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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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QUICK START
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OceanBase Database

SQL - V4.3.1

  • What's New
  • What is OceanBase Database
    • Overview
    • Differences between the Enterprise Edition and the Community Edition
    • System architecture
    • Compatibility with Oracle
      • Compatibility with Oracle
      • SQL data types
      • Built-in functions
      • System views
    • Compatibility with MySQL
    • Limitations
  • Get Started
    • Try out OceanBase Database Community Edition
    • Learn OceanBase SQL
      • Before you begin
      • Basic SQL operations (MySQL mode)
      • Basic SQL operations (Oracle mode)
    • Build a sample application (MySQL mode)
      • Build a Python application
      • Build a Java application
      • Build a C application
      • Build a Go application
    • Build a sample application (Oracle 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
    • Video tutorials
  • Develop
    • Develop applications (MySQL 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
          • Database connection pool configuration
          • Connect to OceanBase Database by using a Tomcat connection pool
          • c3p0
          • Proxool
          • HikariCP
          • DBCP
          • Commons Pool
          • Druid
      • Sample applications
        • Java
          • Spring Boot
          • Spring Batch
          • Spring Data JDBC
          • Connect to OceanBase Database by using SpringDataJPA
          • Connect to OceanBase Database by using Hibernate
          • MyBatis
          • Connector/J
          • TestContainers
        • Python
          • mysqlclient
          • PyMySQL
          • MySQL-connector-python
        • C
          • MySQL Connector/C
        • Go
          • Go-SQL-Driver/MySQL
          • GORM
        • PHP
          • EXT
          • MySQLi
          • PDO
      • 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
          • Use the SELECT ... FOR UPDATE statement to lock query results
          • Use the SELECT ... LOCK IN SHARE MODE statement to lock query results
        • Use a DBLink in queries
        • Set operations
      • Transactions
        • 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
          • About error codes
          • 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 mode)
      • Connect to OceanBase Database
        • Overview
        • Connect to an OceanBase tenant by using OBClient
        • Connect to OceanBase Database by using ODC
        • 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
        • 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 queries
        • 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
      • Transactions
        • 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
        • Common errors and troubleshooting practices
          • Idle transaction timed out, with Error ORA-24761 reported
          • Transaction timed out, with Error ORA-00600 reported
          • User locked, with ERROR 3118 reported
          • Incorrect user password, with ERROR 1045 reported
          • Table already exists, with Error ORA-00955 reported
          • Table does not exist, with Error ORA-04043 reported
          • Duplicate data inserted, with Error ORA-00001 reported
          • Error ORA-00600 reported in foreign key addition
          • Inconsistent data types, with Error ORA-00932 reported
  • Deploy
    • Overview
    • High availability deployment solutions for OceanBase clusters
    • Deploy OceanBase Database Enterprise Edition
      • Deployment process
      • Before deployment
        • Prepare servers
        • Server configuration
        • Prepare installation packages
        • Deploy OAT
      • Deploy through GUI
        • Configure deployment environment using OAT
          • Add a server
        • Deploy OCP
          • Overview
          • 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 an OBServer node using oatcli
          • (Optional) Configure the clock source
        • Deploy OceanBase clusters using CLI
          • Deploy an OceanBase cluster with two replicas and arbitration service using the CLI
          • Deploy a single-replica OceanBase cluster using the CLI
          • Deploy a three-replica OceanBase cluster using the CLI
        • (Optional) Deploy ODP
    • Deploy OceanBase Database Community Edition
      • Overview
      • Deploy locally
        • Software and hardware requirements
        • Before deployment
          • (Optional) Check resources
          • (Optional) Set password-free SSH logon
          • (Optional) Configure the clock source
          • (Optional) Perform disk planning
          • (Optional) Configure limits.conf
          • (Optional) Configure sysctl.conf
          • (Optional) Disable the firewall and SELinux
          • (Optional) Create a user
        • 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 command line
        • Deploy OceanBase Database by using systemd
      • Deploy an OceanBase cluster in a Kubernetes environment
    • Clear an OceanBase cluster
  • Migrate
    • Overview
    • Migrate from MySQL databases to OceanBase Database
      • Use OMS to migrate data from a MySQL database to a MySQL 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
      • Migrate data from a MySQL database to OceanBase Database using CloudCanal
      • 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 tenant of OceanBase Database to a MySQL database
      • Use OMS to migrate incremental data from an Oracle 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
