service
    • Manage log streams
      • Create a log stream
      • Modify a log stream
    • Manage replicas
      • Replica introduction
      • Use columnstore replicas
      • Replica distribution
        • Locality overview
        • Common locality operations
          • View locality
          • Modify locality
          • Add replicas
          • Reduce replicas
          • Change the replica type
          • Adjust replica distribution
          • View the locality change history
          • Migrate replicas
          • Modify the number of Paxos replicas of a log stream
          • Cancel a replica task
      • Traffic distribution
      • Data distribution
    • Data load balancing
      • Overview of data load balancing
      • Transfer partitions
      • Cancel a "Transfer Partition" task
      • Cancel a load balancing job
      • Pause and resume a load balancing job
      • Table group weight management
        • Aggregation of user tables in a database
        • Set table group weights
        • Clear table group weights
        • Application scenarios of table group weight balancing
      • Partition weight management
        • Set partition weights
        • Clear partition weights
      • Partition balancing
        • Configure a scheduled partition balance task
        • Manually trigger partition balancing
        • View the configuration of the scheduled partition balancing task
        • View the trigger history of the scheduled partition balancing task
        • View the partition balancing tasks in the background
        • View the history of partition balancing tasks in the background
      • Isolating GTS for high availability: a practical example
    • High availability
      • High availability overview
      • Multi-replica disaster recovery
        • Data link introduction
        • Proxy layer high availability
        • Database-level high availability
        • Disaster recovery architecture and levels
      • Physical standby database disaster recovery
        • Physical standby database overview
        • Limitations
        • Create a standby tenant
          • Preparations before creating standby tenants
          • Create an empty standby tenant
          • Create a standby tenant by using the backup and restore (with complete logs) feature
          • Create a standby tenant by using the BACKUP DATABASE PLUS ARCHIVELOG feature
        • Log transmission service
          • Log transmission service overview
          • Configure log transmission service
            • Set a log restore source
            • Specify a log restore endpoint
          • View log restore source information
          • View the log synchronization progress
          • Pause or resume log synchronization
          • Optimize the log synchronization performance
          • Set the log synchronization bandwidth limit
          • Set log synchronization compression
        • Log storage service
        • Switch roles
          • Overview of tenant roles
          • Switchover
          • Failover
        • Delete a primary or standby tenant
      • Arbitration high availability
        • Arbitration service overview
        • Enable the arbitration service for a tenant
        • Disable the arbitration service for a tenant
        • Modify the log stream downgrade control time
        • Query log stream upgrade and downgrade information
        • Replace the arbitration service for a cluster
        • Remove the arbitration service for a cluster
        • Clear residual cluster information
      • Manage recycle bin
        • Recycle bin overview
        • Enable or disable the recycle bin
        • View objects in the recycle bin
        • Restore objects from the recycle bin
        • Purge the recycle bin
      • Flashback queries
    • Security and permissions
      • Overview of security and privileges
      • Identification and authentication
        • MySQL-compatible mode
          • Identity authentication
          • Password complexity
          • Login failure processing
        • Oracle-compatible mode
          • Identity authentication
          • Password complexity
          • Login failure processing
      • Access control
        • Access control overview
        • Users and permissions
          • Overview of users and privileges
          • MySQL-compatible mode
            • Privilege types in MySQL-compatible mode
            • Create a user
            • Grant direct privileges
            • Privilege delegation
            • Role management
              • Overview
              • Create a role
              • Grant privileges to a role
              • Grant a role to a user or another role
              • Activate a role
              • View roles
              • Revoke privileges from a role
              • Revoke a role from a user or another role
              • Drop a role
            • Grant indirect privileges
            • View user privileges
            • Revoke privileges
            • Lock or unlock a user
            • Drop a user
          • Oracle-compatible mode
            • Privilege types in Oracle-compatible mode
            • Create a user
            • View the information of a user
            • Grant direct privileges
            • Privilege delegation
            • Manage roles
              • Overview of role management
              • Create a role
              • Grant a role to another role
              • Grant a role to a user
              • Activate or deactivate roles for a user
              • View roles
              • Modify a role
              • Revoke a role
              • Drop a role
            • Grant indirect privileges
            • View user privileges
            • Revoke privileges
            • Use a proxy user
            • Lock or unlock a user
            • Drop a user
        • Network security access control
        • RPC connection authentication
        • Row-level access control
      • Data encryption
        • Data encryption overview
        • Data transfer encryption
          • Data transmission encryption overview
          • OBServer transmission encryption
          • ODP transmission encryption
        • Tenant master key management
          • Overview of tenant master keys
          • Generate a tenant master key (MySQL-compatible mode)
          • Generate a tenant master key (Oracle-compatible mode)
        • Transparent data encryption
          • Database transparent encryption overview
          • Transparent data encryption (MySQL-compatible mode)
            • Enable TDE for new tables
            • Enable TDE for existing tables
            • Decrypt a table
          • Transparent data encryption (Oracle-compatible mode)
            • Enable TDE for new tables
            • Enable TDE for existing tables
            • Decrypt a table
        • Column encryption
          • Overview of column encryption
          • Column encryption (MySQL-compatible mode)
            • Create a column encryption rule
            • Column encryption privilege management
          • Column encryption (Oracle-compatible mode)
            • Create a column encryption rule
            • Column encryption privilege management
          • Frequently asked questions about column encryption
      • Security audit
        • Security audit overview
        • MySQL-compatible mode
          • Enable security auditing
          • Set auditing rules
          • View auditing records
          • Disable security auditing
        • Oracle-compatible mode
          • Enable security auditing
          • Set and view auditing rules
          • View auditing records
          • Audit user logins
          • Audit user operations
          • Audit specified database objects
    • Backup and restore
      • Overview of physical backup and restore
      • Experience physical backup and restore with simplified deployment
      • Deploy NFS
      • Log archive
        • Overview of log archiving
        • Prepare for log archiving
        • Enable ARCHIVELOG
        • Suspend archiving
        • Disable ARCHIVELOG
        • View information about pieces
        • View the archiving progress
        • View the archiving history
        • View archiving parameter settings
        • Change the archive destination
        • Clear the archive path configuration
        • Views related to log archiving
      • Data backup
        • Overview
        • Prepare for backup
        • Initiate a full data backup job
        • Initiate an incremental data backup job
        • Back up parameters
        • Stop a backup job
        • View the data backup progress
        • View the data backup history
        • View parameters related to data backup
        • Modify the source-side backup path configuration
        • Change the backup destination
        • Views related to data backup
      • Update `access_id` and `access_key` information for the backup or archive path
      • Clear backup data
        • Automatically clear backup data
          • Automatically clean up expired backups
          • Delete a cleanup policy
        • Manually clear backup data
          • Manually trigger the cleanup of expired backups
          • Manually clean up specified backup or archive data
          • Manually clear the backup path or archive path
        • Cancel a cleanup task
        • Query the backup cleanup progress
        • View the results of backup cleanup
        • Backup cleanup parameter
        • Views related to backup cleanup
      • Restore data
        • Preparations
        • Perform physical restore
        • Perform restore from the specified paths
        • Cancel physical restore
        • View the physical restore progress
        • View physical restore results
        • Replay logs to a standby tenant
        • Convert a standby tenant into primary tenant
        • Upgrade a tenant after restore
        • Parameters related to physical restore
        • Views related to physical restore
      • Restore by table
        • Overview of table-level restore
        • Preparations before table-level restore
        • Perform table-level restore
        • Schema restore after table-level restore
        • Cancel table-level restore
        • Check the progress of table-level restore
        • Check the results of table-level restore
        • Parameters related to table-level restore
        • Views related to table-level restore
      • Backup and restore performance tuning
      • Example of configuring the source backup and archive paths
      • Appendix: S3 path format
    • Monitor
      • Monitoring overview
      • Metrics
        • System monitoring
          • System monitoring metrics overview
          • SYSSTAT metrics
          • Wait events
          • Latch events
        • SQL monitoring
          • SQL monitoring overview
          • SQL audit
          • Execution plans
      • Cases
    • Logs
      • Overview
      • Log levels
      • Log interpretation
      • Log stability
      • Log control
      • Log compression and decompression
      • Log metrics
      • Alert logs
      • View logs
        • Search for the logs of a specific SQL request
        • Query the log of a previous SQL request by using the SQL Trace feature
    • Routine inspection
      • Routine inspection overview
      • Check cluster parameters
      • Check host information
      • Check tenant resource usage
      • Check cluster resource usage
      • Check OBServer status
      • Check the NTP offset
      • Deadlock detection
      • End-to-end tracing
        • End-to-end tracing overview
        • End-to-end tracing process
        • End-to-end tracing methods
        • Show end-to-end tracing information
        • Quick start: End-to-end diagnosis with obdiag
    • Performance tuning
      • Performance tuning overview
      • Identify bottlenecks on the data link
      • Identify bottlenecks within components
        • ODP performance bottlenecks
        • ODP performance analysis
        • OBServer performance bottlenecks
          • OBServer performance issues overview
          • Non-optimal plan
            • Non-optimal plan
            • Buffer tables
            • Plan optimality for account size skew
          • Hard parsing issues
          • Capacity issues
          • Internal wait events
      • SQL tuning
        • SQL tuning system
        • Execution plan optimization
          • Statistical information and row estimation
            • Overview of statistics and row estimation mechanism
            • Statistical information
              • Overview
              • Collect statistical information
                • Overview
                • Manually collect statistics
                • Automatic statistics collection
              • Query statistics
              • Manage statistical information
                • Overview
                • Delete and set statistics
                • Import and export statistics
                • Lock statistics
                • Query historical versions of statistics and roll back to a specified version
                • Configure statistics collection strategies
            • Row estimation
              • Overview
              • Row estimation based on selectivity
              • Row estimation based on the storage layer
            • Use statistical information and row estimation
          • Plan management
            • Plan cache overview
            • Disadvantages of the plan cache and countermeasures
            • Views related to the plan cache
          • Index selection
            • Index selection overview
            • Reduce row reads
            • Avoid table access by index primary key
            • Avoid sorting
          • Join
            • Joins
            • Join algorithm
              • Nested loop joins
              • Hash Join
              • Merge join
              • Common business issues
            • Join types
            • Join order
          • Order and limit optimization
            • Overview of order by and limit optimization
            • SORT assignment and optimization
            • Optimization in ORDER BY + LIMIT scenarios
        • Business logic optimization
          • SQL specifications
          • Schema specifications
        • Locate and analyze slow queries I
        • Locate and analyze slow queries II
        • Typical SQL tuning scenarios and cases
    • Troubleshooting
      • Error handling fundamentals
      • Bootstrap
      • Storage
        • Dump and major compaction
        • Memory-related issues
        • Migration, replication, and rebuild
      • Election
        • Election
        • Leader switchover exceptions
        • No leader
      • Transaction
        • Transaction issues
        • Transaction rollbacks
        • Long transaction
        • Hung transaction
        • Idle transaction
      • Log synchronization-related errors
      • Physical standby database
        • Log synchronization stuck for the physical standby database
        • Switchover and failover issues
        • Other issues
      • Backup and restore
        • Data backup failures
        • Physical restore failures
      • Arbitration server process startup failures
      • FAQ about manual operations on log streams
      • Materialized view exception diagnosis
      • Troubleshoot SQL execution errors
      • Application exceptions -- error messages without OceanBase error codes
      • Application exceptions -- error messages with OceanBase error codes
      • Troubleshoot application disconnection issues
      • External table common issue troubleshooting guide
      • Troubleshooting with ASH
        • General approach to troubleshooting using ASH
        • Troubleshoot CPU resource imbalance
        • Troubleshoot I/O bottlenecks
      • Frequently used SQL for troubleshooting
        • Query tenant_id and table_id
        • Information about the table
        • Query the primary table of an index
        • Query table fragmentation
        • View indexes with abnormal status
        • Query deadlocks
        • Query the partition name
        • Query the number of temporary tables
        • Query row locks
    • Emergency response
      • Emergency response overview
      • Analysis, diagnosis, and decision-making procedure
      • Common emergency problem handling
        • Hardware issues
          • Node failure
          • Network jitter
          • ODP failure
          • Other hardware and network issues
        • Capacity issues
          • SQL query exceptions
          • Node disk I/O high
          • Node network card overload
          • Tenant memory full
          • obproxy thread exhaustion
          • Node clog disk full
          • Node data disk full
          • Tenant request queue backlog
        • Other cluster issues
          • sys tenant or RootService exceptions
          • Insufficiency or leakage of system memory
  • OceanBase AP
    • Release note for AP core features
    • Overview of OceanBase AP
    • Core features
    • Quick start with OceanBase Database AP
    • Deployment
      • Overview of OceanBase Database AP deployment
      • Parameter configuration recommendations for AP scenarios
    • Data table design
      • Overview of tables
      • Data distribution
        • Dynamic partitioning
      • Data design best practices
        • Data table design and query optimization in AP scenarios
        • JSON Multi-Valued and Full-Text Indexing
        • Table partitioning design in OLAP scenarios
    • Data migration
      • Data migration overview
      • Migrate data from a heterogeneous data source to OceanBase Database
      • Homogeneous data migration
      • Migrate data from the big data ecosystem
      • Migrate data from a mainstream AP database to OceanBase Database
    • Data collection
      • Overview
      • Data subscription
      • Import data
        • Overview
        • Direct load
          • Overview of direct load
          • Full direct load
          • Incremental direct load
          • Import data in direct load mode by using obloader
          • Efficient data loading with full direct load and partition exchange
        • Import data to an external table
        • Data import strategies and best practices
    • Data processing
      • Data processing in OceanBase
      • Data processing tools
      • 800.ap-materialized-views
        • Query acceleration using materialized views
        • Practice scenarios of materialized views
    • Data lake
      • Data catalog
        • Overview of data catalogs
        • Internal catalog
        • ODPS catalog
        • HMS Catalog
      • External table
        • External table overview
        • External tables
        • MaxCompute external tables
      • URL external tables of OceanBase Database
    • Query acceleration
      • Overview
      • Statistics
      • Select a query parallelism level
    • Export data
    • Data visualization
    • Performance diagnosis and tuning
      • Use the DBMS_XPLAN package for performance diagnostics
      • Use the GV$SQL_PLAN_MONITOR view for performance analysis
      • Views related to AP performance analysis
    • Ecosystem integration
    • Tutorials
      • AP tutorial
      • Accelerate offline queries in OceanBase by using the HMS catalog
      • Query and read/write MaxCompute (ODPS) data in OceanBase Database
    • AP FAQ
  • OceanBase AI
    • Overview
      • Overview of vector search
      • Core features of vector search
      • AI application workflow using OceanBase vector search
    • Quick start
      • Quick start: vector search with SQL
      • Quick start: vector search with Python
    • Vector embedding technology
    • Store vector data
    • Vector index
      • Overview
      • Vector index memory management
      • Dense vector index
        • Overview
        • Index type selection
        • HNSW series index
        • IVF series index
      • Monitor and maintain indexes
      • Optimize the performance of vector search
    • SQL functions
    • Vector similarity search
    • Hybrid search
      • Full-text and vector hybrid search
    • AI function service
      • AI function service quick start
      • AI function service permissions
      • AI model registration
      • AI function syntax and examples
    • Migrate to OceanBase Database from a vector database
    • Tutorials
      • Vector search tutorial overview
      • Build an intelligent Q&A chatbot with OceanBase
      • Build an image search application with OceanBase Database
      • Build a cultural tourism assistant with OceanBase multi-model integration
    • AI integrations
      • Overview of AI integration
      • OpenAI
      • Qwen
      • LangChain
      • LlamaIndex
      • Dify
      • n8n
      • Trae
      • Spring AI
      • Cline
      • Cursor
      • Continue
    • VectorDBBench benchmark testing
    • References
      • Overview of vector data types
      • Compatibility
      • Supported clients and languages
        • Supported clients and languages for vector search
        • pyobvector Python SDK interface
        • Java SDK interface
    • Vector search FAQ
  • Integrations
    • Integration overview
    • ORM frameworks
      • Java
        • Spring Boot
        • SpringBatch
        • Connect to OceanBase Database by using Spring JDBC
        • SpringDataJPA
        • Hibernate
        • MyBatis
      • Python
        • SQLAlchemy
        • peewee
        • Tortoise ORM
      • Go
        • GORM
        • beego ORM
      • Rust
        • SeaORM
        • Diesel
      • Ruby
        • Active Record
        • Sequel
        • Ruby on Rails
      • Node.js
        • Sequelize
        • TypeORM
        • Prisma
        • Drizzle
      • C#
        • Dapper
        • SqlSugar
        • FreeSQL
      • PHP
        • Yii 2.0 ORM
        • Laravel Eloquent ORM
    • Database version management
      • Liquibase
      • Flyway
    • Data integration
      • Apache Flink
        • Apache Flink
        • Flink DirectLoad
        • Flink Connector OceanBase
      • dbt
      • SeaTunnel
      • Dataphin
      • Maxwell
      • Debezium
      • Spark Catalog
      • NiFi
      • Qlik Replicate
      • RisingWave MySQL-CDC
    • SQL development
      • WebLogic
      • DBeaver
      • Navicat
      • DataGrip
      • TablePlus
      • DMS
    • Orchestration and scheduling
      • DolphinScheduler
      • Linkis
    • Visualization tools
      • Superset
      • Power BI
      • Quick BI
      • Tableau
      • GuanData
      • vividime
      • Excel
    • Database management
      • NineData
      • Bytebase
      • DataHub
      • Zabbix
    • AI
      • OpenAI
      • Qwen
      • LangChain
      • LlamaIndex
      • Dify
      • n8n
      • Trae
      • SpringAI
      • Cline
      • Cursor
      • Continue
      • MCP Toolbox
      • CamelAI
      • Firecrawl
      • Hugging Face
      • Ollama
      • Google Gemini
      • Cloudflare Workers AI
      • Jina AI
      • Augment Code
      • Claude Code
      • Kiro
  • Tutorials
    • Build an image search application with OceanBase Database
    • Build an intelligent Q&A assistant with OceanBase Database
    • Build a cultural tourism assistant with OceanBase multi-model integration
    • Build an offline data warehouse and visual dashboard with OceanBase
    • Analyze data in OceanBase Database using Superset
    • Build a WordPress website with OceanBase Database
    • Efficiently retrieve large volumes of news data using full-text indexing
    • Use Spark to process and analyze large volumes of data in OceanBase Database quickly
    • Use direct load to accelerate the import of massive data
    • OceanBase MCP Server
  • Reference
    • OceanBase concepts
      • OceanBase Database architecture
      • Development of OceanBase Database
      • Multi-tenant architecture
        • Multi-tenant architecture overview
        • Compatibility modes
        • Tenant introduction
        • Tenants and resource management
          • Tenant resource management
          • Multi-tenant resource isolation
          • Resource unit balancing
      • Database objects
        • Oracle-compatible mode
          • Introduction
            • Database objects overview
            • Database object types
            • Database object storage
            • Dependencies between database objects
          • Tables
            • Table overview
            • Data type
              • Data type overview
              • Character data types
              • Numeric data types
              • Datetime data types
              • ROWID data types
              • LOB data types
              • Format model
                • Format model overview
                • Number format models
                • Datetime format models
              • Multi-model data types
            • Integrity constraints
            • Table storage
            • Table compression
            • Partitioned table
            • Replicated table
            • Tables with and without a primary key
            • Temporary table
            • Table group overview
          • Indexes
            • Overview of indexes
            • Local and global indexes
            • Unique and non-unique indexes
            • Use indexes
            • Index storage
          • Partitions
            • Partition overview
            • Partitioning keys
            • Partitioning types
            • Partitioned indexes
            • External table partitions
          • Views
            • Views in a database
            • Standard views
              • Standard views
              • View overview
              • OceanBase-specific views
              • Oracle-compatible views
              • View operations and data access
            • Materialized views
          • Other objects
            • Sequences
            • Synonyms
          • System views
            • Dictionary views
            • Performance views
          • Data integrity
            • Data integrity overview
            • Integrity constraint type
              • Integrity constraint types overview
              • NOT NULL constraints
              • UNIQUE KEY constraints
              • PRIMARY KEY constraints
              • FOREIGN KEY constraints
              • CHECK constraints
            • Use of integrity constraints
        • MySQL-compatible mode
          • Introduction
            • Database objects overview
            • Database object types
            • Database object storage
            • Dependencies between database objects
          • Tables
            • Table overview
            • Data type
              • Overview
              • Numeric data types
              • Datetime data types
              • Character data types
              • LOB data types
              • Multi-model data types
              • Spatial data types
              • JSON data types
            • Integrity constraints
            • Table storage
            • Table compression
            • Partitioned table
            • Replicated table
            • Tables with and without a primary key
            • Table groups
          • Indexes
            • Overview of indexes
            • Local and global indexes
            • Unique and non-unique indexes
            • Spatial indexes
            • Full-text index
            • Use indexes
            • Index storage
          • Partitions
            • Partition overview
            • Partitioning keys
            • Partitioning types
            • Partitioned indexes
            • External table partitions
          • Views
            • Views in a database
            • Standard views
              • Overview
              • Overview
              • OceanBase-specific views
              • MySQL-compatible views
              • Oracle-compatible views in MySQL-compatible tenants
              • Oracle-compatible views in the sys tenant
              • View operations and data access
            • Materialized views
          • System views
            • Dictionary views
            • Performance views
          • Data integrity
            • Overview
            • Integrity constraint type
              • Overview
              • NOT NULL constraints
              • UNIQUE KEY constraints
              • PRIMARY KEY constraints
              • Foreign key constraints
            • Use of integrity constraints
      • Distributed database objects
        • Distributed database objects overview
        • Cluster architecture
        • Data partitions and replicas
          • Log stream and replica overview
          • Log streams
          • Partition replica type
            • Log stream replica overview
            • Full-featured replica
            • Read-only replicas
            • Columnstore replica
          • Multi-replica consensus protocols
          • Data balancing
            • Intra-tenant balancing
            • Views and parameters related to data balancing
        • Dynamic scaling
          • Tenant resource scaling
            • Overview of resource scaling within a tenant
            • Horizontal scaling of tenant resources
            • Vertical scaling of tenant resources
            • Cross-zone management of tenant resources
      • Data link
        • Data link overview
        • Database proxy
          • Proxy overview
          • SQL routing
          • Connection management
          • ODP configuration management
          • Logs and monitoring
        • Database connector
          • Database driver overview
          • OBCI
          • OceanBase Connector/J
          • OceanBase Connector/C
        • Cross-data source access through DBLink
          • DBLink in MySQL-compatible mode
          • DBLink in Oracle-compatible mode
      • User interface and query language
        • SQL
          • Introduction
            • SQL overview
            • SQL data access
            • SQL standards
          • SQL statements
            • SQL statement overview
            • DDL
            • Monitor DDL execution progress
            • DML
            • DCL
          • SQL request execution process
          • SQL execution plan
          • Distributed execution plan
            • Distributed execution and parallel query
            • Generate distributed plans
            • Enable and disable parallel query
            • Manage distributed execution plans
            • Perform parameter tuning for PX
        • PL
          • PL concepts
            • Oracle-compatible mode
              • Subprograms
              • Stored procedures
              • Functions
              • Triggers
              • Packages
            • MySQL-compatible mode
              • Subprograms
              • Stored procedures
              • Functions
              • Triggers
          • PL execution mechanism
        • Client programming languages
      • Transaction management
        • Transaction
          • Overview
          • Transaction structure
          • Statement-level atomicity
          • Global Timestamp Service (GTS)
          • Transaction control
            • Transaction control overview
            • Active transactions
            • Savepoint
            • Transaction control statements
              • MySQL transaction control
              • Oracle transaction control
          • Redo logs
          • Local transactions
          • Distributed transaction
            • Distributed transaction overview
            • Two-phase commit
          • XA transactions
        • Transaction concurrency and consistency
          • Data concurrency and consistency overview
          • Multi-version read consistency
          • Concurrency control
            • Concurrency control overview
            • Lock mechanism
            • Lock Wait Mgr
          • Transaction isolation level
            • Transaction isolation level overview
            • Transaction isolation levels in Oracle-compatible mode
            • Transaction isolation levels in MySQL-compatible mode
          • Weak-consistency read
      • Storage architecture
        • Storage architecture overview
        • Data storage
          • Data storage overview
          • MemTable
          • SSTable
          • Columnar storage
          • Compression and encoding
        • Compaction
          • Overview of dumping and merging
          • Dump (Mini and minor compactions)
          • Merge (Major compaction)
        • Multi-level caching in shared-nothing architecture
        • Multi-level caching in shared storage
        • Query processing
        • Data integrity
          • Detect silent data corruption
      • Data reliability and high availability
        • High availability architecture
          • High availability architecture overview
          • ODP high availability
          • Leader election in distributed systems
          • Multi-replica log synchronization
          • Paxos protocol
          • Automatic handling of node failures
        • Disaster recovery deployment plan
        • Data protection
          • Data protection overview
          • Flashback queries
          • Recycle bin
        • Backup and restore
          • Backup and restore overview
          • Backup directory structure
          • Backup architecture
          • Restore process
        • Arbitration-based high availability solution
        • Physical Standby Database solution
      • Database security
        • Security mechanism overview
        • Identity authentication
        • Access control
        • Data transmission encryption
        • Data storage encryption
        • Monitoring and alerting
        • Security audit
      • OBServer node architecture
        • Structure of the OBServer node installation directory
        • Configuration file
        • observer thread model
          • Thread introduction
          • Worker threads
          • Background threads
        • Logs
        • Memory management
          • Memory management overview
          • Memory-related parameters
          • Memory-related views
          • Memory-related logs
          • Memory problem diagnosis
        • Plugin mechanism
    • System management
      • Configuration management
        • Configuration management introduction
        • Set parameters
        • Set variables
      • Storage management
        • Minor compaction management
          • Dump management overview
          • Automatically trigger a minor compaction
          • Manually initiate a minor compaction
          • View minor compaction information
          • Modify minor compaction parameters
        • Major compaction management
          • Overview
          • Automatically trigger a major compaction
          • Configure scheduled major compactions
          • Adaptive major compactions
          • Manually initiate a major compaction
          • Manually control a major compaction
          • View major compaction information
          • Modify major compaction settings
        • Data compression
          • Overview
          • Data encoding and compression
      • Memory management
        • Memory management overview
        • Memory structure
        • Maximum database memory
        • Manage internal system memory
        • Memory management in a tenant
        • Manage the memory of the plan cache
        • Memleak-based regular memory leak diagnostics mechanism
        • Query memory usage information
        • Common memory problems
      • Process management
        • Overview of OceanBase threads
        • Multi-tenant threads of OceanBase Database
        • View the thread status
        • Background threads of OceanBase Database
        • FAQ about multi-tenant threads
      • Disk management
        • Configure dynamic expansion of disk data files
        • View the disk space used by a tenant or table
    • Database object management
      • Overview
      • MySQL-compatible mode
        • Create and manage databases
          • Create a database
          • View databases
          • Modify a database
          • Drop a database
        • Create and manage tables
          • About tables
          • Create a table
          • Column skip index attribute
          • Define an auto-increment column
          • Define column constraints
          • Query tables
          • Change a table
          • Change the attribute of a table
          • Empty a table
          • Drop a table
          • Lock a table
          • Create and manage external tables
            • About external tables
            • Create an external table
            • Create external table partitions
            • Manage external files
            • Data type mapping
        • Create and manage partitions
          • Partition overview
          • Create a partitioned table
          • Partition splitting
            • Partition splitting overview
            • Manual partition splitting
            • Automatic partition splitting
            • Recommended configurations for automatic partitioning
          • Dynamic partitioning
            • Overview of dynamic partitioning
            • Create a dynamic partitioned table
            • Query a dynamic partitioned table
            • Modify a dynamic partitioned table
            • Dynamic partition management tasks
          • Modify partitioning rules
          • Add a partition
          • Drop a partition
          • Truncate a partition
          • Partition pruning
          • Query data in specified partitions
          • Create indexes on partitioned tables
            • Index overview
            • Local indexes
            • Global indexes
          • Partition exchange
        • Create and manage table groups
          • About table groups
          • Create a table group
          • Query information about a table group
          • Add tables to a table group
          • Modify the SHARDING attribute of a table group
          • Manage tables in a table group
          • Drop a table group
        • Create and manage indexes
          • About indexes
          • Create an index
          • Query indexes
          • Monitor indexes
          • Drop an index
          • System functions supported for function-based indexes
          • System functions not supported for function-based indexes
        • Manage views
          • Manage standard views
          • Manage materialized views
            • Overview of materialized views
            • Materialized view logs
            • Automatic management of materialized view logs
            • Create a materialized view
            • Refresh a materialized view
            • Rewrite queries based on materialized views
            • Query materialized views
            • Modify the attributes of a materialized view
            • Drop a materialized view
            • Resource isolation for materialized views
        • Create and manage sequences
          • Create a sequence
          • Query sequences
          • Reference a sequence
          • Modify a sequence
          • Drop a sequence
        • Create and manage triggers
          • Trigger overview
          • Create a DML trigger
          • Query trigger information
          • Drop a trigger
        • Create and manage DBLinks
          • Create a DBLink
          • Query existing DBLinks
          • Manage DBLinks
          • Use a DBLink to access data in a remote database
          • Drop a DBLink
        • Create and manage catalogs
          • Catalog overview
          • Create a catalog
          • View a catalog
          • Drop a catalog
        • Custom hotspot cache policy
          • Overview of custom hot data caching strategies
          • Create a table-level hot cache policy
          • Create a partition-level hot cache strategy
          • Modify the table-level hot cache policy
          • Modify the partition-level hot cache policy
          • Guide to managing custom hot cache strategies
      • Oracle-compatible mode
        • Create and manage tables
          • About tables
          • Create a table
          • Column skip index attribute
          • Define column constraints
          • Query the definition of a table
          • Modify a table
          • Change the replicated table attribute
          • Empty a table
          • Drop a table
          • Lock a table
          • Create and manage external tables
            • About external tables
            • Create an external table
            • Create external table partitions
            • Manage external files
            • Data type mapping
        • Create and manage partitions
          • Partition overview
          • Create a partitioned table
          • Partition splitting
            • Partition splitting overview
            • Manual partition splitting
            • Automatic partition splitting
            • Recommended configurations for automatic partitioning
          • Dynamic partitioning
            • Overview of dynamic partitioning
            • Create a dynamic partitioned table
            • Query a dynamic partitioned table
            • Modify a dynamic partitioned table
            • Dynamic partition management tasks
          • Modify partitioning rules
          • Rename a partition
          • Add a partition
          • Drop a partition
          • Truncate a partition
          • Partition pruning
          • Query data in specified partitions
          • Create indexes on partitioned tables
            • Index overview
            • Local indexes
            • Global indexes
          • Partition exchange
        • Create and manage table groups
          • About table groups
          • Create a table group
          • Query information about a table group
          • Add tables to a table group
          • Modify the SHARDING attribute of a table group
          • Manage tables in a table group
          • Drop a table group
        • Create and manage indexes
          • About indexes
          • Create an index
          • Query indexes
          • Monitor indexes
          • Drop an index
          • System functions supported for function-based indexes
          • System functions not supported for function-based indexes
        • Manage views
          • Manage standard views
          • Manage materialized views
            • Overview of materialized views
            • Materialized view logs
            • Automatic management of materialized view logs
            • Create materialized views
            • Refresh a materialized view
            • Rewrite queries based on materialized views
            • Query materialized views
            • Modify the attributes of a materialized view
            • Drop a materialized view
            • Materialized view resource isolation
        • Manage sequences
        • Manage synonyms
        • Create and manage triggers
          • Trigger overview
          • Create a DML trigger
          • Create an INSTEAD OF trigger
          • Create a composite trigger
          • Modify and drop a trigger
          • Disable or enable a trigger
          • Query trigger information
        • Manage directories
        • Create and manage DBLinks
          • Create a DBLink
          • Query existing DBLinks
          • Manage DBLinks
          • Use a DBLink to access data in a remote database
          • Use a DBLink to modify the data in a remote database
          • Drop a DBLink
          • Install and configure OCI
    • Database design specifications and practices
      • Object naming conventions
        • Overview of object naming conventions
        • Tenant naming conventions
        • User naming conventions
        • Table naming conventions
        • Field naming conventions
        • Other naming conventions
      • Object structure design specifications
        • Field design
        • Table structure design
        • Partitioned table design
        • Index design
        • Other structural designs
      • Character set specifications
      • Database connection specifications
      • Comments
      • ORM conventions
      • Exception handling
    • SQL reference
      • Introduction to SQL
      • SQL syntax
        • System tenants
          • Overview
          • ALTER SYSTEM
            • ACTIVATE STANDBY
            • ADD REPLICA
            • ADD RESTORE SOURCE
            • ARCHIVELOG
            • ARBITRATION
            • BOOTSTRAP
            • BACKUP KEY
            • BACKUP
            • BACKUP CLUSTER PARAMETERS
            • BALANCE TASK
            • BALANCE JOB
            • CANCEL BACKUP
            • CANCEL CLONE
            • CANCEL DELETE BACKUP
            • CANCEL MIGRATE UNIT
            • CANCEL REPLICA TASK
            • CANCEL RESTORE
            • CANCEL RECOVER TABLE
            • CANCEL TRANSFER PARTITION
            • CLEAR RESTORE SOURCE
            • CREATE LS
            • DELETE BACKUP POLICY
            • DELETE BACKUP ALL
            • DELETE BACKUPSET/ARCHIVELOG_PIECE
            • DELETE OBSOLETE BACKUP
            • LOAD MODULE DATA
            • MAJOR and MINOR
            • MIGRATE REPLICA
            • MIGRATE UNIT
            • MODIFY LS
            • MODIFY PAXOS_REPLICA_NUM
            • MODIFY REPLICA
            • NOARCHIVELOG
            • FLUSH PLAN CACHE
            • FLUSH SEQUENCE CACHE
            • FLUSH SS_LOCAL_CACHE
            • FLUSH ss_micro_cache
            • JOB
            • SET LOG_RESTORE_SOURCE
            • PARAMETER
            • RECOVER STANDBY
            • RECOVER STANDBY CANCEL
            • REMOVE REPLICA
            • REFRESH
            • RESTORE
            • RESTORE PREVIEW
            • RECOVER TABLE
            • SET DATA_BACKUP_DEST
            • SERVER
            • SERVICE_NAME
            • SWITCHOVER
            • SET LOG_ARCHIVE_DEST
            • SET LOG_ARCHIVE_DEST_STATE
            • THROTTLE
            • TRANSFER PARTITION
            • WASH MEMORY FRAGMENTATION
            • ZONE
          • ALTER RESOURCE POOL
          • ALTER RESOURCE TENANT
          • ALTER RESOURCE UNIT
          • ALTER TENANT
          • CREATE RESOURCE POOL
          • CREATE RESOURCE UNIT
          • CREATE TENANT
          • CREATE STANDBY TENANT
          • DROP RESOURCE POOL
          • DROP RESOURCE UNIT
          • DROP TENANT
          • SET DECRYPTION
          • SET ENCRYPTION
          • SHOW RESTORE PREVIEW
        • User tenants (MySQL-compatible mode)
          • Basic elements
            • Data types
              • Overview
              • Numeric types
                • Overview
                • Integer data types
                • Fixed-point data types
                • Floating-point data types
                • Bit value data type
              • Datetime types
                • Overview
                • DATE, DATETIME, and TIMESTAMP types
                • TIME type
                • YEAR type
              • String types
                • Overview
                • CHAR and VARCHAR
                • BINARY and VARBINARY
              • Large objects and text types
                • Overview
                • BLOB types
                • TEXT types
                • STRING types
                • LOB types
              • ENUM type
              • SET type
              • JSON data types
                • Overview
                • Create a JSON value
                • Query and modify JSON values
                • Convert a JSON data type
                • Update partial JSON data
                • Semi-structured encoding
              • Spatial data types
                • Overview
                • SRS
                • Create a spatial column
                • Create a spatial index
                • Spatial data formats
              • Roaring bitmap types
                • Overview
                • Create an efficient compressed bitmap column
              • Array data types
                • Overview of array element types
                • Create an array column
              • Map data types
                • Overview of the map data type
                • ## Create map columns
            • Expressions
              • Overview
              • Expression syntax
              • Data type conversion rules
            • Character set and collation
              • Overview
              • Character set
              • Collations
              • Database-level character set and collation
              • Table-level character set and collation
              • Column-level character sets and collations
              • Character expression character sets and collations
              • Character sets and collations for client connection
            • Literals
              • Overview
              • Strings
              • Numbers
              • Datetime values
              • Bit values
              • Boolean values
              • NULLs
            • Schema object names
            • User-defined variables
            • Comments
          • Operators
            • Overview of operators
            • Operator precedence
            • Arithmetic operators
            • Bitwise operators
            • Comparison operators
            • Logical operators
            • Assignment operators
            • Date and time operators
            • Concatenation operators
            • BINARY operator
            • CASE conditional operator
          • Functions
            • Overview
            • Single-row functions