      • Synchronize data from OceanBase Database to a MySQL database using Canal
      • Migrate data from a MySQL OceanBase database to a MySQL database using CloudCanal
      • Use Flink CDC to migrate data from OceanBase Database to a MySQL database
      • Migrate data from a MySQL database in OceanBase Database to a MySQL database using ChunJun
    • Migrate from Oracle databases to OceanBase Database
      • Use OMS to migrate data from an Oracle database to a MySQL tenant of OceanBase Database
      • Use OMS to migrate data from an Oracle database to an Oracle 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 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 tenant of OceanBase Database
      • Use OMS to migrate data from a DB2 LUW database to an Oracle 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 tenant of OceanBase Database to a DB2 LUW database
      • Use OMS to migrate data from an Oracle 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 tenant of OceanBase Database
    • Migrate from PostgreSQL databases to OceanBase Database
      • Use OMS to migrate data from a PostgreSQL database to a MySQL 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 migrate data from an OceanBase tenant to another of the same type in active-active disaster recovery scenarios
      • Use OBLOADER & OBDUMPER to migrate data between MySQL tenants in OceanBase Database
      • Use OBLOADER & OBDUMPER to migrate data from a MySQL tenant to an Oracle tenant in OceanBase Database
      • Use OBLOADER & OBDUMPER to migrate data between Oracle tenants in OceanBase Database
      • Use OBLOADER & OBDUMPER to migrate data from an Oracle tenant to a MySQL tenant in OceanBase Database
    • Migrate data using SQL statements
      • Migrate data between tables
      • Migrate resource units
      • Export data by using OUTFILE statements
    • Direct load
      • Overview
      • Import data using the LOAD DATA statement
      • Import data through direct load by using the INSERT INTO SELECT statement
  • Manage
    • Log on to an OceanBase tenant
    • Manage clusters
      • Overview
      • 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 a cluster parameter
        • Upgrade a cluster
          • OceanBase Database Enterprise Edition
            • 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
          • Overview
          • Manage resource isolation (Oracle mode)
            • Configure cgroups
            • 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 mode)
            • Configure cgroups
            • 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
        • 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/out
          • Plan resources
          • Modify the unit config for a tenant
          • Modify the number of resource units for a tenant
          • Modify the number of primary zones for a tenant
        • 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 pool information
          • Allocate a resource pool to a tenant
          • Remove resource pools from a tenant
          • Merge and split resource pools
          • Drop a resource pool
        • Manage unit configs
          • Query unit configs
          • Modify a unit config
          • Drop a unit config
    • Manage replicas
      • Overview
      • Replica distribution
        • Locality
        • Common locality operations
          • View locality
          • Modify locality
          • Add replicas
          • Remove replicas
          • Adjust the distribution of replicas
          • View the locality change history
          • Migrate units
      • Traffic distribution
      • Data distribution
      • Data load balancing
        • Overview
        • Transfer a partition
        • Cancel a partition transfer task
        • Cancel a load balancing job
    • High availability
      • High availability overview
      • Multi-replica disaster recovery
        • Data link introduction
        • ODP high availability
        • Database-level high availability
        • Disaster recovery architecture and levels
      • Physical standby database disaster recovery
        • Overview
        • Limitations
        • Create a standby tenant
          • Preparations
          • 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
          • Overview
          • Configure log transmission service
            • Set the 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
          • Specify log compression
        • Log storage service
        • Switch roles
          • Overview of tenant roles
          • Switchover
          • Failover
        • Drop primary and standby tenants
      • Arbitration high availability
        • 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/downgrade information
        • Replace the arbitration service for a cluster
        • Remove the arbitration service for a cluster
        • Clear residual cluster information
      • Manage 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
      • Identification and authentication
        • MySQL mode
          • Identity authentication
          • Password complexity
          • Logon failure processing
        • Oracle mode
          • Identity authentication
          • Password complexity
          • Logon failure processing
      • Access control
        • Overview
        • Users and permissions
          • Overview
          • MySQL mode
            • Privilege types in MySQL 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 mode
            • Privilege types in Oracle mode
            • Create a user
            • View the information of a user
            • Grant direct privileges
            • Privilege delegation
            • Manage roles
              • Overview
              • 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
            • Lock or unlock a user
            • Drop a user
        • Network security access control
        • RPC connection authentication
        • Row-level access control
      • Data transmission encryption
        • Overview
        • OBServer transmission encryption
        • ODP transmission encryption
      • Transparent data encryption
        • Overview
        • MySQL mode
          • Enable TDE for new tables
          • Enable TDE for existing tables
          • Decrypt a table
        • Oracle mode
          • Enable TDE for new tables
          • Enable TDE for existing tables
          • Decrypt a table
      • Security audit
        • Overview
        • Enable security audit
        • Set and view audit rules
        • View audit records
        • Audit user logon operations
        • Audit user operations
        • Audit specified database objects
    • Backup and restore
      • Introduction to physical backup and restore
      • Experience physical backup and restore with simplified deployment
      • Deploy NFS
      • Log archive
        • Overview
        • 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 log archive destination
        • Views related to log archiving
      • Data backup
        • Overview
        • Prepare for the backup
        • Initiate a full data backup job
        • Initiate an incremental data backup job
        • Stop a backup job
        • View the data backup progress
        • View the data backup history
        • View data backup parameter settings
        • Change the backup destination
        • Views related to data backup
      • Clear backup data
        • Automatic cleanup of expired backups
        • Stop backup cleanup
        • Query the backup cleanup progress
        • Query the backup cleanup history
        • Backup cleanup parameter
        • Views related to backup cleanup
      • Restore data
        • Preparations
        • Perform a physical restore
        • 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
        • Physical restore-related parameters
        • Views related to physical restore
      • Restore by table
        • Preparations
        • Restore data by table
        • Cancel table restore
        • View the table restore progress
        • View the table restore result
        • Parameters related to table restore
        • Views related to table restore
      • Optimize backup and restore performance
    • Monitor
      • Overview
      • Metrics
        • System monitoring
          • Overview
          • Metrics
          • Wait events
          • Latch events
        • SQL monitoring
          • Overview
          • SQL audit
          • Execution plans
      • Cases
    • Logs
      • Overview
      • Log levels
      • Log stability
      • Log control
      • Log compression and decompression
      • Log metrics
      • 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
    • Daily inspection
      • Overview
      • Check cluster parameters
      • Check the host status
      • Check tenant resource usage
      • Check cluster resource usage
      • Check the OBServer node status
      • Check the NTP offset
      • Deadlock detection
      • End-to-end tracing
        • Overview
        • Process
        • Methods
        • Show end-to-end tracing information
    • Performance tuning
      • Overview
      • Identify bottlenecks on the data link
      • Identify bottlenecks within components
        • ODP performance bottlenecks
        • ODP performance analysis
        • OBServer performance bottlenecks
          • Overview
          • Non-optimal plan
            • Suboptimal plans
            • Buffer tables
            • Cardinality
          • Hard parsing
          • Capacity issues
          • Internal wait events
      • SQL tuning
        • SQL tuning system
        • Execution plan optimization
          • Statistical information and row estimation
            • Overview
            • 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 the selectivity
              • Row estimation based on the storage layer
            • Use statistical information and row estimation
          • Plan management
            • Plan cache
            • Disadvantages of the plan cache and countermeasures
            • Views related to the plan cache
          • Index selection
            • Overview
            • Reduce row reads
            • Avoid table access by index primary key
            • Avoid sorting
          • Join order and join algorithm
            • Joins
            • Join algorithm
              • Nested loop joins
              • Hash joins
              • Merge joins
              • Common business issues
            • Join types
            • Join order
          • Order and limit optimization
            • Overview
            • SORT assignment and optimization
            • Optimization in ORDER BY + LIMIT scenarios
        • Business logic optimization
          • SQL specifications
          • Schema Specification
        • Locate and analyze slow queries I
        • Locate and analyze slow queries (II)
        • Typical scenarios and cases
    • Troubleshooting
      • Overview
      • Bootstrap
      • Storage
        • Minor compaction and major compaction
        • Memory-related errors
        • Migration, replication, and rebuild tasks
      • Election
        • Election
        • Leader switchover exceptions
        • Absence of the leader
      • Transaction
        • Transaction-related errors
        • Transaction rollbacks
        • Long-running transactions