              • Datetime functions
                • ADDDATE
                • CONVERT_TZ
                • CURDATE
                • CURRENT_DATE
                • CURRENT_TIME
                • CURRENT_TIMESTAMP
                • CURTIME
                • DATE
                • DATE_ADD
                • DATE_FORMAT
                • DATE_SUB
                • DATEDIFF
                • DAYOFMONTH
                • DAYOFWEEK
                • DAYOFYEAR
                • EXTRACT
                • FROM_DAYS
                • FROM_UNIXTIME
                • GET_FORMAT
                • HOUR
                • LAST_DAY
                • LOCALTIME
                • LOCALTIMESTAMP
                • MAKEDATE
                • MAKETIME
                • MICROSECOND
                • MINUTE
                • MONTH
                • MONTHNAME
                • NOW
                • PERIOD_ADD
                • PERIOD_DIFF
                • QUARTER
                • SEC_TO_TIME
                • SECOND
                • STR_TO_DATE
                • SUBDATE
                • SUBTIME
                • SYSDATE
                • TIME
                • TIME_FORMAT
                • TIME_TO_SEC
                • TIME_TO_USEC
                • TIMEDIFF
                • TIMESTAMP
                • TIMESTAMPADD
                • TIMESTAMPDIFF
                • TO_DAYS
                • TO_SECONDS
                • UNIX_TIMESTAMP
                • USEC_TO_TIME
                • UTC_DATE
                • UTC_TIME
                • UTC_TIMESTAMP
                • WEEK
                • WEEKDAY
                • WEEKOFYEAR
                • YEARWEEK
                • YEAR
                • ADDTIME
                • DAYNAME
                • DAY
              • String functions
                • ASCII
                • BIN
                • BIT_LENGTH
                • CHAR
                • CHAR_LENGTH
                • CHARACTER_LENGTH
                • CONCAT
                • CONCAT_WS
                • ELT
                • EXPORT_SET
                • FIELD
                • FIND_IN_SET
                • FORMAT
                • HEX
                • INSERT
                • INSTR
                • INT2IP
                • IP2INT
                • KEYVALUE
                • LCASE
                • LEFT
                • LENGTH
                • LOCATE
                • LOWER
                • LPAD
                • LTRIM
                • MAKE_SET
                • MD5_CONCAT_WS
                • MID
                • OCT
                • OCTET_LENGTH
                • ORD
                • POSITION
                • QUOTE
                • REGEXP
                • REGEXP_INSTR
                • REGEXP_LIKE
                • REGEXP_REPLACE
                • REGEXP_SUBSTR
                • REPEAT
                • REPLACE
                • REVERSE
                • RIGHT
                • RLIKE
                • RPAD
                • RTRIM
                • SPACE
                • SPLIT_PART
                • STRCMP
                • SUBSTR
                • SUBSTRING
                • SUBSTRING_INDEX
                • TRIM
                • UCASE
                • UNHEX
                • UPPER
                • URL_DECODE
                • URL_ENCODE
                • WEIGHT_STRING
                • TO_BASE64
                • FROM_BASE64
                • SOUNDEX
              • Conversion functions
                • CAST
                • CONVERT
                • DECODE_TRACE_ID
                • SCN_TO_TIMESTAMP
                • TIMESTAMP_TO_SCN
                • TO_CHAR(character)
                • TO_CHAR(number)
                • TO_CHAR(datetime)
              • Mathematical functions
                • ABS
                • ACOS
                • ASIN
                • ATAN
                • ATAN2
                • BIT_COUNT
                • CEIL
                • CEILING
                • CONV
                • COS
                • COT
                • CRC32
                • DEGREES
                • EXP
                • FLOOR
                • GENERATOR
                • LN
                • LOG
                • LOG10
                • LOG2
                • MOD
                • NEG
                • NORMAL
                • PI
                • POW
                • POWER
                • RADIANS
                • RAND
                • RANDOM
                • RANDSTR
                • ROUND
                • SIGN
                • SIN
                • SQRT
                • TAN
                • TRUNCATE
                • UNIFORM
                • ZIPF
              • Comparison functions
                • GREATEST
                • INTERVAL
                • ISNULL
                • LEAST
              • Process control functions
                • CASE
                • IF
                • IFNULL
                • NULLIF
                • ORA_DECODE
            • Aggregate functions
              • APPROX_COUNT_DISTINCT
              • AVG
              • ARG_MAX
              • ARG_MIN
              • BIT_AND
              • BIT_OR
              • BIT_XOR
              • COUNT
              • GROUP_CONCAT
              • GROUPING
              • MAX
              • MIN
              • STD
              • STDDEV
              • STDDEV_POP
              • STDDEV_SAMP
              • SUM
              • VAR_POP
              • VAR_SAMP
              • VARIANCE
              • WINDOW_FUNNEL
            • Analysis functions
              • APPROX_COUNT_DISTINCT
              • AVG
              • BIT_AND
              • BIT_OR
              • BIT_XOR
              • COUNT
              • CUME_DIST
              • DENSE_RANK
              • FIRST_VALUE
              • LAG
              • LAST_VALUE
              • LEAD
              • MAX
              • MIN
              • NTH_VALUE
              • NTILE
              • PERCENT_RANK
              • PERCENTILE_CONT
              • RANK
              • ROW_NUMBER
              • STD
              • STDDEV
              • STDDEV_POP
              • STDDEV_SAMP
              • SUM
              • VAR_POP
              • VAR_SAMP
              • VARIANCE
            • Encryption functions
              • AES_DECRYPT
              • AES_ENCRYPT
              • COMPRESS
              • DECODE
              • DES_DECRYPT
              • DES_ENCRYPT
              • ENCODE
              • ENCRYPT
              • ENHANCED_AES_ENCRYPT
              • ENHANCED_AES_DECRYPT
              • MD5
              • PASSWORD
              • UNCOMPRESS
              • UNCOMPRESSED_LENGTH
              • RANDOM_BYTES
              • SHA
              • SHA1
              • SHA2
              • VALIDATE_PASSWORD_STRENGTH
              • SM3
              • SM4_ENCRYPT
              • SM4_DECRYPT
            • Information functions
              • BENCHMARK
              • CHARSET
              • COERCIBILITY
              • COLLATION
              • CONNECTION_ID
              • CURRENT_ROLE
              • CURRENT_USER
              • DATABASE
              • FOUND_ROWS
              • LAST_INSERT_ID
              • LAST_INSERT_ID Behavior Description
              • ICU_VERSION
              • OB_TRANSACTION_ID
              • ROW_COUNT
              • SCHEMA
              • SESSION_USER
              • SYSTEM_USER
              • USER
              • VERSION
              • OB_VERSION
            • JSON functions
              • Overview
              • Functions for creating JSON text
                • JSON_ARRAY
                • JSON_OBJECT
                • JSON_QUOTE
              • Functions for searching JSON text
                • JSON_CONTAINS
                • JSON_CONTAINS_PATH
                • JSON_EXTRACT
                • JSON_KEYS
                • JSON_OVERLAPS
                • JSON_SEARCH
                • JSON_VALUE
                • MEMBER OF
              • Functions for modifying JSON text
                • JSON_ARRAY_APPEND
                • JSON_APPEND
                • JSON_ARRAY_INSERT
                • JSON_INSERT
                • JSON_MERGE
                • JSON_MERGE_PATCH
                • JSON_MERGE_PRESERVE
                • JSON_REMOVE
                • JSON_REPLACE
                • JSON_SET
                • JSON_UNQUOTE
              • Functions for returning JSON text properties
                • JSON_DEPTH
                • JSON_LENGTH
                • JSON_TYPE
                • JSON_VALID
              • `JSON_TABLE`
              • JSON utility functions
                • JSON_PRETTY
                • JSON_STORAGE_SIZE
              • JSON aggregate functions
                • JSON_ARRAYAGG
                • JSON_OBJECTAGG
              • JSON schema validation functions
                • JSON_SCHEMA_VALID
                • JSON_SCHEMA_VALIDATION_REPORT
            • XML functions
              • Overview
              • Functions for querying XML data
                • EXTRACTVALUE
              • Functions for modifying XML data
                • UPDATEXML
            • Spatial functions
              • Overview
              • Functions that create geometry values
              • Spatial operation functions
              • Spatial relation functions
              • Geometry property functions
              • Geometry format conversion functions
              • Spatial analysis functions
              • Spatial constructor functions
              • Spatial accessor functions
              • Spatial format conversion functions
              • Geometry processing functions
              • _ST_GeoHash
            • Performance schema functions
              • FORMAT_BYTES
              • FORMAT_PICO_TIME
            • Lock functions
              • Overview
              • GET_LOCK
              • IS_FREE_LOCK
              • IS_USED_LOCK
              • RELEASE_ALL_LOCKS
              • RELEASE_LOCK
            • Bitmap functions
              • Overview
              • RoaringBitmap constructor
              • Bitmap cardinality functions
              • Roaring bitmap operation functions
              • Roaring bitmap judgment functions
              • Roaring bitmap output functions
              • Roaring bitmap aggregate functions
            • Array functions
              • Overview
              • Array constructor functions
              • Array judgment functions
              • Array output functions
              • Array operation functions
            • Text processing functions
              • TOKENIZE
            • Auditing functions
              • Overview
              • AUDIT_LOG_FILTER_REMOVE_FILTER
              • AUDIT_LOG_FILTER_REMOVE_USER
              • AUDIT_LOG_FILTER_SET_FILTER
              • AUDIT_LOG_FILTER_SET_USER
            • Map functions
              • Overview of map functions
              • Mapping constructor
              • Mapping comparison functions and operators
              • Mapping Operation Functions
            • Other functions
              • ANY_VALUE
              • BIN_TO_UUID
              • COALESCE
              • DEFAULT
              • NAME_CONST
              • INET_ATON
              • INET_NTOA
              • INET6_ATON
              • INET6_NTOA
              • IS_IPV4
              • IS_IPV4_COMPAT
              • IS_IPV6
              • IS_UUID
              • MATCH AGAINST
              • NVL
              • UUID_TO_BIN
              • SLEEP
              • UUID
              • UUID_SHORT
              • VALUES
          • Queries and subqueries
            • Overview
            • Subqueries
            • Joins
            • Full-text search
          • SQL statements
            • General syntax
            • Common table expressions
            • ALTER COMPILE
            • ALTER DATABASE
            • ALTER LOCATION
            • ALTER MATERIALIZED VIEW
            • ALTER MATERIALIZED VIEW LOG
            • ALTER EXTERNAL TABLE
            • ALTER OUTLINE
            • ALTER SENSITIVE RULE
            • ALTER SEQUENCE
            • ALTER/CHANGE/MODIFY EXTERNAL_STORAGE_DEST
            • ALTER SYSTEM FLUSH SEQUENCE CACHE
            • MAJOR and MINOR
            • STORAGE_CACHE_POLICY_EXECUTOR
            • ALTER TABLE
            • ALTER TABLEGROUP
            • ALTER TABLESPACE
            • ALTER USER
            • ALTER VIEW
            • ALTER INSTANCE ROTATE INNODB MASTER KEY
            • ANALYZE
            • CACHE INDEX
            • CREATE CONCURRENT_LIMITING_RULE
            • CREATE DATABASE LINK
            • CREATE DATABASE
            • CREATE EXTERNAL CATALOG
            • CREATE EXTERNAL TABLE
            • CREATE INDEX
            • CREATE LOCATION
            • CREATE MATERIALIZED VIEW
            • CREATE MATERIALIZED VIEW LOG
            • CREATE OUTLINE
            • CREATE FORMAT OUTLINE
            • CREATE RESTORE POINT
            • CREATE ROLE
            • CREATE SEQUENCE
            • CREATE SENSITIVE RULE
            • CREATE TABLE
            • CREATE TABLEGROUP
            • CREATE TABLESPACE
            • CREATE USER
            • CREATE VIEW
            • CHECKSUM TABLE
            • CREATE EVENT
            • DEALLOCATE PREPARE
            • DROP DATABASE LINK
            • DELETE
            • DESCRIBE
            • DROP CATALOG
            • DROP CONCURRENT_LIMITING_RULE
            • DROP DATABASE
            • DROP INDEX
            • DROP LOCATION
            • DROP MATERIALIZED VIEW
            • DROP MATERIALIZED VIEW LOG
            • DROP OUTLINE
            • DROP ROLE
            • DROP SENSITIVE RULE
            • DROP TABLE
            • DROP TABLEGROUP
            • DROP TABLESPACE
            • DROP SEQUENCE
            • DROP USER
            • DROP VIEW
            • DROP RESTORE POINT
            • EXECUTE
            • EXPLAIN
            • FLASHBACK
            • FLUSH TABLE
            • GRANT
            • HELP
            • INSERT
            • KILL
            • LOAD DATA
            • LOAD INDEX INTO CACHE
            • LOCK TABLES
            • OPTIMIZE
            • PREPARE
            • PURGE
            • PURGE RECYCLEBIN
            • RENAME USER
            • RENAME TABLE
            • REPLACE
            • REPAIR TABLE
            • REMOVE
            • REVOKE
            • SAVEPOINT
            • SCHEMA
            • SELECT INTO
            • SELECT
              • SELECT
              • JOIN clause
              • WINDOW clause
              • UNION clause
            • SET DEFAULT ROLE
            • SET
            • SET CATALOG
            • SET CHARSET
            • SET NAMES
            • SET PASSWORD
            • SET ROLE
            • SET TRANSACTION
            • SHOW
            • SUBMIT JOB
            • SHOW JOB STATUS
            • CANCEL JOB
            • TRANSACTION
            • TRUNCATE TABLE
            • UNLOCK TABLES
            • UPDATE
            • USE
            • VALUES
            • XA transaction
          • DDL feature
            • Overview
            • Online and offline DDL operations
            • Index operations
            • Primary key operations
            • Column operations
            • Generated column operations
            • Foreign key operations
            • Table operations
            • Partition operations
            • Column type change rules
            • Conversion rules for numeric data types
          • Pseudocolumns
            • Overview
            • PARTITIONID pseudo-column
            • Pseudo columns of sequences
        • User tenants (Oracle-compatible mode)
          • Pseudo columns
            • Overview
            • Hierarchical query pseudocolumns
            • Sequence pseudocolumns
            • ORA_ROWSCN pseudocolumn
            • ROWNUM pseudocolumn
            • ROWID pseudocolumn
            • PARTITIONID pseudo-column
          • Basic elements
            • Built-in data types
              • Overview
              • Character data types
                • Overview
                • CHAR data type
                • NCHAR data type
                • NVARCHAR2 data type
                • VARCHAR2 data type
                • VARCHAR data type
              • Numeric data types
                • Overview
                • NUMBER data type
                • FLOAT data type
                • Floating-point numbers
                • Precedence of numeric data types
              • Datetime and interval data types
                • Overview
                • DATE data type
                • TIMESTAMP data type
                • TIMESTAMP WITH TIME ZONE data type
                • TIMESTAMP WITH LOCAL TIME ZONE data type
                • INTERVAL YEAR TO MONTH data type
                • INTERVAL DAY TO SECOND data type
                • Calculation of dates, timestamps, and intervals
              • RAW data type
              • Large object data types
                • Overview
                • BLOB data type
                • CLOB data type
                • LOB types
              • Rowid data types
              • User-defined data types
              • Any types
              • JSON data types
                • Overview
                • Create a column of the JSON data type
                • Query JSON data
                • Conversion rules for JSON data types
              • XML data types
                • Overview
                • XML data definition
                • Create a column of the XMLType data type
                • Query XMLType data
                • Conversion of the XMLType data type
              • Spatial data types
                • Overview
                • Create a spatial column
                • SDO_GEOMETRY attribute access
                • Create a spatial index
            • Data type comparison rules
              • Overview
              • Numeric value comparison rules
              • Date value comparison rules
              • Character value comparison rules
              • Data type precedence
              • Data type conversion rules
              • Security considerations for data conversion
            • Literals
              • Overview
              • Text literals
              • Numeric literals
              • Datetime literals
                • Date literals
                • Timestamp literals
              • Interval literals
            • Format model
              • Overview
              • Number format models
              • Datetime format models
              • RR datetime format element
              • String-to-date conversion rules
            • NULL value
              • Overview
              • NULLs in SQL functions
              • NULLs in comparison conditions
              • NULLs in conditional expressions
            • Annotations
              • Overview
              • Remarks about SQL statements
              • Comments on schema and non-schema objects
              • Hints
                • Overview
                • Use query block name and QB_NAME hint to control query optimization
                • Hint list
                  • Global hints
                    • Optimizer Stats Hint
                    • Transform Hint under the Global Hints category
                    • Other hints in the GLOBAL hint category
                  • Optimized hints
                    • Access path hints
                    • Join order hints in the Optimized Hint category
                    • Join operation hints in the Optimized Hint category
                    • Subquery hints in the Optimized Hint category
                    • Group By Hint in the Optimized Hint category
                    • DISTINCT hint
                    • Set Hint under Optimized Hint
                    • Distributed DML hints in the Optimized Hint category
                  • Transform hints
                    • Stmt Transform Hint
                    • Cost-based transform hints
                    • Heuristics transform hints
                    • Other hints under the TRANSFORM hint type
                  • Outline-related hints
            • Database objects
              • Schema objects
              • Non-schema objects
            • Database naming conventions
              • Overview
              • Suggestions on schema object names
            • Database object reference methods
              • Overview
              • Reference schema objects
              • Reference objects in a remote database
                • Create a DBLink
                • Reference a DBLink
              • Refer to partitioned tables and indexes
              • Reference an attribute or method of an object type
            • Character sets and collations
          • Operators
            • Overview of operators
            • Operator precedence
            • Arithmetic operators
            • Concatenation operator
            • Hierarchical query operators
            • Set operators
            • COLLATE operator
          • Functions
            • Overview
            • Single-row functions
              • Numeric functions
                • ABS
                • ACOS
                • ASIN
                • ATAN
                • ATAN2
                • BITAND
                • CEIL
                • COS
                • COSH
                • EXP
                • FLOOR
                • GENERATOR
                • LN
                • LOG
                • MOD
                • NANVL
                • NORMAL
                • POWER
                • REMAINDER
                • ROUND
                • RANDOM
                • RANDSTR
                • SIGN
                • SIN
                • SINH
                • SQRT
                • TAN
                • TANH
                • TRUNC
                • UNIFORM
                • WIDTH_BUCKET
                • ZIPF
              • String functions that return a string
                • CHR
                • CONCAT
                • INITCAP
                • LOWER
                • LPAD
                • LTRIM
                • NLS_LOWER
                • NLSSORT
                • NLS_UPPER
                • REGEXP_REPLACE
                • REGEXP_SUBSTR
                • REPLACE
                • RPAD
                • RTRIM
                • SUBSTR
                • TRANSLATE
                • TRANSLATE ... USING
                • TRIM
                • UPPER
              • String functions that return numbers
                • ASCII
                • INSTR
                • LENGTH
                • REGEXP_COUNT
                • REGEXP_INSTR
              • Datetime functions
                • ADD_MONTHS
                • CURRENT_DATE
                • CURRENT_TIMESTAMP
                • DBTIMEZONE
                • EXTRACT(datetime)
                • FROM_TZ
                • LAST_DAY
                • LOCALTIMESTAMP
                • MONTHS_BETWEEN
                • NEXT_DAY
                • NUMTODSINTERVAL
                • NUMTOYMINTERVAL
                • ROUND (date)
                • SESSIONTIMEZONE
                • SYS_EXTRACT_UTC
                • SYSDATE
                • SYSTIMESTAMP
                • TO_CHAR(datetime)
                • TO_DSINTERVAL
                • TO_TIMESTAMP
                • TO_TIMESTAMP_TZ
                • TO_YMINTERVAL
                • TRUNC (date)
                • TZ_OFFSET
              • Generic comparison functions
                • GREATEST
                • LEAST
              • Conversion functions
                • ASCIISTR
                • CAST
                • CHARTOROWID
                • CONVERT
                • HEXTORAW
                • NUMTODSINTERVAL
                • NUMTOYMINTERVAL
                • RAWTOHEX
                • ROWIDTOCHAR
                • ROWIDTONCHAR
                • SCN_TO_TIMESTAMP
                • TIMESTAMP_TO_SCN
                • TO_BINARY_DOUBLE
                • TO_BINARY_FLOAT
                • TO_BLOB
                • TO_CHAR(character)
                • TO_CHAR(datetime)
                • TO_CHAR(number)
                • TO_CLOB
                • TO_DATE
                • TO_DSINTERVAL
                • TO_MULTI_BYTE
                • TO_NUMBER
                • TO_NCHAR(character)
                • TO_NCHAR(datetime)
                • TO_NCHAR(number)
                • TO_SINGLE_BYTE
                • TO_TIMESTAMP
                • TO_TIMESTAMP_TZ
                • TO_YMINTERVAL
                • UNISTR
                • NLS_CHARSET_ID
              • Encoding and decoding functions
                • DECODE
                • DUMP
                • ORA_HASH
                • VSIZE
              • Null value related functions
                • COALESCE
                • LNNVL
                • NANVL
                • NULLIF
                • NVL
                • NVL2
              • Environment and identifier functions
                • SYS_CONTEXT
                • SYS_GUID
                • UID
                • USER
                • USERENV
                • OB_VERSION
              • Hierarchical functions
                • SYS_CONNECT_BY_PATH
              • JSON functions
                • Overview
                • Create JSON text functions
                  • JSON_ARRAY
                  • JSON_OBJECT
                  • JSON_ARRAYAGG
                  • JSON_OBJECTAGG
                • Query JSON text functions
                  • JSON_VALUE
                  • JSON_QUERY
                  • JSON_EXISTS
                  • JSON_TABLE
                • Validate JSON text functions
                  • JSON_EQUAL
                • Modify JSON text functions
                  • JSON_MERGEPATCH
              • XML functions
                • Overview
                • Construct XMLType data functions
                  • XMLAGG
                  • XMLATTRIBUTES
                  • XMLELEMENT
                  • XMLPARSE
                  • XMLCONCAT
                  • XMLFOREST
                • Query XMLType data functions
                  • EXTRACT
                  • EXTRACTVALUE
                  • XMLSERIALIZE
                  • XMLCAST
                  • XMLTABLE
                  • XMLSEQUENCE
                  • EXISTSNODE
                • Modify XMLType data functions
                  • UPDATEXML
                  • INSERTCHILDXML
                  • DELETEXML
              • Spatial functions
                • Overview
                • Constructor functions
                • Spatial query functions
                • Format conversion functions
            • Aggregate functions
              • APPROX_COUNT_DISTINCT
              • AVG
              • CORR
              • COUNT
              • COVAR_POP
              • COVAR_SAMP
              • CUME_DIST
              • DENSE_RANK
              • GROUPING
              • KEEP
              • LISTAGG
              • MAX
              • MEDIAN
              • MIN
              • PERCENT_RANK
              • PERCENTILE_CONT
              • PERCENTILE_DISC
              • RANK
              • REGR_(Linear Regression)
              • ROLLUP
              • STDDEV
              • STDDEV_POP
              • STDDEV_SAMP
              • SUM
              • VAR_POP
              • VAR_SAMP
              • VARIANCE
              • WINDOW_FUNNEL
              • WMSYS.WM_CONCAT/WM_CONCAT
              • GROUP_ID
              • GROUPING_ID
            • Analysis functions
              • Overview
              • AVG
              • ARG_MIN
              • ARG_MAX
              • CORR
              • COUNT
              • COVAR_POP
              • COVAR_SAMP
              • CUME_DIST
              • DENSE_RANK
              • FIRST_VALUE
              • KEEP
              • LAG
              • LAST_VALUE
              • LEAD
              • LISTAGG
              • MAX
              • MEDIAN
              • MIN
              • NTILE
              • NTH_VALUE
              • PERCENT_RANK
              • PERCENTILE_CONT
              • PERCENTILE_DISC
              • RANK
              • RATIO_TO_REPORT
              • REGR_(Linear Regression)
              • ROW_NUMBER
              • STDDEV
              • STDDEV_POP
              • STDDEV_SAMP
              • SUM
              • VAR_POP
              • VAR_SAMP
              • VARIANCE
              • WMSYS.WM_CONCAT/WM_CONCAT
            • Information functions
              • OB_TRANSACTION_ID
          • Expressions
            • Overview
            • Simple expressions
            • Compound expressions
            • Case expressions
            • Column expressions
            • CURSOR expressions
            • Datetime expressions
            • Function expressions
            • Interval expressions
            • Scalar subquery expressions
            • Type constructor expressions
            • Expression list
          • Conditions
            • Overview
            • Condition precedence
            • Comparison conditions
            • Floating-point conditions
            • Logical conditions
            • Pattern-matching conditions
            • NULL conditions
            • Compound conditions
            • BETWEEN condition
            • EXISTS condition
            • IN condition
          • Queries and subqueries
            • Overview
            • Simple queries
            • Hierarchical queries
            • Composite queries
            • JOIN queries
            • Subqueries
            • Lateral derived tables
            • DUAL table query
          • SQL statements
            • DDL
              • ALTER EXTERNAL TABLE
              • ALTER INDEX
              • ALTER KEYSTORE
              • ALTER LOCATION
              • ALTER MATERIALIZED VIEW
              • ALTER MATERIALIZED VIEW LOG
              • ALTER OUTLINE
              • ALTER PROFILE
              • ALTER ROLE
              • ALTER SENSITIVE RULE
              • ALTER SEQUENCE
              • ALTER SESSION
              • ALTER SYSTEM FLUSH CACHE
              • ALTER/CHANGE/MODIFY EXTERNAL_STORAGE_DEST
              • ALTER SYSTEM FLUSH SEQUENCE CACHE
              • ALTER SYSTEM SET PARAMETER
              • ALTER TABLE
              • ALTER TABLEGROUP
              • ALTER TABLESPACE
              • ALTER USER
              • ALTER VIEW COMPILE
              • COMMENT
              • CREATE CONTEXT
              • CREATE CONCURRENT_LIMITING_RULE
              • CREATE DIRECTORY
              • CREATE DATABASE LINK
              • CREATE EXTERNAL TABLE
              • CREATE INDEX
              • CREATE KEYSTORE
              • CREATE LOCATION
              • CREATE MATERIALIZED VIEW
              • CREATE MATERIALIZED VIEW LOG
              • CREATE OUTLINE
              • CREATE PROFILE
              • CREATE FORMAT OUTLINE
              • CREATE ROLE
              • CREATE SEQUENCE
              • CREATE SENSITIVE RULE
              • CREATE SYNONYM
              • CREATE TABLE
              • CREATE TABLEGROUP
              • CREATE TABLESPACE
              • CREATE USER
              • CREATE VIEW
              • DROP CONTEXT
              • DROP CONCURRENT_LIMITING_RULE
              • DROP DATABASE LINK
              • DROP DIRECTORY
              • DROP INDEX
              • DROP LOCATION
              • DROP MATERIALIZED VIEW
              • DROP MATERIALIZED VIEW LOG
              • DROP OUTLINE
              • DROP PROFILE
              • DROP ROLE
              • DROP SENSITIVE RULE
              • DROP SEQUENCE
              • DROP SYNONYM
              • DROP TABLE
              • DROP TABLEGROUP
              • DROP TABLESPACE
              • DROP USER
              • DROP VIEW
              • RENAME
              • TRUNCATE TABLE
              • MAJOR and MINOR
            • DML
              • DELETE
              • INSERT
              • MERGE
              • PURGE
              • EXPLAIN
              • SELECT
                • SIMPLE SELECT
                • Set-based SELECT
                • WITH CLAUSE
                • JOIN clause
                • APPLY clause
              • UPDATE
            • DCL
              • ANALYZE
              • ALTER SYSTEM KILL SESSION
              • AUDIT
              • COMMIT
              • FLASHBACK TABLE BEFORE DROP
              • GRANT
              • KILL
              • LOAD DATA
              • LOCK TABLE
              • REMOVE
              • REVOKE
              • ROLLBACK
              • SAVEPOINT
              • SELECT INTO
              • SET NAMES
              • SET PASSWORD
              • SET ROLE
              • SET VARIABLE
              • SHOW
              • SHRINK
              • TRANSACTION
          • DDL feature
            • Overview
            • Online and offline DDL operations
            • Index operations
            • Primary key operations
            • Column operations
            • Generated column operations
            • Foreign key operations
            • Table operations
            • Partition operations
            • Column type change rules
            • Conversion rules for numeric data types
      • SQL specifications and practices
        • Limitations on writing SQL statements
        • SQL writing specifications
          • SELECT statements
          • DML statements
          • DDL statements
          • Multi-table join specifications
          • Table scan
          • Transactions
          • Cache
          • How to use hints
          • Others
        • SQL statement examples
          • Implicit data type conversion
          • Join tables
          • Read with eventual consistency
          • Pagination
      • Reserved keywords (MySQL-compatible mode)
      • Reserved keywords (Oracle-compatible mode)
      • Data type conversion behavior in MySQL-compatible tenants in strict mode
    • PL reference
      • What is PL
        • Overview
        • Main features of PL
        • PL architecture
      • PL reference (MySQL-compatible mode)
        • Syntax of PL stored programs
        • PL stored procedures
          • Overview
          • Variables in stored programs
          • Stored procedures
          • Stored objects and privilege management
          • Stored functions
          • External storage function
          • Triggers
          • EVENT
          • Limitations on stored programs
          • SQL Transpiler
          • PL asynchronous commit optimization
        • PL cursors
          • Overview
          • Cursor execution process
          • Limitations on server cursors
        • PL conditional control statements
          • CASE
          • IF
          • ITERATE
          • LEAVE
          • LOOP
          • REPEAT
          • RETURN
          • WHILE
        • PL data manipulation statements
          • CALL
          • DO
        • PL data definition statements
          • ALTER FUNCTION
          • ALTER PROCEDURE
          • CREATE FUNCTION
          • CREATE PROCEDURE
          • CREATE TRIGGER
          • DROP FUNCTION
          • DROP PROCEDURE
          • DROP TRIGGER
        • PL database management statements
          • SHOW CREATE FUNCTION
          • SHOW CREATE PROCEDURE
          • SHOW CREATE TRIGGER
          • SHOW FUNCTION STATUS
          • SHOW PROCEDURE STATUS
          • SHOW TRIGGERS
        • PL related dictionary views
          • INFORMATION_SCHEMA PARAMETERS
          • INFORMATION_SCHEMA ROUTINES
          • INFORMATION_SCHEMA TRIGGERS
        • PL exception handling
          • Overview
          • DECLARE ... CONDITION
          • DECLARE ... HANDLER
          • GET DIAGNOSTICS
          • RESIGNAL
          • SIGNAL
          • Scope of procedures
          • Diagnostic areas
          • Exception handling and OUT/INOUT parameters
          • Limitations on exception handling
        • PL system packages
          • Overview
          • DBMS_AI_SERVICE
            • Overview of DBMS_AI_SERVICE
            • CREATE_AI_MODEL
            • DROP_AI_MODEL
            • CREATE_AI_MODEL_ENDPOINT
            • ALTER_AI_MODEL_ENDPOINT
            • DROP_AI_MODEL_ENDPOINT
          • DBMS_HYBRID_SEARCH
            • Overview of DBMS_HYBRID_SEARCH
            • SEARCH
            • GET_SQL
          • DBMS_MVIEW
            • Overview
            • PURGE_LOG
            • REFRESH
          • DBMS_MVIEW_STATS
            • Overview
            • PURGE_REFRESH_STATS
            • SET_MVREF_STATS_PARAMS
            • SET_SYSTEM_DEFAULT
          • DBMS_PARTITION
            • DBMS_PARTITION overview
            • MANAGE_DYNAMIC_PARTITION
          • DBMS_RESOURCE_MANAGER
            • Overview
            • CREATE_CONSUMER_GROUP
            • CREATE_PLAN
            • CREATE_PLAN_DIRECTIVE
            • DELETE_CONSUMER_GROUP
            • DELETE_PLAN
            • DELETE_PLAN_DIRECTIVE
            • System Packages
            • UPDATE_PLAN_DIRECTIVE
          • DBMS_STATS
            • Overview
            • ALTER_STATS_HISTORY_RETENTION
            • CREATE_STAT_TABLE
            • DELETE_COLUMN_STATS
            • DELETE_INDEX_STATS
            • DELETE_TABLE_STATS
            • DELETE_SCHEMA_STATS
            • DELETE_SCHEMA_PREFS
            • DELETE_SYSTEM_STATS
            • DELETE_TABLE_PREFS
            • DROP_STAT_TABLE
            • EXPORT_COLUMN_STATS
            • EXPORT_INDEX_STATS
            • EXPORT_TABLE_STATS
            • EXPORT_SCHEMA_STATS
            • FLUSH_DATABASE_MONITORING_INFO
            • GATHER_INDEX_STATS
            • GATHER_TABLE_STATS
            • GATHER_SCHEMA_STATS
            • GATHER_SYSTEM_STATS
            • GET_STATS_HISTORY_AVAILABILITY
            • GET_STATS_HISTORY_RETENTION
            • GET_PARAM
            • GET_PREFS
            • IMPORT_INDEX_STATS
            • IMPORT_COLUMN_STATS
            • IMPORT_TABLE_STATS
            • IMPORT_SCHEMA_STATS
            • LOCK_PARTITION_STATS
            • LOCK_SCHEMA_STATS
            • LOCK_TABLE_STATS
            • RESTORE_TABLE_STATS
            • RESTORE_SCHEMA_STATS
            • RESET_GLOBAL_PREF_DEFAULTS
            • RESET_PARAM_DEFAULTS
            • PURGE_STATS
            • SET_COLUMN_STATS
            • SET_INDEX_STATS
            • SET_TABLE_STATS
            • SET_GLOBAL_PREFS
            • SET_PARAM
            • SET_SCHEMA_PREFS
            • SET_SYSTEM_STATS
            • SET_TABLE_PREFS
            • UNLOCK_PARTITION_STATS
            • UNLOCK_SCHEMA_STATS
            • UNLOCK_TABLE_STATS
            • CANCEL_GATHER_STATS
          • DBMS_TRUSTED_CERTIFICATE_MANAGER
            • Overview
            • ADD_TRUSTED_CERTIFICATE
            • DELETE_TRUSTED_CERTIFICATE
            • UPDATE_TRUSTED_CERTIFICATE
          • DBMS_UDR
            • Overview
            • CREATE_RULE
            • DISABLE_RULE
            • ENABLE_RULE
            • REMOVE_RULE
          • DBMS_VECTOR
            • Overview of DBMS_VECTOR
            • Overview of DBMS_VECTOR
            • REFRESH_INDEX
            • REBUILD_INDEX
            • INDEX_VECTOR_MEMORY_ESTIMATE
            • INDEX_VECTOR_MEMORY_ADVISOR
          • DBMS_WORKLOAD_REPOSITORY
            • Overview
            • ASH_REPORT
            • CREATE_SNAPSHOT
            • DROP_SNAPSHOT_RANGE
            • MODIFY_SNAPSHOT_SETTINGS
          • DBMS_XPLAN
            • Overview
            • DISPLAY_ACTIVE_SESSION_PLAN
            • DISPLAY_CURSOR
            • DISPLAY
            • DISABLE_OPT_TRACE
            • DISPLAY_SQL_PLAN_BASELINE
            • ENABLE_OPT_TRACE
            • SET_OPT_TRACE_PARAMETER
          • DBMS_XPROFILE
            • Overview of DBMS_XPROFILE
            • DISPLAY_PROFILE
          • DBMS_BALANCE
            • Overview
            • SET_BALANCE_WEIGHT
            • CLEAR_BALANCE_WEIGHT
            • TRIGGER_PARTITION_BALANCE
            • SET_TABLEGROUP_BALANCE_WEIGHT
            • CLEAR_TABLEGROUP_BALANCE_WEIGHT
          • DBMS_LIMIT_CALCULATOR
            • Overview
            • CALCULATE_MIN_PHY_RES_NEEDED_BY_UNIT
            • CALCULATE_MIN_PHY_RES_NEEDED_BY_LOGIC_RES
            • CALCULATE_MIN_PHY_RES_NEEDED_BY_STANDBY_TENANT
          • DBMS_EXTERNAL_TABLE
            • Overview
            • AUTO_REFRESH_EXTERNAL_TABLE
          • DBMS_JAVA
            • Overview of DBMS_JAVA
            • LOADJAVA
            • DROPJAVA
          • DBMS_PYTHON
            • Overview of DBMS_PYTHON
            • DROPPYTHON
            • LOADPYTHON
          • DBMS_DATA_DICT
            • DBMS_DATA_DICT
        • Reserved and non-reserved PL keywords
      • PL reference (Oracle-compatible mode)
        • PL language basics
          • Character sets
          • Lexical elements
          • Declaration
          • Reference identifiers
          • Scope and visibility of identifiers
          • Assignment
          • Expressions
          • PL blocks
          • Subprograms
          • Error reporting functions
        • PL data types
          • Overview
          • SQL data types
          • LOB data types
          • BOOLEAN type
          • User-defined subtypes
          • PLS_INTEGER and BINARY_INTEGER
          • Arrays
          • PL JSON data types
        • PL process control
          • Overview
          • Conditional control
          • Loop control
          • Sequential control
        • PL collections and records
          • Overview
          • Collections
          • Associative arrays
          • Varrays
          • Nested tables
          • Collection constructors
          • Collection methods
            • Overview
            • DELETE method
            • TRIM method
            • EXTEND method
            • EXISTS method
            • FIRST and LAST methods
            • COUNT method
            • LIMIT method
            • PRIOR and NEXT methods
          • RECORD
          • Insert records into a table and update a table by using records
          • Create and call a subprogram with record type parameters
        • PL static SQL
          • Overview
          • Cursors
            • Overview
            • Cursor attributes
            • Implicit cursors
            • Explicit cursor
            • Cursor variables
            • Use the FOR loop to traverse a cursor
            • Modify and drop a cursor
          • Transaction processing and control
          • Autonomous transactions
            • Overview of autonomous transactions
            • Control autonomous transactions
            • Autonomous triggers
            • Call autonomous functions from SQL statements
          • FORALL bulk execution
        • PL dynamic SQL
          • Overview
          • Execute dynamic SQL
          • DBMS_SQL system package
        • PL stored procedures and functions
          • Overview
          • Create a stored procedure
          • Create a function
          • Manage stored procedures and functions
          • Privilege control
          • Pipeline functions
            • Overview
            • Create a pipelined function
            • Applications
          • SQL Transpiler
          • User-defined functions
            • Overview
            • Interfaces of user-defined aggregate functions
            • Create a user-defined aggregate function
            • Use user-defined aggregate functions
          • Collection of stored procedure information and its impact on parallel execution of SQL statements
          • PL Database Link
          • PL asynchronous commit optimization
        • PL triggers
          • Overview
          • Create a DML trigger
          • Modify and drop triggers
          • Disable or enable a trigger
          • Query trigger information
          • INSTEAD OF DML triggers
          • Composite DML triggers
          • System triggers
        • PL packages
          • Overview
          • Create a package
          • Overloaded programs in a package
          • Manage packages
          • PL environment definitions in the STANDARD package
        • PL exception handling
          • Overview
          • Compile-time warnings
          • Exception types
          • Exception handling
        • DDL operations on stored PL units
          • Overview
          • ALTER FUNCTION
          • ALTER PACKAGE
          • ALTER PROCEDURE
          • ALTER TRIGGER
          • ALTER TYPE
          • CREATE FUNCTION
          • CREATE PACKAGE
          • CREATE PACKAGE BODY
          • CREATE PROCEDURE
          • CREATE TRIGGER
          • CREATE TYPE
          • CREATE TYPE BODY
          • DROP FUNCTION
          • DROP PACKAGE
          • DROP PROCEDURE
          • DROP TRIGGER
          • DROP TYPE
          • DROP TYPE BODY
        • PL label security package
          • Overview
          • SA_SYSDBA policy management package
            • Overview
            • SA_SYSDBA.ALTER_POLICY
            • SA_SYSDBA.CREATE_POLICY
            • SA_SYSDBA.DROP_POLICY
          • SA_COMPONENTS label component package
            • Overview
            • SA_COMPONENTS.ALTER_LEVEL
            • SA_COMPONENTS.CREATE_LEVEL
            • SA_COMPONENTS.DROP_LEVEL
          • SA_LABEL_ADMIN label management package
            • Overview
            • SA_LABEL_ADMIN.ALTER_LABEL
            • SA_LABEL_ADMIN.CREATE_LABEL
            • SA_LABEL_ADMIN.DROP_LABEL
          • SA_POLICY_ADMIN policy management package
            • Overview
            • SA_POLICY_ADMIN.APPLY_TABLE_POLICY
            • SA_POLICY_ADMIN.DISABLE_TABLE_POLICY
            • SA_POLICY_ADMIN.ENABLE_TABLE_POLICY
            • SA_POLICY_ADMIN.REMOVE_TABLE_POLICY
          • SA_USER_ADMIN user label management package
            • Overview
            • SA_USER_ADMIN.SET_LEVELS
          • SA_SESSION session management package
            • Overview
            • SA_SESSION.LABEL
            • SA_SESSION.RESTORE_DEFAULT_LABELS
            • SA_SESSION.ROW_LABEL
            • SA_SESSION.SET_LABEL
            • SA_SESSION.SET_ROW_LABEL
        • PL system package (Oracle-compatible mode)
          • Overview
          • DBMS_APPLICATION_INFO
            • Overview
            • READ_CLIENT_INFO
            • READ_MODULE
            • SET_ACTION
            • SET_CLIENT_INFO
            • SET_MODULE
          • DBMS_AUDIT_MGMT
            • Overview
            • CLEAN_AUDIT_TRAIL
            • CREATE_PURGE_JOB
            • DROP_PURGE_JOB
            • SET_LAST_ARCHIVE_TIMESTAMP
            • SET_PURGE_JOB_STATUS
          • DBMS_BALANCE
            • Overview
            • SET_BALANCE_WEIGHT
            • CLEAR_BALANCE_WEIGHT
            • TRIGGER_PARTITION_BALANCE
          • DBMS_CRYPTO
            • Overview
            • ENCRYPT
            • DECRYPT
            • HASH
          • DBMS_DEBUG
            • Overview
            • ATTACH_SESSION
            • CONTINUE
            • DEBUG_ON
            • DEBUG_OFF
            • DETACH_SESSION
            • DELETE_BREAKPOINT
            • DISABLE_BREAKPOINT
            • ENABLE_BREAKPOINT
            • GET_VALUE
            • GET_VALUES
            • GET_RUNTIME_INFO
            • GET_TIMEOUT_BEHAVIOUR
            • INITIALIZE
            • PROBE_VERSION
            • PRINT_BACKTRACE
            • SET_TIMEOUT
            • SET_TIMEOUT_BEHAVIOUR
            • SET_BREAKPOINT
            • SHOW_BREAKPOINTS
          • DBMS_DESCRIBE
            • Overview
            • DESCRIBE_PROCEDURE
          • DBMS_JOB
            • Overview
            • BROKEN
            • CHANGE
            • ZONE
            • INTERVAL
            • NEXT_DATE
            • REMOVE
            • RUN
            • SUBMIT
            • USER_EXPORT
            • WHAT
          • DBMS_LOB
            • Overview of DBMS_LOB
            • APPEND
            • CLOSE
            • COPY
            • CREATETEMPORARY
            • ERASE
            • FREETEMPORARY
            • GETLENGTH
            • ISOPEN
            • INSTR
            • ISTEMPORARY
            • OPEN
            • READ
            • SUBSTR
            • TRIM
            • WRITE
            • WRITEAPPEND
          • DBMS_LOCK
            • DBMS_LOCK overview
            • ALLOCATE_UNIQUE
            • ALLOCATE_UNIQUE_AUTONOMOUS
            • REQUEST
            • SLEEP
            • RELEASE
          • DBMS_METADATA
            • Overview of DBMS_METADATA
            • GET_DDL
            • GET_TABLE_INDEX_DDL
          • DBMS_MVIEW
            • Overview
            • PURGE_LOG
            • REFRESH
          • DBMS_MONITOR
            • Overview
            • OB_SESSION_TRACE_ENABLE
            • OB_SESSION_TRACE_DISABLE
            • OB_CLIENT_ID_TRACE_ENABLE
            • OB_CLIENT_ID_TRACE_DISABLE
            • OB_MOD_ACT_TRACE_ENABLE
            • OB_MOD_ACT_TRACE_DISABLE
            • OB_TENANT_TRACE_ENABLE
            • OB_TENANT_TRACE_DISABLE
          • DBMS_MVIEW_STAT
            • Overview
            • PURGE_REFRESH_STATS
            • SET_MVREF_STATS_PARAMS
            • SET_SYSTEM_DEFAULT
          • DBMS_OUTPUT
            • Overview
            • DISABLE
            • ENABLE
            • GET_LINE
            • GET_LINES
            • NEW_LINE
            • PUT
            • PUT_LINE
          • DBMS_PLAN_CACHE
            • Overview
            • PURGE
          • DBMS_PLSQL_CODE_COVERAGE
            • Overview of DBMS_PLSQL_CODE_COVERAGE
            • START_COVERAGE
            • STOP_COVERAGE
            • CREATE_COVERAGE_TABLES
          • DBMS_PARTITION
            • Overview of DBMS_PARTITION
            • MANAGE_DYNAMIC_PARTITION
          • DBMS_RANDOM
            • Overview
            • INITIALIZE
            • NORMAL
            • RANDOM
            • SEED
            • STRING
            • TERMINATE
            • VALUE
          • DBMS_RESOURCE_MANAGER
            • Overview
            • CREATE_CONSUMER_GROUP
            • CREATE_PLAN
            • CREATE_PLAN_DIRECTIVE
            • DELETE_CONSUMER_GROUP
            • DELETE_PLAN
            • DELETE_PLAN_DIRECTIVE
            • SET_CONSUMER_GROUP_MAPPING
            • UPDATE_PLAN_DIRECTIVE
          • DBMS_SCHEDULER
            • Overview
            • CREATE_JOB
            • CREATE_JOB_CLASS
            • CREATE_PROGRAM
            • DEFINE_PROGRAM_ARGUMENT
            • DISABLE
            • DROP_JOB
            • DROP_JOB_CLASS
            • DROP_PROGRAM
            • ENABLE
            • GENERATE_JOB_NAME
            • PURGE_LOG
            • RUN_JOB
            • SET_ATTRIBUTE
            • SET_JOB_ARGUMENT_VALUE
            • STOP_JOB
            • DISABLE
            • ENABLE
          • DBMS_SESSION
            • Overview of DBMS_SESSION
            • CLEAR_ALL_CONTEXT
            • CLEAR_CONTEXT
            • CLEAR_IDENTIFIER
            • RESET_PACKAGE
            • SET_CONTEXT
            • SET_IDENTIFIER
            • SESSION_IS_ROLE_ENABLED
            • IS_ROLE_ENABLED
          • DBMS_SQL
            • Overview
            • BIND_VARIABLE
            • CLOSE_CURSOR
            • COLUMN_VALUE
            • DEFINE_COLUMN
            • DEFINE_ARRAY
            • DESCRIBE_COLUMNS
            • EXECUTE
            • EXECUTE_AND_FETCH
            • FETCH_ROWS
            • IS_OPEN
            • LAST_ERROR_POSITION
            • OPEN_CURSOR
            • PARSE
            • VARIABLE_VALUE
          • DBMS_STATS
            • Overview
            • ALTER_STATS_HISTORY_RETENTION
            • CREATE_STAT_TABLE
            • DELETE_COLUMN_STATS
            • DELETE_INDEX_STATS
            • DELETE_TABLE_STATS
            • DELETE_SCHEMA_STATS
            • DELETE_SCHEMA_PREFS
            • DELETE_SYSTEM_STATS
            • DELETE_TABLE_PREFS
            • DROP_STAT_TABLE
            • EXPORT_COLUMN_STATS
            • EXPORT_INDEX_STATS
            • EXPORT_TABLE_STATS
            • EXPORT_SCHEMA_STATS
            • FLUSH_DATABASE_MONITORING_INFO
            • GATHER_INDEX_STATS
            • GATHER_TABLE_STATS
            • GATHER_SCHEMA_STATS
            • GATHER_SYSTEM_STATS
            • GET_STATS_HISTORY_AVAILABILITY
            • GET_STATS_HISTORY_RETENTION
            • GET_PARAM
            • GET_PREFS
            • IMPORT_INDEX_STATS
            • IMPORT_COLUMN_STATS
            • IMPORT_TABLE_STATS
            • IMPORT_SCHEMA_STATS
            • LOCK_PARTITION_STATS
            • LOCK_SCHEMA_STATS
            • LOCK_TABLE_STATS
            • RESTORE_TABLE_STATS
            • RESTORE_SCHEMA_STATS
            • RESET_GLOBAL_PREF_DEFAULTS
            • RESET_PARAM_DEFAULTS
            • PURGE_STATS
            • SET_COLUMN_STATS
            • SET_INDEX_STATS
            • SET_TABLE_STATS
            • SET_GLOBAL_PREFS
            • SET_PARAM
            • SET_SCHEMA_PREFS
            • SET_SYSTEM_STATS
            • SET_TABLE_PREFS
            • UNLOCK_PARTITION_STATS
            • UNLOCK_SCHEMA_STATS
            • UNLOCK_TABLE_STATS
            • COPY_TABLE_STATS
            • CANCEL_GATHER_STATS
          • DBMS_UDR
            • Overview
            • CREATE_RULE
            • DISABLE_RULE
            • ENABLE_RULE
            • REMOVE_RULE
          • DBMS_UTILITY
            • Overview of DBMS_UTILITY
            • ACTIVE_INSTANCES
            • CURRENT_INSTANCE
            • DB_VERSION
            • FORMAT_CALL_STACK
            • FORMAT_ERROR_BACKTRACE
            • FORMAT_ERROR_STACK
            • GET_ENDIANNESS
            • GET_HASH_VALUE
            • GET_PARAMETER_VALUE
            • GET_SQL_HASH
            • GET_TIME
            • IS_BIT_SET
            • IS_CLUSTER_DATABASE
            • NAME_RESOLVE
            • NAME_TOKENIZE
            • OLD_CURRENT_SCHEMA
            • OLD_CURRENT_USER
            • PORT_STRING
            • TABLE_TO_COMMA
            • COMMA_TO_TABLE
          • DBMS_WORKLOAD_REPOSITORY
            • Overview
            • ASH_REPORT
          • DBMS_XA
            • Overview
            • DBMS_XA constants
            • DBMS_XA_XID object type
            • DIST_TXN_SYNC
            • XA_COMMIT
            • XA_END
            • XA_FORGET
            • XA_GETLASTOER
            • XA_PREPARE
            • XA_RECOVER
            • XA_ROLLBACK
            • XA_SETTIMEOUT
            • XA_START
          • DBMS_XMLGEN
            • Overview
            • CONVERT
          • DBMS_PROFILER
            • Overview
            • START_PROFILER
            • STOP_PROFILER
            • PAUSE_PROFILER
            • RESUME_PROFILER
            • FLUSH_DATA
            • GET_VERSION
            • INTERNAL_VERSION_CHECK
            • ROLLUP_UNIT
            • ROLLUP_RUN
            • OB_INIT_OBJECTS
            • OB_DROP_OBJECTS
          • DBMS_XPLAN
            • Overview
            • DISPLAY_ACTIVE_SESSION_PLAN
            • DISPLAY_CURSOR
            • DISPLAY
            • DISABLE_OPT_TRACE
            • DISPLAY_SQL_PLAN_BASELINE
            • ENABLE_OPT_TRACE
            • SET_OPT_TRACE_PARAMETER
          • DBMS_XPROFILE
            • Overview of DBMS_XPROFILE
            • DISPLAY_PROFILE
          • DBMS_EXTERNAL_TABLE
            • Overview
            • AUTO_REFRESH_EXTERNAL_TABLE
          • DBMS_DDL
            • Overview of DBMS_DDL
            • WRAP
            • CREATE_WRAPPED
          • ODCIConst
            • Overview
            • ODCIArgDesc.ArgType
            • ODCIEnv.CallProperty
            • ODCIEnv.Envflags
            • ODCIIndexAlter
            • ODCIIndexAlter parameter alter_option
            • ODCIIndexInfo.IndexInfoFlags
            • ODCIIndexInfo.IndexParaDegree
            • ODCIPredInfo.Flags
            • ODCIQueryInfo.Flags
            • ODCIStatsOptions.Flags
            • ODCIStatsOptions.Options
            • Return Status
            • ScnFlg
          • UTL_ENCODE
            • Overview
            • BASE64_DECODE
            • BASE64_ENCODE
          • UTL_FILE
            • Overview of UTL_FILE
            • FCLOSE
            • FCOPY
            • FCLOSE_ALL
            • FFLUSH
            • FOPEN
            • FOPEN_NCHAR
            • FGETPOS
            • FGETATTR
            • FREMOVE
            • FRENAME
            • FSEEK
            • NEW_LINE
            • NEW_LINE_NCHAR
            • GET_RAW
            • GET_LINE
            • GET_LINE_NCHAR
            • PUT
            • PUT_RAW
            • PUT_LINE
            • PUT_NCHAR
            • PUT_LINE_NCHAR
            • PUTF
            • PUTF_NCHAR
            • IS_OPEN
          • UTL_I18N
            • Overview
            • RAW_TO_CHAR
            • STRING_TO_RAW
          • UTL_RECOMP
            • Overview
            • RECOMP_PARALLEL
            • RECOMP_SERIAL
            • TRUNCATE_UTL_RECOMP_SKIP_LIST
            • POPULATE_UTL_RECOMP_SKIP_LIST
            • PARALLEL_SLAVE
          • UTL_RAW
            • Overview
            • BIT_AND
            • BIT_COMPLEMENT
            • BIT_OR
            • BIT_XOR
            • CAST_FROM_BINARY_DOUBLE
            • CAST_FROM_BINARY_FLOAT
            • CAST_FROM_BINARY_INTEGER
            • CAST_FROM_NUMBER
            • CAST_TO_BINARY_DOUBLE
            • CAST_TO_BINARY_FLOAT
            • CAST_TO_BINARY_INTEGER
            • CAST_TO_NUMBER
            • CAST_TO_RAW
            • CAST_TO_VARCHAR2
            • COMPARE
            • CONCAT
            • COPIES
            • LENGTH
            • REVERSE
            • SUBSTR
            • TRANSLATE
          • UTL_TCP
            • Overview of UTL_TCP
            • OPEN_CONNECTION
            • CLOSE_CONNECTION
            • CLOSE_ALL_CONNECTIONS
            • WRITE_LINE
            • WRITE_TEXT
            • WRITE_RAW
            • GET_LINE
            • GET_TEXT
          • UTL_SMTP
            • Overview of UTL_SMTP
            • OPEN_CONNECTION
            • CLOSE_CONNECTION
            • QUIT
            • AUTH
            • COMMAND
            • COMMAND_REPLIES
            • HELO
            • EHLO
            • MAIL
            • RCPT
            • OPEN_DATA
            • WRITE_DATA
            • WRITE_RAW_DATA
            • CLOSE_DATA
            • DATA
            • VRFY
            • HELP
            • NOOP
            • RSET
          • UTL_HTTP
            • Overview of UTL_HTTP
            • BEGIN_REQUEST
            • END_REQUEST
            • GET_RESPONSE
            • END_RESPONSE
            • READ_LINE
            • READ_RAW
            • READ_TEXT
            • WRITE_LINE
            • WRITE_RAW
            • WRITE_TEXT
            • SET_TRANSFER_TIMEOUT
            • GET_TRANSFER_TIMEOUT
          • ANYDATA TYPE
            • Overview of the ANYDATA type
            • BEGINCREATE static procedure
            • ENDCREATE member procedure
            • GET* member functions
            • GETTYPE member function
            • GETTYPENAME member function
            • PIECEWISE member procedure
            • SET* member procedures
          • XMLType
            • Overview
            • CREATEXML
            • GETCLOBVAL
            • GETSTRINGVAL
            • TRANSFORM
            • XMLTYPE
            • EXISTSNODE
            • EXTRACT
        • Reserved PL keywords
    • System views
      • Overview
      • Overview of system views
      • View changes between V3.x and V4.x
      • SYS tenant views
        • Dictionary views
          • information_schema.CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS
          • information_schema.CHARACTER_SETS
          • information_schema.CHECK_CONSTRAINTS
          • information_schema.COLLATION_CHARACTER_SET_APPLICABILITY
          • information_schema.COLLATIONS
          • information_schema.COLUMN_PRIVILEGES
          • information_schema.COLUMNS
          • information_schema.ENGINES
          • information_schema.events
          • information_schema.GLOBAL_STATUS
          • information_schema.GLOBAL_VARIABLES
          • information_schema.KEY_COLUMN_USAGE
          • information_schema.PARAMETERS
          • information_schema.PARTITIONS
          • information_schema.PROCESSLIST
          • information_schema.QUERY_RESPONSE_TIME
          • information_schema.REFERENTIAL_CONSTRAINTS
          • information_schema.role_table_grants
          • information_schema.role_column_grants
          • information_schema.role_routine_grants
          • information_schema.ROUTINES
          • information_schema.SCHEMA_PRIVILEGES
          • information_schema.SCHEMATA
          • information_schema.SESSION_STATUS
          • information_schema.SESSION_VARIABLES
          • information_schema.STATISTICS
          • information_schema.TABLE_CONSTRAINTS
          • information_schema.TABLE_PRIVILEGES
          • information_schema.TABLES
          • information_schema.USER_PRIVILEGES
          • information_schema.VIEW_TABLE_USAGE
          • information_schema.VIEWS
          • mysql.columns_priv
          • mysql.db
          • mysql.default_roles
          • mysql.help_category
          • mysql.help_keyword
          • mysql.help_relation
          • mysql.help_topic
          • mysql.proc
          • mysql.procs_priv
          • mysql.role_edges
          • mysql.time_zone
          • mysql.time_zone_name
          • mysql.time_zone_transition
          • mysql.time_zone_transition_type
          • mysql.user
          • oceanbase.ALL_OB_EXTERNAL_TABLE_FILES
          • oceanbase.CDB_CKPT_HISTORY
          • oceanbase.CBA_SCHEDULER_RUNNING_JOBS
          • oceanbase.CDB_OB_DATABASE_PRIVILEGE
          • oceanbase.CDB_IND_COLUMNS
          • oceanbase.CDB_IND_PARTITIONS
          • oceanbase.CDB_IND_SUBPARTITIONS
          • CDB_INDEX_USAGE
          • oceanbase.CDB_INDEXES
          • CDB_MVIEW_LOGS
          • oceanbase.CDB_MVIEW_RUNNING_JOBS
          • CDB_MVIEWS
          • CDB_MVREF_CHANGE_STATS
          • CDB_MVREF_RUN_STATS
          • CDB_MVREF_STATS
          • CDB_MVREF_STATS_PARAMS
          • CDB_MVREF_STATS_SYS_DEFAULTS
          • CDB_MVREF_STMT_STATS
          • oceanbase.CDB_OB_ACCESS_POINT
          • oceanbase.CDB_OB_AI_MODEL_ENDPOINTS
          • oceanbase.CDB_OB_AI_MODELS
          • oceanbase.CDB_OB_LS_ARB_REPLICA_TASKS
          • oceanbase.CDB_OB_ARCHIVE_DEST
          • oceanbase.CDB_OB_ARCHIVELOG
          • oceanbase.CDB_OB_ARCHIVELOG_PIECE_FILES
          • oceanbase.CDB_OB_ARCHIVELOG_SUMMARY
          • oceanbase.CDB_OB_AUTO_INCREMENT
          • CDB_OB_AUX_STATISTICS
          • oceanbase.CDB_OB_BACKUP_DELETE_JOB_HISTORY
          • oceanbase.CDB_OB_BACKUP_DELETE_JOBS
          • oceanbase.CDB_OB_BACKUP_DELETE_POLICY
          • oceanbase.CDB_OB_BACKUP_DELETE_TASK_HISTORY
          • oceanbase.CDB_OB_BACKUP_DELETE_TASKS
          • oceanbase.CDB_OB_BACKUP_JOB_HISTORY
          • oceanbase.CDB_OB_BACKUP_JOBS
          • oceanbase.CDB_OB_BACKUP_PARAMETER
          • oceanbase.CDB_OB_BACKUP_SET_FILES
          • oceanbase.CDB_OB_BACKUP_STORAGE_INFO
          • oceanbase.CDB_OB_BACKUP_STORAGE_INFO_HISTORY
          • oceanbase.CDB_OB_BACKUP_TASK_HISTORY
          • oceanbase.CDB_OB_BACKUP_TASKS
          • oceanbase.CDB_OB_BALANCE_JOB_HISTORY
          • oceanbase.CDB_OB_BALANCE_JOBS
          • oceanbase.CDB_OB_BALANCE_TASK_HISTORY
          • oceanbase.CDB_OB_BALANCE_TASKS
          • oceanbase.CDB_OB_COLUMN_CHECKSUM_ERROR_INFO
          • oceanbase.CDB_OB_CCL_RULES
          • oceanbase.CDB_OB_CS_REPLICA_STATS
          • oceanbase.CDB_OB_DATA_DICTIONARY_IN_LOG
          • oceanbase.CDB_OB_DATABASES
          • oceanbase.CDB_OB_DEADLOCK_EVENT_HISTORY
          • oceanbase.CDB_OB_DYNAMIC_PARTITION_TABLES
          • oceanbase.CDB_OB_EXTERNAL_TABLE_FILES
          • oceanbase.CDB_OB_FREEZE_INFO
          • oceanbase.CDB_OB_IMPORT_TABLE_JOB_HISTORY
          • oceanbase.CDB_OB_IMPORT_TABLE_JOBS
          • oceanbase.CDB_OB_IMPORT_TABLE_TASK_HISTORY
          • oceanbase.CDB_OB_IMPORT_TABLE_TASKS
          • oceanbase.CDB_OB_KV_TTL_TASK_HISTORY
          • oceanbase.CDB_OB_KV_TTL_TASKS
          • oceanbase.CDB_OB_LOG_RESTORE_SOURCE
          • oceanbase.CDB_OB_LS
          • oceanbase.CDB_OB_LS_ARB_REPLICA_TASK_HISTORY
          • oceanbase.CDB_OB_LS_HISTORY
          • oceanbase.CDB_OB_LS_LOCATIONS
          • oceanbase.CDB_OB_LS_LOG_ARCHIVE_PROGRESS
          • oceanbase.CDB_OB_LS_REPLICA_TASKS
          • oceanbase.CDB_OB_LS_REPLICA_TASK_HISTORY
          • oceanbase.CDB_OB_MAJOR_COMPACTION
          • oceanbase.CDB_OB_OBJECT_BALANCE_WEIGHT
          • oceanbase.CDB_OB_RECOVER_TABLE_JOB_HISTORY
          • oceanbase.CDB_OB_RECOVER_TABLE_JOBS
          • oceanbase.CDB_OB_SERVICES
          • oceanbase.CDB_OB_RESTORE_HISTORY
          • oceanbase.CDB_OB_RESTORE_PROGRESS
          • oceanbase.CDB_OB_RSRC_DIRECTIVES
          • oceanbase.CDB_OB_SENSITIVE_COLUMNS
          • oceanbase.CDB_OB_SENSITIVE_RULE_PLAINACCESS_USERS
          • oceanbase.CDB_OB_SENSITIVE_RULES
          • oceanbase.CDB_OB_SERVER_SPACE_USAGE
          • oceanbase.CDB_OB_SPACE_USAGE
          • oceanbase.CDB_OB_SS_SPACE_USAGE
          • oceanbase.CDB_OB_SYS_VARIABLES
          • oceanbase.CDB_OB_STORAGE_IO_USAGE
          • oceanbase.CDB_OB_SYNC_STANDBY_DEST
          • oceanbase.CDB_OB_TABLE_LOCATIONS
          • oceanbase.CDB_OB_TABLEGROUP_PARTITIONS
          • oceanbase.CDB_OB_TABLEGROUP_SUBPARTITIONS
          • oceanbase.CDB_OB_TABLEGROUP_TABLES
          • oceanbase.CDB_OB_TABLEGROUPS
          • oceanbase.CDB_OB_TABLET_CHECKSUM_ERROR_INFO
          • oceanbase.CDB_OB_TABLET_REPLICAS
          • oceanbase.CDB_OB_TABLET_TO_LS
          • oceanbase.CDB_OB_TABLE_SPACE_USAGE
          • oceanbase.CDB_OB_TEMP_FILES
          • oceanbase.CDB_OB_TENANT_EVENT_HISTORY
          • oceanbase.CDB_OB_TENANT_FLASHBACK_LOG_SCN
          • oceanbase.CDB_OB_TRANSFER_PARTITION_TASKS
          • oceanbase.CDB_OB_TRANSFER_PARTITION_TASK_HISTORY
          • oceanbase.CDB_OB_TRANSFER_TASK_HISTORY
          • oceanbase.CDB_OB_TRANSFER_TASKS
          • oceanbase.CDB_OB_USERS
          • oceanbase.CDB_OB_VECTOR_INDEX_TASKS
          • oceanbase.CDB_OB_VECTOR_INDEX_TASK_HISTORY
          • oceanbase.CDB_OB_ZONE_MAJOR_COMPACTION
          • oceanbase.CDB_OBJECTS
          • oceanbase.CDB_PART_INDEXES
          • oceanbase.CDB_PART_KEY_COLUMNS
          • oceanbase.CDB_PART_TABLES
          • oceanbase.CDB_SCHEDULER_JOB_RUN_DETAILS
          • oceanbase.CDB_SUBPART_KEY_COLUMNS
          • oceanbase.CDB_SUBPARTITION_TEMPLATES
          • oceanbase.CDB_TAB_COL_STATISTICS
          • oceanbase.CDB_TAB_COLS
          • oceanbase.CDB_TAB_COLS_V$
          • oceanbase.CDB_TAB_PARTITIONS
          • oceanbase.CDB_TAB_SUBPARTITIONS
          • oceanbase.CDB_TABLES
          • oceanbase.CDB_WR_ACTIVE_SESSION_HISTORY
          • oceanbase.CDB_WR_CONTROL
          • oceanbase.CDB_WR_EVENT_NAME
          • oceanbase.CDB_WR_SNAPSHOT
          • oceanbase.CDB_WR_SQLSTAT
          • oceanbase.CDB_WR_SQLTEXT
          • oceanbase.CDB_WR_STATNAME
          • oceanbase.CDB_WR_SYS_TIME_MODEL
          • oceanbase.CDB_WR_SYSSTAT
          • oceanbase.CDB_WR_SYSTEM_EVENT
          • oceanbase.CDB_OB_EXTERNAL_RESOURCES
          • oceanbase.DBA_DB_LINKS
          • oceanbase.DBA_IND_PARTITIONS
          • oceanbase.DBA_IND_STATISTICS
          • oceanbase.DBA_IND_SUBPARTITIONS
          • oceanbase.DBA_INDEX_USAGE
          • oceanbase.DBA_MVIEW_DEPS
          • oceanbase.DBA_MVIEW_LOGS
          • oceanbase.DBA_MVIEW_RUNNING_JOBS
          • oceanbase.DBA_MVIEWS
          • oceanbase.DBA_MVREF_CHANGE_STATS
          • oceanbase.DBA_MVREF_RUN_STATS
          • oceanbase.DBA_MVREF_STATS
          • oceanbase.DBA_MVREF_STATS_PARAMS
          • oceanbase.DBA_MVREF_STATS_SYS_DEFAULTS
          • oceanbase.DBA_MVREF_STMT_STATS
          • oceanbase.DBA_OB_ACCESS_POINT
          • oceanbase.DBA_OB_AI_MODEL_ENDPOINTS
          • oceanbase.DBA_OB_AI_MODELS
          • oceanbase.DBA_OB_ARBITRATION_SERVICE
          • oceanbase.DBA_OB_ARCHIVE_DEST
          • oceanbase.DBA_OB_ARCHIVELOG
          • oceanbase.DBA_OB_ARCHIVELOG_PIECE_FILES
          • oceanbase.DBA_OB_ARCHIVELOG_SUMMARY
          • oceanbase.DBA_OB_AUTO_INCREMENT
          • DBA_OB_AUX_STATISTICS
          • oceanbase.DBA_OB_BACKUP_DELETE_JOB_HISTORY
          • oceanbase.DBA_OB_BACKUP_DELETE_JOBS
          • oceanbase.DBA_OB_BACKUP_DELETE_POLICY
          • oceanbase.DBA_OB_BACKUP_DELETE_TASK_HISTORY
          • oceanbase.DBA_OB_BACKUP_DELETE_TASKS
          • oceanbase.DBA_OB_BACKUP_JOB_HISTORY
          • oceanbase.DBA_OB_BACKUP_JOBS
          • oceanbase.DBA_OB_BACKUP_PARAMETER
          • oceanbase.DBA_OB_BACKUP_SET_FILES
          • oceanbase.DBA_OB_BACKUP_STORAGE_INFO
          • oceanbase.DBA_OB_BACKUP_STORAGE_INFO_HISTORY
          • oceanbase.DBA_OB_BACKUP_TASK_HISTORY
          • oceanbase.DBA_OB_BACKUP_TASKS
          • oceanbase.DBA_OB_BALANCE_JOB_HISTORY
          • oceanbase.DBA_OB_BALANCE_JOBS
          • oceanbase.DBA_OB_BALANCE_TASK_HISTORY
          • oceanbase.DBA_OB_BALANCE_TASKS
          • oceanbase.DBA_OB_CLONE_HISTORY
          • oceanbase.DBA_OB_CLONE_PROGRESS
          • oceanbase.DBA_OB_CLUSTER_EVENT_HISTORY
          • oceanbase.DBA_OB_CONCURRENT_LIMIT_SQL
          • oceanbase.DBA_OB_CCL_RULES
          • oceanbase.DBA_OB_CS_REPLICA_STATS
          • oceanbase.DBA_OB_DATA_DICTIONARY_IN_LOG
          • oceanbase.DBA_OB_DATABASE_PRIVILEGE
          • oceanbase.DBA_OB_DATABASES
          • oceanbase.DBA_OB_DEADLOCK_EVENT_HISTORY
          • oceanbase.DBA_OB_DYNAMIC_PARTITION_TABLES
          • oceanbase.DBA_OB_EXTERNAL_TABLE_FILES
          • oceanbase.DBA_OB_EXTERNAL_RESOURCES
          • DBA_OB_FORMAT_OUTLINES
          • oceanbase.DBA_OB_FREEZE_INFO
          • oceanbase.DBA_OB_IMPORT_TABLE_JOB_HISTORY
          • oceanbase.DBA_OB_IMPORT_TABLE_JOBS
          • oceanbase.DBA_OB_IMPORT_TABLE_TASK_HISTORY
          • oceanbase.DBA_OB_IMPORT_TABLE_TASKS
          • oceanbase.DBA_OB_KV_TTL_TASK_HISTORY
          • oceanbase.DBA_OB_KV_TTL_TASKS
          • oceanbase.DBA_OB_LOG_RESTORE_SOURCE
          • oceanbase.DBA_OB_LS
          • oceanbase.DBA_OB_LS_ARB_REPLICA_TASKS
          • oceanbase.DBA_OB_LS_ARB_REPLICA_TASK_HISTORY
          • oceanbase.DBA_OB_LS_HISTORY
          • oceanbase.DBA_OB_LS_LOCATIONS
          • oceanbase.DBA_OB_LS_LOG_ARCHIVE_PROGRESS
          • oceanbase.DBA_OB_LS_REPLICA_TASKS
          • oceanbase.DBA_OB_LS_REPLICA_TASK_HISTORY
          • oceanbase.DBA_OB_MAJOR_COMPACTION
          • oceanbase.DBA_OB_OUTLINE_CONCURRENT_HISTORY
          • oceanbase.DBA_OB_OUTLINES
          • oceanbase.DBA_OB_RECOVER_TABLE_JOB_HISTORY
          • oceanbase.DBA_OB_SERVICES
          • oceanbase.DBA_OB_RECOVER_TABLE_JOBS
          • oceanbase.DBA_OB_RESOURCE_POOLS
          • oceanbase.DBA_OB_RESTORE_HISTORY
          • oceanbase.DBA_OB_RESTORE_PROGRESS
          • oceanbase.DBA_OB_ROOTSERVICE_EVENT_HISTORY
          • oceanbase.DBA_OB_RSRC_IO_DIRECTIVES
          • oceanbase.DBA_OB_RSRC_DIRECTIVES
          • oceanbase.DBA_OB_SEQUENCE_OBJECTS
          • oceanbase.DBA_OB_SERVER_EVENT_HISTORY
          • oceanbase.DBA_OB_SERVER_JOBS
          • oceanbase.DBA_SCHEDULER_RUNNING_JOBS
          • oceanbase.DBA_OB_SERVERS
          • oceanbase.DBA_OB_SS_SPACE_USAGE
          • oceanbase.DBA_OB_STORAGE_IO_USAGE
          • oceanbase.DBA_OB_SYNC_STANDBY_DEST
          • oceanbase.DBA_OB_SYS_VARIABLES
          • oceanbase.DBA_OB_TABLE_LOCATIONS
          • oceanbase.DBA_OB_TABLE_OPT_STAT_GATHER_HISTORY
          • oceanbase.DBA_OB_TABLE_STAT_STALE_INFO
          • oceanbase.DBA_OB_TABLEGROUP_PARTITIONS
          • oceanbase.DBA_OB_TABLEGROUP_SUBPARTITIONS
          • oceanbase.DBA_OB_TABLEGROUP_TABLES
          • oceanbase.DBA_OB_TABLEGROUPS
          • oceanbase.DBA_OB_TABLET_REPLICAS
          • oceanbase.DBA_OB_TABLET_TO_LS
          • oceanbase.DBA_OB_TASK_OPT_STAT_GATHER_HISTORY
          • oceanbase.DBA_OB_TEMP_FILES
          • oceanbase.DBA_OB_TENANT_EVENT_HISTORY
          • oceanbase.DBA_OB_TENANT_FLASHBACK_LOG_SCN
          • oceanbase.DBA_OB_TENANT_JOBS
          • oceanbase.DBA_OB_TENANTS
          • oceanbase.DBA_OB_TRANSFER_PARTITION_TASKS
          • oceanbase.DBA_OB_TRANSFER_PARTITION_TASK_HISTORY
          • oceanbase.DBA_OB_TRANSFER_TASK_HISTORY
          • oceanbase.DBA_OB_TRANSFER_TASKS
          • DBA_OB_TRUSTED_ROOT_CERTIFICATE
          • oceanbase.DBA_OB_UNIT_CONFIGS
          • oceanbase.DBA_OB_UNIT_JOBS
          • oceanbase.DBA_OB_UNITS
          • oceanbase.DBA_OB_USER_DEFINED_RULES
          • oceanbase.DBA_OB_USERS
          • oceanbase.DBA_OB_VECTOR_INDEX_TASKS
          • oceanbase.DBA_OB_VECTOR_INDEX_TASK_HISTORY
          • oceanbase.DBA_OB_ZONE_MAJOR_COMPACTION
          • oceanbase.DBA_OB_ZONES
          • oceanbase.DBA_OB_ZONE_STORAGE
          • oceanbase.DBA_OBJECTS
          • oceanbase.DBA_PART_COL_STATISTICS
          • oceanbase.DBA_PART_HISTOGRAMS
          • oceanbase.DBA_PART_INDEXES
          • oceanbase.DBA_PART_KEY_COLUMNS
          • oceanbase.DBA_PART_TABLES
          • oceanbase.DBA_RECYCLEBIN
          • oceanbase.DBA_RSRC_CONSUMER_GROUPS
          • oceanbase.DBA_RSRC_GROUP_MAPPINGS
          • oceanbase.DBA_RSRC_PLAN_DIRECTIVES
          • oceanbase.DBA_RSRC_PLANS
          • oceanbase.DBA_SCHEDULER_JOBS
          • oceanbase.DBA_SCHEDULER_JOB_RUN_DETAILS
          • oceanbase.DBA_SCHEDULER_WINDOWS
          • oceanbase.DBA_SEQUENCES
          • oceanbase.DBA_SQL_MANAGEMENT_CONFIG
          • oceanbase.DBA_SQL_PLAN_BASELINES
          • oceanbase.DBA_SUBPART_COL_STATISTICS
          • oceanbase.DBA_SUBPART_HISTOGRAMS
          • oceanbase.DBA_SUBPART_KEY_COLUMNS
          • oceanbase.DBA_SUBPARTITION_TEMPLATES
          • oceanbase.DBA_TAB_COL_STATISTICS
          • oceanbase.DBA_TAB_HISTOGRAMS
          • oceanbase.DBA_TAB_MODIFICATIONS
          • oceanbase.DBA_TAB_PARTITIONS
          • oceanbase.DBA_TAB_STATISTICS
          • oceanbase.DBA_TAB_STATS_HISTORY
          • oceanbase.DBA_TAB_SUBPARTITIONS
          • oceanbase.DBA_TABLES
          • oceanbase.DBA_WR_ACTIVE_SESSION_HISTORY
          • oceanbase.DBA_WR_CONTROL
          • oceanbase.DBA_WR_EVENT_NAME
          • oceanbase.DBA_WR_SNAPSHOT
          • oceanbase.DBA_WR_SQLSTAT
          • oceanbase.DBA_WR_SQLTEXT
          • oceanbase.DBA_WR_STATNAME
          • oceanbase.DBA_WR_SYS_TIME_MODEL
          • oceanbase.DBA_WR_SYSSTAT
          • oceanbase.DBA_WR_SYSTEM_EVENT
        • Performance views
          • GV$ACTIVE_SESSION_HISTORY
          • GV$DML_STATS
          • GV$LATCH
          • GV$OB_ACTIVE_SESSION_HISTORY
          • GV$OB_COMPACTION_DIAGNOSE_INFO
          • GV$OB_COMPACTION_PROGRESS
          • GV$OB_COMPACTION_SUGGESTIONS
          • GV$OB_CGROUP_CONFIG
          • GV$OB_DTL_INTERM_RESULT_MONITOR
          • GV$OB_FLT_TRACE_CONFIG
          • GV$OB_FUNCTION_IO_STAT
          • GV$OB_GROUP_IO_STAT
          • GV$OB_HMS_CLIENT_POOL_STAT
          • GV$OB_HNSW_INDEX_INFO
          • GV$OB_IO_BENCHMARK
          • GV$OB_IO_CALIBRATION_STATUS
          • GV$OB_IVF_INDEX_INFO
          • GV$OB_KVCACHE
          • GV$OB_KV_GROUP_COMMIT_STATUS
          • GV$OB_LOG_STAT
          • GV$OB_LOG_TRANSPORT_DEST_STAT
          • GV$OB_LS_SNAPSHOTS
          • GV$OB_MEMORY
          • GV$OB_MEMSTORE
          • GV$OB_MEMSTORE_INFO
          • GV$OB_MERGE_INFO
          • GV$OB_NIC_INFO
          • GV$OB_RPC_INCOMING
          • GV$OB_RPC_OUTGOING
          • GV$OB_PARAMETERS
          • GV$OB_PLAN_CACHE_PLAN_EXPLAIN
          • GV$OB_PLAN_CACHE_PLAN_STAT
          • GV$OB_PLAN_CACHE_STAT
          • GV$OB_PROCESSLIST
          • GV$OB_PS_ITEM_INFO
          • GV$OB_PS_STAT
          • GV$OB_PX_P2P_DATAHUB
          • GV$OB_PX_TARGET_MONITOR
          • GV$OB_PX_WORKER_STAT
          • GV$OB_QUERY_RESPONSE_TIME_HISTOGRAM
          • GV$OB_RES_MGR_SYSSTAT
          • GV$OB_SERVER_SCHEMA_INFO
          • GV$OB_SERVERS
          • GV$OB_SERVER_STORAGE
          • GV$OB_SESS_TIME_MODEL
          • GV$OB_SESSION
          • GV$OB_SHARED_STORAGE_QUOTA
          • GV$OB_SQL_AUDIT
          • GV$OB_SQL_CCL_STATUS
          • GV$SQL_JOIN_FILTER
          • GV$OB_SQL_PLAN
          • GV$SQL_PLAN_MONITOR
          • GV$OB_SQL_WORKAREA_MEMORY_INFO
          • GV$OB_SQLSTAT
          • GV$OB_SSTABLES
          • GV$OB_SS_LOCAL_CACHE
          • GV$OB_SS_OBJECT_TYPE_IO_STAT
          • GV$OB_STORAGE_CACHE_TASKS
          • GV$OB_SYS_TIME_MODEL
          • GV$OB_TABLET_COMPACTION_HISTORY
          • GV$OB_TABLET_COMPACTION_PROGRESS
          • GV$OB_TABLET_LOCAL_CACHE
          • GV$OB_TENANT_MEMORY
          • GV$OB_TENANT_RESOURCE_LIMIT
          • GV$OB_TENANT_RESOURCE_LIMIT_DETAIL
          • GV$OB_TENANT_RUNTIME_INFO
          • GV$OB_TRANSACTION_PARTICIPANTS
          • GV$OB_TRANSACTION_SCHEDULERS
          • GV$OB_UNITS
          • GV$OB_VECTOR_MEMORY
          • GV$SESSION_EVENT
          • GV$SESSION_LONGOPS
          • GV$SESSION_WAIT
          • GV$SESSION_WAIT_HISTORY
          • GV$SESSTAT
          • GV$SQL_WORKAREA
          • GV$SQL_WORKAREA_ACTIVE
          • GV$SQL_WORKAREA_HISTOGRAM
          • GV$SYSSTAT
          • GV$SYSTEM_EVENT
          • gv$tenant
          • gv$tenant_memstore_allocator_info
          • GV$OB_ARBITRATION_MEMBER_INFO
          • GV$OB_ARBITRATION_SERVICE_STATUS
          • GV$OB_KV_CLIENT_INFO
          • GV$OB_LOCKS
          • GV$OB_OPT_STAT_GATHER_MONITOR
          • GV$OB_THREAD
          • GV$OB_PL_CACHE_OBJECT
          • GV$UNIT
          • V$OB_PL_CACHE_OBJECT
          • V$ACTIVE_SESSION_HISTORY
          • V$DML_STATS
          • V$ENCRYPTED_TABLESPACES
          • V$EVENT_NAME
          • V$LATCH
          • V$OB_ACTIVE_SESSION_HISTORY
          • V$OB_ARCHIVE_DEST_STATUS
          • V$OB_COMPACTION_DIAGNOSE_INFO
          • V$OB_COMPACTION_PROGRESS
          • V$OB_COMPACTION_SUGGESTIONS
          • V$OB_COMPATIBILITY_CONTROL
          • V$OB_CGROUP_CONFIG
          • V$OB_DTL_INTERM_RESULT_MONITOR
          • V$OB_DYNAMIC_PARTITION_TABLES
          • V$OB_ENCRYPTED_TABLES
          • V$OB_FUNCTION_IO_STAT
          • V$OB_GROUP_IO_STAT
          • V$OB_HMS_CLIENT_POOL_STAT
          • V$OB_IO_BENCHMARK
          • V$OB_HNSW_INDEX_INFO
          • V$OB_IO_CALIBRATION_STATUS
          • V$OB_IVF_INDEX_INFO
          • V$OB_KVCACHE
          • V$OB_KV_CLIENT_INFO
          • V$OB_KV_GROUP_COMMIT_STATUS
          • V$OB_LOG_STAT
          • V$OB_LOG_TRANSPORT_DEST_STAT
          • V$OB_LS_LOG_RESTORE_STATUS
          • V$OB_LS_REPLICA_TASK_PLAN
          • V$OB_LS_SNAPSHOTS
          • V$OB_MEMORY
          • V$OB_MEMSTORE
          • V$OB_MEMSTORE_INFO
          • V$OB_MERGE_INFO
          • V$OB_NIC_INFO
          • V$OB_RPC_INCOMING
          • V$OB_RPC_OUTGOING
          • V$OB_PARAMETERS
          • V$OB_PLAN_CACHE_PLAN_EXPLAIN
          • V$OB_PLAN_CACHE_PLAN_STAT
          • V$OB_PLAN_CACHE_STAT
          • V$OB_PROCESSLIST
          • V$OB_PS_ITEM_INFO
          • V$OB_PS_STAT
          • V$OB_PX_P2P_DATAHUB
          • V$OB_PX_TARGET_MONITOR
          • V$OB_PX_WORKER_STAT
          • V$OB_QUERY_RESPONSE_TIME_HISTOGRAM
          • V$OB_RES_MGR_SYSSTAT
          • V$OB_SERVER_SCHEMA_INFO
          • V$OB_SERVERS
          • V$OB_SERVER_STORAGE
          • V$OB_SESS_TIME_MODEL
          • V$OB_SESSION
          • V$SESSION_EVENT
          • V$OB_SHARED_STORAGE_QUOTA
          • V$OB_SQL_AUDIT
          • V$OB_SQL_CCL_STATUS
          • V$SQL_JOIN_FILTER
          • V$OB_SQL_PLAN
          • V$OB_SQL_WORKAREA_MEMORY_INFO
          • V$OB_SQLSTAT
          • V$OB_SS_SSTABLES
          • V$OB_SSTABLES
          • V$OB_SS_LOCAL_CACHE
          • V$OB_SS_OBJECT_TYPE_IO_STAT
          • V$OB_STORAGE_CACHE_TASKS
          • V$OB_SYS_TIME_MODEL
          • V$OB_TABLET_COMPACTION_HISTORY
          • V$OB_TABLET_COMPACTION_PROGRESS
          • V$OB_TABLET_LOCAL_CACHE
          • V$OB_TENANT_MEMORY
          • V$OB_TENANT_RESOURCE_LIMIT
          • V$OB_TENANT_RESOURCE_LIMIT_DETAIL
          • V$OB_TENANT_RUNTIME_INFO
          • V$OB_TIMESTAMP_SERVICE
          • V$OB_TRANSACTION_PARTICIPANTS
          • V$OB_TRANSACTION_SCHEDULERS
          • V$OB_UNITS
          • V$RESTORE_POINT
          • V$RSRC_PLAN
          • V$SESSION_LONGOPS
          • V$SESSION_WAIT
          • V$SESSION_WAIT_HISTORY
          • V$SESSTAT
          • V$SQL_MONITOR_STATNAME
          • V$SQL_PLAN_MONITOR
          • V$SQL_WORKAREA
          • V$SQL_WORKAREA_ACTIVE
          • V$SQL_WORKAREA_HISTOGRAM
          • V$STATNAME
          • V$SYSSTAT
          • V$SYSTEM_EVENT
          • V$OB_ARBITRATION_MEMBER_INFO
          • V$OB_ARBITRATION_SERVICE_STATUS
          • V$OB_LOCKS
          • V$OB_OPT_STAT_GATHER_MONITOR
          • V$OB_THREAD
          • V$OB_VECTOR_MEMORY
          • v$tenant_memstore_allocator_info
          • V$UNIT
      • MySQL tenant views
        • Dictionary views
          • information_schema.CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS
          • information_schema.CHARACTER_SETS
          • information_schema.CHECK_CONSTRAINTS
          • information_schema.COLLATION_CHARACTER_SET_APPLICABILITY
          • information_schema.COLLATIONS
          • information_schema.COLUMN_PRIVILEGES
          • information_schema.COLUMNS
          • information_schema.ENGINES
          • information_schema.events
          • information_schema.GLOBAL_STATUS
          • information_schema.GLOBAL_VARIABLES
          • information_schema.KEY_COLUMN_USAGE
          • information_schema.PARAMETERS
          • information_schema.PARTITIONS
          • information_schema.PROCESSLIST
          • information_schema.QUERY_RESPONSE_TIME
          • information_schema.REFERENTIAL_CONSTRAINTS
          • information_schema.role_table_grants
          • information_schema.role_column_grants
          • information_schema.role_routine_grants
          • information_schema.ROUTINES
          • information_schema.SCHEMA_PRIVILEGES
          • information_schema.SCHEMATA
          • information_schema.SESSION_STATUS
          • information_schema.SESSION_VARIABLES
          • information_schema.ST_GEOMETRY_COLUMNS
          • information_schema.ST_SPATIAL_REFERENCE_SYSTEMS
          • information_schema.STATISTICS
          • information_schema.TABLE_CONSTRAINTS
          • information_schema.TABLE_PRIVILEGES
          • information_schema.TABLES
          • information_schema.USER_PRIVILEGES
          • information_schema.VIEW_TABLE_USAGE
          • information_schema.VIEWS
          • mysql.audit_log_filter
          • mysql.audit_log_user
          • mysql.columns_priv
          • mysql.db
          • mysql.default_roles
          • mysql.help_category
          • mysql.help_keyword
          • mysql.help_relation
          • mysql.help_topic
          • mysql.proc
          • mysql.procs_priv
          • mysql.role_edges
          • mysql.time_zone
          • mysql.time_zone_name
          • mysql.time_zone_transition
          • mysql.time_zone_transition_type
          • mysql.user
          • oceanbase.ALL_OB_EXTERNAL_TABLE_FILES
          • oceanbase.DBA_DB_LINKS
          • oceanbase.DBA_IND_PARTITIONS
          • oceanbase.DBA_IND_STATISTICS
          • oceanbase.DBA_IND_SUBPARTITIONS
          • oceanbase.DBA_INDEX_USAGE
          • oceanbase.DBA_MVIEW_DEPS
          • oceanbase.DBA_MVIEW_LOGS
          • oceanbase.DBA_MVIEW_RUNNING_JOBS
          • oceanbase.DBA_MVIEWS
          • oceanbase.DBA_MVREF_CHANGE_STATS
          • oceanbase.DBA_MVREF_RUN_STATS
          • oceanbase.DBA_MVREF_STATS
          • oceanbase.DBA_MVREF_STATS_PARAMS
          • oceanbase.DBA_MVREF_STATS_SYS_DEFAULTS
          • oceanbase.DBA_MVREF_STMT_STATS
          • oceanbase.DBA_OB_ACCESS_POINT
          • oceanbase.DBA_OB_AI_MODEL_ENDPOINTS
          • oceanbase.DBA_OB_AI_MODELS
          • oceanbase.DBA_OB_ARCHIVE_DEST
          • oceanbase.DBA_OB_ARCHIVELOG
          • oceanbase.DBA_OB_ARCHIVELOG_PIECE_FILES
          • oceanbase.DBA_OB_ARCHIVELOG_SUMMARY
          • oceanbase.DBA_OB_AUTO_INCREMENT
          • DBA_OB_AUX_STATISTICS
          • oceanbase.DBA_OB_BACKUP_DELETE_JOB_HISTORY
          • oceanbase.DBA_OB_BACKUP_DELETE_JOBS
          • oceanbase.DBA_OB_BACKUP_DELETE_POLICY
          • oceanbase.DBA_OB_BACKUP_DELETE_TASK_HISTORY
          • oceanbase.DBA_OB_BACKUP_DELETE_TASKS
          • oceanbase.DBA_OB_BACKUP_JOB_HISTORY
          • oceanbase.DBA_OB_BACKUP_JOBS
          • oceanbase.DBA_OB_BACKUP_PARAMETER
          • oceanbase.DBA_OB_BACKUP_SET_FILES
          • oceanbase.DBA_OB_BACKUP_STORAGE_INFO
          • oceanbase.DBA_OB_BACKUP_STORAGE_INFO_HISTORY
          • oceanbase.DBA_OB_BACKUP_TASK_HISTORY
          • oceanbase.DBA_OB_BACKUP_TASKS
          • oceanbase.DBA_OB_BALANCE_JOB_HISTORY
          • oceanbase.DBA_OB_BALANCE_JOBS
          • oceanbase.DBA_OB_BALANCE_TASK_HISTORY
          • oceanbase.DBA_OB_BALANCE_TASKS
          • oceanbase.DBA_OB_CONCURRENT_LIMIT_SQL
          • oceanbase.DBA_OB_CCL_RULES
          • oceanbase.DBA_OB_CS_REPLICA_STATS
          • oceanbase.DBA_OB_DATA_DICTIONARY_IN_LOG
          • oceanbase.DBA_OB_DATABASE_PRIVILEGE
          • oceanbase.DBA_OB_DATABASES
          • oceanbase.DBA_OB_DEADLOCK_EVENT_HISTORY
          • oceanbase.DBA_OB_DYNAMIC_PARTITION_TABLES
          • oceanbase.DBA_OB_EXTERNAL_TABLE_FILES
          • oceanbase.DBA_OB_EXTERNAL_RESOURCES
          • DBA_OB_FORMAT_OUTLINES
          • oceanbase.DBA_OB_FREEZE_INFO
          • oceanbase.DBA_OB_IMPORT_TABLE_JOB_HISTORY
          • oceanbase.DBA_OB_IMPORT_TABLE_JOBS
          • oceanbase.DBA_OB_IMPORT_TABLE_TASK_HISTORY
          • oceanbase.DBA_OB_IMPORT_TABLE_TASKS
          • oceanbase.DBA_OB_KV_TTL_TASK_HISTORY
          • oceanbase.DBA_OB_KV_TTL_TASKS
          • oceanbase.DBA_OB_LOG_RESTORE_SOURCE
          • oceanbase.DBA_OB_LS
          • oceanbase.DBA_OB_LS_ARB_REPLICA_TASKS
          • oceanbase.DBA_OB_LS_ARB_REPLICA_TASK_HISTORY
          • oceanbase.DBA_OB_LS_HISTORY
          • oceanbase.DBA_OB_LS_LOCATIONS
          • oceanbase.DBA_OB_LS_LOG_ARCHIVE_PROGRESS
          • oceanbase.DBA_OB_LS_REPLICA_TASKS
          • oceanbase.DBA_OB_LS_REPLICA_TASK_HISTORY
          • oceanbase.DBA_OB_MAJOR_COMPACTION
          • oceanbase.DBA_OB_OBJECT_BALANCE_WEIGHT
          • oceanbase.DBA_OB_OUTLINE_CONCURRENT_HISTORY
          • oceanbase.DBA_OB_OUTLINES
          • oceanbase.DBA_OB_RECOVER_TABLE_JOB_HISTORY
          • oceanbase.DBA_OB_RECOVER_TABLE_JOBS
          • oceanbase.DBA_OB_SERVICES
          • oceanbase.DBA_OB_RESTORE_HISTORY
          • oceanbase.DBA_OB_RESTORE_PROGRESS
          • oceanbase.DBA_OB_RSRC_IO_DIRECTIVES
          • oceanbase.DBA_OB_RSRC_DIRECTIVES
          • oceanbase.DBA_OB_SENSITIVE_COLUMNS
          • oceanbase.DBA_OB_SENSITIVE_RULE_PLAINACCESS_USERS
          • oceanbase.DBA_OB_SENSITIVE_RULES
          • oceanbase.DBA_OB_SEQUENCE_OBJECTS
          • oceanbase.DBA_OB_SS_SPACE_USAGE
          • oceanbase.DBA_OB_STORAGE_IO_USAGE
          • oceanbase.DBA_OB_SYNC_STANDBY_DEST
          • oceanbase.DBA_OB_SYS_VARIABLES
          • oceanbase.DBA_OB_TABLE_LOCATIONS
          • oceanbase.DBA_OB_TABLE_OPT_STAT_GATHER_HISTORY
          • oceanbase.DBA_OB_TABLE_STAT_STALE_INFO
          • oceanbase.DBA_OB_TABLEGROUP_PARTITIONS
          • oceanbase.DBA_OB_TABLEGROUP_SUBPARTITIONS
          • oceanbase.DBA_OB_TABLEGROUP_TABLES
          • oceanbase.DBA_OB_TABLEGROUPS
          • oceanbase.DBA_OB_TABLET_REPLICAS
          • oceanbase.DBA_OB_TABLE_SPACE_USAGE
          • oceanbase.DBA_OB_TABLET_TO_LS
          • oceanbase.DBA_OB_TASK_OPT_STAT_GATHER_HISTORY
          • oceanbase.DBA_OB_TENANT_EVENT_HISTORY
          • oceanbase.DBA_OB_TENANTS
          • oceanbase.DBA_OB_TEMP_FILES
          • oceanbase.DBA_OB_TRANSFER_PARTITION_TASKS
          • oceanbase.DBA_OB_TRANSFER_PARTITION_TASK_HISTORY
          • oceanbase.DBA_OB_TRANSFER_TASK_HISTORY
          • oceanbase.DBA_OB_TRANSFER_TASKS
          • oceanbase.DBA_OB_USER_DEFINED_RULES
          • oceanbase.DBA_OB_USERS
          • oceanbase.DBA_OB_VECTOR_INDEX_TASKS
          • oceanbase.DBA_OB_VECTOR_INDEX_TASK_HISTORY
          • oceanbase.DBA_OB_ZONE_MAJOR_COMPACTION
          • oceanbase.DBA_OBJECTS
          • oceanbase.DBA_PART_COL_STATISTICS
          • oceanbase.DBA_PART_HISTOGRAMS
          • oceanbase.DBA_PART_INDEXES
          • oceanbase.DBA_PART_KEY_COLUMNS
          • oceanbase.DBA_PART_TABLES
          • oceanbase.DBA_RECYCLEBIN
          • oceanbase.DBA_RSRC_CONSUMER_GROUPS
          • oceanbase.DBA_RSRC_GROUP_MAPPINGS
          • oceanbase.DBA_RSRC_PLAN_DIRECTIVES
          • oceanbase.DBA_RSRC_PLANS
          • oceanbase.DBA_SCHEDULER_JOBS
          • oceanbase.DBA_SCHEDULER_RUNNING_JOBS
          • oceanbase.DBA_SCHEDULER_JOB_RUN_DETAILS
          • oceanbase.DBA_SCHEDULER_WINDOWS
          • oceanbase.DBA_SEQUENCES
          • oceanbase.DBA_SQL_MANAGEMENT_CONFIG
          • oceanbase.DBA_SQL_PLAN_BASELINES
          • oceanbase.DBA_SUBPART_COL_STATISTICS
          • oceanbase.DBA_SUBPART_HISTOGRAMS
          • oceanbase.DBA_SUBPART_KEY_COLUMNS
          • oceanbase.DBA_SUBPARTITION_TEMPLATES
          • oceanbase.DBA_TAB_COL_STATISTICS
          • oceanbase.DBA_TAB_HISTOGRAMS
          • oceanbase.DBA_TAB_MODIFICATIONS
          • oceanbase.DBA_TAB_PARTITIONS
          • oceanbase.DBA_TAB_STATISTICS
          • oceanbase.DBA_TAB_STATS_HISTORY
          • oceanbase.DBA_TAB_SUBPARTITIONS
          • oceanbase.DBA_TABLES
          • oceanbase.DBA_OB_TENANT_FLASHBACK_LOG_SCN
          • oceanbase.DBA_WR_ACTIVE_SESSION_HISTORY
          • oceanbase.DBA_WR_CONTROL
          • oceanbase.DBA_WR_EVENT_NAME
          • oceanbase.DBA_WR_SNAPSHOT
          • oceanbase.DBA_WR_SQLSTAT
          • oceanbase.DBA_WR_SQLTEXT
          • oceanbase.DBA_WR_STATNAME
          • oceanbase.DBA_WR_SYS_TIME_MODEL
          • oceanbase.DBA_WR_SYSSTAT
          • oceanbase.DBA_WR_SYSTEM_EVENT
        • Performance views
          • GV$ACTIVE_SESSION_HISTORY
          • GV$DML_STATS
          • GV$LATCH
          • GV$OB_ACTIVE_SESSION_HISTORY
          • GV$OB_COMPACTION_DIAGNOSE_INFO
          • GV$OB_COMPACTION_PROGRESS
          • GV$OB_COMPACTION_SUGGESTIONS
          • GV$OB_CGROUP_CONFIG
          • GV$OB_DTL_INTERM_RESULT_MONITOR
          • GV$OB_FLT_TRACE_CONFIG
          • GV$OB_FUNCTION_IO_STAT
          • GV$OB_GROUP_IO_STAT
          • GV$OB_HMS_CLIENT_POOL_STAT
          • GV$OB_HNWS_INDEX_INFO
          • GV$OB_IVF_INDEX_INFO
          • GV$OB_KVCACHE
          • GV$OB_KV_CLIENT_INFO
          • GV$OB_KV_GROUP_COMMIT_STATUS
          • GV$OB_LOG_STAT
          • GV$OB_LOG_TRANSPORT_DEST_STAT
          • GV$OB_LS_SNAPSHOTS
          • GV$OB_MEMORY
          • GV$OB_MEMSTORE
          • GV$OB_MEMSTORE_INFO
          • GV$OB_MERGE_INFO
          • GV$OB_NIC_INFO
          • GV$OB_RPC_INCOMING
          • GV$OB_RPC_OUTGOING
          • GV$OB_PARAMETERS
          • GV$OB_PLAN_CACHE_PLAN_EXPLAIN
          • GV$OB_PLAN_CACHE_PLAN_STAT
          • GV$OB_PLAN_CACHE_STAT
          • GV$OB_PROCESSLIST
          • GV$OB_PS_ITEM_INFO
          • GV$OB_PS_STAT
          • GV$OB_PX_P2P_DATAHUB
          • GV$OB_PX_TARGET_MONITOR
          • GV$OB_PX_WORKER_STAT
          • GV$OB_QUERY_RESPONSE_TIME_HISTOGRAM
          • GV$OB_RES_MGR_SYSSTAT
          • GV$OB_SERVER_SCHEMA_INFO
          • GV$OB_SESS_TIME_MODEL
          • GV$OB_SESSION
          • GV$OB_SHARED_STORAGE_QUOTA
          • GV$OB_SQL_AUDIT
          • GV$OB_SQL_CCL_STATUS
          • GV$SQL_JOIN_FILTER
          • GV$OB_SQL_PLAN
          • GV$OB_SQL_WORKAREA_MEMORY_INFO
          • GV$OB_SQLSTAT
          • GV$OB_SSTABLES
          • GV$OB_SS_LOCAL_CACHE
          • GV$OB_SS_OBJECT_TYPE_IO_STAT
          • GV$OB_STORAGE_CACHE_TASKS
          • GV$OB_SYS_TIME_MODEL
          • GV$OB_TABLET_COMPACTION_HISTORY
          • GV$OB_TABLET_COMPACTION_PROGRESS
          • GV$OB_TABLET_LOCAL_CACHE
          • GV$OB_TENANT_MEMORY
          • GV$OB_TENANT_RESOURCE_LIMIT
          • GV$OB_TENANT_RESOURCE_LIMIT_DETAIL
          • GV$OB_TRANSACTION_PARTICIPANTS
          • GV$OB_TRANSACTION_SCHEDULERS
          • GV$OB_UNITS
          • GV$OB_VECTOR_MEMORY
          • GV$SESSION_EVENT
          • GV$SESSION_LONGOPS
          • GV$SESSION_WAIT
          • GV$SESSION_WAIT_HISTORY
          • GV$SESSTAT
          • GV$SQL_PLAN_MONITOR
          • GV$SQL_WORKAREA
          • GV$SQL_WORKAREA_ACTIVE
          • GV$SQL_WORKAREA_HISTOGRAM
          • GV$SYSSTAT
          • GV$SYSTEM_EVENT
          • GV$OB_ARBITRATION_MEMBER_INFO
          • GV$OB_ARBITRATION_SERVICE_STATUS
          • GV$OB_LOCKS
          • GV$OB_OPT_STAT_GATHER_MONITOR
          • GV$OB_THREAD
          • GV$OB_PL_CACHE_OBJECT
          • V$OB_PL_CACHE_OBJECT
          • V$ACTIVE_SESSION_HISTORY
          • V$DML_STATS
          • V$EVENT_NAME
          • V$LATCH
          • V$OB_ACTIVE_SESSION_HISTORY
          • V$OB_ARCHIVE_DEST_STATUS
          • V$OB_COMPACTION_DIAGNOSE_INFO
          • V$OB_COMPACTION_PROGRESS
          • V$OB_COMPACTION_SUGGESTIONS
          • V$OB_COMPATIBILITY_CONTROL
          • V$OB_CGROUP_CONFIG
          • V$OB_DTL_INTERM_RESULT_MONITOR
          • V$OB_DYNAMIC_PARTITION_TABLES
          • V$OB_ENCRYPTED_TABLES
          • V$ENCRYPTED_TABLESPACES
          • V$OB_FUNCTION_IO_STAT
          • V$OB_GROUP_IO_STAT
          • V$OB_HMS_CLIENT_POOL_STAT
          • V$OB_HNWS_INDEX_INFO
          • V$OB_IVF_INDEX_INFO
          • V$OB_KVCACHE
          • V$OB_KV_CLIENT_INFO
          • V$OB_KV_GROUP_COMMIT_STATUS
          • V$OB_LOG_STAT
          • V$OB_LOG_TRANSPORT_DEST_STAT
          • V$OB_LS_LOG_RESTORE_STATUS
          • V$OB_LS_REPLICA_TASK_PLAN
          • V$OB_LS_SNAPSHOTS
          • V$OB_MEMORY
          • V$OB_MEMSTORE
          • V$OB_MEMSTORE_INFO
          • V$OB_MERGE_INFO
          • V$OB_NIC_INFO
          • V$OB_RPC_INCOMING
          • V$OB_RPC_OUTGOING
          • V$OB_PARAMETERS
          • V$OB_PLAN_CACHE_PLAN_EXPLAIN
          • V$OB_PLAN_CACHE_PLAN_STAT
          • V$OB_PLAN_CACHE_STAT
          • V$OB_PROCESSLIST
          • V$OB_PS_ITEM_INFO
          • V$OB_PS_STAT
          • V$OB_PX_P2P_DATAHUB
          • V$OB_PX_TARGET_MONITOR
          • V$OB_PX_WORKER_STAT
          • V$OB_QUERY_RESPONSE_TIME_HISTOGRAM
          • V$OB_RES_MGR_SYSSTAT
          • V$RSRC_PLAN
          • V$OB_SERVER_SCHEMA_INFO
          • V$OB_SESS_TIME_MODEL
          • V$OB_SESSION
          • V$SESSION_EVENT
          • V$OB_SHARED_STORAGE_QUOTA
          • V$OB_SQL_AUDIT
          • V$OB_SQL_CCL_STATUS
          • V$SQL_JOIN_FILTER
          • V$OB_SQL_PLAN
          • V$OB_SQL_WORKAREA_MEMORY_INFO
          • V$OB_SQLSTAT
          • V$OB_SS_SSTABLES
          • V$OB_SSTABLES
          • V$OB_SS_LOCAL_CACHE
          • V$OB_SS_OBJECT_TYPE_IO_STAT
          • V$OB_STORAGE_CACHE_TASKS
          • V$OB_SYS_TIME_MODEL
          • V$OB_TABLET_COMPACTION_HISTORY
          • V$OB_TABLET_COMPACTION_PROGRESS
          • V$OB_TABLET_LOCAL_CACHE
          • V$OB_TENANT_MEMORY
          • V$OB_TENANT_RESOURCE_LIMIT
          • V$OB_TENANT_RESOURCE_LIMIT_DETAIL
          • V$OB_TIMESTAMP_SERVICE
          • V$OB_TRANSACTION_PARTICIPANTS
          • V$OB_TRANSACTION_SCHEDULERS
          • V$OB_UNITS
          • V$OB_VECTOR_MEMORY
          • V$RESTORE_POINT
          • V$SESSION_LONGOPS
          • V$SESSION_WAIT
          • V$SESSION_WAIT_HISTORY
          • V$SESSTAT
          • V$SQL_MONITOR_STATNAME
          • V$SQL_PLAN_MONITOR
          • V$SQL_WORKAREA
          • V$SQL_WORKAREA_ACTIVE
          • V$SQL_WORKAREA_HISTOGRAM
          • V$STATNAME
          • V$SYSSTAT
          • V$SYSTEM_EVENT
          • V$OB_ARBITRATION_MEMBER_INFO
          • V$OB_ARBITRATION_SERVICE_STATUS
          • V$OB_LOCKS
          • V$OB_OPT_STAT_GATHER_MONITOR
          • V$OB_THREAD
      • Oracle tenant views
        • Dictionary views
          • ALL_ALL_TABLES
          • ALL_ARGUMENTS
          • ALL_COL_COMMENTS
          • ALL_COL_PRIVS
          • ALL_COLL_TYPES
          • ALL_CONS_COLUMNS
          • ALL_CONSTRAINTS
          • ALL_DB_LINKS
          • ALL_DEF_AUDIT_OPTS
          • ALL_DEPENDENCIES
          • ALL_DIRECTORIES
          • ALL_ERRORS
          • ALL_IND_COLUMNS
          • ALL_IND_EXPRESSIONS
          • ALL_IND_PARTITIONS
          • ALL_IND_STATISTICS
          • ALL_IND_SUBPARTITIONS
          • ALL_INDEXES
          • ALL_METHOD_PARAMS
          • ALL_MVIEW_LOGS
          • ALL_MVIEWS
          • ALL_OB_EXTERNAL_TABLE_FILES
          • ALL_OBJECTS
          • ALL_OB_SOURCE
          • ALL_PART_COL_STATISTICS
          • ALL_PART_HISTOGRAMS
          • ALL_PART_INDEXES
          • ALL_PLSQL_TYPES
          • ALL_PLSQL_COLL_TYPES
          • ALL_PLSQL_TYPE_ATTRS
          • ALL_PART_KEY_COLUMNS
          • ALL_PART_TABLES
          • ALL_POLICIES
          • ALL_POLICY_CONTEXTS
          • ALL_POLICY_GROUPS
          • ALL_PROCEDURES
          • ALL_PROFILES
          • ALL_SCHEDULER_JOB_ARGS
          • ALL_SCHEDULER_PROGRAM_ARGS
          • ALL_SCHEDULER_WINDOWS
          • ALL_SEC_RELEVANT_COLS
          • ALL_SEQUENCES
          • ALL_SOURCE
          • ALL_SUBPART_COL_STATISTICS
          • ALL_SUBPART_HISTOGRAMS
          • ALL_SUBPART_KEY_COLUMNS
          • ALL_SUBPARTITION_TEMPLATES
          • ALL_SYNONYMS
          • ALL_TAB_COL_STATISTICS
          • ALL_TAB_COLS
          • ALL_TAB_COLUMNS
          • ALL_TAB_COMMENTS
          • ALL_TAB_HISTOGRAMS
          • ALL_TAB_MODIFICATIONS
          • ALL_TAB_PARTITIONS
          • ALL_TAB_PRIVS
          • ALL_TAB_STATISTICS
          • ALL_TAB_STATS_HISTORY
          • ALL_TAB_SUBPARTITIONS
          • ALL_TABLES
          • ALL_TRIGGER_ORDERING
          • ALL_TRIGGERS
          • ALL_TYPE_ATTRS
          • ALL_TYPE_METHODS
          • ALL_TYPES
          • ALL_USERS
          • ALL_VIEWS
          • AUDIT_ACTIONS
          • DBA_ALL_TABLES
          • DBA_ARGUMENTS
          • DBA_AUDIT_EXISTS
          • DBA_AUDIT_OBJECT
          • DBA_AUDIT_SESSION
          • DBA_AUDIT_STATEMENT
          • DBA_AUDIT_TRAIL
          • DBA_COL_COMMENTS
          • DBA_COL_PRIVS
          • DBA_COLL_TYPES
          • DBA_CONS_COLUMNS
          • DBA_CONSTRAINTS
          • DBA_CONTEXT
          • DBA_DB_LINKS
          • DBA_DEPENDENCIES
          • DBA_DIRECTORIES
          • DBA_ERRORS
          • DBA_IND_COLUMNS
          • DBA_IND_EXPRESSIONS
          • DBA_IND_PARTITIONS
          • DBA_IND_STATISTICS
          • DBA_IND_SUBPARTITIONS
          • DBA_INDEX_USAGE
          • DBA_INDEXES
          • DBA_JOBS
          • DBA_JOBS_RUNNING
          • DBA_METHOD_PARAMS
          • DBA_MVIEW_DEPS
          • DBA_MVIEW_LOGS
          • DBA_MVIEW_RUNNING_JOBS
          • DBA_MVIEWS
          • DBA_MVREF_CHANGE_STATS
          • DBA_MVREF_RUN_STATS
          • DBA_MVREF_STATS
          • DBA_MVREF_STATS_PARAMS
          • DBA_MVREF_STATS_SYS_DEFAULTS
          • DBA_MVREF_STMT_STATS
          • DBA_OB_ACCESS_POINT
          • DBA_OB_ARCHIVE_DEST
          • DBA_OB_ARCHIVELOG
          • DBA_OB_ARCHIVELOG_PIECE_FILES
          • DBA_OB_ARCHIVELOG_SUMMARY
          • DBA_OB_AUX_STATISTICS
          • DBA_OB_BACKUP_DELETE_JOB_HISTORY
          • DBA_OB_BACKUP_DELETE_JOBS
          • DBA_OB_BACKUP_DELETE_POLICY
          • DBA_OB_BACKUP_DELETE_TASK_HISTORY
          • DBA_OB_BACKUP_DELETE_TASKS
          • DBA_OB_BACKUP_JOB_HISTORY
          • DBA_OB_BACKUP_JOBS
          • DBA_OB_BACKUP_PARAMETER
          • DBA_OB_BACKUP_SET_FILES