        • Suspended transactions
        • Idle transactions
      • Log synchronization-related errors
      • Physical standby database
        • Log synchronization stuck for the physical standby database
        • Switchover failures
      • Backup and restore
        • Data backup failures
        • Physical restore failures
      • Troubleshoot SQL execution errors
      • Application exception - error message does not contain OceanBase error code
      • Application exception -- error message contains an OceanBase error code
    • Emergency response
      • Emergency response overview
      • Analysis, diagnosis, and decision-making procedure
      • Common emergency problem handling
        • Hardware issues
          • Node failure
          • Network failure
          • ODP failure
          • Other hardware and network issues
        • Capacity issues
          • Exceptions of SQL queries
          • 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
    • Overview
    • Core features
    • Deployment
      • Overview
      • Recommended parameter configurations for AP scenarios
    • Get started with OceanBase AP
    • Data table design
      • Overview
      • Data distribution
      • Best practices
    • Import data
      • Overview
      • Strategies and best practices
      • ETL acceleration
    • Export data
    • Query acceleration
      • Statistics
      • Materialized views
      • Hints
      • Auto DOP
      • Full direct load
      • Table groups
      • Hybrid row-column storage
    • 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
  • OBKV
    • OBKV-Table
      • Use the OBKV-Table GO client
        • Use the OBKV-Table Go client to connect to a cluster
        • Overview of the Go client
        • Individual API operations
        • Batch operations
        • About queries
        • Aggregation API
        • Filters
  • Reference
    • OceanBase concepts
      • Overall architecture of OceanBase Database
      • Development of OceanBase Database
      • Multi-tenant architecture
        • Overview
        • Compatibility modes
        • Tenants
        • Tenants and resource management
          • Tenant resource management
          • Multi-tenant resource isolation
          • Resource unit balancing
      • Database objects
        • Oracle mode
          • Introduction
            • Overview
            • Database object types
            • Database object storage
            • Dependencies between database objects
          • Tables
            • Overview
            • Data type
              • Overview
              • Character data types
              • Numeric data types
              • Datetime data types
              • ROWID data types
              • LOB data types
              • Format model
                • Overview
                • Number format models
                • Datetime format models
              • Multi-model data types
            • Integrity constraints
            • Table storage
            • Table compression
            • Partitioned table
            • Tables with and without a primary key
            • Temporary tables
          • Indexes
            • Overview
            • Local and global indexes
            • Unique and non-unique indexes
            • Use indexes
            • Index storage
          • Partitions
            • Overview
            • Partitioning keys
            • Partitioning types
            • Partitioned indexes
            • External table partitions
          • Views
            • Views in a database
            • Standard views
              • Standard views
              • Overview
              • OceanBase-specific views
              • Oracle-compatible views
              • View operations and data access
            • Materialized views
              • Materialized views
              • Materialized view logs
              • Creation and update strategies for materialized views
          • Other objects
            • Sequences
            • Synonyms
          • 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
              • CHECK constraints
            • Use of integrity constraints
        • MySQL mode
          • Introduction
            • Overview
            • Database object types
            • Database object storage
            • Dependencies between database objects
          • Tables
            • 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
            • Tables with and without a primary key
          • Indexes
            • About indexes
            • Local and global indexes
            • Unique and non-unique indexes
            • Spatial indexes
            • Full-text index
            • Use indexes
            • Index storage
          • Partitions
            • 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 tenants
              • Oracle-compatible views in the sys tenant
              • View operations and data access
            • Materialized views
              • Materialized views
              • Materialized view logs
              • Creation and update strategies for 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
        • Overview
        • Cluster architecture
        • Data partitions and replicas
          • Overview
          • Log streams
          • Partition replica type
            • Overview
            • Full-featured replica
            • Read-only replicas
          • Multi-replica consensus protocols
          • Data balancing
            • Intra-tenant balancing
            • Views and parameters related to data balancing
        • Dynamic scaling
          • Cluster scaling
          • Tenant resource scaling
            • Overview