          • DBA_OB_BACKUP_STORAGE_INFO
          • DBA_OB_BACKUP_STORAGE_INFO_HISTORY
          • DBA_OB_BACKUP_TASK_HISTORY
          • DBA_OB_BACKUP_TASKS
          • DBA_OB_BALANCE_JOB_HISTORY
          • DBA_OB_BALANCE_JOBS
          • DBA_OB_BALANCE_TASK_HISTORY
          • DBA_OB_BALANCE_TASKS
          • DBA_OB_CONCURRENT_LIMIT_SQL
          • DBA_OB_CS_REPLICA_STATS
          • DBA_OB_CCL_RULES
          • DBA_OB_DATA_DICTIONARY_IN_LOG
          • DBA_OB_DATABASE_PRIVILEGE
          • DBA_OB_DATABASES
          • DBA_OB_DEADLOCK_EVENT_HISTORY
          • DBA_OB_DYNAMIC_PARTITION_TABLES
          • DBA_OB_EXTERNAL_TABLE_FILES
          • DBA_OB_FORMAT_OUTLINES
          • DBA_OB_FREEZE_INFO
          • DBA_OB_IMPORT_TABLE_JOB_HISTORY
          • DBA_OB_IMPORT_TABLE_JOBS
          • DBA_OB_IMPORT_TABLE_TASK_HISTORY
          • DBA_OB_IMPORT_TABLE_TASKS
          • DBA_OB_LOG_RESTORE_SOURCE
          • DBA_OB_LS
          • DBA_OB_LS_ARB_REPLICA_TASKS
          • DBA_OB_LS_ARB_REPLICA_TASK_HISTORY
          • DBA_OB_LS_HISTORY
          • DBA_OB_LS_LOCATIONS
          • DBA_OB_LS_LOG_ARCHIVE_PROGRESS
          • DBA_OB_SENSITIVE_COLUMNS
          • DBA_OB_SENSITIVE_RULE_PLAINACCESS_USERS
          • DBA_OB_SENSITIVE_RULES
          • DBA_OB_SERVICES
          • DBA_OB_LS_REPLICA_TASKS
          • DBA_OB_LS_REPLICA_TASK_HISTORY
          • DBA_OB_MAJOR_COMPACTION
          • DBA_OB_OBJECT_BALANCE_WEIGHT
          • DBA_OB_OUTLINE_CONCURRENT_HISTORY
          • DBA_OB_OUTLINES
          • DBA_OB_RECOVER_TABLE_JOB_HISTORY
          • DBA_OB_RECOVER_TABLE_JOBS
          • DBA_OB_RESTORE_HISTORY
          • DBA_OB_RESTORE_PROGRESS
          • DBA_OB_RSRC_IO_DIRECTIVES
          • DBA_OB_RSRC_DIRECTIVES
          • DBA_OB_SPATIAL_COLUMNS
          • oceanbase.DBA_OB_SS_SPACE_USAGE
          • oceanbase.DBA_OB_STORAGE_IO_USAGE
          • DBA_OB_SYNC_STANDBY_DEST
          • DBA_OB_SYS_VARIABLES
          • DBA_OB_SOURCE
          • DBA_OB_TABLE_LOCATIONS
          • DBA_OB_TABLE_OPT_STAT_GATHER_HISTORY
          • DBA_OB_TABLE_STAT_STALE_INFO
          • DBA_OB_TABLEGROUP_PARTITIONS
          • DBA_OB_TABLEGROUP_SUBPARTITIONS
          • DBA_OB_TABLEGROUP_TABLES
          • DBA_OB_TABLEGROUPS
          • DBA_OB_TABLET_REPLICAS
          • DBA_OB_TABLET_TO_LS
          • DBA_OB_TASK_OPT_STAT_GATHER_HISTORY
          • DBA_OB_TENANT_EVENT_HISTORY
          • DBA_OB_TENANT_FLASHBACK_LOG_SCN
          • DBA_OB_TEMP_FILES
          • DBA_OB_TENANTS
          • DBA_OB_TRANSFER_PARTITION_TASKS
          • DBA_PLSQL_TYPES
          • DBA_PLSQL_COLL_TYPES
          • DBA_PLSQL_TYPE_ATTRS
          • DBA_OB_TRANSFER_PARTITION_TASK_HISTORY
          • DBA_OB_TRANSFER_TASK_HISTORY
          • DBA_OB_TRANSFER_TASKS
          • DBA_OB_USER_DEFINED_RULES
          • DBA_OB_ZONE_MAJOR_COMPACTION
          • DBA_OBJ_AUDIT_OPTS
          • DBA_OBJECTS
          • DBA_PART_COL_STATISTICS
          • DBA_PART_HISTOGRAMS
          • DBA_PART_INDEXES
          • DBA_PART_KEY_COLUMNS
          • DBA_PART_TABLES
          • DBA_POLICIES
          • DBA_POLICY_CONTEXTS
          • DBA_POLICY_GROUPS
          • DBA_PROCEDURES
          • DBA_PROFILES
          • DBA_RECYCLEBIN
          • DBA_ROLE_PRIVS
          • DBA_ROLES
          • DBA_RSRC_CONSUMER_GROUPS
          • DBA_RSRC_GROUP_MAPPINGS
          • DBA_RSRC_PLAN_DIRECTIVES
          • DBA_RSRC_PLANS
          • DBA_SCHEDULER_JOB_ARGS
          • DBA_SCHEDULER_JOB_RUN_DETAILS
          • DBA_SCHEDULER_RUNNING_JOBS
          • DBA_SCHEDULER_JOBS
          • DBA_SCHEDULER_PROGRAM
          • DBA_SCHEDULER_PROGRAM_ARGS
          • DBA_SCHEDULER_WINDOWS
          • DBA_SEC_RELEVANT_COLS
          • DBA_SEGMENTS
          • DBA_SEQUENCES
          • DBA_SOURCE
          • DBA_SQL_MANAGEMENT_CONFIG
          • DBA_SQL_PLAN_BASELINES
          • DBA_STMT_AUDIT_OPTS
          • DBA_SUBPART_COL_STATISTICS
          • DBA_SUBPART_HISTOGRAMS
          • DBA_SUBPART_KEY_COLUMNS
          • DBA_SUBPARTITION_TEMPLATES
          • DBA_SYNONYMS
          • DBA_SYS_PRIVS
          • DBA_TAB_COL_STATISTICS
          • DBA_TAB_COLS
          • DBA_TAB_COLUMNS
          • DBA_TAB_COMMENTS
          • DBA_TAB_HISTOGRAMS
          • DBA_TAB_MODIFICATIONS
          • DBA_TAB_PARTITIONS
          • DBA_TAB_PRIVS
          • DBA_TAB_STATISTICS
          • DBA_TAB_STATS_HISTORY
          • DBA_TAB_SUBPARTITIONS
          • DBA_TABLES
          • DBA_TABLESPACES
          • DBA_OB_TABLE_SPACE_USAGE
          • DBA_TRIGGER_ORDERING
          • DBA_TRIGGERS
          • DBA_TYPE_ATTRS
          • DBA_TYPE_METHODS
          • DBA_TYPES
          • DBA_USERS
          • DBA_VIEWS
          • DBA_WR_ACTIVE_SESSION_HISTORY
          • DBA_WR_CONTROL
          • DBA_WR_EVENT_NAME
          • DBA_WR_SNAPSHOT
          • DBA_WR_SQLSTAT
          • DBA_WR_SQLTEXT
          • DBA_WR_STATNAME
          • DBA_WR_SYS_TIME_MODEL
          • DBA_WR_SYSSTAT
          • DBA_WR_SYSTEM_EVENT
          • DBMS_LOCK_ALLOCATED
          • DICT
          • DICTIONARY
          • NLS_DATABASE_PARAMETERS
          • NLS_INSTANCE_PARAMETERS
          • NLS_SESSION_PARAMETERS
          • PROXY_USERS
          • ROLE_ROLE_PRIVS
          • ROLE_SYS_PRIVS
          • ROLE_TAB_PRIVS
          • STMT_AUDIT_OPTION_MAP
          • TENANT_VIRTUAL_GLOBAL_VARIABLE
          • TENANT_VIRTUAL_SESSION_VARIABLE
          • USER_ALL_TABLES
          • USER_ARGUMENTS
          • USER_AUDIT_OBJECT
          • USER_AUDIT_SESSION
          • USER_AUDIT_STATEMENT
          • USER_AUDIT_TRAIL
          • USER_COL_COMMENTS
          • USER_COL_PRIVS
          • USER_COLL_TYPES
          • USER_CONS_COLUMNS
          • USER_CONSTRAINTS
          • USER_DB_LINKS
          • USER_DEPENDENCIES
          • USER_ERRORS
          • USER_IND_COLUMNS
          • USER_IND_EXPRESSIONS
          • USER_IND_PARTITIONS
          • USER_IND_STATISTICS
          • USER_IND_SUBPARTITIONS
          • USER_INDEXES
          • USER_PLSQL_TYPES
          • USER_PLSQL_COLL_TYPES
          • USER_PLSQL_TYPE_ATTRS
          • USER_JOBS
          • USER_MVIEW_LOGS
          • USER_MVIEWS
          • USER_MVREF_CHANGE_STATS
          • USER_MVREF_RUN_STATS
          • USER_MVREF_STATS
          • USER_MVREF_STATS_PARAMS
          • USER_MVREF_STATS_SYS_DEFAULTS
          • USER_MVREF_STMT_STATS
          • USER_OBJECTS
          • USER_OB_SOURCE
          • USER_PART_COL_STATISTICS
          • USER_PART_HISTOGRAMS
          • USER_PART_INDEXES
          • USER_PART_KEY_COLUMNS
          • USER_PART_TABLES
          • USER_POLICIES
          • USER_POLICY_CONTEXTS
          • USER_POLICY_GROUPS
          • USER_PROCEDURES
          • USER_PROFILES
          • USER_RECYCLEBIN
          • USER_ROLE_PRIVS
          • USER_SCHEDULER_JOB_ARGS
          • USER_SCHEDULER_PROGRAM_ARGS
          • USER_SEC_RELEVANT_COLS
          • USER_SEGMENTS
          • USER_SEQUENCES
          • USER_SOURCE
          • USER_SUBPART_COL_STATISTICS
          • USER_SUBPART_HISTOGRAMS
          • USER_SUBPART_KEY_COLUMNS
          • USER_SUBPARTITION_TEMPLATES
          • USER_SYNONYMS
          • USER_SYS_PRIVS
          • USER_TAB_COL_STATISTICS
          • USER_TAB_COLS
          • USER_TAB_COLUMNS
          • USER_TAB_COMMENTS
          • USER_TAB_HISTOGRAMS
          • USER_TAB_MODIFICATIONS
          • USER_TAB_PARTITIONS
          • USER_TAB_PRIVS
          • USER_TAB_STATISTICS
          • USER_TAB_STATS_HISTORY
          • USER_TAB_SUBPARTITIONS
          • USER_TABLES
          • USER_TABLESPACES
          • USER_TRIGGER_ORDERING
          • USER_TRIGGERS
          • USER_TYPE_ATTRS
          • USER_TYPE_METHODS
          • USER_TYPES
          • USER_USERS
          • USER_VIEWS
        • Performance views
          • GV$ACTIVE_SESSION_HISTORY
          • GV$DBLINK
          • GV$DML_STATS
          • GV$GLOBAL_TRANSACTION
          • GV$INSTANCE
          • GV$OB_ACTIVE_SESSION_HISTORY
          • GV$OB_ARBITRATION_MEMBER_INFO
          • GV$OB_COMPACTION_DIAGNOSE_INFO
          • GV$OB_COMPACTION_PROGRESS
          • GV$OB_COMPACTION_SUGGESTIONS
          • GV$OB_CGROUP_CONFIG
          • GV$OB_DTL_INTERM_RESULT_MONITOR
          • GV$OB_FLT_TRACE_CONFIG
          • GV$OB_FUNCTION_IO_STAT
          • GV$OB_GLOBAL_TRANSACTION
          • GV$OB_GROUP_IO_STAT
          • GV$OB_HMS_CLIENT_POOL_STAT
          • GV$OB_KVCACHE
          • GV$OB_LOG_STAT
          • GV$OB_LOG_TRANSPORT_DEST_STAT
          • GV$OB_LS_SNAPSHOTS
          • GV$OB_MEMORY
          • GV$OB_MEMSTORE
          • GV$OB_MEMSTORE_INFO
          • GV$OB_NIC_INFO
          • GV$OB_OPT_STAT_GATHER_MONITOR
          • GV$OB_PARAMETERS
          • GV$OB_PLAN_CACHE_PLAN_EXPLAIN
          • GV$OB_PL_CACHE_OBJECT
          • GV$OB_PLAN_CACHE_PLAN_STAT
          • GV$OB_PLAN_CACHE_STAT
          • GV$OB_PROCESSLIST
          • GV$OB_PS_ITEM_INFO
          • GV$OB_PS_STAT
          • GV$OB_PX_P2P_DATAHUB
          • GV$OB_PX_TARGET_MONITOR
          • GV$OB_PX_WORKER_STAT
          • GV$OB_QUERY_RESPONSE_TIME_HISTOGRAM
          • GV$OB_RES_MGR_SYSSTAT
          • GV$OB_SERVER_SCHEMA_INFO
          • GV$OB_SESS_TIME_MODEL
          • GV$OB_SESSION
          • GV$OB_SHARED_STORAGE_QUOTA
          • GV$OB_SQL_AUDIT
          • GV$OB_SQL_CCL_STATUS
          • GV$SQL_JOIN_FILTER
          • GV$OB_SQL_PLAN
          • GV$OB_SQL_WORKAREA_MEMORY_INFO
          • GV$OB_SQLSTAT
          • GV$OB_SSTABLES
          • GV$OB_SS_LOCAL_CACHE
          • GV$OB_SYS_TIME_MODEL
          • GV$OB_TABLET_COMPACTION_HISTORY
          • GV$OB_TABLET_COMPACTION_PROGRESS
          • GV$OB_TENANT_MEMORY
          • GV$OB_TENANT_RESOURCE_LIMIT
          • GV$OB_TENANT_RESOURCE_LIMIT_DETAIL
          • GV$OB_TRANSACTION_PARTICIPANTS
          • GV$OB_TRANSACTION_SCHEDULERS
          • GV$OB_UNITS
          • GV$OB_RESULT_CACHE_OBJECTS
          • GV$OPEN_CURSOR
          • GV$SESSION_WAIT
          • GV$SESSION_WAIT_HISTORY
          • GV$SESSTAT
          • GV$SQL_PLAN_MONITOR
          • GV$SQL_WORKAREA
          • GV$SQL_WORKAREA_ACTIVE
          • GV$SQL_WORKAREA_HISTOGRAM
          • GV$SYSSTAT
          • GV$SYSTEM_EVENT
          • GV$OB_ARBITRATION_SERVICE_STATUS
          • GV$OB_LOCKS
          • GV$OB_THREAD
          • V$ACTIVE_SESSION_HISTORY
          • V$DBLINK
          • V$DML_STATS
          • V$OB_ENCRYPTED_TABLES
          • V$ENCRYPTED_TABLESPACES
          • V$EVENT_NAME
          • V$GLOBAL_TRANSACTION
          • V$GLOBALCONTEXT
          • V$INSTANCE
          • V$OB_MEMORY
          • V$OB_MEMSTORE
          • V$NLS_PARAMETERS
          • V$OB_ACTIVE_SESSION_HISTORY
          • V$OB_ARBITRATION_MEMBER_INFO
          • V$OB_ARCHIVE_DEST_STATUS
          • V$OB_COMPACTION_DIAGNOSE_INFO
          • V$OB_COMPACTION_PROGRESS
          • V$OB_COMPACTION_SUGGESTIONS
          • V$OB_CGROUP_CONFIG
          • V$OB_DTL_INTERM_RESULT_MONITOR
          • V$OB_DYNAMIC_PARTITION_TABLES
          • V$OB_FUNCTION_IO_STAT
          • V$OB_GLOBAL_TRANSACTION
          • V$OB_GROUP_IO_STAT
          • V$OB_HMS_CLIENT_POOL_STAT
          • V$OB_KVCACHE
          • V$OB_LOG_STAT
          • V$OB_LOG_TRANSPORT_DEST_STAT
          • V$OB_LS_LOG_RESTORE_STATUS
          • V$OB_LS_SNAPSHOTS
          • V$OB_MEMSTORE_INFO
          • V$OB_NIC_INFO
          • V$OB_OPT_STAT_GATHER_MONITOR
          • V$OB_PARAMETERS
          • V$OB_PL_CACHE_OBJECT
          • V$OB_PROCESSLIST
          • V$OB_PX_P2P_DATAHUB
          • V$OB_PX_TARGET_MONITOR
          • V$OB_PX_WORKER_STAT
          • V$OB_QUERY_RESPONSE_TIME_HISTOGRAM
          • V$OB_RES_MGR_SYSSTAT
          • V$OB_RESULT_CACHE_OBJECTS
          • V$OB_SERVER_SCHEMA_INFO
          • V$OB_SESS_TIME_MODEL
          • V$OB_SESSION
          • V$OB_SHARED_STORAGE_QUOTA
          • V$OB_SQL_PLAN
          • V$OB_SQL_WORKAREA_MEMORY_INFO
          • V$OB_SQLSTAT
          • V$OB_SS_LOCAL_CACHE
          • V$OB_SYS_TIME_MODEL
          • V$OB_TABLET_COMPACTION_HISTORY
          • V$OB_TABLET_COMPACTION_PROGRESS
          • V$OB_TENANT_RESOURCE_LIMIT
          • V$OB_TENANT_RESOURCE_LIMIT_DETAIL
          • V$OB_TIMESTAMP_SERVICE
          • V$OB_TRANSACTION_PARTICIPANTS
          • V$OB_TRANSACTION_SCHEDULERS
          • V$OB_UNITS
          • V$OPEN_CURSOR
          • V$OB_PLAN_CACHE_PLAN_EXPLAIN
          • V$OB_PLAN_CACHE_PLAN_STAT
          • V$OB_PLAN_CACHE_STAT
          • V$OB_PS_ITEM_INFO
          • V$OB_PS_STAT
          • V$RSRC_PLAN
          • V$SESSION_WAIT
          • V$SESSION_WAIT_HISTORY
          • V$SESSTAT
          • V$OB_SQL_AUDIT
          • V$OB_SQL_CCL_STATUS
          • V$SQL_JOIN_FILTER
          • V$SQL_MONITOR_STATNAME
          • V$SQL_PLAN_MONITOR
          • V$SQL_WORKAREA
          • V$SQL_WORKAREA_ACTIVE
          • V$SQL_WORKAREA_HISTOGRAM
          • V$OB_SS_SSTABLES
          • V$OB_SSTABLES
          • V$RESTORE_POINT
          • V$STATNAME
          • V$SYSSTAT
          • V$SYSTEM_EVENT
          • V$OB_TENANT_MEMORY
          • V$TIMEZONE_NAMES
          • V$VERSION
          • V$OB_ARBITRATION_SERVICE_STATUS
          • V$OB_LOCKS
          • V$OB_LS_REPLICA_TASK_PLAN
          • V$OB_THREAD
      • Overview of metrics
      • General wait events
    • Parameters and system variables
      • Overview
      • Changes to configuration parameters and system variables in V3.x and V4.x
      • Parameters
        • Overview
        • Cluster-level parameters
          • alert_log_level
          • all_cluster_list
          • all_server_list
          • arbitration_degradation_policy
          • auto_broadcast_location_cache_rate_limit
          • auto_leader_switch_interval
          • auto_refresh_location_cache_rate_limit
          • autoinc_cache_refresh_interval
          • async_ps_cursor_max_count
          • backup_backup_dest
          • backup_backup_dest_option
          • backup_concurrency
          • backup_dest
          • backup_dest_option
          • backup_log_archive_option
          • backup_net_limit
          • backup_recovery_window
          • backup_region
          • backup_zone
          • balance_blacklist_failure_threshold
          • balance_blacklist_retry_interval
          • balancer_emergency_percentage
          • balancer_log_interval
          • balancer_task_timeout
          • balancer_timeout_check_interval
          • balancer_tolerance_percentage
          • bf_cache_miss_count_threshold
          • bf_cache_priority
          • builtin_db_data_verify_cycle
          • cache_wash_threshold
          • clog_cache_priority
          • clog_disk_usage_limit_percentage
          • clog_disk_utilization_threshold
          • clog_expire_days
          • clog_io_isolation_mode
          • clog_sync_time_warn_threshold
          • clog_transport_compress_func
          • cluster
          • cluster_id
          • config_additional_dir
          • cpu_count
          • cpu_reserved
          • data_copy_concurrency
          • data_dir
          • data_disk_usage_limit_percentage
          • data_disk_write_limit_percentage
          • data_storage_error_tolerance_time
          • data_storage_warning_tolerance_time
          • datafile_disk_percentage
          • datafile_maxsize
          • datafile_next
          • datafile_size
          • dead_socket_detection_timeout
          • debug_sync_timeout
          • default_compress
          • default_compress_func
          • default_row_format
          • default_transport_compress_func
          • devname
          • diag_syslog_per_error_limit
          • disk_io_thread_count
          • dtl_buffer_size
          • election_blacklist_interval
          • election_cpu_quota
          • enable_asan_for_memory_context
          • enable_async_syslog
          • enable_auto_leader_switch
          • enable_auto_refresh_location_cache
          • enable_cgroup
          • enable_dblink
          • enable_ddl
          • enable_election_group
          • enable_global_background_resource_isolation
          • enable_global_freeze_trigger
          • enable_log_archive
          • enable_logservice
          • enable_major_freeze
          • enable_manual_merge
          • enable_merge_by_turn
          • enable_ob_esi_process
          • enable_ob_ratelimit
          • enable_one_phase_commit
          • enable_perf_event
          • enable_pg
          • enable_record_trace_id
          • enable_record_trace_log
          • enable_rereplication
          • enable_rich_error_msg
          • enable_rootservice_standalone
          • enable_rpc_authentication_bypass
          • enable_separate_sys_clog
          • enable_smooth_leader_switch
          • enable_sql_audit
          • enable_sql_operator_dump
          • enable_sys_table_ddl
          • enable_sys_unit_standalone
          • enable_syslog_recycle
          • enable_syslog_wf
          • enable_tcp_keepalive
          • enable_upgrade_mode
          • external_table_disk_cache_max_percentage
          • fast_recovery_concurrency
          • flush_log_at_trx_commit
          • fuse_row_cache_priority
          • gc_wait_archive
          • get_leader_candidate_rpc_timeout
          • global_background_cpu_quota
          • global_index_build_single_replica_timeout
          • global_major_freeze_residual_memory
          • global_write_halt_residual_memory
          • high_priority_net_thread_count
          • ignore_replay_checksum_error
          • ignore_replica_checksum_error
          • ilog_index_expire_time
          • index_block_cache_priority
          • index_cache_priority
          • index_clog_cache_priority
          • index_info_block_cache_priority
          • internal_sql_execute_timeout
          • large_query_threshold
          • large_query_worker_percentage
          • leak_mod_to_check
          • lease_time
          • local_ip
          • location_cache_cpu_quota
          • location_cache_expire_time
          • location_cache_priority
          • location_cache_refresh_min_interval
          • location_cache_refresh_rpc_timeout
          • location_cache_refresh_sql_timeout
          • location_fetch_concurrency
          • location_refresh_thread_count
          • log_archive_batch_buffer_limit
          • log_archive_checkpoint_interval
          • log_disk_percentage
          • log_disk_size
          • logservice_access_point
          • log_storage_warning_trigger_percentage
          • log_storage_warning_tolerance_time
          • ls_meta_table_check_interval
          • max_kept_major_version_number
          • max_px_worker_count
          • max_string_print_length
          • max_syslog_file_count
          • memory_chunk_cache_size
          • memory_limit
          • memory_limit_percentage
          • memory_reserved
          • memstore_limit_percentage
          • merge_stat_sampling_ratio
          • merge_thread_count
          • merger_completion_percentage
          • merger_switch_leader_duration_time
          • merger_warm_up_duration_time
          • micro_block_merge_verify_level
          • migrate_concurrency
          • migration_disable_time
          • min_observer_version
          • minor_deferred_gc_time
          • minor_freeze_times
          • minor_merge_concurrency
          • minor_warm_up_duration_time
          • multiblock_read_gap_size
          • multiblock_read_size
          • mysql_port
          • net_thread_count
          • ob_esi_io_concurrency
          • ob_esi_max_syslog_file_count
          • ob_esi_memory_limit
          • ob_esi_rpc_port
          • ob_esi_session_timeout
          • ob_esi_syslog_level
          • ob_event_history_recycle_interval
          • ob_ratelimit_stat_period
          • ob_startup_mode
          • ob_python_home
          • obconfig_url
          • observer_id
          • ob_storage_s3_url_encode_type
          • ob_enable_java_env
          • ob_java_home
          • ob_java_connector_path
          • ob_java_opts
          • ob_enable_utl_http
          • ofs_list
          • opt_tab_stat_cache_priority
          • partition_table_check_interval
          • plan_cache_evict_interval
          • plan_cache_high_watermark
          • plan_cache_low_watermark
          • px_task_size
          • px_workers_per_cpu_quota
          • rebuild_replica_data_lag_threshold
          • recyclebin_object_expire_time
          • replica_safe_remove_time
          • resource_hard_limit
          • resource_soft_limit
          • restore_concurrency
          • rootservice_async_task_queue_size
          • rootservice_async_task_thread_count
          • rootservice_list
          • rootservice_memory_limit
          • rootservice_ready_check_interval
          • row_compaction_update_limit
          • row_purge_thread_count
          • rpc_client_authentication_method
          • rpc_port
          • rpc_server_authentication_method
          • rpc_timeout
          • schema_history_expire_time
          • schema_history_recycle_interval
          • server_balance_cpu_mem_tolerance_percent
          • server_balance_critical_disk_waterlevel
          • server_balance_disk_tolerance_percent
          • server_check_interval
          • server_cpu_quota_max
          • server_cpu_quota_min
          • server_data_copy_in_concurrency
          • server_data_copy_out_concurrency
          • server_permanent_offline_time
          • sql_audit_memory_limit
          • sql_login_thread_count
          • sql_net_thread_count
          • sql_protocol_min_tls_version
          • ssl_client_authentication
          • ssl_external_kms_info
          • stack_size
          • standby_fetch_log_bandwidth_limit
          • storage_meta_cache_priority
          • strict_check_os_params
          • switchover_process_thread_count
          • sync_io_thread_count
          • sys_bkgd_io_high_percentage
          • sys_bkgd_io_low_percentage
          • sys_bkgd_migration_change_member_list_timeout
          • sys_bkgd_migration_retry_num
          • sys_bkgd_net_percentage
          • sys_cpu_limit_trigger
          • syslog_compress_func
          • syslog_disk_size
          • syslog_file_uncompressed_count
          • syslog_io_bandwidth_limit
          • syslog_level
          • syslog_sync_size_threshold
          • system_cpu_quota
          • system_memory
          • system_trace_level
          • tableapi_transport_compress_func
          • tablet_ls_cache_priority
          • tablet_meta_table_check_interval
          • tablet_meta_table_scan_batch_count
          • tablet_size
          • tcp_keepcnt
          • tcp_keepidle
          • tcp_keepintvl
          • tenant_cpu_variation_per_server
          • tenant_groups
          • tenant_task_queue_size
          • token_reserved_percentage
          • trace_log_sampling_interval
          • trace_log_slow_query_watermark
          • trx_2pc_retry_interval
          • trx_force_kill_threshold
          • trx_try_wait_lock_timeout
          • unit_balance_resource_weight
          • unit_gc_wait_time
          • use_large_pages
          • user_block_cache_priority
          • user_iort_up_percentage
          • user_row_cache_priority
          • user_tab_col_stat_cache_priority
          • virtual_table_location_cache_expire_time
          • wait_leader_batch_count
          • weak_read_version_refresh_interval
          • workers_per_cpu_quota
          • zone
          • zone_merge_concurrency
          • zone_merge_order
          • zone_merge_timeout
        • Tenant-level parameters
          • arbitration_timeout
          • archive_lag_target
          • approx_count_distinct_precision
          • audit_log_buffer_size
          • audit_log_compression
          • attach_shared_sstable_thread_score
          • audit_log_enable
          • audit_log_format
          • audit_log_max_size
          • audit_log_path
          • audit_log_prune_seconds
          • audit_log_query_sql
          • audit_log_rotate_on_size
          • audit_log_strategy
          • audit_sys_operations
          • audit_trail
          • auto_split_tablet_size
          • backup_data_file_size
          • balancer_idle_time
          • choose_migration_source_policy
          • clog_max_unconfirmed_log_count
          • clog_persistence_compress_func
          • compaction_dag_cnt_limit
          • compaction_high_thread_score
          • compaction_low_thread_score
          • compaction_mid_thread_score
          • compaction_schedule_tablet_batch_cnt
          • compatible
          • connection_control_failed_connections_threshold
          • connection_control_max_connection_delay
          • connection_control_min_connection_delay
          • cpu_quota_concurrency
          • ddl_thread_score
          • default_auto_increment_mode
          • default_enable_extended_rowid
          • default_load_mode
          • default_micro_block_format_version
          • default_progressive_merge_num
          • default_skip_index_level
          • default_storage_cache_policy
          • default_table_merge_engine
          • default_table_organization
          • default_table_store_format
          • direct_load_allow_fallback
          • dump_data_dictionary_to_log_interval
          • enable_adaptive_plan_cache
          • enable_auto_split
          • enable_clog_encryption
          • enable_clog_persistence_compress
          • enable_database_sharding_none
          • enable_early_lock_release
          • enable_pl_rich_error_msg
          • enable_gts_standalone
          • enable_kv_group_commit
          • enable_kv_ttl
          • enable_lock_priority
          • enable_manual_storage_cache_policy
          • enable_mlog_auto_maintenance
          • enable_monotonic_weak_read
          • enable_mv_binlog_minimal_mode
          • enable_ls_leader_balance
          • enable_rebalance
          • enable_sql_extension
          • enable_transfer
          • enable_user_defined_rewrite_rules
          • external_kms_info
          • external_table_io_hole_size
          • external_table_io_range_size
          • freeze_trigger_percentage
          • global_index_auto_split_policy
          • ha_high_thread_score
          • ha_low_thread_score
          • ha_mid_thread_score
          • inc_sstable_upload_thread_score
          • io_category_config
          • job_queue_processes
          • json_document_max_depth
          • kv_ttl_duty_duration
          • kv_group_commit_batch_size
          • kv_group_commit_rw_mode
          • kv_hbase_client_scanner_timeout_period
          • kv_ttl_history_recycle_interval
          • load_data_diagnosis_log_compression
          • load_data_diagnosis_log_max_size
          • load_vector_index_on_follower
          • lob_enable_block_cache_threshold
          • log_archive_concurrency
          • log_disk_throttling_maximum_duration
          • log_disk_throttling_percentage
          • log_disk_utilization_limit_threshold
          • log_disk_utilization_threshold
          • log_restore_concurrency
          • log_storage_compress_all
          • log_storage_compress_func
          • log_transport_compress_all
          • log_transport_compress_func
          • ls_gc_delay_time
          • ls_scale_out_factor
          • major_compact_trigger
          • major_freeze_duty_time
          • max_partition_num
          • max_stale_time_for_weak_consistency
          • mds_compaction_high_thread_score
          • mds_compaction_mid_thread_score
          • mds_minor_compact_trigger
          • merger_check_interval
          • minor_compact_trigger
          • mlog_trim_interval
          • ob_compaction_schedule_interval
          • ob_enable_batched_multi_statement
          • ob_encoding_granularity
          • ob_enable_java_udf
          • ob_enable_python_udf
          • ob_proxy_readonly_transaction_routing_policy
          • ob_query_switch_leader_retry_timeout
          • ob_ssl_invited_common_names
          • ob_vector_memory_limit_percentage
          • open_cursors
          • optimizer_index_cost_adj
          • partition_balance_schedule_interval
          • plsql_code_type
          • plsql_debug
          • plsql_optimize_level
          • plsql_v2_compatibility
          • px_node_policy
          • package_state_sync_max_size
          • query_memory_limit_percentage
          • query_response_time_flush
          • query_response_time_range_base
          • query_response_time_stats
          • range_optimizer_max_mem_size
          • recover_table_concurrency
          • recover_table_dop
          • replica_parallel_migration_mode
          • result_cache_max_size
          • result_cache_max_result
          • ob_result_cache_evict_percentage
          • ob_deterministic_udf_cache_max_size
          • rpc_memory_limit_percentage
          • shared_log_retention
          • spill_compression_codec
          • sql_work_area
          • standby_db_fetch_log_rpc_timeout
          • standby_db_preferred_upstream_log_region
          • sts_credential
          • tde_method
          • tenant_sql_login_thread_count
          • tenant_sql_net_thread_count
          • temporary_file_max_disk_size
          • storage_rowsets_size
          • suspend_storage_cache_task
          • ttl_thread_score
          • undo_retention
          • vector_index_memory_saving_mode
          • vector_index_optimize_duty_time
          • workarea_size_policy
          • writing_throttling_maximum_duration
          • writing_throttling_trigger_percentage
          • zone_deploy_mode
      • System variables
        • Overview
        • Global variables
          • activate_all_roles_on_login
          • auto_increment_cache_size
          • auto_increment_increment
          • auto_increment_offset
          • autocommit
          • automatic_sp_privileges
          • binlog_row_image
          • block_encryption_mode
          • character_set_client
          • character_set_connection
          • cardinality_estimation_model
          • character_set_database
          • character_set_filesystem
          • character_set_results
          • character_set_server
          • character_set_system
          • collation_connection
          • collation_database
          • collation_server
          • connect_timeout
          • cte_max_recursion_depth
          • cursor_sharing
          • datadir
          • default_password_lifetime
          • default_storage_engine
          • div_precision_increment
          • error_on_overlap_time
          • event_scheduler
          • explicit_defaults_for_timestamp
          • ENABLE_OPTIMIZER_ROWGOAL
          • foreign_key_checks
          • group_concat_max_len
          • identity
          • init_connect
          • innodb_stats_persistent
          • innodb_strict_mode
          • interactive_timeout
          • json_float_full_precision
          • license
          • lc_time_names
          • log_row_value_options
          • long_query_time
          • lower_case_table_names
          • max_allowed_packet
          • max_connections
          • max_sp_recursion_depth
          • max_user_connections
          • mview_refresh_dop
          • net_buffer_length
          • net_read_timeout
          • net_write_timeout
          • nls_calendar
          • nls_characterset
          • nls_comp
          • nls_currency
          • nls_date_format
          • nls_date_language
          • nls_dual_currency
          • nls_iso_currency
          • nls_length_semantics
          • nls_nchar_characterset
          • nls_nchar_conv_excp
          • nls_numeric_characters
          • nls_sort
          • nls_territory
          • nls_timestamp_format
          • nls_timestamp_tz_format
          • ob_bnl_join_cache_size
          • ob_compatibility_mode
          • ob_compatibility_control
          • ob_compatibility_version
          • ob_create_table_strict_mode
          • ob_default_lob_inrow_threshold
          • ob_default_replica_num
          • ob_early_lock_release
          • ob_enable_ps_parameter_anonymous_block
          • ob_enable_pl_async_commit
          • ob_enable_aggregation_pushdown
          • ob_enable_blk_nestedloop_join
          • ob_enable_hash_group_by
          • ob_enable_index_direct_select
          • ob_enable_jit
          • ob_enable_pl_cache
          • ob_enable_plan_cache
          • ob_enable_rich_error_msg
          • ob_enable_sql_audit
          • ob_enable_transformation
          • ob_enable_transmission_checksum
          • ob_enable_truncate_flashback
          • ob_global_debug_sync
          • ob_log_level
          • ob_max_read_stale_time
          • ob_pl_block_timeout
          • ob_plan_cache_evict_high_percentage
          • ob_plan_cache_evict_low_percentage
          • ob_plan_cache_percentage
          • ob_proxy_global_variables_version
          • ob_query_timeout
          • ob_read_consistency
          • ob_reserved_meta_memory_percentage
          • ob_route_policy
          • ob_sql_audit_percentage
          • ob_sql_work_area_percentage
          • ob_table_access_policy
          • ob_tcp_invited_nodes
          • ob_temp_tablespace_size_percentage
          • ob_timestamp_service
          • ob_trx_idle_timeout
          • ob_trx_lock_timeout
          • ob_trx_timeout
          • optimizer_capture_sql_plan_baselines
          • ob_security_version
          • optimizer_dynamic_sampling
          • optimizer_features_enable
          • optimizer_use_sql_plan_baselines
          • parallel_degree_limit
          • parallel_degree_policy
          • parallel_max_servers
          • parallel_min_scan_time_threshold
          • parallel_servers_target
          • performance_schema
          • plugin_dir
          • plsql_ccflags
          • pid_file
          • query_cache_size
          • plsql_optimize_level
          • plsql_can_transform_sql_to_assign
          • port
          • query_cache_type
          • query_rewrite_enabled
          • query_rewrite_integrity
          • read_only
          • recyclebin
          • regexp_stack_limit
          • regexp_time_limit
          • resource_manager_plan
          • socket
          • runtime_bloom_filter_max_size
          • runtime_filter_max_in_num
          • runtime_filter_type
          • runtime_filter_wait_time_ms
          • secure_file_priv
          • server_uuid
          • sql_auto_is_null
          • sql_mode
          • sql_quote_show_create
          • sql_safe_updates
          • sql_select_limit
          • sql_throttle_current_priority
          • sql_throttle_network
          • sql_throttle_priority
          • sql_throttle_rt
          • SQL_TRANSPILER
          • sql_warnings
          • system_time_zone
          • time_zone
          • transaction_isolation
          • transaction_read_only
          • tx_isolation
          • tx_read_only
          • validate_password_check_user_name
          • validate_password_length
          • validate_password_mixed_case_count
          • validate_password_number_count
          • validate_password_policy
          • validate_password_special_char_count
          • version
          • version_comment
          • wait_timeout
        • Session-level variables
          • enable_sql_plan_monitor
          • is_result_accurate
          • last_insert_id
          • nls_language
          • ob_capability_flag
          • ob_enable_show_trace
          • ob_hnsw_ef_search
          • ob_ivf_nprobes
          • ob_last_schema_version
          • ob_org_cluster_id
          • ob_sparse_drop_ratio_search
          • ob_proxy_partition_hit
          • ob_proxy_set_trx_executed
          • ob_trace_info
          • timestamp
          • tracefile_identifier
    • Error codes
      • MySQL-compatible mode
        • Overview
        • 0001 to 3999
        • 4000 ~ 4499
        • 4500 to 4999
        • 5000 to 5999
        • 6000 to 6999
        • 7000 to 7999
        • 8000 to 8999
        • 9000 ~ 9499
        • 9500 to 9999
        • 10000 ~ 12000
        • 22998, 30926, 38104, and 38105
      • Oracle-compatible mode
        • Overview
        • OBE-00000 ~ OBE-00999
        • OBE-01000 to OBE-01499
        • OBE-01500 to OBE-01999
        • OBE-02000 to OBE-04999
        • OBE-05000 to OBE-10000
        • OBE-10000 ~ OBE-19999
        • OBE-20000 to OBE-29999
        • OBE-30000 to OBE-49999
        • OBE-50000 to OBE-99999
        • PLS-00000 to PLS-00999
    • Performance tuning
      • Overview
      • Performance related tools
        • System tools
          • Top general tool
          • CPU tools
          • Memory tools
          • Disk I/O tools
          • Network tools
        • Internal tables
          • GV$SYSSTAT
          • GV$OB_SQL_AUDIT
          • GV$OB_TRANSACTION_PARTICIPANTS
        • Logs
          • slow trans
          • dump tenant info
          • Trace logs
        • OCP
      • System tuning
        • OS parameter tuning
        • Database parameter tuning
          • CPU-related parameters
          • I/O-related parameters
          • Memory-related parameters
          • Network transmission related parameters
        • ODP parameter tuning
          • CPU parameters
          • Network transmission related parameters
          • Routing parameters on nodes
      • Business model tuning
        • Load balancing
        • SQL diagnostics
        • Distributed transactions
      • Performance diagnosis
        • Cluster performance diagnosis
        • Diagnose tenant performance
        • Monitor ODP performance
        • Monitor host performance
        • WR management
          • Overview
          • Manage WR
          • Monitor historical session performance
          • Clean up WR data
        • ASH report
          • ASH
          • Generate an ASH report
          • Analyze an ASH report
          • ASH best practices
      • SQL tuning
        • Execution process of SQL queries
        • SQL execution plans
          • Introduction to SQL execution plans
          • Fast parameterization
          • Execution plan cache
          • Execution plan operators
            • TABLE SCAN
            • JOIN
            • COUNT
            • GROUP BY
            • WINDOW FUNCTION
            • SUBPLAN FILTER
            • DISTINCT
            • SEQUENCE
            • MATERIAL
            • SORT
            • LIMIT
            • FOR UPDATE
            • SELECT INTO
            • SUBPLAN SCAN
            • UNION
            • INTERSECT
            • EXCEPT/MINUS
            • INSERT
            • DELETE
            • UPDATE
            • MERGE
            • EXCHANGE
            • GI
          • Display execution plans in real time
          • SQL optimization practice with EXPLAIN
        • Distributed execution plans
          • Perform distributed execution and parallel queries
          • Generate a distributed plan
          • Schedule distributed execution plans
          • Manage distributed execution plans
          • Parallel execution enabling methods and their priority
          • Auto DOP
          • Execute parallel queries
          • Perform parameter tuning for a parallel query
          • Parallel DML
          • Parallel DDL
        • Parallel execution plans
          • Introduction to parallel execution
          • Classification and optimization of parallel execution
          • Set concurrent execution
            • Concurrency control and queuing
            • Set a DOP for parallel execution
            • Set parallel execution parameters
          • Parallel execution diagnostics
          • Parallel execution tuning tips
          • Quick start
        • SQL tuning
          • Overview of SQL tuning
          • General procedure
          • SQL execution performance monitoring
            • GV$OB_SQL_AUDIT
            • SQL Trace
            • Plan cache views
            • SQL performance analysis example
              • Use SQL Audit to analyze wait events in a query
              • Analyze SQL queries that cause an abrupt RT jitter
              • View and analyze the shape of an execution plan
              • Analyze slow SQL queries
              • Query SQL traffic distribution and QPS
              • Check whether SQL queries are balanced across servers in a cluster
              • Find the TOP N SQL queries
              • Analyze whether an unusually large number of remote execution requests exist in the system or the execution of an SQL statement
              • Find full table scan SQL statements in a tenant
              • Find the TOP N queries with the longest execution time within a certain period
              • Analyze queries related to distributed plans
              • Check whether the RPC execution count of a distributed subplan is balanced across servers in a cluster
          • Optimizer statistics
            • Overview of statistics
            • Statistics collection methods
              • Overview
              • Histograms
              • Manually collect statistics
              • Automatic statistics collection
              • Online statistics collection
              • Dynamic sampling
            • Statistics management
              • Overview
              • Delete statistics
              • Set statistics
              • Import and export statistics
              • Lock and unlock statistics
              • Manage statistics history
              • Manage statistics preferences
            • Collection and update strategy for partitioned table statistics
            • Monitoring and diagnostics for statistics collection
            • OceanBase statistics management practical guide
          • Query rewrite
            • Overview
            • Rule-based query rewrite
            • Cost-based query rewrite
          • Query optimization
            • Access path
              • Overview
              • Rule-based path selection
              • Cost-based path selection
            • Join algorithm
              • Overview
              • Join algorithms
              • Runtime filter
              • Join order
          • Manage execution plans
            • Optimizer hints
            • Plan binding
            • SQL execution plan management (SPM)
        • Glossary
        • General issues in SQL tuning
    • Database proxy
      • OceanBase Database Proxy
      • Connection and routing
      • ODP
        • Overview
        • Manage ODP clusters
          • Create an ODP cluster
          • Manage ODP cluster parameters
          • Delete an ODP cluster
          • Upgrade all ODPs in an ODP cluster
          • Restart all ODPs in an ODP cluster
          • Manage OceanBase clusters connected to an ODP cluster
          • Monitor ODP cluster performance
        • Manage ODP
          • Add an ODP
          • Start an ODP
          • Refresh ODP configurations
          • Stop an ODP
          • Restart an ODP
          • Delete an ODP
          • Upgrade one or more ODPs
        • ODP startup parameters
      • Physical connections
      • Logical connection
        • Query all sessions
        • Query the details of a session
        • Query the metrics of a session
        • Query session variables
        • Terminate a server session
      • Route management
        • Table-based routing of ODP
        • LDC-based routing
        • ODP routing policy
          • Read/Write splitting
          • Follower-first read
          • Blocklist mechanism
          • Transaction routing
      • View tenant sessions
      • Terminate a tenant session
      • Set the maximum number of connections for a tenant
    • Drivers
      • ECOB
      • OBCI
      • OceanBase Connector/J
      • OceanBase Connector/C
      • OceanBase Connector/ODBC
    • Platforms
      • OMA
      • OMS
      • OCP
      • ODC
      • OAT
    • Components & tools
      • O&M management
        • obshell
          • Use cases
            • obshell management
              • Start or stop obshell
              • Upgrade obshell
            • cluster management
              • Deploy an OceanBase cluster
              • Deploy ODP
              • Take over an OceanBase cluster not deployed by obshell
              • Start an OceanBase cluster
              • Stop an OceanBase cluster
              • Use obshell to scale out an OceanBase cluster
              • Upgrade an OceanBase cluster
              • Initiate a cluster-level backup
              • Replace a faulty node
            • Tenant management
              • Create a tenant
              • Initiate a tenant-level backup
              • Initiate tenant-level restore
              • Expand a tenant
            • Configure an OBServer node to start automatically on boot
          • obshell commands
            • Agent commands of obshell
            • Cluster commands of obshell
            • obshell unit commands
            • obshell resource pool commands
            • Tenant command group of obshell
            • Task commands of obshell
            • Backup commands in obshell
            • obshell restore command group
            • obshell recyclebin command group
          • obshell Dashboard
            • obshell Dashboard
            • Cluster information
            • Cluster Management
            • Tenant management
              • Overview of tenant management
              • Overview
              • Database Management
              • User Management
              • Backup and restore
                • Overview of Backup and Restore
                • Immediately backup
                • Initiate restore
            • Performance Monitoring
            • Alarm center
              • Overview
              • View alert events
              • Managing Alert Suppression
            • Parameter management
            • Package management
            • Task Management
          • API references
            • obshell API requests
            • Hybrid encryption for API operations
            • obshell management
              • AgentUpgradeCheck
              • UpgradeAgent
              • Set node password
              • QueryNodeStatus
            • cluster management
              • Add a node before cluster initialization
              • DeleteNodeBeforeClusterInitialization
              • SetClusterConfig
              • SetServerConfig
              • Initialize Cluster
              • StartCluster
              • StopCluster
              • ObUpgradeCheck
              • Upgrade OceanBase Database
              • Scale out a cluster
              • Cluster shrink
              • GetObInfo
              • Delete a Zone
            • ODP management
              • Deploy ODP
              • Start ODP
              • Stop ODP
              • Upload an ODP installation package
              • Upgrade ODP
              • Destroy ODP
            • Unit config management
              • Create a resource specification
              • Retrieve all resource specifications
              • Query the information of a specified resource specification
              • Delete a resource specification
            • Resource pool management
              • Get information about all resource pools
              • Delete a specified resource pool
            • Tenant management
              • Create a tenant
              • Query tenant information
              • Change the tenant password
              • Modify the access whitelist of a tenant
              • Modify the primary zone of a tenant
              • Modify tenant system variables
              • Modify tenant configurations
              • Rename a tenant
              • Create a user
              • Delete a user
              • Delete a tenant
              • Add a tenant replica
              • Modify a tenant replica
              • Delete a tenant replica
              • Lock a tenant
              • Unlock a tenant
              • Get an overview of all tenants
              • Query a system variable of a specified tenant
              • Fuzzy query tenant system variables
              • Query a tenant parameter
              • Fuzzy query tenant parameters
            • Backup management
              • Set the backup configuration for a tenant
              • Set cluster-level backup configurations
              • Update the backup configuration of a tenant
              • Update the cluster-level backup configuration
              • Initiate a backup for a single tenant
              • Initiate a cluster-level backup
              • View information about a backup task for a tenant
              • View cluster-level backup tasks
              • Modify the backup status of a tenant
              • Modify the status of cluster-level backups
              • Modify the log archiving status of a tenant
              • Modify the log archiving status of a cluster
            • Restore management
              • Initiate tenant restore
              • View tenant recovery
              • Cancel tenant restore
            • Recycle bin management
              • Query all tenant information in the recycle bin
              • Restore a tenant from the recycle bin
              • Clear a tenant from the recycle bin
            • Task management
              • OperateDag
              • GetDagDetails
              • GetNodeDetails
              • GetSubtaskDetails
              • QueryUnfinishedTasks
              • QueryUnfinishedAgentTasks
              • QueryUnfinishedObTasks
              • QueryLastObTask
              • QueryLastAgentTask
            • Other APIs
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Overview of system views