            • Horizontal scaling of tenant resources
            • Vertical scaling of tenant resources
            • Cross-zone management of tenant resources
      • Data link
        • Overview
        • Database proxy
          • Overview
          • SQL routing
          • Connection management
          • ODP configuration management
          • Logs and monitoring
        • Database connector
          • Overview
          • OBCI
          • OceanBase Connector/J
          • OceanBase Connector/C
      • User interface and query language
        • SQL
          • Introduction
            • Overview
            • SQL data access
            • SQL standards
          • SQL statements
            • Overview
            • DDL statements
            • DML statements
            • DCL statements
          • Execution process of SQL queries
          • Query SQL execution plans
          • Distributed execution plan
            • Perform distributed execution and parallel queries
            • Generate distributed execution plans
            • Run and disable a parallel query
            • Manage distributed execution plans
            • Perform parameter tuning for a parallel query
        • PL
          • PL concepts
            • Oracle mode
              • Subprograms
              • Stored procedures
              • Functions
              • Triggers
              • Packages
            • MySQL mode
              • Subprograms
              • Stored procedures
              • Functions
              • Triggers
          • PL subprogram execution mechanism
        • Client programming languages
      • Transaction management
        • Transaction
          • Overview
          • Transaction structure
          • Statement-level atomicity
          • GTS
          • Transaction control
            • Overview
            • Active transactions
            • Savepoint
            • Transaction control statements
              • MySQL transaction control
              • Oracle transaction control
          • Redo logs
          • Local transactions
          • Distributed transaction
            • Overview
            • Two-phase commit
          • XA transactions
        • Transaction concurrency and consistency
          • Overview
          • Multi-version read consistency
          • Concurrency control
            • Overview
            • Lock mechanism
          • Transaction isolation level
            • Overview
            • Transaction isolation levels in Oracle mode
            • Transaction isolation levels in MySQL mode
          • Weak consistency read
      • Storage architecture
        • Overview
        • Data storage
          • Overview
          • MemTables
          • SSTables
          • Columnar storage
          • Compression and encoding
        • Compaction
          • Overview
          • Minor compaction
          • Merges
        • Multi-level caches
        • Query processing
        • Data integrity
          • Detect silent data corruption
      • Data reliability and high availability
        • High availability architecture
          • Overview
          • ODP high availability
          • Leader election in distributed systems
          • Multi-replica log synchronization
          • Paxos protocol
          • Automatic handling of node failures
        • Deployment solutions for disaster recovery
        • Data protection
          • Overview
          • Flashback queries
          • Recycle bin
        • Backup and restore
          • Overview
          • Backup directory structures
          • Backup architecture
          • Restore architecture
        • Arbitration-based high availability solution
        • Physical Standby Database solution
      • Database security
        • Overview
        • 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
          • Threads
          • Worker threads
          • Background threads
        • Logs
        • Memory management
          • Overview
          • Memory-related parameters
          • Memory-related views
          • Memory usage logs
          • Diagnose memory errors
    • System management
      • Configuration management
        • Overview
        • Set parameters
        • Set variables
      • Storage management
        • Minor compaction management
          • Overview
          • Automatically trigger a minor compaction
          • Manually initiate a minor compaction
          • View dump information
          • Modify major compaction parameters
        • Major compaction management
          • Overview
          • Automatically trigger a major compaction
          • Configure scheduled major compactions
          • Adaptive major compaction
          • Manually initiate a major compaction
          • Manually control a major compaction
          • View merge information
          • Modify major compaction settings
        • Data compression
          • Overview
          • Data encoding and compression
      • Memory management
        • Overview
        • Memory structure
        • Set the maximum memory for an OceanBase database
        • Manage internal system memory
        • Manage internal tenant memory
        • Manage the memory of the plan cache
        • Memleak-based regular memory leak diagnostics mechanism
        • Query memory usage information
        • Common memory issues
      • Process management
        • Overview
        • Multi-tenant threads of OceanBase Database
        • View the thread status
        • Background threads of OceanBase Database
        • FAQ about multi-tenant threads
      • Disk management
        • Configure automatic scale-out of disk space for data files
    • Database object management