Last Updated:2026-04-24 09:34:06  Updated
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What is on this page
Overview of views in the sys tenant
Dictionary views overview
Overview of performance views
Views in a MySQL tenant
Dictionary views overview
Overview of performance views
Views in an Oracle tenant
Dictionary views
Overview of performance views

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Overview of views in the sys tenant

Dictionary views overview

Security privileges

View name Description
mysql.columns_priv This view displays the column privileges granted to users.
mysql.default_roles This view displays the default enabled roles of users.
mysql.procs_priv This view stores the privileges of stored procedures and functions.
mysql.role_edges This view displays the grant relationships between roles and users.
oceanbase.CDB_OB_DATABASE_PRIVILEGE This view displays the database privileges of users in each tenant.
oceanbase.CDB_OB_USERS This view displays the users and roles in all tenants of the cluster.
oceanbase.DBA_OB_DATABASE_PRIVILEGE This view displays the database privileges of users in the current tenant.
oceanbase.DBA_OB_USERS This view displays the users and roles in the current tenant.
oceanbase.CDB_OB_SENSITIVE_COLUMNS This view displays all columns protected by sensitive rules.
oceanbase.CDB_OB_SENSITIVE_RULES This view displays the definitions and attributes of all sensitive rules.
oceanbase.CDB_OB_SENSITIVE_RULE_PLAINACCESS_USERS This view displays all users or roles that have the plaintext data access privilege for columns associated with a sensitive rule.

AI models

View name Description
oceanbase.CDB_OB_AI_MODELS This view displays the AI model information of all tenants.
oceanbase.CDB_OB_AI_MODEL_ENDPOINTS This view displays the model access information of all tenants.
oceanbase.DBA_OB_AI_MODELS This view displays the AI model information of the current tenant.
oceanbase.DBA_OB_AI_MODEL_ENDPOINTS This view displays the model access information of the current tenant.

Backup and restore

View Description
oceanbase.CDB_OB_RESTORE_PROGRESS This view displays the execution progress of physical restore tasks.
oceanbase.CDB_OB_RESTORE_HISTORY This view displays the status of physical restore tasks upon completion.
oceanbase.CDB_OB_ARCHIVELOG_PIECE_FILES This view displays the status of pieces in a backup.
oceanbase.CDB_OB_BACKUP_SET_FILES This view displays the status of files in a backup set.
oceanbase.CDB_OB_BACKUP_JOBS This view displays backup jobs for all tenants in the cluster. A backup job is recorded when a user initiates a backup task.
oceanbase.CDB_OB_BACKUP_JOB_HISTORY This view displays the history of backup jobs for all tenants in the cluster.
oceanbase.CDB_OB_BACKUP_TASKS This view displays task-level backup tasks for all tenants in the cluster. Each task record corresponds to one backup set. Task records and job records are in a one-to-one correspondence.
oceanbase.CDB_OB_BACKUP_TASK_HISTORY This view displays the history of task-level backup tasks for all tenants in the cluster.
oceanbase.DBA_OB_BACKUP_JOBS This view displays backup jobs for the current tenant.
oceanbase.DBA_OB_BACKUP_JOB_HISTORY This view displays the history of backup jobs for the current tenant.
oceanbase.DBA_OB_BACKUP_TASKS This view displays the history of backup jobs for the current tenant.
oceanbase.DBA_OB_BACKUP_TASK_HISTORY This view displays the history of task-level backup tasks for the current tenant.
oceanbase.DBA_OB_BACKUP_SET_FILES This view displays the status of files in a backup set.
oceanbase.DBA_OB_RESTORE_PROGRESS This view displays the progress of ongoing restore tasks.
oceanbase.DBA_OB_RESTORE_HISTORY This view displays the history of completed restore tasks.
oceanbase.DBA_OB_ARCHIVE_DEST This view displays archive path configurations.
oceanbase.CDB_OB_ARCHIVE_DEST This view displays archive path configurations.
oceanbase.CDB_OB_BACKUP_PARAMETER This view displays backup parameters.
oceanbase.CDB_OB_BACKUP_DELETE_JOBS This view displays the progress of tenant-level backup cleanup jobs.
oceanbase.CDB_OB_BACKUP_DELETE_JOB_HISTORY This view displays the history of backup cleanup tasks executed in the tenant.
oceanbase.CDB_OB_BACKUP_DELETE_TASKS This view displays the information about backup_set/backup_piece cleanup tasks being executed in the tenant.
oceanbase.CDB_OB_BACKUP_DELETE_TASK_HISTORY This view displays the history of backup_set/backup_piece cleanup tasks completed in the tenant.
oceanbase.CDB_OB_BACKUP_DELETE_POLICY This view displays the cleanup policies set for expired/automatic cleanup in the tenant.
oceanbase.CDB_OB_BACKUP_STORAGE_INFO This view displays the information about backup destinations used for backup and restore in the tenant.
oceanbase.CDB_OB_BACKUP_STORAGE_INFO_HISTORY This view displays the history of backup destinations used for backup and restore in the tenant.
oceanbase.DBA_OB_BACKUP_STORAGE_INFO This view displays the information about backup destinations used for backup and restore in the tenant.
oceanbase.DBA_OB_BACKUP_STORAGE_INFO_HISTORY This view displays the history of backup destinations used for backup and restore in the tenant.
oceanbase.DBA_OB_BACKUP_DELETE_POLICY This view displays the cleanup policies set for expired/automatic cleanup in the tenant.
oceanbase.DBA_OB_BACKUP_DELETE_JOBS This view displays the execution progress of tenant-level backup cleanup jobs.
oceanbase.DBA_OB_BACKUP_DELETE_JOB_HISTORY This view displays the history of backup cleanup tasks executed in the tenant.
oceanbase.DBA_OB_BACKUP_DELETE_TASKS This view displays the information about backup_set/backup_piece cleanup tasks being executed in the tenant.
oceanbase.DBA_OB_BACKUP_DELETE_TASK_HISTORY This view displays the history of backup_set/backup_piece cleanup tasks completed in the tenant.
oceanbase.DBA_OB_ARCHIVELOG This view displays the status of log backups on each path.
oceanbase.DBA_OB_ARCHIVELOG_SUMMARY This view displays the status of all historical and current log backups.
oceanbase.DBA_OB_ARCHIVELOG_PIECE_FILES This view displays the status of pieces in a backup set.
oceanbase.CDB_OB_ARCHIVELOG This view displays the status of log archiving on each path.
oceanbase.CDB_OB_ARCHIVELOG_SUMMARY This view displays the status of all historical and current log archiving.
oceanbase.CDB_OB_RECOVER_TABLE_JOBS This view displays information about table-level restore jobs.
oceanbase.DBA_OB_RECOVER_TABLE_JOBS This view displays information about table-level restore jobs.
oceanbase.CDB_OB_IMPORT_TABLE_JOBS This view displays information about import jobs.
oceanbase.DBA_OB_IMPORT_TABLE_JOBS This view displays information about import jobs.
oceanbase.CDB_OB_IMPORT_TABLE_TASKS This view displays records of cross-tenant table-level import tasks.
oceanbase.DBA_OB_IMPORT_TABLE_TASKS This view displays records of table-level import tasks.
oceanbase.CDB_OB_RECOVER_TABLE_JOB_HISTORY This view displays the results of table-level restore jobs.
oceanbase.DBA_OB_RECOVER_TABLE_JOB_HISTORY This view displays the results of table-level restore jobs.
oceanbase.CDB_OB_IMPORT_TABLE_JOB_HISTORY This view displays the results of import jobs.
oceanbase.DBA_OB_IMPORT_TABLE_JOB_HISTORY This view displays the results of import jobs.
oceanbase.CDB_OB_IMPORT_TABLE_TASK_HISTORY This view displays the history of cross-tenant table-level import tasks.
oceanbase.DBA_OB_IMPORT_TABLE_TASK_HISTORY This view displays the history of cross-tenant table-level import tasks.
oceanbase.CDB_OB_LS_HISTORY This view displays the log streams that have existed in all tenants in the past. Only the sys tenant can access this view.
oceanbase.CDB_OB_LS_LOG_ARCHIVE_PROGRESS This view displays the log stream archiving progress of all tenants.
oceanbase.DBA_OB_LS_HISTORY This view displays the log streams that have existed in the current tenant in the past.
oceanbase.DBA_OB_LS_LOG_ARCHIVE_PROGRESS This view displays the log stream archiving progress of the current tenant.
oceanbase.DBA_OB_LS_REPLICA_TASKS This view displays the disaster recovery tasks at the Replica level that are running in the current tenant.
oceanbase.DBA_OB_LS_REPLICA_TASK_HISTORY This view displays the execution history of disaster recovery tasks in the current tenant.

Views and columns

View name Purpose
oceanbase.CDB_IND_COLUMNS This view displays the column information of the index tables of all tenants.
oceanbase.CDB_INDEXES This view displays the INDEX information of all tenants.
oceanbase.CDB_TABLES This view displays the TABLE information of all tenants.
oceanbase.CDB_OB_TABLEGROUP_TABLES This view displays the association between the TABLEGROUP and TABLE of all tenants under the sys tenant. Tables not in a TABLEGROUP are not displayed.
oceanbase.CDB_TAB_COLS This view displays the column information of the tables and views of all tenants.
oceanbase.CDB_TAB_COLS_V$ This view displays the column information of the tables and views of all tenants.
oceanbase.DBA_OB_TABLEGROUP_TABLES This view displays the association between the TABLEGROUP and TABLE. Tables not in a TABLEGROUP are not displayed.
oceanbase.DBA_PART_KEY_COLUMNS This view displays the columns included in the partition keys of all partitioned objects in the database.
oceanbase.DBA_SUBPART_KEY_COLUMNS This view displays the columns included in the subpartition keys of all partitioned objects in the database.
oceanbase.CDB_OB_COLUMN_CHECKSUM_ERROR_INFO This view displays the column checksum inconsistency information between the index tables (including global indexes and local indexes) and the base tables.
oceanbase.CDB_OB_TABLE_LOCATIONS This view displays the location of a table or partition, including system tables, user tables, and index tables.
oceanbase.DBA_OB_TABLE_LOCATIONS This view displays the location of a table or partition, including system tables, user tables, and index tables.
information_schema.TABLESPACES This view displays information about tablespaces.

Note

This view is available starting with MySQL 5.7. The related features are not supported and only the table structure can be queried.

CCL

View name Purpose
oceanbase.CDB_OB_CCL_RULES This view records the throttling rules of all tenants.
oceanbase.DBA_OB_CCL_RULES This view records the throttling rules of all tenants.

Replica log related

View name Description
oceanbase.CDB_OB_CS_REPLICA_STATS This view displays the progress of converting tablets in the log stream of C replicas on all OBServer nodes for all tenants.
oceanbase.CDB_IND_SUBPARTITIONS This view displays information about all index subpartitions in the database.
oceanbase.CDB_OB_LS_LOCATIONS This view displays the distribution of log streams (LS) replicas for all tenants.
oceanbase.CDB_OB_TABLEGROUPS This view displays the metadata of all table groups for all tenants under the sys tenant, mainly the partition information of the table groups.
oceanbase.CDB_OB_TABLEGROUP_PARTITIONS This view displays the primary partition information of partitioned table groups for all tenants under the sys tenant.
oceanbase.CDB_OB_TABLEGROUP_SUBPARTITIONS This view displays the secondary partition information of partitioned table groups for all tenants under the sys tenant.
oceanbase.CDB_OB_TABLET_TO_LS This view displays the list of tablets and the log stream information for each tablet for all tenants under the sys tenant.
oceanbase.CDB_OB_TABLET_REPLICAS This view displays the information about all tablet replicas in the current tenant. Each tablet replica is uniquely identified by the composite key: <TENANT_ID, TABLET_ID, SVR_IP, SVR_PORT, LS_ID>.
oceanbase.DBA_OB_TABLET_REPLICAS This view displays the information about all tablet replicas in the current tenant. Each tablet replica is uniquely identified by the composite key: <TABLET_ID, SVR_IP, SVR_PORT, LS_ID>.
oceanbase.DBA_OB_TABLET_TO_LS This view displays the list of tablets and the log stream information for each tablet in the current tenant.
oceanbase.DBA_OB_LS_LOCATIONS This view displays the distribution of log streams (LS) replicas in the current tenant.
oceanbase.CDB_OB_TABLET_CHECKSUM_ERROR_INFO This view displays information about data inconsistencies between tablet replicas.
oceanbase.CDB_OB_LS This view displays the status and recovery progress of log streams.
oceanbase.DBA_OB_LS This view displays the status and recovery progress of log streams.
oceanbase.CDB_OB_TABLE_SPACE_USAGE This view displays the sizes of all user tables (based on the leader replica in a multi-replica environment) for all tenants.
oceanbase.CDB_OB_TENANT_FLASHBACK_LOG_SCN This view displays information about each log truncation for all tenants in the current cluster.
oceanbase.DBA_OB_TENANT_FLASHBACK_LOG_SCN This view displays information about each log truncation for the current tenant.

Partition-related

View Purpose
oceanbase.CDB_IND_PARTITIONS This view displays the primary partitions of all index tables in all tenants.
oceanbase.CDB_IND_SUBPARTITIONS This view displays the subpartitions of all indexes in the database.
oceanbase.CDB_OB_DYNAMIC_PARTITION_TABLES This view displays the dynamic partition tables in all tenants.
oceanbase.CDB_PART_INDEXES This view displays the partitions of all index tables in all tenants.
oceanbase.CDB_PART_TABLES This view displays the partitions of all partitioned tables in all tenants.
oceanbase.CDB_SUBPARTITION_TEMPLATES This view displays the secondary partition templates of all partitioned tables in all tenants.
oceanbase.CDB_TAB_PARTITIONS This view displays the primary partitions of all partitioned tables in all tenants.
oceanbase.CDB_TAB_SUBPARTITIONS This view displays the secondary partitions of all partitioned tables in all tenants.
oceanbase.DBA_IND_PARTITIONS This view displays the primary partitions of all indexes.
oceanbase.DBA_OB_DYNAMIC_PARTITION_TABLES This view displays the dynamic partition tables of the current tenant.
oceanbase.DBA_PART_INDEXES This view displays the partitions of all partitioned indexes.
oceanbase.DBA_PART_TABLES This view displays the partitions of all user tables.
oceanbase.DBA_TAB_PARTITIONS This view displays the hierarchical partitions, storage parameters, and statistics of all partitions accessible to the current user.
oceanbase.DBA_TAB_SUBPARTITIONS This view displays the subpartition name, table name, partition name, storage attributes, and statistics generated by the DBMS_STATS package.
oceanbase.DBA_SUBPARTITION_TEMPLATES This view displays the descriptions of all subpartition templates.
oceanbase.CDB_PART_KEY_COLUMNS This view displays the primary partition keys of all partitioned objects (partitioned tables and partitioned indexes) in all tenants.
oceanbase.CDB_SUBPART_KEY_COLUMNS This view displays the secondary partition keys of all partitioned objects (partitioned tables and partitioned indexes) in all tenants.
oceanbase.DBA_IND_SUBPARTITIONS This view displays the subpartitions of all indexes in the database.
oceanbase.DBA_OB_TABLEGROUP_PARTITIONS This view displays the primary partitions of the partitioned table groups.
oceanbase.DBA_OB_TABLEGROUP_SUBPARTITIONS This view displays the subpartition information of a table group.
oceanbase.DBA_OB_TABLEGROUPS This view displays the metadata of a table group, mainly the partition information.

Load balancing

View name Purpose
oceanbase.CDB_OB_OBJECT_BALANCE_WEIGHT This view displays all partitions with special weights in all user tenants.
oceanbase.CDB_OB_TRANSFER_PARTITION_TASKS This view displays the current Transfer Partition tasks being processed by all tenants.
oceanbase.CDB_OB_TRANSFER_PARTITION_TASK_HISTORY This view displays the history of Transfer Partition tasks executed by all tenants.
oceanbase.DBA_OB_TRANSFER_PARTITION_TASKS This view displays the current Transfer Partition tasks being processed by the current tenant.
oceanbase.DBA_OB_TRANSFER_PARTITION_TASK_HISTORY This view displays the history of Transfer Partition tasks executed by the current tenant.
oceanbase.CDB_OB_BALANCE_JOBS This view displays the current load balancing jobs being executed by all tenants. Each tenant can only run one load balancing job (JOB) at a time. Each load balancing job generates multiple load balancing tasks (TASK), which are used to implement specific load balancing operations.
oceanbase.CDB_OB_BALANCE_JOB_HISTORY This view displays the history of load balancing jobs executed by all tenants.
oceanbase.CDB_OB_BALANCE_TASKS This view displays the current load balancing tasks being executed by all tenants.
oceanbase.CDB_OB_BALANCE_TASK_HISTORY This view displays the history of load balancing tasks executed by all tenants.
oceanbase.CDB_OB_TRANSFER_TASKS This view displays the current Transfer tasks being executed by all tenants.
oceanbase.CDB_OB_TRANSFER_TASK_HISTORY This view displays the history of Transfer tasks executed by all tenants.
oceanbase.DBA_OB_BALANCE_JOBS This view displays the current load balancing jobs being executed by the current tenant. Each tenant can only run one load balancing job (JOB) at a time. Each load balancing job generates multiple load balancing tasks (TASK), which are used to implement specific load balancing operations.
oceanbase.DBA_OB_BALANCE_JOB_HISTORY This view displays the history of load balancing jobs executed by the current tenant.
oceanbase.DBA_OB_BALANCE_TASKS This view displays the current load balancing tasks being executed by the current tenant. Each tenant can run multiple load balancing tasks at a time, and these tasks (TASK) belong to the same load balancing job (JOB).
oceanbase.DBA_OB_BALANCE_TASK_HISTORY This view displays the history of load balancing tasks executed by the current tenant.
oceanbase.DBA_OB_TRANSFER_TASKS This view displays the current Transfer tasks being executed by the current tenant.
oceanbase.DBA_OB_TRANSFER_TASK_HISTORY This view displays the history of Transfer tasks executed by the current tenant.

Shared storage

View name Purpose
CDB_OB_SS_SPACE_USAGE Records the storage space occupied by each tenant on the object storage.
DBA_OB_SS_SPACE_USAGE Records the storage space occupied by the current tenant on the object storage.
DBA_OB_ZONE_STORAGE Displays the information about the object storage configured in the shared storage cluster for each zone.
oceanbase.CDB_OB_SPACE_USAGE In the shared-storage (SS) mode, records the space occupied by different types of data in different Endpoints and Paths for each tenant.

I/O performance

View name Purpose
CDB_OB_STORAGE_IO_USAGE Displays the I/O operations of the object storage and cloud disks for all tenants.

InnoDB storage engine

View name Description
information_schema.NDB_TRANSID_MYSQL_CONNECTION_MAP This view displays the mapping information between NDB transactions, NDB transaction coordinators, and MySQL servers attached to the NDB cluster as API nodes.

Note

This view is available starting with MySQL 5.7. The related features are not supported and can only query the table structure.

information_schema.INNODB_TRX This view displays the information about active transactions.

Note

This view is available starting with MySQL 5.7. The related features are not supported and can only query the table structure.

information_schema.INNODB_LOCK_WAITS This view displays the information about locks that are waiting for conflicts.

Note

This view is available starting with MySQL 5.7. The related features are not supported and can only query the table structure.

information_schema.INNODB_LOCKS This view displays the information about all locks (waiting and held).

Note

This view is available starting with MySQL 5.7. The related features are not supported and can only query the table structure.

information_schema.INNODB_BUFFER_PAGE This view displays the information about all cached pages in the buffer pool.

Note

This view is available starting with MySQL 5.7. The related features are not supported and can only query the table structure.

information_schema.INNODB_BUFFER_PAGE_LRU This view displays the LRU information about pages in the InnoDB buffer pool.

Note

This view is available starting with MySQL 5.7. The related features are not supported and can only query the table structure.

information_schema.INNODB_BUFFER_POOL_STATS This view displays the statistics about the InnoDB buffer pool.

Note

This view is available starting with MySQL 5.7. The related features are not supported and can only query the table structure.

information_schema.INNODB_CMP This view displays the operation status information about compressed InnoDB tables.

Note

This view is available starting with MySQL 5.7. The related features are not supported and can only query the table structure.

information_schema.INNODB_CMP_PER_INDEX This view displays the operation information about compressed InnoDB tables and indexes.

Note

This view is available starting with MySQL 5.7. The related features are not supported and can only query the table structure.

information_schema.INNODB_CMP_PER_INDEX_RESET This view displays the reset time information about operations related to compressed InnoDB tables and indexes.

Note

This view is available starting with MySQL 5.7. The related features are not supported and can only query the table structure.

information_schema.INNODB_CMP_RESET This view displays the operation status about compressed InnoDB tables.

Note

This view is available starting with MySQL 5.7. The related features are not supported and can only query the table structure.

information_schema.INNODB_CMPMEM This view displays the status of compressed pages in the InnoDB buffer pool.

Note

This view is available starting with MySQL 5.7. The related features are not supported and can only query the table structure.

information_schema.INNODB_CMPMEM_RESET This view displays the reset time status of compressed pages in the InnoDB buffer pool.

Note

This view is available starting with MySQL 5.7. The related features are not supported and can only query the table structure.

information_schema.INNODB_SYS_DATAFILES This view displays the data file path information for each table and the general tablespace.

Note

This view is available starting with MySQL 5.7. The related features are not supported and can only query the table structure.

information_schema.INNODB_SYS_INDEXES This view displays the metadata information about InnoDB indexes.

Note

This view is available starting with MySQL 5.7. The related features are not supported and can only query the table structure.

information_schema.INNODB_SYS_TABLES This view displays the metadata information about InnoDB tables.

Note

This view is available starting with MySQL 5.7. The related features are not supported and can only query the table structure.

information_schema.INNODB_SYS_COLUMNS The document does not provide a description of the function.
information_schema.INNODB_SYS_TABLESPACES This view displays the metadata about InnoDB table files and the general tablespace.

Note

This view is available starting with MySQL 5.7. The related features are not supported and can only query the table structure.

information_schema.INNODB_SYS_TABLESTATS This view displays the low-level status information about InnoDB tables.

Note

This view is available starting with MySQL 5.7. The related features are not supported and can only query the table structure.

information_schema.INNODB_SYS_VIRTUAL This view displays the metadata about virtual generated columns in InnoDB.

Note

This view is available starting with MySQL 5.7. The related features are not supported and can only query the table structure.

information_schema.INNODB_TEMP_TABLE_INFO This view displays information about InnoDB temporary tables created by users.

Note

This view is available starting with MySQL 5.7.

information_schema.INNODB_METRICS This view displays InnoDB performance information.

Note

This view is available starting with MySQL 5.7.

Temporary files

View name Description
oceanbase.CDB_OB_TEMP_FILES This view displays information about temporary files.
oceanbase.DBA_OB_TEMP_FILES This view displays information about temporary files.

OBKV

View name Description
oceanbase.CDB_OB_KV_TTL_TASKS This view displays all TTL tasks that are being executed by all tenants in the sys tenant.
oceanbase.CDB_OB_KV_TTL_TASK_HISTORY This view displays all historical TTL tasks that are being executed by all tenants in the sys tenant.
oceanbase.DBA_OB_KV_TTL_TASKS This view displays all TTL tasks that are being executed by the current tenant.
oceanbase.DBA_OB_KV_TTL_TASK_HISTORY This view displays all historical TTL tasks that are being executed by the current tenant.
V$OB_KV_CLIENT_INFO This view displays the configuration parameters of all OBKV tenants that are connected to the current node.
GV$OB_KV_CLIENT_INFO This view displays the configuration parameters of all OBKV tenants that are connected to all nodes.
oceanbase.CDB_OB_KV_REDIS_TABLE This view stores the names of the storage tables corresponding to the Redis commands for all tenants.
oceanbase.DBA_OB_KV_REDIS_TABLE This view stores the names of the storage tables corresponding to the Redis commands for the current tenant.

Outline

View name Description
oceanbase.DBA_OB_OUTLINES This view displays the outline information of the execution plans of the current tenant.
oceanbase.DBA_OB_CONCURRENT_LIMIT_SQL This view displays the outline information of the throttling rules of the current tenant.
oceanbase.DBA_OB_OUTLINE_CONCURRENT_HISTORY This view displays the outline information of the execution plans and throttling rules of the current tenant.
DBA_OB_FORMAT_OUTLINES This view records the detailed information of the format outline of the current tenant.

Full-text index

View name Description
information_schema.INNODB_FT_BEING_DELETED This view displays the information about full-text indexes that are being deleted.

Note

This view is provided only for compatibility with MySQL 5.7. The related features are not supported. You can only query the table structure.

information_schema.INNODB_FT_CONFIG This view displays the configuration information of the InnoDB full-text search engine.

Note

This view is provided only for compatibility with MySQL 5.7. The related features are not supported. You can only query the table structure.

information_schema.INNODB_FT_DELETED This view displays the information about full-text indexes that are marked for deletion.

Note

This view is provided only for compatibility with MySQL 5.7. The related features are not supported. You can only query the table structure.

information_schema.INNODB_FT_INDEX_CACHE This view displays the cache status information of the InnoDB full-text indexes.

Note

This view is provided only for compatibility with MySQL 5.7. The related features are not supported. You can only query the table structure.

information_schema.INNODB_SYS_FIELDS This view displays the metadata information about the key columns (fields) of the InnoDB indexes, which is equivalent to the information in the SYS_FIELDS table of the InnoDB data dictionary.

Note

This view is provided only for compatibility with MySQL 5.7. The related features are not supported. You can only query the table structure.

Other index-related views

View Description
oceanbase.DBA_INDEX_USAGE This view displays index usage data.
oceanbase.CDB_INDEX_USAGE This view displays index usage data.

Task scheduling-related views

View Description
oceanbase.CDB_SCHEDULER_JOB_RUN_DETAILS The CDB_SCHEDULER_JOB_RUN_DETAILS view displays information about all scheduler jobs in all tenants.
oceanbase.DBA_SCHEDULER_WINDOWS This view displays information about all scheduler windows in the current tenant.
oceanbase.CBA_SCHEDULER_RUNNING_JOBS This view displays information about all running jobs in the current tenant.
oceanbase.DBA_SCHEDULER_RUNNING_JOBS This view displays information about all running jobs in the current tenant.

Disaster recovery-related views

View Description
oceanbase.CDB_OB_SYNC_STANDBY_DEST This view displays the information about strong synchronization downstream tenants for all tenants.
oceanbase.CDB_OB_ACCESS_POINT This view displays the list of servers for the tenant entry. In a physical standby database scenario based on network, it is mainly used to obtain the IP address and SQL port number of the OBServer node in the primary tenant's replica.
oceanbase.CDB_OB_LOG_RESTORE_SOURCE This view displays the log restore sources of all physical restore tenants and standby tenants.
oceanbase.CDB_OB_LS_REPLICA_TASKS This view displays the ongoing disaster recovery tasks at the Replica level for all tenants. Only the system tenant can view this view.
oceanbase.CDB_OB_LS_REPLICA_TASK_HISTORY This view displays the execution history of disaster recovery tasks for all tenants.
oceanbase.DBA_OB_LOG_RESTORE_SOURCE This view displays the log restore sources of the current tenant.
oceanbase.DBA_OB_ACCESS_POINT This view displays the list of servers for the tenant entry of the current tenant. In a physical standby database scenario based on network, it is mainly used to obtain the IP address and SQL port number of the OBServer node in the primary tenant's replica.
oceanbase.DBA_OB_SYNC_STANDBY_DEST This view displays the information about strong synchronization downstream tenants for the current tenant.

Root Service-related views

View Description
oceanbase.DBA_OB_ROOTSERVICE_EVENT_HISTORY This view displays the event history of Root Service.

SPM-related views

View Description
oceanbase.DBA_SQL_PLAN_BASELINES This view displays the SQL plan baselines in SPM.
oceanbase.DBA_SQL_MANAGEMENT_CONFIG This view displays the configuration parameters in SPM.
oceanbase.CDB_OB_SPM_EVO_RESULT This view displays the SPM plan evolution information for all tenants.
oceanbase.DBA_OB_SPM_EVO_RESULT This view displays the SPM plan evolution information for the tenant.

SQL query-related views

| View | Description | | oceanbase.DBA_OB_USER_DEFINED_RULES | This view records the rules for rewriting SQL statements in the current tenant. |

Upgrade-related views

View Description
oceanbase.DBA_OB_CLUSTER_EVENT_HISTORY Only the system tenant can access this view, which displays important cluster-level events. Currently, it only supports displaying cluster upgrade-related events.

Event history monitoring

View name Purpose
information_schema.events Records all Event information.
oceanbase.DBA_OB_SERVER_EVENT_HISTORY This view displays OBServer node event history information.
oceanbase.CDB_OB_TENANT_EVENT_HISTORY This view displays the historical operation records of all tenants in the cluster.
oceanbase.DBA_OB_TENANT_EVENT_HISTORY This view displays the historical operation records of the current tenant.
oceanbase.DBA_OB_DEADLOCK_EVENT_HISTORY This view displays the historical records of deadlock events. In a non-root tenant, this view displays the historical records of the current tenant.

Basic database information

View name Purpose
oceanbase.CDB_OB_DATABASES This view displays the database metadata of all tenants in the sys tenant.
oceanbase.DBA_OB_DATABASES This view displays the database metadata of the current tenant.
oceanbase.DBA_OB_ZONES This view displays the information of all zones.

Data dictionary

View name Purpose
oceanbase.CDB_OB_DATA_DICTIONARY_IN_LOG This view records the location range of the data dictionary in the system log stream to facilitate CDC consumption of the data dictionary.
oceanbase.DBA_OB_DATA_DICTIONARY_IN_LOG This view records the location range of the data dictionary in the system log stream to facilitate CDC consumption of the data dictionary.

Locks

View name Purpose
oceanbase.CDB_OB_DEADLOCK_EVENT_HISTORY This view displays the historical records of deadlock events. In the root tenant, this view displays the historical records of all tenants.
oceanbase.DBA_OB_DEADLOCK_EVENT_HISTORY This view displays the historical records of deadlock events. In a non-root tenant, this view displays the historical records of the current tenant.

Statistics and histogram related

View name Description
oceanbase.DBA_TAB_STATISTICS This view displays the optimizer statistics of all tables in the database.
oceanbase.DBA_TAB_COL_STATISTICS This view displays the column statistics and histogram information of all tables in the database.
oceanbase.DBA_PART_COL_STATISTICS This view displays the column statistics and histogram information of all partitioned tables in the database.
oceanbase.DBA_SUBPART_COL_STATISTICS This view displays the column statistics and histogram information of all subpartitioned tables in the database.
oceanbase.DBA_TAB_HISTOGRAMS This view displays the histograms of all columns in the database.
oceanbase.DBA_PART_HISTOGRAMS This view displays the histogram data (endpoints) of all partitioned tables in the database.
oceanbase.DBA_SUBPART_HISTOGRAMS This view displays the histogram data (endpoints) of all subpartitioned tables in the database.
oceanbase.DBA_TAB_STATS_HISTORY This view displays the table statistics history of all tables in the database.
oceanbase.DBA_IND_STATISTICS This view displays the optimizer statistics of all indexes in the database.
oceanbase.DBA_TAB_MODIFICATIONS This view displays the cumulative modification information of tables in the database.
oceanbase.CDB_TAB_COL_STATISTICS This view displays the column-level statistics in the system tenant.
oceanbase.DBA_OB_TABLE_OPT_STAT_GATHER_HISTORY This view queries the historical collection execution of tables.
oceanbase.DBA_OB_TABLE_STAT_STALE_INFO This view displays the number of DML operations performed on each table since the last statistics collection and whether the current statistics are stale.
oceanbase.DBA_OB_TASK_OPT_STAT_GATHER_HISTORY This view displays the execution of historical collection tasks in the current tenant.

External resources related

View name Description
oceanbase.CDB_OB_EXTERNAL_RESOURCES This view displays all uploaded resource files in the system tenant.
oceanbase.CDB_OB_EXTERNAL_TABLE_FILES This view displays the file list of all external tables created by all tenants.
oceanbase.DBA_OB_EXTERNAL_RESOURCES This view displays the uploaded resource files.
oceanbase.DBA_OB_EXTERNAL_TABLE_FILES This view displays the file list of all external tables created in the current tenant.

WR-related views

View name Description
oceanbase.CDB_WR_ACTIVE_SESSION_HISTORY This view displays the ASH data of all tenants after persistence.
oceanbase.CDB_WR_CONTROL This view displays the WR-related configuration information.
oceanbase.CDB_WR_EVENT_NAME This view displays the tenant-level wait event names of all tenants after persistence.
oceanbase.CDB_WR_SNAPSHOT This view displays the SNAPSHOT information of all tenants.
oceanbase.CDB_WR_SQLSTAT This view displays the basic performance statistics of SQL statements executed by all tenants. Each SQL statement is represented as a row (i.e., each unique combination of SQL_ID and Plan_Hash is a row).
oceanbase.CDB_WR_SQLTEXT This view displays the SQL texts collected by WR for all tenants.
oceanbase.CDB_WR_STATNAME This view displays the names of system statistics for all tenants.
oceanbase.CDB_WR_SYS_TIME_MODEL This view displays the WR data of the Time Model statistics for all tenants.
oceanbase.CDB_WR_SYSSTAT This view displays the details of the system statistics for all tenants.
oceanbase.CDB_WR_SYSTEM_EVENT This view displays the tenant-level wait event information of all tenants after persistence.
oceanbase.DBA_WR_ACTIVE_SESSION_HISTORY This view displays the ASH data of the current tenant after persistence.
oceanbase.DBA_WR_CONTROL This view displays the WR-related configuration information.
oceanbase.DBA_WR_EVENT_NAME This view displays the tenant-level wait event names of the current tenant after persistence.
oceanbase.DBA_WR_SNAPSHOT This view displays the SNAPSHOT information of the current tenant.
oceanbase.DBA_WR_SQLSTAT This view displays the basic performance statistics of SQL statements executed by the current tenant. Each SQL statement is represented as a row (i.e., each unique combination of SQL_ID and Plan_Hash is a row).
oceanbase.DBA_WR_SQLTEXT This view displays the SQL texts collected by WR for the current tenant.
oceanbase.DBA_WR_STATNAME This view displays the names of system statistics for the current tenant.
oceanbase.DBA_WR_SYS_TIME_MODEL This view displays the WR data of the Time Model statistics for the current tenant.
oceanbase.DBA_WR_SYSSTAT This view displays the details of the system statistics for the current tenant.
oceanbase.DBA_WR_SYSTEM_EVENT This view displays the persistent tenant-level wait event information of the current tenant.
oceanbase.CDB_WR_SQL_PLAN This view displays the GV$OB_SQL_PLAN data collected by WR.
oceanbase.DBA_WR_SQL_PLAN This view displays the GV$OB_SQL_PLAN data collected by WR.

Foreign keys

View name Description
information_schema.INNODB_SYS_FOREIGN This view displays metadata information about InnoDB foreign keys, which is equivalent to the information in the SYS_FOREIGN table of the InnoDB data dictionary.

Note

This view is available only for compatibility with MySQL 5.7. The related features are not supported, and only the table structure can be queried.

information_schema.INNODB_SYS_FOREIGN_COLS This view displays status information about InnoDB foreign key columns, which is equivalent to the information in the SYS_FOREIGN_COLS table of the InnoDB data dictionary.

Note

This view is available only for compatibility with MySQL 5.7. The related features are not supported, and only the table structure can be queried.

Materialized views

View name Description
oceanbase.CDB_MVIEW_RUNNING_JOBS This view displays the materialized view-related tasks that are currently running for all tenants, including refresh tasks and MLOG cleanup tasks.
oceanbase.DBA_MVIEW_DEPS This view displays the dependencies of materialized views for the current tenant.
oceanbase.DBA_MVIEW_LOGS This view displays the logs of materialized views.
oceanbase.DBA_MVIEW_RUNNING_JOBS This view displays the materialized view-related tasks that are currently running for the current tenant, including refresh tasks and MLOG cleanup tasks.
oceanbase.DBA_MVIEWS This view displays the information about all materialized views.
oceanbase.DBA_MVREF_CHANGE_STATS This view displays the statistics related to materialized view refreshes.
oceanbase.DBA_MVREF_RUN_STATS This view displays the information about each refresh run of a materialized view. Each run is identified by a REFRESH_ID.
oceanbase.DBA_MVREF_STATS This view displays the basic timing statistics about materialized view refreshes.
oceanbase.DBA_MVREF_STATS_PARAMS This view displays the refresh statistics attributes associated with each materialized view.
oceanbase.DBA_MVREF_STATS_SYS_DEFAULTS This view displays the system-wide default values for the statistics attributes of materialized view refreshes.
oceanbase.DBA_MVREF_STMT_STATS This view displays the information about the refresh statements.
oceanbase.CDB_MVIEW_LOGS This view displays the logs of materialized views for all tenants.
oceanbase.CDB_MVIEWS This view displays the information about all materialized views.
oceanbase.CDB_MVREF_CHANGE_STATS This view displays the statistics related to materialized view refreshes.
oceanbase.CDB_MVREF_RUN_STATS This view displays the information about each refresh run of a materialized view. Each run is identified by a REFRESH_ID.
oceanbase.CDB_MVREF_STATS This view displays the basic timing statistics about materialized view refreshes.
oceanbase.CDB_MVREF_STATS_PARAMS This view displays the refresh statistics attributes associated with each materialized view.
oceanbase.CDB_MVREF_STATS_SYS_DEFAULTS This view displays the system-wide default values for the statistics attributes of materialized view refreshes.
oceanbase.CDB_MVREF_STMT_STATS This view displays the information about the refresh statements.

Vector index

View Description
oceanbase.CDB_OB_VECTOR_INDEX_TASKS This view displays information about all vector index partition rebuild tasks in all tenants of the cluster.
oceanbase.CDB_OB_VECTOR_INDEX_TASK_HISTORY This view displays the historical information about all vector index partition rebuild tasks in all tenants of the cluster.
oceanbase.DBA_OB_VECTOR_INDEX_TASKS This view displays information about all vector index partition rebuild tasks in the current tenant.
oceanbase.DBA_OB_VECTOR_INDEX_TASK_HISTORY This view displays the historical information about all vector index partition rebuild tasks in the current tenant.

Major compaction

View Description
oceanbase.CDB_OB_MAJOR_COMPACTION This view displays the global information about major compactions in all tenants under the sys tenant.
oceanbase.CDB_OB_ZONE_MAJOR_COMPACTION This view displays the information about major compactions in each zone of all tenants under the sys tenant.
oceanbase.DBA_OB_ZONE_MAJOR_COMPACTION This view displays the information about major compactions in each zone of the current tenant.
oceanbase.CDB_OB_FREEZE_INFO This view displays the version information generated by major compactions.
oceanbase.DBA_OB_FREEZE_INFO This view displays the version information generated by major compactions.

Tenant management

View Description
oceanbase.DBA_OBJECTS This view displays all database objects in the database. The view definition is consistent with that of ALL_OBJECTS.
oceanbase.CDB_OBJECTS This view displays the object information of all tenants under the sys tenant.
oceanbase.DBA_OB_TENANTS This view displays the basic information about all tenants, including the sys tenant, user-created tenants (user tenants), and the meta tenant. You can use the TENANT_TYPE column to distinguish the types of tenants.
oceanbase.DBA_OB_TENANT_JOBS This view displays the information about tasks at the tenant level.
oceanbase.CDB_OB_SYS_VARIABLES This view displays the system variable information of all tenants under the sys tenant.
oceanbase.DBA_OB_CLONE_HISTORY This view displays the information about completed clone tasks.
oceanbase.DBA_OB_CLONE_PROGRESS This view displays the information about running clone tasks.
oceanbase.DBA_OB_SYS_VARIABLES This view displays the configuration of system variables (including hidden variables whose names start with an underscore) of the current tenant.

Resource management

View name Description
oceanbase.DBA_OB_RESOURCE_POOLS This view displays the resource pool information of all tenants.
oceanbase.DBA_OB_UNIT_JOBS This view displays all unit-related tasks.
oceanbase.DBA_OB_UNITS This view displays the unit information of all tenants.
oceanbase.DBA_OB_UNIT_CONFIGS This view displays the unit specifications of all tenants.
oceanbase.DBA_OB_SEQUENCE_OBJECTS This view displays all SEQUENCEs in the database.
CDB_OB_RSRC_DIRECTIVES This view displays the resource configuration parameters of all tenants in the Resource Manager.

Auto-increment column

View name Description
oceanbase.CDB_OB_AUTO_INCREMENT This view displays the information of all auto-increment columns in the current cluster. Only the sys tenant can view this view.
oceanbase.DBA_OB_AUTO_INCREMENT This view displays the information of all auto-increment columns in the current tenant.

Arbitration service

View name Description
oceanbase.CDB_OB_LS_ARB_REPLICA_TASKS Only the sys tenant can access this view. This view displays the arbitration service tasks running in the current tenant and corresponding user tenants.
oceanbase.CDB_OB_LS_ARB_REPLICA_TASK_HISTORY Only the sys tenant can access this view. This view displays the history of arbitration service tasks executed by all tenants.
oceanbase.DBA_OB_ARBITRATION_SERVICE Only the sys tenant can access this view. This view displays the arbitration service configuration information of the current cluster.
oceanbase.DBA_OB_LS_ARB_REPLICA_TASKS This view displays the arbitration service tasks running in the current tenant.
oceanbase.DBA_OB_LS_ARB_REPLICA_TASK_HISTORY This view displays the history of arbitration service tasks executed by the current tenant.

Overview of performance views

ASH related

View name Description
GV$ACTIVE_SESSION_HISTORY Displays the active session history.
V$ACTIVE_SESSION_HISTORY Displays the active session history.
GV$OB_ACTIVE_SESSION_HISTORY Displays the active session history of all OBServer nodes in all tenants.
V$OB_ACTIVE_SESSION_HISTORY Displays the active session history of the current OBServer node in all tenants.

Catalog related

View name Description
GV$OB_HMS_CLIENT_POOL_STAT Displays the usage of the HMS Catalog clients in all tenants.
V$OB_HMS_CLIENT_POOL_STAT Displays the usage of the HMS Catalog clients in all tenants.

DTL related

View name Description
GV$OB_DTL_INTERM_RESULT_MONITOR Displays the monitoring information of the DTL intermediate result manager.
V$OB_DTL_INTERM_RESULT_MONITOR Displays the monitoring information of the DTL intermediate result manager.

Log replica related

View name Description
GV$OB_LOG_STAT Displays the status of Palf.
GV$OB_LS_SNAPSHOTS Displays the information about the log stream snapshots stored in the persistent storage of all units.
V$OB_LOG_STAT Displays the status of Palf.

Partition related

View name Description
V$OB_DYNAMIC_PARTITION_TABLES Displays the information about dynamic partition tables in all tenants.

Shared storage

View name Description
V$OB_SS_SSTABLES This view displays the SSTable information on the shared storage of all tenants.
GV$OB_SS_LOCAL_CACHE This view displays the metrics of various types of cached data in the local cache of each OBServer node in shared storage mode for all tenants.
V$OB_SS_LOCAL_CACHE This view displays the metrics of various types of cached data in the local cache of the current OBServer node in shared storage mode for all tenants.
GV$OB_STORAGE_CACHE_TASKS This view displays the cache task information for all tenants on all OBServer nodes.
V$OB_STORAGE_CACHE_TASKS This view displays the cache task information for all tenants on the current OBServer node.
GV$OB_TABLET_LOCAL_CACHE This view displays the overall cache information for all tenants on all OBServer nodes.
V$OB_TABLET_LOCAL_CACHE This view displays the overall cache information for all tenants on the current OBServer node.
GV$OB_SERVER_STORAGE This view displays the information about the object storage configured in the shared storage cluster on all OBServer nodes.
V$OB_SERVER_STORAGE This view displays the information about the object storage configured in the shared storage cluster on the current OBServer node.
GV$OB_SS_OBJECT_TYPE_IO_STAT This view displays the read, write, or delete usage of different types of objects on each node of the tenant.
V$OB_SS_OBJECT_TYPE_IO_STAT This view displays the read, write, or delete usage of different types of objects on the current node of the tenant.

I/O performance

View name Description
GV$OB_SHARED_STORAGE_QUOTA This view displays the I/O access resource information on all OBServer nodes.
V$OB_SHARED_STORAGE_QUOTA This view displays the I/O access resource information on the current OBServer node.
GV$OB_IO_CALIBRATION_STATUS This view displays the execution status of the I/O calibration task.
V$OB_IO_CALIBRATION_STATUS This view displays the execution status of the I/O calibration task.
GV$OB_IO_BENCHMARK This view displays the disk calibration data used by the I/O module.
V$OB_IO_BENCHMARK This view displays the disk calibration data used by the I/O module.

Plan cache

View name Description
GV$OB_PLAN_CACHE_STAT This view displays the overall status of each plan cache on all OBServer nodes for the current tenant.
V$OB_PLAN_CACHE_STAT This view records the overall status of each plan cache on all servers for the current tenant.
GV$OB_PLAN_CACHE_PLAN_STAT This view records the status of each cached object in the plan cache on all servers for the current tenant.
V$OB_PLAN_CACHE_PLAN_STAT This view records the status of each cached object in the plan cache on the current server for the current tenant.
GV$OB_PLAN_CACHE_PLAN_EXPLAIN This view displays the physical execution plans cached in the plan caches on all servers.
V$OB_PLAN_CACHE_PLAN_EXPLAIN This view displays the physical execution plans cached in the plan cache on the current server.

Encrypted tables

View name Description
V$OB_ENCRYPTED_TABLES This view displays the encryption status of tables with encryption enabled.
V$ENCRYPTED_TABLESPACES This view displays the encryption status of tablespaces with encryption enabled.

Memory

View name Description
GV$OB_MEMORY This view displays tenant-level memory statistics.
V$OB_MEMORY This view displays tenant-level memory statistics.
GV$OB_MEMSTORE This view displays the memory usage of MemTables for all tenants on all servers.
V$OB_MEMSTORE This view displays tenant-level MemStore statistics.
GV$OB_MEMSTORE_INFO This view displays the details of MemTables for all partitions of all tenants on all servers.
V$OB_MEMSTORE_INFO This view displays the details of MemTables for all partitions of all tenants on all servers.
GV$OB_SSTABLES This view displays the SSTable information for the current tenant.
V$OB_SSTABLES This view displays the SSTable information for the current tenant.
GV$OB_TENANT_MEMORY This view displays the memory usage of each tenant in the cluster.
V$OB_TENANT_MEMORY This view displays the memory usage of each tenant in the current observer process.

OBKV

View name Description
GV$OB_KV_GROUP_COMMIT_STATUS In the sys tenant, the GV$OB_KV_GROUP_COMMIT_STATUS view can access the group commit status information of all OBKV tenant clients.
V$OB_KV_GROUP_COMMIT_STATUS In the sys tenant, the V$OB_KV_GROUP_COMMIT_STATUS view can access the group commit status information of all OBKV tenant clients on the current node.
V$OB_VECTOR_MEMORY This view displays detailed statistics of vector index data memory usage for all tenants.

PS

View name Description
GV$OB_PS_STAT This view monitors the overall status of the PS cache, including hit rate, memory usage, and the number of cached items.
V$OB_PS_STAT This view monitors the overall status of the PS cache, including hit rate, memory usage, and the number of cached items.
GV$OB_PS_ITEM_INFO This view provides monitoring capabilities for prepared statements, containing basic information about all prepared statements in the PS cache.
V$OB_PS_ITEM_INFO This view provides monitoring capabilities for prepared statements, containing basic information about all prepared statements in the PS cache.

PX

View name Description
GV$OB_PX_P2P_DATAHUB This view displays information about parallel execution data transfer operations.
GV$OB_PX_TARGET_MONITOR This view displays the usage of PX threads on all OBServer nodes.
V$OB_PX_TARGET_MONITOR This view displays the usage of PX threads on OBServer nodes.

Full-Link Tracing

View name Description
GV$OB_FLT_TRACE_CONFIG This view displays diagnostic information about full-link tracing.

Locks

View name Description
GV$LATCH This view displays latch information for all OBServer nodes in the cluster.
V$LATCH This view displays latch information for all OBServer nodes in the cluster.

Event-related

View name Description
GV$OB_PROCESSLIST This view displays session information on all OBServer nodes of the tenant.
GV$OB_TRANSACTION_PARTICIPANTS This view displays transaction participant information on all OBServer nodes.
GV$SESSION_EVENT This view displays session-level waiting events on all OBServer nodes in the cluster.
GV$SESSION_WAIT This view displays information about the current or previous waiting events of all sessions on all servers, including the waiting event name and waiting time.
GV$SESSION_WAIT_HISTORY This view displays information about the last 10 waiting events of all sessions on all servers.
GV$SYSTEM_EVENT This view displays tenant-level waiting events in the cluster.
GV$SESSTAT This view displays session-level statistical events on all OBServer nodes.
GV$SYSSTAT This view displays tenant-level statistical events on all servers.
V$OB_PROCESSLIST This view displays session information on the current OBServer node.
V$OB_TRANSACTION_PARTICIPANTS This view displays transaction participant information on all OBServer nodes.
V$STATNAME This view displays the definitions of all statistical events.
V$EVENT_NAME This view displays the definitions of all statistical events on the current OBServer node.
V$SESSION_WAIT This view displays the details of the current waiting events of each session. According to the agreement, each waiting event has three parameters, which will record the corresponding values.
V$SESSION_WAIT_HISTORY This view displays the details of the current waiting events of each session, including the last 10 waiting events.
V$SESSTAT This view displays the overview of session-level statistical events.
V$SYSSTAT This view displays tenant-level statistical events on the current server.
V$SYSTEM_EVENT This view displays tenant-level waiting events.
GV$SESSION_LONGOPS This view displays the execution status and progress of DDL operations in the cluster.
V$SESSION_LONGOPS This view displays the execution status and progress of DDL operations on the current OBServer node.

SQL audit

View name Description
GV$OB_SQL_AUDIT This view displays the source and execution status of each SQL request on all servers.
V$OB_SQL_AUDIT This view displays the source and execution status of each SQL request on the current server.

Session

View name Description
GV$OB_SESSION This view records the session information created on all servers.
V$SESSION_EVENT This view displays the wait events of each session.

Basic database information

View name Description
GV$OB_KVCACHE This view displays the KVCACHE information on each OBServer node.
GV$OB_PARAMETERS This view displays the configuration information on all OBServer nodes where the tenant is located.
GV$OB_SERVER_SCHEMA_INFO This view displays the schema information on all servers.
GV$OB_SERVERS This view displays the information of all OBServer nodes.
GV$OB_UNITS This view displays the unit information of the OBServer node where the tenant is located. The system tenant can view the unit information of all OBServer nodes in the cluster.
V$OB_KVCACHE This view displays the KVCACHE information on each OBServer node.
V$OB_PARAMETERS This view displays the configuration information on the current OBServer node.
V$OB_SERVER_SCHEMA_INFO This view displays the schema information on all servers.
V$OB_SERVERS This view displays the information of the current OBServer node.
V$OB_UNITS This view displays the unit information of the current OBServer node.
GV$DML_STATS This view displays the DML information in the current user table.
V$DML_STATS This view displays the DML information in the current user table.
V$OB_COMPATIBILITY_CONTROL This view displays the features that can be controlled for compatibility with the product behavior of the OceanBase Database release version.

Network-related views

View name Description
GV$OB_RPC_OUTGOING This view displays the statistics of RPC packets sent from all OBServer nodes.
GV$OB_RPC_INCOMING This view displays the statistics of RPC packets received by all OBServer nodes.
V$OB_RPC_OUTGOING This view displays the statistics of RPC packets sent from all OBServer nodes for different tenants.
V$OB_RPC_INCOMING This view displays the statistics of RPC packets received by all OBServer nodes for different tenants.

Workarea-related views

View name Description
GV$SQL_WORKAREA This view displays the statistics of workareas for all operators executed by SQL automatic memory management.
GV$SQL_WORKAREA_ACTIVE This view displays the statistics of workareas for active operators.
GV$SQL_WORKAREA_HISTOGRAM This view displays the statistics of workareas executed in the past, such as the number of times full in-memory processing is performed in the 1M-2M range and the number of one-pass operations.
GV$OB_SQL_WORKAREA_MEMORY_INFO This view displays some overall information about the SQL workarea, such as the maximum available memory, current used memory, and current held memory.
V$SQL_WORKAREA This view displays the statistics of workareas for all operators executed by SQL automatic memory management.
V$SQL_WORKAREA_ACTIVE This view displays the statistics of workareas for active operators.
V$SQL_WORKAREA_HISTOGRAM This view displays the statistics of workareas executed in the past, such as the number of times full in-memory processing is performed in the 1M-2M range and the number of one-pass operations.
V$OB_SQL_WORKAREA_MEMORY_INFO This view displays some overall information about the SQL workarea, such as the maximum available memory, current used memory, and current held memory.

WR-related

View name Description
GV$OB_QUERY_RESPONSE_TIME_HISTOGRAM This view is available starting with OceanBase Database V2.2.
GV$OB_RES_MGR_SYSSTAT This view is available starting with OceanBase Database V2.2.
GV$OB_SESS_TIME_MODEL This view is available starting with OceanBase Database V2.2.
GV$OB_SQLSTAT This view is available starting with OceanBase Database V2.2.
GV$OB_SYS_TIME_MODEL This view is available starting with OceanBase Database V2.2.
V$OB_QUERY_RESPONSE_TIME_HISTOGRAM This view is available starting with OceanBase Database V2.2.
V$OB_RES_MGR_SYSSTAT This view is available starting with OceanBase Database V2.2.
V$OB_SESS_TIME_MODEL This view is available starting with OceanBase Database V2.2.
V$OB_SQLSTAT This view is available starting with OceanBase Database V2.2.
V$OB_SYS_TIME_MODEL This view is available starting with OceanBase Database V2.2.

Vector index-related

View name Description
GV$OB_HNSW_INDEX_INFO This view is available starting with OceanBase Database V2.2.
GV$OB_IVF_INDEX_INFO This view is available starting with OceanBase Database V2.2.
GV$OB_VECTOR_MEMORY This view is available starting with OceanBase Database V2.2.
V$OB_HNSW_INDEX_INFO This view is available starting with OceanBase Database V2.2.
V$OB_IVF_INDEX_INFO This view is available starting with OceanBase Database V2.2.

Thread-related

View Name Description
GV$OB_PX_WORKER_STAT This view displays the execution information of each thread in parallel execution scenarios.
V$OB_PX_WORKER_STAT This view displays the execution information of each thread in parallel execution scenarios.
GV$OB_TENANT_RUNTIME_INFO This view displays the information about queues and thread limits in tenant threads.
V$OB_TENANT_RUNTIME_INFO This view displays the information about queues and thread limits in tenant threads.

Execution plan-related

View Name Description
GV$SQL_PLAN_MONITOR This view displays the statistics of slow queries on all OBServer nodes at the plan level. Each slow query has one statistical record, and the trace information of the plan is recorded.
V$SQL_PLAN_MONITOR This view displays the statistics of slow queries at the operation level. Each operation has one statistical record.
V$SQL_MONITOR_STATNAME This view displays the meaning of the numbers in the OTHERSTAT_X_ID field of the GV$SQL_PLAN_MONITOR view.

Views related to major compactions

View name Description
GV$OB_MERGE_INFO This view displays the statistics of major compactions completed in the OceanBase cluster.
V$OB_MERGE_INFO This view displays the statistics of major compactions completed in the OceanBase cluster.
GV$OB_COMPACTION_PROGRESS This view displays the OBServer-level major compaction progress of the tenant.
GV$OB_COMPACTION_SUGGESTIONS This view displays the suggestions for major compactions.
GV$OB_COMPACTION_DIAGNOSE_INFO This view displays the diagnostic information of major compactions.
GV$OB_TABLET_COMPACTION_HISTORY This view displays the historical information of tablet-level major compactions.
GV$OB_TABLET_COMPACTION_PROGRESS This view displays the progress of tablet-level major compactions.
V$OB_COMPACTION_PROGRESS This view displays the server-level major compaction progress of the tenant.
V$OB_COMPACTION_SUGGESTIONS This view displays the suggestions for major compactions.
V$OB_COMPACTION_DIAGNOSE_INFO This view displays the diagnostic information of major compactions.
V$OB_TABLET_COMPACTION_HISTORY This view displays the historical information of tablet-level major compactions.
V$OB_TABLET_COMPACTION_PROGRESS This view displays the progress of tablet-level major compactions.

Views related to resource management

View name Description
GV$OB_GROUP_IO_STAT This view displays the real-time status of each resource group on all OBServer nodes for all tenants.
GV$OB_FUNCTION_IO_STAT This view displays the function-level I/O statistics on all OBServer nodes for all tenants.
V$OB_GROUP_IO_STAT This view displays the real-time status of each resource group on the current OBServer node for all tenants.
V$OB_FUNCTION_IO_STAT This view displays the function-level I/O statistics on the current OBServer node for all tenants.

Views in a MySQL tenant

Dictionary views overview

Security and privileges

View Purpose
mysql.db This view displays database-level privileges (VIRTUAL_TABLE).
mysql.user This view records user-level privileges (VIRTUAL_TABLE).
information_schema.COLUMN_PRIVILEGES This view displays column privileges.
information_schema.SCHEMA_PRIVILEGES This view describes database privileges.
information_schema.TABLE_PRIVILEGES This view records table privileges.
information_schema.USER_PRIVILEGES This view records user privileges.
information_schema.CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS This view displays the number of failed login attempts for different users.
information_schema.ROLE_TABLE_GRANTS This view displays the table-level privileges granted to activated roles for the current session, as well as the table-level privileges granted to other roles by these roles.
information_schema.ROLE_COLUMN_GRANTS This view displays the column privileges granted to activated roles for the current session, as well as the column privileges granted to other roles by these roles.
information_schema.ROLE_ROUTINE_GRANTS This view displays the routine privileges granted to activated roles for the current session, as well as the routine privileges granted to other roles by these roles.
oceanbase.DBA_OB_TRUSTED_ROOT_CERTIFICATE This view displays the list of trusted CA root certificates in the OBServer cluster and their expiration times.
oceanbase.DBA_OB_SENSITIVE_COLUMNS This view displays all columns protected by sensitive rules.
oceanbase.DBA_OB_SENSITIVE_RULES This view displays the definitions and attributes of all sensitive rules.
oceanbase.DBA_OB_SENSITIVE_RULE_PLAINACCESS_USERS This view displays all users or roles with plain-text data access permissions for columns associated with a sensitive rule.

Backup and restore

View name Description
oceanbase.DBA_OB_BACKUP_JOBS This view displays backup jobs in the current tenant.
oceanbase.DBA_OB_BACKUP_JOB_HISTORY This view displays the history of backup jobs in the current tenant.
oceanbase.DBA_OB_BACKUP_TASKS This view displays the history of backup jobs in the current tenant.
oceanbase.DBA_OB_BACKUP_TASK_HISTORY This view displays the history of task-level backup jobs in the current tenant.
oceanbase.DBA_OB_BACKUP_SET_FILES This view displays the status of files in a backup set.
oceanbase.DBA_OB_RESTORE_PROGRESS This view displays the progress of ongoing restore tasks.
oceanbase.DBA_OB_RESTORE_HISTORY This view displays the history of completed restore tasks.
oceanbase.DBA_OB_ARCHIVE_DEST This view displays the archive path configuration.
oceanbase.DBA_OB_BACKUP_STORAGE_INFO This view displays information about the backup destination used for backup and restore in the current tenant.
oceanbase.DBA_OB_BACKUP_STORAGE_INFO_HISTORY This view displays the history of information about the backup destination used for backup and restore in the current tenant.
oceanbase.DBA_OB_BACKUP_DELETE_POLICY This view displays the deletion policy set for expired or automatic cleanup in the current tenant.
oceanbase.DBA_OB_BACKUP_DELETE_JOBS This view displays the progress of tenant-level backup cleanup jobs.
oceanbase.DBA_OB_BACKUP_DELETE_JOB_HISTORY This view displays the history of backup cleanup jobs in the current tenant.
oceanbase.DBA_OB_BACKUP_DELETE_TASKS This view displays information about backup_set/backup_piece cleanup tasks in the current tenant.
oceanbase.DBA_OB_BACKUP_DELETE_TASK_HISTORY This view displays the history of completed backup_set/backup_piece cleanup tasks in the current tenant.
oceanbase.DBA_OB_ARCHIVELOG This view displays the status of log backups on each path.
oceanbase.DBA_OB_ARCHIVELOG_SUMMARY This view displays the status of all log backups, including historical and current ones.
oceanbase.DBA_OB_ARCHIVELOG_PIECE_FILES This view displays the status of pieces in a backup set.
oceanbase.DBA_OB_RECOVER_TABLE_JOBS This view displays information about table-level recovery tasks.
oceanbase.DBA_OB_IMPORT_TABLE_JOBS This view displays information about import tasks.
oceanbase.DBA_OB_IMPORT_TABLE_TASKS This view displays records of table-level import tasks.
oceanbase.DBA_OB_RECOVER_TABLE_JOB_HISTORY This view displays the results of table-level recovery tasks.
oceanbase.DBA_OB_IMPORT_TABLE_JOB_HISTORY This view displays the results of import tasks.
oceanbase.DBA_OB_IMPORT_TABLE_TASK_HISTORY This view displays the history of cross-tenant table-level import tasks.

Views and columns

View name Description
information_schema.COLUMNS Records column information.
information_schema.STATISTICS Records table index information.
information_schema.TABLES Records table information.
information_schema.VIEWS Records view information.
information_schema.VIEW_TABLE_USAGE Displays information about tables and views used in view definitions.
oceanbase.DBA_OB_TABLEGROUP_TABLES Displays the association between TABLEGROUP and TABLE. Tables not in a TABLEGROUP are not displayed.
oceanbase.DBA_PART_KEY_COLUMNS Displays columns in the partitioning keys of all partitioning objects in the database.
oceanbase.DBA_SUBPART_KEY_COLUMNS Displays columns in the subpartitioning keys of all partitioning objects in the database.
oceanbase.DBA_OB_TABLE_LOCATIONS Displays the location of a table or partition, including system tables, user tables, and index tables.
oceanbase.DBA_OB_TABLE_SPACE_USAGE Displays the size of all user tables (based on the leader replica in a multi-replica environment) in the current tenant.
information_schema.TABLESPACES Information about tablespaces.

Note

This view is provided only for MySQL 5.7 compatibility. You can query only the table structure.

Triggers

View name Description
information_schema.TRIGGERS Displays the CREATE TRIGGER statement used to create a trigger.

Storage

View name Description
mysql.proc Displays information about stored procedures.
mysql.func Not provided.
information_schema.ENGINES Records information about storage engines.
information_schema.PARAMETERS Displays information about parameters and return values of stored procedures.
information_schema.ROUTINES Displays information about stored procedures.

Load balancing

View name Description
oceanbase.DBA_OB_OBJECT_BALANCE_WEIGHT This view displays all partitions with special weights in the current user tenant.
oceanbase.DBA_OB_TRANSFER_PARTITION_TASKS This view displays the Transfer Partition tasks being processed in the current tenant.
oceanbase.DBA_OB_TRANSFER_PARTITION_TASK_HISTORY This view displays the history of Transfer Partition tasks executed in the current tenant.

Partition

View name Description
information_schema.PARTITIONS This view records partition information.
oceanbase.DBA_IND_PARTITIONS This view displays the primary partitions of indexes.
oceanbase.DBA_OB_DYNAMIC_PARTITION_TABLES This view displays the dynamic partition table information in the current tenant.
oceanbase.DBA_PART_INDEXES This view displays the partition information of all partition indexes.
oceanbase.DBA_PART_TABLES This view displays the partition information of user tables.
oceanbase.DBA_TAB_PARTITIONS This view displays the multi-level partition information, partition storage parameters, and partition statistics of partitions accessible to the current user.
oceanbase.DBA_TAB_SUBPARTITIONS This view displays the subpartition name, table name, partition name, storage attributes, and statistics generated by the DBMS_STATS package.
oceanbase.DBA_SUBPARTITION_TEMPLATES This view displays the description information of all subpartition templates.
oceanbase.DBA_IND_SUBPARTITIONS This view displays the information of all index subpartitions in the database.
oceanbase.DBA_OB_TABLEGROUP_PARTITIONS This view displays the primary partition information of the partitioned table group.
oceanbase.DBA_OB_TABLEGROUP_SUBPARTITIONS This view displays the secondary partition information of the partitioned table group.
oceanbase.DBA_OB_TABLEGROUPS This view displays the metadata of the table group, mainly the partition information of the table group.

Replica log related

View name Description
oceanbase.DBA_OB_CS_REPLICA_STATS This view displays the progress of converting tablets to columnar storage in the log stream of C replicas on all OBServer nodes of the current tenant.
oceanbase.DBA_OB_TABLET_REPLICAS This view displays all tablet replicas of the current tenant. Each tablet replica is uniquely identified by the joint key: <TABLET_ID, SVR_IP, SVR_PORT, LS_ID>.
oceanbase.DBA_OB_TABLET_TO_LS This view displays all tablets of the current tenant and the log stream information to which each tablet belongs.
oceanbase.DBA_OB_LS_LOCATIONS This view displays the distribution of log stream (LS) replicas of the current tenant.

Shared storage related

View name Description
DBA_OB_SS_SPACE_USAGE This view records the storage space usage on the object storage of the current tenant.

Help command related

View name Description
mysql.help_topic This view generates the Help command in conjunction with the three tables mysql.help_category, mysql.help_relation, and mysql.help_keyword.
mysql.help_category This view generates the Help command in conjunction with the three tables mysql.help_relation, mysql.help_topic, and mysql.help_keyword.
mysql.help_keyword This view generates the Help command in conjunction with the three tables mysql.help_relation, mysql.help_topic, and mysql.help_category.
mysql.help_relation This view generates the Help command in conjunction with the three tables mysql.help_category, mysql.help_topic, and mysql.help_keyword.

I/O performance related

View name Description
DBA_OB_STORAGE_IO_USAGE This view displays the I/O operations on the object storage and cloud disks of the current tenant.

InnoDB storage engine

View name Description
information_schema.INNODB_LOCK_WAITS This view displays information about the locks that are being waited on when lock conflicts occur.

Note

This view is available starting with MySQL 5.7. The related features are not supported, and you can only query the table structure.

information_schema.INNODB_LOCKS This view displays information about all current locks (waiting and held).

Note

This view is available starting with MySQL 5.7. The related features are not supported, and you can only query the table structure.

information_schema.NDB_TRANSID_MYSQL_CONNECTION_MAP This view displays the mapping information between NDB transactions, NDB transaction coordinators, and MySQL servers connected as API nodes to the NDB cluster.

Note

This view is available starting with MySQL 5.7. The related features are not supported, and you can only query the table structure.

information_schema.INNODB_TRX This view displays information about active transactions.

Note

This view is available starting with MySQL 5.7. The related features are not supported, and you can only query the table structure.

information_schema.INNODB_BUFFER_PAGE This view displays information about all cached pages in the buffer pool.

Note

This view is available starting with MySQL 5.7. The related features are not supported, and you can only query the table structure.

information_schema.INNODB_BUFFER_PAGE_LRU This view displays the LRU-sorted information about pages in the InnoDB buffer pool.

Note

This view is available starting with MySQL 5.7. The related features are not supported, and you can only query the table structure.

information_schema.INNODB_BUFFER_POOL_STATS This view displays statistics about the InnoDB buffer pool.

Note

This view is available starting with MySQL 5.7. The related features are not supported, and you can only query the table structure.

information_schema.INNODB_CMP This view displays the operation status information related to compressing InnoDB tables.

Note

This view is available starting with MySQL 5.7. The related features are not supported, and you can only query the table structure.

information_schema.INNODB_CMP_PER_INDEX This view displays the operation information related to compressing InnoDB tables and indexes.

Note

This view is available starting with MySQL 5.7. The related features are not supported, and you can only query the table structure.

information_schema.INNODB_CMP_PER_INDEX_RESET This view displays the reset time information related to operations on compressed InnoDB tables and indexes.

Note

This view is available starting with MySQL 5.7. The related features are not supported, and you can only query the table structure.

information_schema.INNODB_CMP_RESET This view displays the operation status related to compressing InnoDB tables.

Note

This view is available starting with MySQL 5.7. The related features are not supported, and you can only query the table structure.

information_schema.INNODB_CMPMEM This view displays the status of compressed pages in the InnoDB buffer pool.

Note

This view is available starting with MySQL 5.7. The related features are not supported, and you can only query the table structure.

information_schema.INNODB_CMPMEM_RESET This view displays the reset time status of compressed pages in the InnoDB buffer pool.

Note

This view is available starting with MySQL 5.7. The related features are not supported, and you can only query the table structure.

information_schema.INNODB_SYS_DATAFILES This view displays the data file path information for each table and general tablespace in the InnoDB file.

Note

This view is available starting with MySQL 5.7. The related features are not supported, and you can only query the table structure.

information_schema.INNODB_SYS_INDEXES This view displays the InnoDB index metadata information.

Note

This view is available starting with MySQL 5.7. The related features are not supported, and you can only query the table structure.

information_schema.INNODB_SYS_TABLES This view displays the InnoDB table metadata information.

Note

This view is available starting with MySQL 5.7. The related features are not supported, and you can only query the table structure.

information_schema.INNODB_SYS_TABLESPACES This view displays the metadata of InnoDB table files and general tablespaces.

Note

This view is available starting with MySQL 5.7. The related features are not supported, and you can only query the table structure.

information_schema.INNODB_SYS_TABLESTATS This view displays the low-level status information of InnoDB tables.

Note

This view is available starting with MySQL 5.7. The related features are not supported, and you can only query the table structure.

information_schema.INNODB_SYS_VIRTUAL This view displays the metadata of InnoDB virtual generated columns.

Note

This view is available starting with MySQL 5.7. The related features are not supported, and you can only query the table structure.

information_schema.INNODB_TEMP_TABLE_INFO This view displays information about active InnoDB temporary tables created by users.

Note

This view is available starting with MySQL 5.7.

information_schema.INNODB_METRICS This view displays InnoDB performance information.

Note

This view is available starting with MySQL 5.7.

Spatial

View name Description
information_schema.ST_GEOMETRY_COLUMNS This view displays tables that contain spatial data columns and spatial data types.
information_schema.ST_SPATIAL_REFERENCE_SYSTEMS This view displays the spatial reference coordinate systems supported by the system.

OBKV

View name Description
oceanbase.DBA_OB_KV_TTL_TASKS This view displays the TTL tasks that are being executed in the current tenant.
oceanbase.DBA_OB_KV_TTL_TASK_HISTORY This view displays the historical TTL tasks in the current tenant.
V$OB_KV_CLIENT_INFO This view displays the configuration parameters of the client connections for the OBKV tenant on the current node.
GV$OB_KV_CLIENT_INFO This view displays the configuration parameters of the client connections for the OBKV tenant.
oceanbase.DBA_OB_KV_REDIS_TABLE This view stores the specific commands of various data structures in the Redis tenant and the corresponding storage table names.

Outline

View name Description
oceanbase.DBA_OB_OUTLINES This view displays the execution plan outlines of the current tenant.
oceanbase.DBA_OB_CONCURRENT_LIMIT_SQL This view displays the outline information of the throttling rules of the current tenant.
oceanbase.DBA_OB_OUTLINE_CONCURRENT_HISTORY This view displays the execution plan and throttling rule outline history information of the current tenant.
DBA_OB_FORMAT_OUTLINES This view records the detailed information of the current tenant's format outline.

Full-text index

View name Description
information_schema.INNODB_FT_BEING_DELETED This view displays the information of the full-text indexes that are being deleted.

Note

This view is for compatibility with MySQL 5.7. The related features are not supported, and only the table structure can be queried.

information_schema.INNODB_FT_CONFIG This view displays the configuration information of the InnoDB full-text search engine.

Note

This view is for compatibility with MySQL 5.7. The related features are not supported, and only the table structure can be queried.

information_schema.INNODB_FT_DELETED This view displays the information of the full-text indexes that have been marked for deletion.

Note

This view is for compatibility with MySQL 5.7. The related features are not supported, and only the table structure can be queried.

information_schema.INNODB_FT_INDEX_CACHE This view displays the cache status information of the InnoDB full-text indexes.

Note

This view is for compatibility with MySQL 5.7. The related features are not supported, and only the table structure can be queried.

information_schema.INNODB_SYS_FIELDS This view displays the metadata information of the key columns (fields) of the InnoDB indexes, which is equivalent to the information in the SYS_FIELDS table of the InnoDB data dictionary.

Note

This view is for compatibility with MySQL 5.7. The related features are not supported, and only the table structure can be queried.

Disaster recovery

View Purpose
DBA_OB_SYNC_STANDBY_DEST This view displays the information about the strong synchronization downstream of the current tenant.

Task scheduling

View name Description
oceanbase.DBA_SCHEDULER_JOBS This view displays the information of all scheduler jobs in the database.
oceanbase.DBA_SCHEDULER_RUNNING_JOBS Displays all running jobs in the current tenant.

Event history monitoring

View name Description
information_schema.events This view records the information of all events.

Time zone-related

View name Description
mysql.time_zone This view displays information related to time zones (SYSTEM_VIEW).
mysql.time_zone_name This view records the names of time zones (SYSTEM_VIEW).
mysql.time_zone_transition mysql.time_zone_transition is a system view that records information about time zone transitions.
mysql.time_zone_transition_type This view records the types of time zone transitions (SYSTEM_VIEW).

Basic database information-related

View name Description
information_schema.GLOBAL_STATUS This view records the global status information of OceanBase Database.
information_schema.GLOBAL_VARIABLES This view records global variables.
information_schema.SCHEMATA This view records database metadata.
oceanbase.DBA_OB_DATABASES This view displays the metadata of databases in a tenant.

Audit-related

View name Description
mysql.audit_log_filter This view displays the definitions of audit filters.
mysql.audit_log_user This view displays the mapping between audit filters and users.

SPM-related

View name Description
oceanbase.DBA_SQL_PLAN_BASELINES This view displays the plan baselines of SQL statements in SPM.
oceanbase.DBA_SQL_MANAGEMENT_CONFIG This view displays the configuration parameters in SPM.
oceanbase.DBA_OB_SPM_EVO_RESULT This view displays the plan evolution information of SPM in a tenant.

Session-related

View name Description
information_schema.SESSION_STATUS This view records the status information of a session, such as the number of active connections and the database uptime.
information_schema.SESSION_VARIABLES This view records the variable information of a session.

Statistics and histogram related

View name Description
oceanbase.DBA_TAB_STATISTICS This view displays the optimizer statistics of all tables in the database.
oceanbase.DBA_TAB_COL_STATISTICS This view displays the column statistics and histogram information of all tables in the database.
oceanbase.DBA_PART_COL_STATISTICS This view displays the column statistics and histogram information of all partitioned tables in the database.
oceanbase.DBA_SUBPART_COL_STATISTICS This view displays the column statistics and histogram information of all subpartitioned tables in the database.
oceanbase.DBA_TAB_HISTOGRAMS This view displays the histograms of all columns in all tables in the database.
oceanbase.DBA_PART_HISTOGRAMS This view displays the histogram data (endpoints of each histogram) of all partitioned tables in the database.
oceanbase.DBA_SUBPART_HISTOGRAMS This view displays the histogram data (endpoints of each histogram) of all subpartitioned tables in the database.
oceanbase.DBA_TAB_STATS_HISTORY This view displays the table statistics history of all tables in the database.
oceanbase.DBA_IND_STATISTICS This view displays the optimizer statistics of all indexes in the database.
oceanbase.DBA_TAB_MODIFICATIONS This view displays the cumulative modification information of tables in the database.
information_schema.QUERY_RESPONSE_TIME This view displays the histogram data (such as response time) for Prometheus monitoring.
oceanbase.DBA_OB_TABLE_OPT_STAT_GATHER_HISTORY This view queries the historical collection execution status of tables.
oceanbase.CDB_OB_AUX_STATISTICS This view displays the auxiliary statistics of all tenants.
information_schema.OPTIMIZER_TRACE This view is only for compatibility with MySQL 5.7. The related features are not supported, and only the table structure can be queried.

Materialized view views

View Purpose
oceanbase.DBA_MVIEW_DEPS This view displays the dependencies of materialized views in the current tenant.
oceanbase.DBA_MVIEW_LOGS This view displays the logs of materialized views.
oceanbase.DBA_MVIEW_RUNNING_JOBS This view displays the running materialized view-related tasks, including refresh tasks and MLOG cleanup tasks, in the current tenant.
oceanbase.DBA_MVIEWS This view displays the information of all materialized views.
oceanbase.DBA_MVREF_CHANGE_STATS This view displays the statistics related to materialized view refreshes.
oceanbase.DBA_MVREF_RUN_STATS This view displays the information about each refresh run of a materialized view. Each refresh run is identified by a REFRESH_ID.
oceanbase.DBA_MVREF_STATS This view displays the basic timing statistics of materialized view refreshes.
oceanbase.DBA_MVREF_STATS_PARAMS This view displays the refresh statistics properties associated with each materialized view.
oceanbase.DBA_MVREF_STATS_SYS_DEFAULTS This view displays the system-wide default values of the statistics properties of materialized view refreshes.
oceanbase.DBA_MVREF_STMT_STATS This view displays the information about the refresh statements.

WR related

View name Description
oceanbase.DBA_WR_SNAPSHOT This view displays the SNAPSHOT information of the current tenant.
oceanbase.DBA_WR_ACTIVE_SESSION_HISTORY This view displays the ASH data of the current tenant after persistence.
oceanbase.DBA_WR_STATNAME This view displays the names of the system statistics of the current tenant.
oceanbase.DBA_WR_SYSSTAT This view displays the details of the system statistics of the current tenant.
oceanbase.DBA_WR_CONTROL This view displays the configuration information related to WR.
oceanbase.DBA_WR_SYSTEM_EVENT This view displays the tenant-level wait event information of the current tenant after persistence.
oceanbase.DBA_WR_EVENT_NAME This view displays the tenant-level wait event names of the current tenant after persistence.
oceanbase.DBA_WR_SQLTEXT This view displays the SQL texts collected by WR for the current tenant.
oceanbase.DBA_WR_SQLSTAT This view displays the basic performance statistics of the SQL statements executed by the current tenant. Each SQL statement is represented by a row (i.e., each unique combination of SQL_ID and Plan_Hash is a row).
oceanbase.DBA_WR_SYS_TIME_MODEL This view displays the WR data of the Time Model statistics of the current tenant.
oceanbase.DBA_WR_SQL_PLAN This view displays the GV$OB_SQL_PLAN data collected by WR.

Foreign key related

View name Description
information_schema.INNODB_SYS_FOREIGN This view displays the metadata information of InnoDB foreign keys, which is equivalent to the information in the SYS_FOREIGN table of the InnoDB data dictionary.

Note

This view is only for compatibility with MySQL 5.7. The related features are not supported, and only the table structure can be queried.

information_schema.INNODB_SYS_FOREIGN_COLS This view displays the status information of InnoDB foreign key columns, which is equivalent to the information in the SYS_FOREIGN_COLS table of the InnoDB data dictionary.

Note

This view is only for compatibility with MySQL 5.7. The related features are not supported, and only the table structure can be queried.

Thread related

View name Description
information_schema.PROCESSLIST This view displays the information of running threads.

Constraint related

View name Description
information_schema.CHECK_CONSTRAINTS This view displays the constraint information of tables and columns during the CREATE TABLE operation.
information_schema.KEY_COLUMN_USAGE This view records the constraint information of keys in the Column.
information_schema.REFERENTIAL_CONSTRAINTS This view displays the metadata of foreign key constraints.
information_schema.TABLE_CONSTRAINTS This view describes the table constraint information.

Major compaction

View name Description
oceanbase.DBA_OB_MAJOR_COMPACTION This view displays the global major compaction information of the current tenant.
oceanbase.DBA_OB_ZONE_MAJOR_COMPACTION This view displays the major compaction information of each zone in the current tenant.
oceanbase.DBA_OB_FREEZE_INFO This view displays the version information generated by major freeze.

Resource management

View name Description
oceanbase.DBA_OB_SEQUENCE_OBJECTS This view displays all SEQUENCE objects in the database.
DBA_OB_RSRC_DIRECTIVES This view displays the resource configuration parameters of the current tenant in the Resource Manager.
DBA_OB_RSRC_IO_DIRECTIVES This view displays the IO resource configuration of the current tenant in the Resource Manager.
DBA_RSRC_GROUP_MAPPINGS This view displays the binding relationships between users and resource groups.
DBA_RSRC_CONSUMER_GROUPS This view displays the information of all resource groups in the database.
DBA_RSRC_PLANS This view displays all resource management plans defined by the system.
DBA_RSRC_PLAN_DIRECTIVES This view displays the detailed information of each resource plan directive in the database.

Tenant management

View name Description
oceanbase.DBA_OBJECTS This view displays all database objects in the database. The view definition is consistent with ALL_OBJECTS.
oceanbase.DBA_OB_TENANTS This view displays the basic information of all tenants, including the sys tenant, user-created tenants (user tenants), and the meta tenant. You can use the TENANT_TYPE column to distinguish the types of tenants.
oceanbase.DBA_OB_LICENSE This view displays the license information currently loaded by the user.

Character set

View name Description
information_schema.CHARACTER_SETS This view records the character set information of OceanBase Database.
information_schema.COLLATIONS This view records the collation method information of each character set.
information_schema.COLLATION_CHARACTER_SET_APPLICABILITY This view records the correspondence between Character and Collation.

Overview of performance views

ASH related

View name Purpose
GV$ACTIVE_SESSION_HISTORY This view displays the active session history.
V$ACTIVE_SESSION_HISTORY This view displays the active session history.
V$OB_ACTIVE_SESSION_HISTORY This view displays the active session history of the current OBServer node in the current tenant.
GV$OB_ACTIVE_SESSION_HISTORY This view displays the active session history of all OBServer nodes in the current tenant.

Catalog related

View name Purpose
GV$OB_HMS_CLIENT_POOL_STAT This view displays the usage of the HMS Catalog client in the current tenant.
V$OB_HMS_CLIENT_POOL_STAT This view displays the usage of the HMS Catalog client in the current tenant.

DTL related

View name Purpose
GV$OB_DTL_INTERM_RESULT_MONITOR This view displays the monitoring information of the DTL intermediate result manager.
V$OB_DTL_INTERM_RESULT_MONITOR This view displays the monitoring information of the DTL intermediate result manager.

Log replica related

View name Purpose
GV$OB_LOG_STAT This view displays the status of Palf.
V$OB_LOG_STAT This view displays the status of Palf.

Partition related

View name Purpose
V$OB_DYNAMIC_PARTITION_TABLES This view displays the dynamic partition table information in the current tenant.

Shared storage

View name Description
V$OB_SS_SSTABLES This view displays information about SSTables on shared storage for the current tenant.
GV$OB_SS_LOCAL_CACHE This view displays metrics about various types of cached data in the local cache of each OBServer node for all tenants in shared storage mode.
V$OB_SS_LOCAL_CACHE This view displays metrics about various types of cached data in the local cache of the current OBServer node for all tenants in shared storage mode.
GV$OB_STORAGE_CACHE_TASKS This view displays information about cache tasks on all OBServer nodes for the current tenant.
V$OB_STORAGE_CACHE_TASKS This view displays information about cache tasks on the current OBServer node for the current tenant.
GV$OB_TABLET_LOCAL_CACHE This view displays overall cache information on all OBServer nodes for the current tenant.
V$OB_TABLET_LOCAL_CACHE This view displays overall cache information on the current OBServer node for the current tenant.

I/O

View name Description
GV$OB_SHARED_STORAGE_QUOTA This view displays information about I/O access resources on all OBServer nodes.
V$OB_SHARED_STORAGE_QUOTA This view displays information about I/O access resources on the current OBServer node.

Encrypted tables

View name Description
V$OB_ENCRYPTED_TABLES This view displays the encryption status of tables with encryption enabled.
V$ENCRYPTED_TABLESPACES This view displays the encryption status of tablespaces with encryption enabled.

Memory-related

View name Description
GV$OB_MEMORY This view displays the memory statistics at the tenant level.
V$OB_MEMORY This view displays the memory statistics at the tenant level.
GV$OB_MEMSTORE This view displays the memory usage of MemTables for all tenants on all servers.
V$OB_MEMSTORE This view displays the MemStore statistics at the tenant level.
GV$OB_MEMSTORE_INFO This view displays the details of MemTables for all partitions of all tenants on all servers.
V$OB_MEMSTORE_INFO This view displays the details of MemTables for all partitions of all tenants on all servers.
GV$OB_SSTABLES This view displays the SSTable information of a tenant.
V$OB_SSTABLES This view displays the SSTable information of a tenant.
GV$OB_TENANT_MEMORY This view displays the memory usage of each tenant in the cluster.
V$OB_TENANT_MEMORY This view displays the memory usage of each tenant in the current observer process.

OBKV-related

View name Description
GV$OB_KVCACHE This view displays the KVCACHE information on each OBServer node.
V$OB_KVCACHE This view displays the KVCACHE information on each OBServer node.

Event-related

View name Description
GV$OB_PROCESSLIST This view displays session information on all OBServer nodes of the tenant.
GV$OB_TRANSACTION_PARTICIPANTS This view displays transaction participant information on all OBServer nodes.
GV$SESSION_EVENT This view displays session-level waiting events on all OBServer nodes in the cluster.
GV$SESSION_WAIT This view displays information about the current or previous waiting events of all sessions on all servers, including the event name and waiting time.
GV$SESSION_WAIT_HISTORY This view displays information about the most recent 10 waiting events of all sessions on all servers.
GV$SYSTEM_EVENT This view displays waiting events at the tenant level in the cluster.
GV$SESSTAT This view displays session-level statistical events on all OBServer nodes.
GV$SYSSTAT This view displays tenant-level statistical events on all servers.
V$OB_PROCESSLIST This view displays session information on the current OBServer node.
V$STATNAME This view displays the definitions of all statistical events.
V$EVENT_NAME This view displays the definitions of all statistical events on the current OBServer node.
V$SESSION_WAIT This view displays the details of the current waiting events of each session. Each waiting event has three parameters, and each parameter records a corresponding value.
V$SESSION_WAIT_HISTORY This view displays the details of the current waiting events of each session and the most recent 10 waiting events.
V$SESSTAT This view displays the statistical events at the session level.
V$SYSSTAT This view displays tenant-level statistical events on the current server.
V$SYSTEM_EVENT This view displays tenant-level waiting event statistics.
GV$SESSION_LONGOPS This view displays the execution status and progress of DDL operations in the cluster.
V$SESSION_LONGOPS This view displays the execution status and progress of DDL operations on the current OBServer node.

Basic database information

View name Description
GV$OB_PARAMETERS This view displays the parameter information on all OBServer nodes of the tenant.
GV$OB_SERVER_SCHEMA_INFO This view displays the schema information on all servers.
GV$OB_UNITS This view displays the unit information on the OBServer node of the tenant. The system tenant can view the unit information on all OBServer nodes in the cluster.
V$OB_PARAMETERS This view displays the parameter information on the OBServer node.
V$OB_SERVER_SCHEMA_INFO This view displays the schema information on all servers.
V$OB_UNITS This view displays the unit information on the OBServer node.
GV$DML_STATS This view displays the DML information in the current user table.
V$DML_STATS This view displays the DML information in the current user table.
V$OB_COMPATIBILITY_CONTROL This view displays the features that can be controlled for compatibility with the OceanBase Database release version.
GV$OB_KV_CONNECTIONS This view displays the statistics of OBKV connections on all servers.
V$OB_KV_CONNECTIONS This view displays the statistics of OBKV connections on the current server.

Locks

View name Description
GV$LATCH This view displays the latch information on all OBServer nodes in the cluster.
V$LATCH This view displays the latch information on all OBServer nodes in the cluster.

SQL related

View name Description
GV$OB_PLAN_CACHE_STAT This view displays the overall status of each plan cache on all OBServer nodes for the current tenant.
V$OB_PLAN_CACHE_STAT This view records the overall status of each plan cache on all servers for the current tenant.
GV$OB_PLAN_CACHE_PLAN_STAT This view records the status of each cached object in the plan cache on all servers for the current tenant.
V$OB_PLAN_CACHE_PLAN_STAT This view records the status of each cached object in the plan cache on the current server for the current tenant.
GV$OB_PLAN_CACHE_PLAN_EXPLAIN This view displays the physical execution plans cached in the plan cache on all servers.
V$OB_PLAN_CACHE_PLAN_EXPLAIN This view displays the physical execution plans cached in the plan cache on the current server.
GV$OB_PS_STAT This view monitors the overall status of the PS cache, including hit rate, memory usage, and the number of cached items.
V$OB_PS_STAT This view monitors the overall status of the PS cache, including hit rate, memory usage, and the number of cached items.
GV$OB_PS_ITEM_INFO This view provides monitoring functionality for prepared statements, containing basic information about all prepared statements in the PS cache.
V$OB_PS_ITEM_INFO This view provides monitoring functionality for prepared statements, containing basic information about all prepared statements in the PS cache.
GV$OB_SESSION_PS_INFO This view displays the PS information opened by all sessions for the current tenant.
V$OB_SESSION_PS_INFO This view displays the PS information opened by all sessions for the current OBServer tenant.
GV$OB_PX_TARGET_MONITOR This view displays the usage of PX threads on all OBServer nodes.
V$OB_PX_TARGET_MONITOR This view displays the usage of PX threads on the OBServer node.
GV$OB_SQL_AUDIT This view displays the source and execution status of each SQL request on all servers.
V$OB_SQL_AUDIT This view displays the source and execution status of each SQL request on the current server.
GV$SQL_PLAN_MONITOR This view displays the plan-level statistics of slow queries on all OBServer nodes. Each slow query has a corresponding statistic, and the trace information of the plan is recorded.
V$SQL_PLAN_MONITOR This view displays the operation-level statistics of slow queries. Each operation has a corresponding statistic.
V$SQL_MONITOR_STATNAME This view displays the meaning of the numbers in the OTHERSTAT_X_ID column of GV$SQL_PLAN_MONITOR.
GV$OB_FLT_TRACE_CONFIG This view displays the diagnostic information of full-link tracing.
GV$OB_PLAN_CACHE_REFERENCE_INFO This view displays the plan cache reference information of all tenants on all OBServer nodes.
V$OB_PLAN_CACHE_REFERENCE_INFO This view displays the plan cache reference information of all tenants on the current OBServer node.

Workarea-related views

View name Description
GV$SQL_WORKAREA This view displays the workarea statistics for all operators that were executed under SQL automatic memory management.
GV$SQL_WORKAREA_ACTIVE This view displays the workarea information for the currently active operators.
GV$SQL_WORKAREA_HISTOGRAM This view displays the statistics for all workarea executions, such as the number of times full in-memory processing occurred between 1 MB and 2 MB, and the number of one-pass operations.
GV$OB_SQL_WORKAREA_MEMORY_INFO This view queries some overall information about the SQL workarea, such as the maximum available memory, current used memory, and current held memory.
V$SQL_WORKAREA This view displays the workarea statistics for all operators that were executed under SQL automatic memory management.
V$SQL_WORKAREA_ACTIVE This view displays the workarea information for the currently active operators.
V$SQL_WORKAREA_HISTOGRAM This view displays the statistics for all workarea executions, such as the number of times full in-memory processing occurred between 1 MB and 2 MB, and the number of one-pass operations.
V$OB_SQL_WORKAREA_MEMORY_INFO This view queries some overall information about the SQL workarea, including the maximum available memory, current used memory, and current held memory.

WR-related views

View name Description
GV$OB_QUERY_RESPONSE_TIME_HISTOGRAM This view queries the histogram information of the query execution time for all nodes in the current tenant.
GV$OB_RES_MGR_SYSSTAT This view displays the statistics of resource groups in all OBServer nodes of the current tenant.
GV$OB_SQLSTAT This view displays the basic performance statistics of SQL statements in the cluster. Each SQL statement is represented by a row (each unique combination of SQL_ID and Plan_Hash is a row).
V$OB_SQLSTAT This view displays the basic performance statistics of SQL statements on the current node. Each SQL statement is represented by a row (each unique combination of SQL_ID and Plan_Hash is a row).
GV$OB_SESS_TIME_MODEL This view displays the session-level Time Model statistics in the cluster.
V$OB_SESS_TIME_MODEL This view displays the session-level Time Model statistics on the current node.
GV$OB_SYS_TIME_MODEL This view displays the tenant-level Time Model statistics in the cluster.
V$OB_SYS_TIME_MODEL This view displays the tenant-level Time Model statistics on the current node.
V$OB_RES_MGR_SYSSTAT This view displays the statistics of resource groups in the current OBServer node of the current tenant.

Network-related

View Name Description
GV$OB_RPC_OUTGOING This view displays the statistics of RPC packets sent by all OBServer nodes.
GV$OB_RPC_INCOMING This view displays the statistics of RPC packets received by all OBServer nodes.
V$OB_RPC_OUTGOING This view displays the statistics of RPC packets sent by different tenants on each OBServer node.
V$OB_RPC_INCOMING This view displays the statistics of RPC packets received by different tenants on each OBServer node.

Thread-related

View Name Description
GV$OB_PX_WORKER_STAT This view displays the execution information of each thread in parallel execution scenarios.
V$OB_PX_WORKER_STAT This view displays the execution information of each thread in parallel execution scenarios.

Views related to major compactions

View Purpose
GV$OB_MERGE_INFO This view displays the statistics of major compactions completed in the OceanBase cluster.
V$OB_MERGE_INFO This view displays the statistics of major compactions completed in the OceanBase cluster.
GV$OB_COMPACTION_PROGRESS This view displays the OBServer-level major compaction progress of a tenant.
GV$OB_COMPACTION_SUGGESTIONS This view displays the suggestions for major compactions.
GV$OB_COMPACTION_DIAGNOSE_INFO This view displays the diagnostic information of major compactions.
GV$OB_TABLET_COMPACTION_HISTORY This view displays the historical information of tablet-level major compactions.
GV$OB_TABLET_COMPACTION_PROGRESS This view displays the progress of tablet-level major compactions.
V$OB_COMPACTION_PROGRESS This view displays the server-level major compaction progress of a tenant.
V$OB_COMPACTION_SUGGESTIONS This view displays the suggestions for major compactions.
V$OB_COMPACTION_DIAGNOSE_INFO This view displays the diagnostic information of major compactions.
V$OB_TABLET_COMPACTION_HISTORY This view displays the historical information of tablet-level major compactions.
V$OB_TABLET_COMPACTION_PROGRESS This view displays the progress of tablet-level major compactions.
V$OB_TRANSACTION_PARTICIPANTS This view displays the information about transaction participants on all OBServer nodes.

Resource management

View name Purpose
GV$OB_GROUP_IO_STAT This view displays the real-time status of each resource group on all OBServer nodes in the current tenant.
GV$OB_FUNCTION_IO_STAT This view displays the I/O statistics at the Function level on all OBServer nodes in the current tenant.
V$OB_GROUP_IO_STAT This view displays the real-time status of each resource group on the current OBServer node in the current tenant.
V$OB_FUNCTION_IO_STAT This view displays the I/O statistics at the Function level on the current OBServer node in the current tenant.
GV$OB_CGROUP_CONFIG This view allows you to quickly query the cgroup configurations of all OBServer nodes.
V$OB_CGROUP_CONFIG This view allows you to quickly query the cgroup configurations of the current OBServer node.

Views in an Oracle tenant

Dictionary views

Applicability

This topic applies only to OceanBase Database Enterprise Edition.

Security privileges

View Description
ALL_USERS This view displays all database users visible to the current user.
DBA_USERS This view displays all database users.
USER_USERS This view displays information about the current user.
ALL_COL_PRIVS This view displays column object privileges granted to the current user as the owner, grantor, or grantee. Column object privileges granted to enabled roles or PUBLIC are also displayed.
ALL_TAB_PRIVS
  • This view displays object privileges granted to the current user as the owner, grantor, or grantee.
  • This view displays object privileges granted to activated roles or the PUBLIC role.
DBA_COL_PRIVS This view displays all column object grants in the database.
DBA_SYS_PRIVS This view displays system privileges granted to users and roles.
DBA_TAB_PRIVS This view displays all object grants in the database.
USER_TAB_PRIVS This view displays object privileges owned by the current user.
USER_COL_PRIVS This view displays column object privileges granted to the current user as the owner, grantor, or grantee.
USER_ROLE_PRIVS This view displays roles granted to the current user.
USER_SYS_PRIVS This view displays system privileges granted to the current user.
ROLE_TAB_PRIVS This view displays table privileges granted to roles. Only information about roles accessible to users is provided.
ROLE_SYS_PRIVS This view displays system privileges granted to roles.
ROLE_ROLE_PRIVS This view displays roles granted to other roles. Only information about roles accessible to users is provided.
DBA_ROLE_PRIVS This view displays roles granted to all users and roles in the database.
DBA_ROLES This view displays all roles existing in the database.
ALL_DIRECTORIES This view displays all directories accessible to the current user.
DBA_DIRECTORIES This view displays all directories accessible to the current user.
DBA_OB_DATABASE_PRIVILEGE This view displays the privileges that the current tenant has over the current user.
DBMS_LOCK_ALLOCATED This view displays information about DBMS_LOCK that has been applied but has not expired.
PROXY_USERS This view displays proxy information between users.
DBA_OB_USER_DEFINED_RULES This view records the rules for rewriting SQL statements in the current tenant.
DBA_OB_SENSITIVE_COLUMNS This view displays all columns protected by sensitive rules.
DBA_OB_SENSITIVE_RULES This view displays the definitions and attributes of all sensitive rules.
DBA_OB_SENSITIVE_RULE_PLAINACCESS_USERS This view displays all users or roles with plaintext data access permissions for columns associated with a sensitive rule.

Security policy-related

View Description
ALL_POLICIES This view displays the access control policies that the current user can access. When you apply access control to a table, you can create multiple policies for the table.
ALL_POLICY_CONTEXTS This view displays the context information of the views that the current user can access. When you access a view, the corresponding policy group is selected based on the context value.
ALL_POLICY_GROUPS This view displays the policy groups of all views that the current user can access. The policy groups are combined with the policy context to apply different policies to different users.
ALL_SEC_RELEVANT_COLS This view displays the columns associated with policies in the tables or views that the current user can access. When a column is associated with a column-level policy, the corresponding policy is applied when the column is accessed.
USER_POLICIES This view displays the access control policies that the current user owns. When you apply access control to a table, you can create multiple policies for the table.
USER_POLICY_CONTEXTS This view displays the context information of the views that the current user owns. When you access a view, the corresponding policy group is selected based on the context value.
USER_POLICY_GROUPS This view displays the policy groups of the views that the current user owns. The policy groups are combined with the policy context to apply different policies to different users.
USER_SEC_RELEVANT_COLS This view displays the columns associated with policies in the tables or views that the current user owns. When a column is associated with a column-level policy, the corresponding policy is applied when the column is accessed.
DBA_POLICIES This view displays the access control policies of all tables or views in the current tenant. When you apply access control to a table, you can create multiple policies for the table.
DBA_POLICY_CONTEXTS This view displays the context information of all views in the current tenant. When you access a view, the corresponding policy group is selected based on the context value.
DBA_POLICY_GROUPS This view displays the policy groups of all views in the current tenant. The policy groups are combined with the policy context to apply different policies to different users.
DBA_SEC_RELEVANT_COLS This view displays the columns associated with policies in the tables or views of the current tenant. When a column is associated with a column-level policy, the corresponding policy is applied when the column is accessed.

Backup and restore

View Name Description
DBA_OB_BACKUP_JOBS This view displays the backup jobs of the current tenant.
DBA_OB_BACKUP_JOB_HISTORY This view displays the history of the backup jobs of the current tenant.
DBA_OB_BACKUP_TASKS This view displays the task-level backup jobs of the current tenant.
DBA_OB_BACKUP_TASK_HISTORY This view displays the history of the task-level backup jobs of the current tenant.
DBA_OB_BACKUP_SET_FILES This view displays the file status of the backup set.
DBA_OB_RESTORE_PROGRESS This view displays the progress of the ongoing restore tasks.
DBA_OB_RESTORE_HISTORY This view displays the history of the completed restore tasks.
DBA_OB_ARCHIVE_DEST This view displays the archive destination configurations.
DBA_OB_BACKUP_STORAGE_INFO This view displays the backup destination information used for backup and restore in the current tenant.
DBA_OB_BACKUP_STORAGE_INFO_HISTORY This view displays the historical backup destination information used for backup and restore in the current tenant.
DBA_OB_BACKUP_DELETE_POLICY This view displays the deletion policy set for expired or automatic deletion in the current tenant.
DBA_OB_BACKUP_DELETE_JOBS This view displays the progress of the tenant-level backup deletion jobs.
DBA_OB_BACKUP_DELETE_JOB_HISTORY This view displays the history of the backup deletion jobs in the current tenant.
DBA_OB_BACKUP_DELETE_TASKS This view displays the information about the backup_set/backup_piece deletion tasks being executed in the current tenant.
DBA_OB_BACKUP_DELETE_TASK_HISTORY This view displays the history of the completed backup_set/backup_piece deletion tasks in the current tenant.
DBA_OB_ARCHIVELOG This view displays the log backup status on each path.
DBA_OB_ARCHIVELOG_SUMMARY This view displays the status of all log backups in the history and current.
DBA_OB_ARCHIVELOG_PIECE_FILES This view displays the status of the pieces in the backup set.
DBA_OB_BACKUP_PARAMETER This view displays the backup parameters.
DBA_OB_RECOVER_TABLE_JOBS This view displays information about table-level restore tasks.
DBA_OB_IMPORT_TABLE_JOBS This view displays information about import tasks.
DBA_OB_IMPORT_TABLE_TASKS This view displays records of table-level import tasks.
DBA_OB_RECOVER_TABLE_JOB_HISTORY This view displays results of table-level restore tasks.
DBA_OB_IMPORT_TABLE_JOB_HISTORY This view displays results of import tasks.
DBA_OB_IMPORT_TABLE_TASK_HISTORY This view displays the history of cross-tenant table-level import tasks.

Views and tables

View Description
ALL_ALL_TABLES This view displays object tables and relational tables that the current user can access.
ALL_COL_COMMENTS This view displays column comments of views and tables that the current user can access.
ALL_TABLES This view displays all tables that the current user can access.
ALL_TAB_COLS This view displays all columns of tables, views, and clusters that the current user can access.
ALL_TAB_COLUMNS This view displays all columns of tables, views, and clusters that the current user can access.
ALL_TAB_COMMENTS This view displays comments of tables and views that the current user can access.
DBA_COL_COMMENTS This view displays column comments of all views and tables in the database.
DBA_TAB_COMMENTS This view displays comments of all tables and views in the database.
USER_COL_COMMENTS This view displays column comments of views and tables owned by the current user.
USER_TAB_COMMENTS This view displays comments of tables and views owned by the current user.
DBA_OB_TABLEGROUP_TABLES This view displays the association between TABLEGROUP and TABLE. It does not display tables not in a table group.
DBA_TABLES This view displays all tables in the database.
DBA_ALL_TABLES This view displays object tables and relational tables in the database. Its fields are the same as those of ALL_ALL_TABLES.
DBA_TABLESPACES This view displays all tablespaces in the database.
DBA_TAB_COLS This view displays all columns of tables, views, and clusters in the database.
DBA_TAB_COLUMNS This view displays all columns of tables, views, and clusters in the database.
USER_ALL_TABLES This view displays object tables and relational tables that the current user can access. Except for the OWNER field, its fields are the same as those of ALL_ALL_TABLES.
USER_TABLES This view displays all tables owned by the current user.
USER_TABLESPACES This view displays tablespaces that the current user can access. Its columns are the same as those of DBA_TABLESPACES, except for the PLUGGED_IN field.
USER_TAB_COLS This view displays all columns of tables, views, and clusters owned by the current user.
USER_TAB_COLUMNS This view displays all columns of tables, views, and clusters owned by the current user.
ALL_VIEWS This view displays views that the current user can access.
DBA_VIEWS This view displays all views in the database. The columns are the same as those in ALL_VIEWS.
USER_VIEWS This view displays views owned by the current user.
DICTIONARY This view displays the descriptions of data dictionary tables and views.
DICT This view displays the descriptions of data dictionary tables and views.
DBA_OB_TABLE_LOCATIONS This view displays the locations of tables and partitions, including system tables, user tables, index tables, and so on.
DBA_OB_SPATIAL_COLUMNS This view displays the database name, table name, type, and SRS information of spatial index columns.
DBA_OB_TABLE_SPACE_USAGE This view displays the sizes of all user tables in the current tenant (based on the leader replica in a multi-replica environment).

CCL related

View name Description
DBA_OB_CCL_RULES Records all throttling rules for the current user tenant.

Storage object related

View name Description
ALL_ERRORS Displays errors of the current storage objects that the user can access.
DBA_ERRORS Displays errors of the current storage objects in the database.
USER_ERRORS Displays errors of the current storage objects that the user can access.
DBA_SEGMENTS Displays storage information of all segments in the database.
USER_SEGMENTS Displays storage information of segments of the objects in the current user schema.
DBA_OB_SOURCE Displays source code information of all storage objects in the current tenant.
USER_OB_SOURCE Displays source code information of storage objects owned by the current user.
ALL_OB_SOURCE Displays source code information of storage objects accessible to the current user.

Trigger related

View name Description
ALL_TRIGGERS Displays triggers and their descriptions on the tables owned by the current user. If the user has the CREATE ANY TRIGGER privilege, this view describes all triggers in the database.
DBA_TRIGGERS Displays all triggers in the database.
USER_TRIGGERS Displays triggers owned by the current user.
ALL_TRIGGER_ORDERING Displays the ordering of all triggers accessible to the current user.
DBA_TRIGGER_ORDERING Displays the ordering of all triggers in the current tenant.
USER_TRIGGER_ORDERING Displays the ordering of triggers owned by the current user.

Object management related

View name Description
ALL_OBJECTS Displays all database objects accessible to the current user.
DBA_OBJECTS Displays all database objects in the database.
USER_OBJECTS Displays all database objects owned by the current user.
ALL_DEPENDENCIES Displays dependencies between all objects in the database.
DBA_DEPENDENCIES Displays all dependencies between objects in the database.
USER_DEPENDENCIES Displays dependencies between objects in the current user schema.

Object type-related

View name Description
ALL_METHOD_PARAMS This view displays the method parameters of all object types accessible to the current user.
ALL_TYPE_METHODS This view displays the methods of all object types accessible to the current user.
DBA_METHOD_PARAMS This view displays the method parameters of all object types in the database.
DBA_TYPE_METHODS This view displays the methods of all object types in the database.
USER_TYPE_METHODS This view displays the methods of all object types accessible to the current user, except that it does not contain the OWNER column. The column information is the same as that in ALL_TYPE_METHODS.

DBLINK-related

View name Description
ALL_DB_LINKS This view displays all DBLINKs accessible to the current user.
DBA_DB_LINKS This view displays all DBLINKs created in the current tenant.
USER_DB_LINKS This view displays the DBLINKs created by the current user.

Service-related

View name Description
DBA_OB_SERVICES This view displays all SERVICE_NAME information for the current tenant.

Auxiliary statistics-related

View name Description
DBA_OB_AUX_STATISTICS This view displays the auxiliary statistics of each tenant.

Load balancing

View name Description
DBA_OB_OBJECT_BALANCE_WEIGHT This view displays all partitions with special weights in the current user tenant.
DBA_OB_TRANSFER_PARTITION_TASKS This view displays the Transfer Partition tasks being processed in the current tenant.
DBA_OB_TRANSFER_PARTITION_TASK_HISTORY This view displays the history of Transfer Partition tasks executed in the current tenant.
DBA_OB_BALANCE_JOBS This view displays the load balancing jobs being executed in the current tenant. Each tenant can have only one load balancing job (JOB) running at a time. Each load balancing job generates multiple load balancing tasks (TASK) for specific operations.
DBA_OB_BALANCE_JOB_HISTORY This view displays the history of load balancing jobs executed in the current tenant.
DBA_OB_BALANCE_TASKS This view displays the load balancing tasks being executed in the current tenant. Each tenant can have multiple load balancing tasks (TASK) running at a time, and all tasks (TASK) belong to the same load balancing job (JOB).
DBA_OB_BALANCE_TASK_HISTORY This view displays the history of load balancing tasks executed in the current tenant.
DBA_OB_TRANSFER_TASKS This view displays the Transfer tasks being executed in the current tenant.
DBA_OB_TRANSFER_TASK_HISTORY This view displays the history of Transfer tasks executed in the current tenant.

Log replica-related

View name Description
DBA_OB_CS_REPLICA_STATS This view displays the progress of converting tablets to columnar storage in the C replica log stream on each OBServer in the current tenant.
DBA_OB_LS_LOCATIONS This view displays the distribution information of log streams (LS) replicas in the current tenant.
DBA_OB_TABLET_REPLICAS This view displays all tablet replicas in the current tenant. Each tablet replica is uniquely identified by the joint key: <TABLET_ID, SVR_IP, SVR_PORT, LS_ID>.
DBA_OB_TABLET_TO_LS This view displays all tablet lists and the log stream information to which each tablet belongs.
DBA_OB_LS This view displays the status and recovery progress of log streams.
DBA_OB_LOG_RESTORE_SOURCE This view displays the log restore sources in the current tenant.
DBA_OB_LS_HISTORY This view displays the history of log streams in the current tenant.
DBA_OB_LS_LOG_ARCHIVE_PROGRESS This view displays the log stream archiving progress in the current tenant.
DBA_OB_TENANT_FLASHBACK_LOG_SCN This view displays information about each log pruning operation in the current tenant.

Partition-related views

View name Description
ALL_PART_KEY_COLUMNS This view displays columns in the partition keys of all partitioned objects accessible to the current user.
ALL_PART_TABLES This view displays partition information of partitioned tables accessible to the current user.
ALL_SUBPARTITION_TEMPLATES This view displays descriptions of all subpartition templates.
ALL_SUBPART_KEY_COLUMNS This view displays columns in the subpartition keys of all partitioned objects accessible to the current user.
ALL_TAB_PARTITIONS This view displays multi-level partition information, partition storage parameters, and partition statistics of all partitioned tables.
ALL_TAB_SUBPARTITIONS This view displays partition-level partition information, partition storage parameters, and partition statistics generated by the DBMS_STATS package for partitioned tables accessible to the current user.
DBA_OB_DYNAMIC_PARTITION_TABLES This view displays dynamic partition table information of the current tenant.
DBA_PART_INDEXES This view displays partition information of all partitioned indexes.
DBA_PART_KEY_COLUMNS This view displays columns in the partition keys of all partitioned objects in the database.
DBA_PART_TABLES This view displays partition information of partitioned tables accessible to the current user.
DBA_SUBPARTITION_TEMPLATES This view displays descriptions of all subpartition templates.
DBA_SUBPART_KEY_COLUMNS This view displays columns in the subpartition keys of all partitioned objects in the database.
DBA_TAB_PARTITIONS This view displays multi-level partition information, partition storage parameters, and partition statistics of partitioned tables accessible to the current user.
DBA_TAB_SUBPARTITIONS This view displays the subpartition name, table name, name of the partition to which the subpartition belongs, storage attributes, and statistics generated by the DBMS_STATS package.
USER_PART_KEY_COLUMNS This view displays columns in the partition keys of all partitioned objects owned by the current user.
USER_PART_TABLES This view displays partition information of partitioned tables owned by the current user.
USER_SUBPARTITION_TEMPLATES This view displays descriptions of all subpartition templates.
USER_SUBPART_KEY_COLUMNS This view displays columns in the subpartition keys of all partitioned objects owned by the current user.
USER_TAB_SUBPARTITIONS This view displays the subpartition name, table name, name of the partition to which the subpartition belongs, and storage attributes of each subpartition of a table owned by the current user.
USER_TAB_PARTITIONS This view displays multi-level partition information, partition storage parameters, and partition statistics of partitioned tables owned by the current user.
DBA_OB_TABLEGROUPS This view displays the metadata of table groups, mainly the partition information of table groups.
DBA_OB_TABLEGROUP_PARTITIONS This view displays the primary partition information of a partitioned table group.
DBA_OB_TABLEGROUP_SUBPARTITIONS This view displays the secondary partition information of a partitioned table group.

Shared storage

View name Purpose
DBA_OB_SS_SPACE_USAGE This view records the storage space usage on the object storage of the current tenant.

Recycle bin

View name Purpose
DBA_RECYCLEBIN This view displays information about all recycle bins in the database.
USER_RECYCLEBIN This view displays information about the recycle bins owned by the current user. The columns are the same as those in DBA_RECYCLEBIN, except the OWNER column.

Functions and procedures

View name Purpose
ALL_ARGUMENTS This view displays the parameters of the functions and procedures accessible to the current user.
ALL_PROCEDURES This view displays all functions and procedures accessible to the current user and their related attributes.
ALL_SOURCE This view displays the text sources of the stored objects accessible to the current user.
DBA_ARGUMENTS This view displays the parameters of the functions and procedures available in the database. The columns are the same as those in ALL_ARGUMENTS.
DBA_PROCEDURES This view displays all functions and procedures available in the database and their related attributes. The columns are the same as those in ALL_PROCEDURES.
DBA_SOURCE This view displays the text sources of all stored objects in the database. The columns are the same as those in ALL_SOURCE.
USER_ARGUMENTS This view displays the parameters of the functions and procedures owned by the current user. The columns are the same as those in ALL_ARGUMENTS, except the OWNER column.
USER_PROCEDURES This view displays all functions and procedures owned by the current user and their related attributes. The columns are the same as those in ALL_PROCEDURES, except the OWNER column.
USER_SOURCE This view displays the text sources of the stored objects owned by the current user. The columns are the same as those in ALL_SOURCE, except the OWNER column.
DBA_OB_PL_OBJ_CACHE_STATUS This view displays the status information of PL cache objects.
DBA_JOBS This view displays an overview of the submitted tasks.
USER_JOBS This view displays an overview of the submitted tasks.
DBA_JOBS_RUNNING This view displays the running tasks.

I/O performance

View name Purpose
DBA_OB_STORAGE_IO_USAGE This view displays the types of I/O operations on the object storage and cloud disks of the current tenant.

Temporary files

View name Purpose
DBA_OB_TEMP_FILES The DBA_OB_TEMP_FILES view displays information about temporary files.

NLS related

View name Description
NLS_DATABASE_PARAMETERS This view displays the NLS parameters at the database level (OceanBase Database tenant level).
NLS_INSTANCE_PARAMETERS This view displays the NLS parameters at the instance level (tenant level).
NLS_SESSION_PARAMETERS This view displays the NLS parameters at the session level.

Outline related

View name Description
DBA_OB_OUTLINES This view displays the execution plan outline information of the current tenant.
DBA_OB_CONCURRENT_LIMIT_SQL This view displays the outline information of the throttling rules of the current tenant.
DBA_OB_OUTLINE_CONCURRENT_HISTORY This view displays the execution plan and throttling rule outline history information of the current tenant.
DBA_OB_FORMAT_OUTLINES This view records the detailed information of the current tenant's format outline.

PLSQL related

View name Description
ALL_PLSQL_COLL_TYPES ALL_PLSQL_COLL_TYPES view displays the overall information about collection types defined in packages.
ALL_PLSQL_TYPES ALL_PLSQL_TYPES view displays the overall information about package types.
ALL_PLSQL_TYPE_ATTRS ALL_PLSQL_TYPE_ATTRS view displays the overall information about record types defined in packages.
USER_PLSQL_COLL_TYPES USER_PLSQL_COLL_TYPES view displays the overall information about collection types defined in the current user's packages. Only when the package is successfully compiled, the types in the package can be displayed in this view.
USER_PLSQL_TYPES USER_PLSQL_TYPES view displays the overall information about package types in the current user's packages. Only when the package is successfully compiled, the types in the package can be displayed in this view.
USER_PLSQL_TYPE_ATTRS USER_PLSQL_TYPE_ATTRS view displays the overall information about record types defined in the current user's packages. Only when the package is successfully compiled, the types in the package can be displayed in this view.
DBA_PLSQL_COLL_TYPES DBA_PLSQL_COLL_TYPES view displays the overall information about collection types defined in the current tenant's packages. Only when the package is successfully compiled, the types in the package can be displayed in this view.
DBA_PLSQL_TYPES DBA_PLSQL_TYPES view displays the overall information about package types in the current tenant. Only when the package is successfully compiled, the types in the package can be displayed in this view.
DBA_PLSQL_TYPE_ATTRS DBA_PLSQL_TYPE_ATTRS view displays the overall information about record types defined in the current tenant's packages. Only when the package is successfully compiled, the types in the package can be displayed in this view.

PROFILE related

View name Description
ALL_PROFILES Displays all profiles and their limitations.
DBA_PROFILES Displays all profiles and their limitations.
USER_PROFILES Displays all profiles and their limitations.

Disaster recovery related

View name Description
DBA_OB_SYNC_STANDBY_DEST Displays the information about the strong synchronization downstream tenants.
DBA_OB_ACCESS_POINT Displays the list of OBServer nodes in the current tenant. In a physical standby database scenario based on network, it is mainly used to obtain the IP address and SQL port number of the OBServer node in the primary tenant's replica.
DBA_OB_LS_REPLICA_TASKS Displays the ongoing disaster recovery tasks at the Replica level for the current tenant.
DBA_OB_LS_REPLICA_TASK_HISTORY Displays the execution history of all tenants' disaster recovery tasks.

Job scheduling

View Purpose
DBA_SCHEDULER_JOBS This view displays the scheduler job information accessible to the current user.
DBA_SCHEDULER_PROGRAM This view displays the scheduler program information in the database.
DBA_SCHEDULER_JOB_RUN_DETAILS This view displays the scheduler job information in the tenant.
ALL_SCHEDULER_JOB_ARGS This view displays the scheduler job argument information accessible to the current user.
ALL_SCHEDULER_PROGRAM_ARGS This view displays the scheduler program argument information accessible to the current user.
DBA_SCHEDULER_JOB_ARGS This view displays the scheduler job argument information in the database.
USER_SCHEDULER_JOB_ARGS This view displays the scheduler job argument information owned by the current user.
DBA_SCHEDULER_PROGRAM_ARGS This view displays the scheduler program argument information in the database.
USER_SCHEDULER_PROGRAM_ARGS This view displays the scheduler program argument information owned by the current user.
USER_SCHEDULER_JOBS This view displays the scheduler job information accessible to the current user.
ALL_SCHEDULER_WINDOWS This view displays the scheduler window information accessible to the current user.
DBA_SCHEDULER_WINDOWS This view displays the scheduler window information in the current tenant.
DBA_SCHEDULER_RUNNING_JOBS This view displays all jobs running in the current tenant.

Audit-related

View name Purpose
ALL_DEF_AUDIT_OPTS This view displays the audit conditions for objects that are audited by default.
AUDIT_ACTIONS This view displays the Action ID and corresponding name in the audit records.
DBA_AUDIT_EXISTS This view displays the audit tracking entries generated by AUDIT EXISTS and AUDIT NOT EXISTS.
DBA_AUDIT_OBJECT This view displays the audit tracking records for all objects in the database.
DBA_AUDIT_SESSION This view displays the audit tracking records for CONNECT and DISCONNECT.
DBA_AUDIT_STATEMENT This view displays the audit tracking records for GRANT, REVOKE, AUDIT, NOAUDIT, and ALTER SYSTEM statements in the database.
DBA_AUDIT_TRAIL This view displays all audit tracking entries.
DBA_OBJ_AUDIT_OPTS This view displays the detailed audit configurations at the object level.
DBA_STMT_AUDIT_OPTS This view displays the detailed audit configurations at the statement level.
STMT_AUDIT_OPTION_MAP This view displays the Type, corresponding name, and priority for statement-level audit.
USER_AUDIT_OBJECT This view displays the audit tracking records for objects accessible to the current user.
USER_AUDIT_SESSION This view displays the audit tracking records for the current user's connections and disconnections.
USER_AUDIT_STATEMENT This view displays the audit tracking entries for GRANT, REVOKE, AUDIT, NOAUDIT, and ALTER SYSTEM statements issued by the current user.
USER_AUDIT_TRAIL This view displays the standard audit tracking entries related to the current user.

SPM-related

View name Purpose
DBA_SQL_PLAN_BASELINES This view displays the plan baselines for SQL in SPM.
DBA_SQL_MANAGEMENT_CONFIG This view displays the configuration parameters in SPM.
DBA_OB_SPM_EVO_RESULT This view displays the SPM plan evolution information for the current tenant.

Index-related

View Name Description
ALL_INDEXES This view displays the index column information of all tables accessible to the user.
ALL_IND_COLUMNS This view displays the index column information of all tables accessible to the user.
ALL_IND_EXPRESSIONS This view displays the information of function-based indexes accessible to the user in the database.
ALL_IND_PARTITIONS This view displays the information of index partitions accessible to the user in the database.
ALL_IND_SUBPARTITIONS This view displays the information of all index subpartitions accessible to the user in the database.
ALL_PART_INDEXES This view displays the partition information of partition indexes accessible to the current user.
DBA_INDEXES This view displays the index information of all tables in the database.
DBA_IND_COLUMNS This view displays the index column information of all tables in the database.
DBA_IND_EXPRESSIONS This view displays the information of all function-based indexes in the database.
DBA_IND_PARTITIONS This view displays the information of all index partitions in the database.
DBA_IND_SUBPARTITIONS This view displays the information of all index subpartitions in the database.
USER_INDEXES This view displays the index information of all tables owned by the user.
USER_IND_COLUMNS This view displays the index column information of all tables owned by the user.
USER_IND_EXPRESSIONS This view displays the information of function-based indexes owned by the user in the database.
USER_IND_PARTITIONS This view displays the information of index partitions owned by the current user in the database. This view does not contain the INDEX_OWNER column, unlike ALL_IND_PARTITIONS and DBA_IND_PARTITIONS.
USER_IND_SUBPARTITIONS This view displays the information of all index subpartitions owned by the user in the database. This view does not contain the INDEX_OWNER column, unlike DBA_IND_SUBPARTITIONS and ALL_IND_SUBPARTITIONS.
USER_PART_INDEXES This view displays the partition information of partition indexes owned by the current user.
DBA_INDEX_USAGE This view displays the index usage data.

Data dictionary-related

View Name Description
DBA_OB_DATA_DICTIONARY_IN_LOG This view records the location range of the data dictionary in the system log stream to facilitate CDC consumption of the data dictionary.

Basic database information

View name Purpose
DBA_CONTEXT This view displays all context namespaces in the database.
DBA_OB_SYS_VARIABLES This view displays the configurations of system variables in the current tenant, including hidden variables whose names start with "_".

Locks

View name Purpose
DBA_OB_DEADLOCK_EVENT_HISTORY This view displays the history of deadlock events. In a non-root tenant, this view displays the history of deadlock events in the current tenant.

Statistics and histogram related

View name Description
ALL_PART_COL_STATISTICS This view displays column statistics and histogram information for partitions of all partitioned tables accessible to the current user.
ALL_PART_HISTOGRAMS This view displays histogram information for all partitions.
ALL_SUBPART_COL_STATISTICS This view displays column statistics and histogram information for subpartitions of all partitioned tables accessible to the current user.
ALL_SUBPART_HISTOGRAMS This view displays histogram information for all subpartitions.
ALL_TAB_COL_STATISTICS This view displays column statistics and histogram information for all tables accessible to the current user.
ALL_TAB_HISTOGRAMS This view displays histogram information for all tables.
ALL_TAB_STATISTICS This view displays optimizer statistics for all tables accessible to the current user.
DBA_PART_COL_STATISTICS This view displays column statistics and histogram information for partitions of all partitioned tables in the database.
DBA_PART_HISTOGRAMS This view displays histogram information for all partitions.
DBA_SUBPART_COL_STATISTICS This view displays column statistics and histogram information for subpartitions of all partitioned tables in the database.
DBA_SUBPART_HISTOGRAMS This view displays histogram information for all subpartitions.
DBA_TAB_COL_STATISTICS This view displays column statistics and histogram information for all tables in the database.
DBA_TAB_HISTOGRAMS This view displays histogram information for all tables in the database.
DBA_TAB_STATISTICS This view displays optimizer statistics for all tables in the database.
USER_PART_COL_STATISTICS This view displays column statistics and histogram information for partitions of all partitioned tables accessible to the current user.
USER_PART_HISTOGRAMS This view displays histogram information for all partitions accessible to the current user.
USER_SUBPART_COL_STATISTICS This view displays column statistics and histogram information for subpartitions of all partitioned tables accessible to the current user.
USER_SUBPART_HISTOGRAMS This view displays histogram information for all subpartitions accessible to the current user.
USER_TAB_COL_STATISTICS This view displays column statistics and histogram information for all tables accessible to the current user.
USER_TAB_HISTOGRAMS This view displays histogram information for all tables accessible to the current user.
USER_TAB_STATISTICS This view displays the optimizer statistics of all tables in the current user.
ALL_TAB_STATS_HISTORY This view displays the table statistics modification history of all tables accessible to the current user.
DBA_TAB_STATS_HISTORY This view displays the table statistics modification history of all tables in the database.
USER_TAB_STATS_HISTORY This view displays the table statistics modification history of all tables owned by the current user.
ALL_IND_STATISTICS This view displays the optimizer statistics of indexes on all tables accessible to the current user.
DBA_IND_STATISTICS This view displays the optimizer statistics of all indexes in the database.
USER_IND_STATISTICS This view displays the optimizer statistics of indexes on all tables owned by the current user.
ALL_TAB_MODIFICATIONS This view displays the cumulative modification information of all tables accessible to the current user.
DBA_TAB_MODIFICATIONS This view displays the cumulative modification information of all tables in the database.
USER_TAB_MODIFICATIONS This view displays the cumulative modification information of all tables owned by the current user.
DBA_OB_TABLE_OPT_STAT_GATHER_HISTORY This view queries the historical execution of table statistics collection.
DBA_OB_TABLE_STAT_STALE_INFO This view displays the number of DML operations performed on each table since the last statistics collection and whether the current statistics are stale.
DBA_OB_TASK_OPT_STAT_GATHER_HISTORY This view displays the execution of historical collection tasks in the current tenant.

Synonyms

View name Description
ALL_SYNONYMS This view displays all synonyms accessible to the current user.
DBA_SYNONYMS This view displays all synonyms in the database.
USER_SYNONYMS This view displays all synonyms owned by the current user.

External resources

View name Description
ALL_OB_EXTERNAL_TABLE_FILES This view displays the list of files for external tables that the current user has access to.
DBA_OB_EXTERNAL_TABLE_FILES This view displays the list of files for all external tables created in the current tenant.

WR

View name Description
DBA_WR_SNAPSHOT This view displays the SNAPSHOT information of the current tenant.
DBA_WR_ACTIVE_SESSION_HISTORY This view displays the persistent ASH data of the current tenant.
DBA_WR_STATNAME This view displays the names of system statistics of the current tenant.
DBA_WR_SYSSTAT This view displays the details of system statistics of the current tenant.
DBA_WR_CONTROL This view displays the WR-related configuration information.
DBA_WR_SYSTEM_EVENT This view displays the persistent tenant-level wait event information of the current tenant.
DBA_WR_EVENT_NAME This view displays the persistent tenant-level wait event names of the current tenant.
DBA_WR_SQLTEXT This view displays the SQL texts collected by WR of the current tenant.
DBA_WR_SQLSTAT This view displays the basic performance statistics of SQL statements executed by the current tenant.
DBA_WR_SYS_TIME_MODEL This view displays the WR data of the Time Model statistics of the current tenant.
DBA_WR_SQL_PLAN This view displays the GV$OB_SQL_PLAN data collected by WR.

Materialized views

View Purpose
DBA_MVIEW_DEPS This view displays the dependencies of materialized views in the current tenant.
DBA_MVIEW_LOGS This view displays the information about materialized view logs.
DBA_MVIEW_RUNNING_JOBS This view displays the running materialized view-related tasks in the current tenant, including refresh tasks and MLOG cleanup tasks.
USER_MVIEWS This view displays the information about materialized views.
DBA_MVIEWS This view displays the information about all materialized views.
DBA_MVREF_CHANGE_STATS This view displays the statistics about materialized view refreshes.
DBA_MVREF_RUN_STATS This view displays the information about each run of a materialized view refresh, which is identified by the REFRESH_ID.
DBA_MVREF_STATS This view displays the basic timing statistics about materialized view refreshes.
DBA_MVREF_STATS_PARAMS This view displays the refresh statistics attributes associated with each materialized view.
DBA_MVREF_STATS_SYS_DEFAULTS This view displays the system-level default values of the statistics attributes of the materialized view refresh history.
DBA_MVREF_STMT_STATS This view displays the information about the statements associated with a materialized view refresh.
ALL_MVIEWS This view displays the information about materialized views.
ALL_MVIEW_LOGS This view displays the information about all materialized view logs.
USER_MVIEW_LOGS This view displays the information about materialized view logs.
USER_MVREF_CHANGE_STATS This view displays the statistics about materialized view refreshes. These statistics display the number of data changes in the base tables associated with each materialized view refresh and the information required to load these changes.
USER_MVREF_RUN_STATS This view displays the information about each run of a materialized view refresh, which is identified by the REFRESH_ID. The information includes the timing statistics and parameters specified for the run.
USER_MVREF_STATS This view displays the basic timing statistics about materialized view refreshes.
USER_MVREF_STATS_PARAMS This view displays the refresh statistics attributes associated with each materialized view.
USER_MVREF_STATS_SYS_DEFAULTS This view displays the system-level default values of the statistics attributes of the materialized view refresh history.
USER_MVREF_STMT_STATS This view displays the information about the statements associated with a materialized view refresh.

Sequence-related

View name Description
ALL_SEQUENCES This view displays all SEQUENCEs accessible to the current user.
DBA_SEQUENCES This view displays all SEQUENCEs in the database.
USER_SEQUENCES This view displays all SEQUENCEs owned by the current user.
TENANT_VIRTUAL_GLOBAL_VARIABLE This view displays global variable information.
TENANT_VIRTUAL_SESSION_VARIABLE This view displays session variable information.

User-defined type-related

View name Description
ALL_COLL_TYPES This view displays all user-defined collection types available in the database. The columns are the same as those in DBA_COLL_TYPES.
ALL_TYPES This view displays all user-defined types available in the database.
ALL_TYPE_ATTRS This view displays all user-defined type attributes available in the database.
DBA_COLL_TYPES This view displays all user-defined collection types available in the database. The columns are the same as those in ALL_COLL_TYPES.
DBA_TYPES This view displays all user-defined types available in the database.
DBA_TYPE_ATTRS This view displays all user-defined type attributes available in the database.
USER_COLL_TYPES This view displays all user-defined collection types available to the current user.
USER_TYPES This view displays all user-defined types of the current user.
USER_TYPE_ATTRS This view displays all user-defined type attributes available to the current user.

Constraint-related

View name Description
ALL_CONSTRAINTS This view displays constraint information for all tables accessible to the current user.
ALL_CONS_COLUMNS This view displays column information for all constraints of all tables accessible to the current user.
DBA_CONSTRAINTS This view displays constraint information for all tables in the database.
DBA_CONS_COLUMNS This view displays column information for all constraints of all tables in the database.
USER_CONSTRAINTS This view displays constraint information for all tables owned by the current user.
USER_CONS_COLUMNS This view displays column information for all constraints of all tables owned by the current user.

Major compaction-related views

View name Description
DBA_OB_MAJOR_COMPACTION This view displays the global information of the major compaction of the current tenant.
DBA_OB_ZONE_MAJOR_COMPACTION This view displays the information of the major compaction of each zone of the current tenant.
DBA_OB_FREEZE_INFO This view displays the version information generated by the major freeze.

Resource management-related views

View name Description
DBA_OB_RSRC_DIRECTIVES This view displays the resource configuration parameters of the current tenant in the Resource Manager.
DBA_OB_RSRC_IO_DIRECTIVES This view displays the IO resource configuration of the current tenant in the Resource Manager.
DBA_RSRC_GROUP_MAPPINGS This view displays the binding relationship between users and resource groups.
DBA_RSRC_CONSUMER_GROUPS This view displays the information of all resource groups in the database.
DBA_RSRC_PLANS This view displays all the resource management plans defined in the system.
DBA_RSRC_PLAN_DIRECTIVES This view displays the detailed information of each resource plan directive in the database.

Arbitration service-related views

View name Description
DBA_OB_LS_ARB_REPLICA_TASKS This view displays the arbitration service tasks that are running in the current tenant.
DBA_OB_LS_ARB_REPLICA_TASK_HISTORY This view displays the history of arbitration service tasks executed in the current tenant.

Tenant management-related views

View name Description
DBA_OB_TENANTS This view displays the basic information of the tenant.
DBA_OB_TENANT_EVENT_HISTORY This view displays the historical operation records of the current tenant.
DBA_OB_DATABASES This view displays the database metadata of the tenant.

Overview of performance views

ASH related

View name Description
GV$ACTIVE_SESSION_HISTORY This view displays the active session history.
V$ACTIVE_SESSION_HISTORY This view displays the active session history.
GV$OB_ACTIVE_SESSION_HISTORY This view displays the active session history of all OBServer nodes in the current tenant.
V$OB_ACTIVE_SESSION_HISTORY This view displays the active session history of the current OBServer node in the current tenant.

CCL related

View name Description
GV$OB_SQL_CCL_STATUS This view records the number of SQL statements that hit the corresponding throttling rules on all nodes of the current tenant at the current moment. This information is used to observe the impact of the throttling rules set in the system.
V$OB_SQL_CCL_STATUS This view records the number of SQL statements that hit the corresponding throttling rules on the current node of the current tenant at the current moment. This information is used to observe the impact of the throttling rules set in the system.

Catalog related

View name Description
GV$OB_HMS_CLIENT_POOL_STAT This view displays the usage of the HMS Catalog client of the current tenant.
V$OB_HMS_CLIENT_POOL_STAT This view displays the usage of the HMS Catalog client of the current tenant.

DML related

View name Description
GV$DML_STATS This view displays the DML information in the current user table.
V$DML_STATS This view displays the DML information in the current user table.

DTL related

View name Description
GV$OB_DTL_INTERM_RESULT_MONITOR This view displays the monitoring information of the DTL intermediate result manager.
V$OB_DTL_INTERM_RESULT_MONITOR This view displays the monitoring information of the DTL intermediate result manager.

DBLINK related

View name Description
GV$DBLINK This view displays all database links ( IN_TRANSACTION=YES ) opened after the query session that issued the view. These database links must be committed or rolled back before they are closed.
V$DBLINK This view displays all database links ( IN_TRANSACTION=YES ) opened after the query session that issued the view. These database links must be committed or rolled back before they are closed.

Service management

View name Description
oceanbase.DBA_OB_SERVER_JOBS This view displays all tasks on all OBServer nodes.
oceanbase.DBA_OB_SERVERS This view displays information about all OBServer nodes.
oceanbase.CDB_OB_SERVICES This view displays all SERVICE_NAME information in all tenants.
oceanbase.DBA_OB_SERVICES This view displays all SERVICE_NAME information in the current tenant.

Log replica

View name Description
GV$OB_LOG_STAT This view displays the status of Palf.
V$OB_LOG_STAT This view displays the status of Palf.
GV$OB_LOG_TRANSPORT_DEST_STAT The GV$OB_LOG_TRANSPORT_DEST_STAT view displays information about all downstream log synchronization links (OBCDC/network standby database) of all OBServer nodes in the current tenant.
V$OB_ARCHIVE_DEST_STATUS This view displays the status of each archive destination of the current tenant.
V$OB_LOG_TRANSPORT_DEST_STAT The V$OB_LOG_TRANSPORT_DEST_STAT view displays information about all downstream log synchronization links (OBCDC/network standby database) of all OBServer nodes in the current tenant.
V$OB_LS_LOG_RESTORE_STATUS This view displays the log restore status at the log stream level for the current tenant.
V$OB_LS_REPLICA_TASK_PLAN This view displays all tasks that should be generated (including those that have been generated and those that have not been generated).
V$OB_LS_SNAPSHOTS This view displays information about all log stream snapshots stored in the persistent storage of all units on the current OBServer.

Partitioning

View name Description
V$OB_DYNAMIC_PARTITION_TABLES This view displays information about dynamic partition tables in the current tenant.

Shared storage

View name Description
V$OB_SS_SSTABLES This view displays information about SSTables on the shared storage of the current tenant.
GV$OB_SS_LOCAL_CACHE This view displays various cache data metrics in the local cache of each OBServer node for all tenants in shared storage mode.
V$OB_SS_LOCAL_CACHE This view displays various cache data metrics in the local cache of the current OBServer node for all tenants in shared storage mode.
oceanbase.CDB_OB_SERVER_SPACE_USAGE This view displays detailed information about storage space usage by each tenant on each node.

Cache-related

View name Description
GV$OB_PLAN_CACHE_PLAN_EXPLAIN This view displays the physical execution plans cached in the plan cache of all servers.
GV$OB_PLAN_CACHE_PLAN_STAT This view records the status of each cached object in the plan cache of all servers for the current tenant.
GV$OB_PLAN_CACHE_STAT This view records the status of each plan cache in all servers for the current tenant.
V$OB_PLAN_CACHE_PLAN_EXPLAIN This view displays the physical execution plans cached in the plan cache of the current server.
V$OB_PLAN_CACHE_PLAN_STAT This view records the status of each cached object in the plan cache of the current server for the current tenant.
V$OB_PLAN_CACHE_STAT This view records the status of each plan cache in all servers for the current tenant.
GV$OB_PL_CACHE_OBJECT The GV$OB_PL_CACHE_OBJECT view displays the basic information of all PL-related cached objects in all servers for the current tenant.
GV$OB_RESULT_CACHE_OBJECTS This view displays the cached objects in the result cache created during the execution of udf marked with result_cache on all OBServer nodes.
V$OB_PL_CACHE_OBJECT The V$OB_PL_CACHE_OBJECT view displays the basic information of all PL-related cached objects in the current server for the current tenant.
V$OB_RESULT_CACHE_OBJECTS This view displays the cached objects in the result cache created during the execution of udf marked with result_cache on the current OBServer node.

I/O performance-related

View name Description
GV$OB_SHARED_STORAGE_QUOTA This view displays the I/O access resource information on all OBServer nodes.
V$OB_SHARED_STORAGE_QUOTA This view displays the I/O access resource information on the current OBServer node.

Encrypted table-related

View name Description
V$OB_ENCRYPTED_TABLES This view displays the encryption status of tables with encryption enabled.
V$ENCRYPTED_TABLESPACES This view displays the encryption status of tablespaces with encryption enabled.

Memory-related

View name Description
GV$OB_MEMORY This view displays the memory usage of each tenant on all servers.
GV$OB_MEMSTORE This view displays the memory usage of MemTables for all tenants on all servers.
GV$OB_SQL_WORKAREA_MEMORY_INFO This view displays information about the SQL Workarea, including the maximum available memory, current used memory, and current held memory.
GV$OB_SSTABLES This view displays the SSTable information of the tenant.
GV$OB_MEMSTORE_INFO This view displays the details of MemTables for all partitions of all tenants on all servers.
V$OB_MEMSTORE_INFO This view displays the details of MemTables for all partitions of all tenants on all servers.
V$OB_MEMORY This view displays the memory statistics at the tenant level.
V$OB_MEMSTORE This view displays the memory usage of MemTables for all tenants on the current server.
V$OB_SSTABLES This view displays the SSTable information of the tenant.
GV$OB_TENANT_MEMORY This view displays the memory usage of each tenant on the cluster.
V$OB_TENANT_MEMORY This view displays the memory usage of each tenant in the current observer process.

OBKV-related

View name Description
GV$OB_KVCACHE This view displays the KVCACHE information on each OBServer node.
V$OB_KVCACHE This view displays the KVCACHE information on each OBServer node.

PS-related

View name Description
GV$OB_PS_ITEM_INFO This view provides monitoring capabilities for Prepared Statements, including the basic information of all Prepare Statements in the PS Cache.
GV$OB_PS_STAT This view monitors the overall status of the PS Cache, including hit rate, memory usage, and the number of cached items.
V$OB_PS_ITEM_INFO This view provides monitoring capabilities for Prepared Statements, including the basic information of all Prepared Statements in the PS Cache.
V$OB_PS_STAT This view monitors the overall status of the PS Cache, including hit rate, memory usage, and the number of cached items.
GV$OB_SESSION_PS_INFO This view displays the PS information opened by all sessions in the current tenant.
V$OB_SESSION_PS_INFO This view displays the PS information opened by all sessions in the current OBServer tenant.

PX related

View name Description
GV$OB_PX_TARGET_MONITOR This view displays the PX thread usage on all OBServer nodes.
V$OB_PX_TARGET_MONITOR This view displays the PX thread usage on the OBServer node.
V$OB_PX_P2P_DATAHUB This view displays information about parallel execution data transfer operations.

Full-link tracing related

View name Description
GV$OB_FLT_TRACE_CONFIG This view displays diagnostic information about full-link tracing.

Lock related

View name Description
GV$OB_LOCKS This view displays the locks held or requested by the current user for each table.
V$OB_LOCKS This view displays the locks held or requested by the current user for each table.

Time zone and date related

View name Description
V$TIMEZONE_NAMES This view displays the valid time zone names.
V$OB_TIMESTAMP_SERVICE This view displays the GTS/STS values of the GTS service of the tenant.

Transaction related

View name Description
GV$OB_TRANSACTION_PARTICIPANTS This view displays the transaction participant information on all OBServer nodes.
GV$SYSTEM_EVENT This view displays some wait events at the tenant system level on all servers, and counts the number of occurrences, wait time, and timeout count for each type of wait event.
V$OB_TRANSACTION_PARTICIPANTS This view displays the transaction participant information on all OBServer nodes.
V$SYSTEM_EVENT This view displays some wait events at the tenant system level on the current server, and counts the number of occurrences, wait time, and timeout count for each type of wait event.
V$GLOBAL_TRANSACTION This view displays information about the active global transaction.
GV$OB_GLOBAL_TRANSACTION This view displays information about all XA transactions in the cluster.
V$OB_GLOBAL_TRANSACTION This view displays information about all XA transactions with the current node as the original Scheduler.
GV$OB_TRANSACTION_SCHEDULERS GV$OB_TRANSACTION_SCHEDULERS is used to query the transaction Scheduler information of all servers.
V$OB_TRANSACTION_SCHEDULERS V$OB_TRANSACTION_SCHEDULERS is used to query the transaction Scheduler information of all servers.

Instance-related

View Name Description
GV$INSTANCE This view displays the status of the current database instance.
V$INSTANCE This view displays the status of the current database instance.

Session-related

View Name Description
GV$OB_PROCESSLIST This view displays the session information of all OBServer nodes where the tenant is located.
GV$SESSION_WAIT This view displays some information about the current or last wait event of all sessions on all servers, including the wait event name and wait time.
GV$SESSION_WAIT_HISTORY This view displays the information about the last 10 wait events of all sessions on all servers.
GV$SESSTAT This view displays some statistics at the session level on all servers.
V$NLS_PARAMETERS This view displays the NLS parameters at the session level.
V$OB_PROCESSLIST This view displays the session information of the current OBServer node.
V$SESSION_WAIT This view displays the information about the current or last wait event of all sessions on the current server, including the wait event name and wait time.
V$SESSION_WAIT_HISTORY This view displays the information about the last 10 wait events of all sessions on the current server.
V$SESSTAT This view displays some statistics at the session level.
V$EVENT_NAME This view displays the definitions of various events under the tenant.
GV$OPEN_CURSOR This view displays the information about the open session cursors on all nodes.
V$OB_SESSION This view records the session information created in the current server.
V$OPEN_CURSOR This view displays the information about the open session cursors.

SQL audit-related

View Name Description
GV$OB_SQL_AUDIT This view displays the statistics about the source and execution status of each SQL request on all servers.
V$OB_SQL_AUDIT This view displays the statistics about the source and execution status of each SQL request on the current server.

Statistics and histogram

View name Description
GV$OB_OPT_STAT_GATHER_MONITOR This view displays the real-time status of statistics collection tasks for the current tenant on all OBServer nodes.
V$OB_OPT_STAT_GATHER_MONITOR This view displays the real-time status of statistics collection tasks for the current tenant on the current OBServer node.

Network

View name Description
GV$OB_NIC_INFO This view displays the NIC information of all OBServer nodes where the tenant resides, mainly the NIC speed.
V$OB_NIC_INFO This view displays the NIC information of the current OBServer node, mainly the NIC speed.

Workarea

View name Description
GV$SQL_WORKAREA This view displays the workarea statistics of all operators executed by SQL automatic memory management.
GV$SQL_WORKAREA_ACTIVE This view displays the workarea information of the current active operators.
GV$SQL_WORKAREA_HISTOGRAM This view displays the workarea statistics of all operators executed by SQL automatic memory management.
V$OB_SQL_WORKAREA_MEMORY_INFO This view queries some overall information about SQL workarea, including the maximum available memory, current used memory, and current hold memory.
V$SQL_WORKAREA This view displays the workarea statistics of all operators executed by SQL automatic memory management.
V$SQL_WORKAREA_ACTIVE This view displays the workarea information of the current active operators.
V$SQL_WORKAREA_HISTOGRAM This view displays the workarea statistics of all operators executed by SQL automatic memory management.

WR related

View name Description
GV$OB_QUERY_RESPONSE_TIME_HISTOGRAM This view displays the histogram information of the execution time of all queries in the current tenant.
GV$OB_RES_MGR_SYSSTAT This view displays the statistics of resource groups in all OBServer nodes of the current tenant.
V$OB_RES_MGR_SYSSTAT This view displays the statistics of resource groups in the current OBServer node of the current tenant.
GV$OB_SQLSTAT This view displays the basic performance statistics of SQL statements in the cluster. Each SQL statement is a row (each unique combination of SQL_ID and Plan_Hash is a row).
V$OB_SQLSTAT This view displays the basic performance statistics of SQL statements on the current node. Each SQL statement is a row (each unique combination of SQL_ID and Plan_Hash is a row).
GV$OB_SESS_TIME_MODEL This view displays the Session-level Time Model statistics in the cluster.
V$OB_SESS_TIME_MODEL This view displays the Session-level Time Model statistics on the current node.
GV$OB_SYS_TIME_MODEL This view displays the tenant-level Time Model statistics in the cluster.
V$OB_SYS_TIME_MODEL This view displays the tenant-level Time Model statistics on the current node.
V$OB_QUERY_RESPONSE_TIME_HISTOGRAM This view displays the histogram information of the execution time of all queries in the current tenant.

Database basic information

View name Description
GV$OB_PARAMETERS This view displays the configuration information on all OBServer nodes where the tenant is located.
GV$OB_SERVER_SCHEMA_INFO This view displays the schema information on all servers.
V$OB_SERVER_SCHEMA_INFO This view displays the schema information on all servers.
GV$OB_UNITS This view displays the unit information on the OBServer node where the tenant is located. The system tenant can view the unit information on all OBServer nodes in the cluster.
GV$SYSSTAT This view displays the system-level statistical events on all servers.
V$GLOBALCONTEXT This view displays the CLIENT_IDENTIFIER value of the global context attribute accessible to the current session.
V$OB_PARAMETERS This view displays the configuration information on the current OBServer node.
V$SYSSTAT This view displays the system-level statistical events on the current server.
V$OB_UNITS This view displays the unit information on the current OBServer node.
V$VERSION This view displays the names and versions of all components of the database product.
V$STATNAME This view displays the names of statistical items.

Thread-related

View name Description
GV$OB_PX_WORKER_STAT In a parallel execution scenario, this view displays the execution information of each thread.
V$OB_PX_WORKER_STAT In a parallel execution scenario, this view displays the execution information of each thread.
GV$OB_THREAD This view displays the status information of all threads in the observer process on each OBServer node. In a user tenant, this view displays the threads related to the current tenant.
V$OB_THREAD This view displays the status information of all threads in the observer process on the current OBServer node. In a user tenant, this view displays the threads related to the current tenant.

Views related to major compactions

View Name Description
GV$OB_COMPACTION_PROGRESS This view displays the major compaction progress at the OBServer level for the current tenant.
GV$OB_COMPACTION_SUGGESTIONS This view displays the major compaction suggestions.
GV$OB_COMPACTION_DIAGNOSE_INFO This view displays the major compaction diagnostic information.
GV$OB_TABLET_COMPACTION_HISTORY This view displays the major compaction history at the tablet level.
GV$OB_TABLET_COMPACTION_PROGRESS This view displays the major compaction progress at the tablet level.
GV$GLOBAL_TRANSACTION This view displays the information about the active global transactions.
V$OB_COMPACTION_PROGRESS This view displays the major compaction progress at the server level for the current tenant.
V$OB_COMPACTION_SUGGESTIONS This view displays the major compaction suggestions.
V$OB_COMPACTION_DIAGNOSE_INFO This view displays the major compaction diagnostic information.
V$OB_TABLET_COMPACTION_HISTORY This view displays the major compaction history at the tablet level.
V$OB_TABLET_COMPACTION_PROGRESS This view displays the major compaction progress at the tablet level.

Views related to execution plans

View Name Description
V$SQL_MONITOR_STATNAME This view displays the meaning of the numeric values in the OTHERSTAT_X_ID column of GV$SQL_PLAN_MONITOR.
GV$SQL_PLAN_MONITOR This view displays the plan-level statistics of slow queries on all OBServer nodes. Each slow query has one statistic record, and the trace information of the plan is recorded.
V$SQL_PLAN_MONITOR This view displays the plan-level statistics of slow queries on all OBServer nodes. Each slow query has one statistic record, and the trace information of the plan is recorded.
GV$OB_SQL_PLAN This view displays the plan information collected by executing the EXPLAIN PLAN statement on all OBServer nodes for the current tenant.
GV$SQL_JOIN_FILTER This view dynamically displays the Join Filter execution information on all OBServer nodes for the current tenant.
V$OB_SQL_PLAN This view displays the plan information collected by executing the EXPLAIN PLAN statement on the current OBServer node for the current tenant.
V$SQL_JOIN_FILTER This view dynamically displays the Join Filter execution information on the current OBServer node for the current tenant.

Resource management

View Name Purpose
GV$OB_GROUP_IO_STAT This view displays the real-time status of each resource group on all OBServer nodes for the current tenant.
GV$OB_FUNCTION_IO_STAT This view displays the I/O statistics at the function level on all OBServer nodes for the current tenant.
V$OB_GROUP_IO_STAT This view displays the real-time status of each resource group on the current OBServer node for the current tenant.
V$OB_FUNCTION_IO_STAT This view displays the I/O statistics at the function level on the current OBServer node for the current tenant.
GV$OB_CGROUP_CONFIG This view allows you to quickly query the cgroup configurations on all OBServer nodes.
V$OB_CGROUP_CONFIG This view allows you to quickly query the cgroup configurations on the current OBServer node.
V$RSRC_PLAN This view displays the resource management plan of the current active tenant.
GV$OB_TENANT_RESOURCE_LIMIT This view displays the logical resource usage, upper limits, effective restrictions, and maximum usage after a restart on all OBServer nodes for the current tenant.
GV$OB_TENANT_RESOURCE_LIMIT_DETAIL This view displays the restrictions on logical resources for the current tenant on all OBServer nodes, along with the upper limits for each restriction.
V$OB_TENANT_RESOURCE_LIMIT This view displays the logical resource usage, upper limits, effective restrictions, and maximum usage after a restart on the current OBServer node for the current tenant.
V$OB_TENANT_RESOURCE_LIMIT_DETAIL This view displays the restrictions on logical resources for the current tenant on the current OBServer node, along with the upper limits for each restriction.

Arbitration service

View Name Purpose
GV$OB_ARBITRATION_MEMBER_INFO This view displays the arbitration member information for the current tenant.
GV$OB_ARBITRATION_SERVICE_STATUS This view displays the communication status between the arbitration service and each node of the current tenant.
V$OB_ARBITRATION_MEMBER_INFO This view displays the arbitration member information for the current tenant.
V$OB_ARBITRATION_SERVICE_STATUS This view displays the communication status between the arbitration service and the current node of the current tenant.

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