      • Overview
      • MySQL mode
        • Create and manage databases
          • Create a database
          • View databases
          • Modify a database
          • Drop a database
        • Create and manage tables
          • Overview
          • Create a table
          • Column skip index attribute
          • Define an auto-increment column
          • Define column constraints
          • Query tables
          • Modify a table
          • Empty a table
          • Drop a table
          • Lock a table
          • Create and manage external tables
            • Overview
            • Create an external table
            • Create partitions for an external table
            • Manage external files
        • Create and manage partitions
          • Overview
          • Create a partitioned table
          • Modify partitioning rules
          • Add a partition
          • Drop a partition
          • Truncate a partition
          • Partition pruning
          • Query data in specified partitions
          • Create indexes on partitioned tables
            • Overview
            • Local indexes
            • Global indexes
          • Exchange partitions
        • Create and manage table groups
          • Overview
          • 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
          • Overview
          • 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
            • Materialized views
              • Overview
              • Create a materialized view
              • Query materialized views
              • Drop a materialized view
              • Refresh a materialized view
              • Rewrite queries based on materialized views
            • Materialized view logs
              • Overview
              • Create a materialized view log
              • Drop a materialized view log
        • Create and manage sequences
          • Create a sequence
          • Query sequences
          • Reference a sequence
          • Modify a sequence
          • Drop a sequence
        • Create and manage triggers
          • 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
      • Oracle mode
        • Create and manage tables
          • Overview
          • Create a table
          • Column skip index attribute
          • Define column constraints
          • Query the definition of a table
          • Modify a table
          • Empty a table
          • Drop a table
          • Lock a table
          • Create and manage external tables
            • Overview
            • Create an external table
            • Create partitions for an external table
            • Manage external files
        • Create and manage partitions
          • Overview
          • Create a partitioned table
          • 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
            • Overview
            • Local indexes
            • Global indexes
          • Exchange partitions
        • Create and manage table groups
          • Overview
          • 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
          • Overview
          • 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
            • Materialized views
              • Overview
              • Create a materialized view
              • Query materialized views
              • Drop a materialized view
              • Refresh a materialized view
              • Rewrite queries based on materialized views
            • Materialized view logs
              • Overview
              • Create a materialized view log
              • Drop a materialized view log
        • Manage sequences
        • Manage synonyms
        • Create and manage triggers
          • 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 directory objects
        • 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 data in a remote database
          • Drop a DBLink
          • Install and configure OCI
    • Database design specifications and practices
      • Object naming conventions
        • Overview
        • 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
      • SQL syntax
        • System tenants
          • Overview
          • ALTER SYSTEM
            • ACTIVATE STANDBY
            • SET LOG_ARCHIVE_DEST
            • SET LOG_ARCHIVE_DEST_STATE
            • ARCHIVELOG
            • NOARCHIVELOG
            • ARBITRATION
            • BOOTSTRAP
            • BACKUP KEY
            • BACKUP
            • BALANCE TASK
            • CANCEL BACKUP
            • CANCEL BALANCE JOB
            • CANCEL CLONE
            • CANCEL DELETE BACKUP
            • CANCEL MIGRATE UNIT
            • CANCEL RESTORE
            • CANCEL RECOVER TABLE
            • CANCEL TRANSFER PARTITION
            • MAJOR and MINOR
            • MIGRATE UNIT
            • DELETE BACKUP POLICY
            • FLUSH PLAN CACHE
            • JOB
            • SET LOG_RESTORE_SOURCE
            • PARAMETER
            • RECOVER STANDBY
            • RECOVER STANDBY CANCEL
            • REFRESH
            • RESTORE
            • RECOVER TABLE
            • SET DATA_BACKUP_DEST
            • SERVER
            • SWITCHOVER
            • 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
        • User tenants (MySQL 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
                • LOB type
              • 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
              • Spatial data types
                • Overview
                • SRS
                • Create a spatial column
                • Create a spatial index
                • Spatial data formats
            • Expressions
              • Overview
              • Expression syntax
              • Convert data types in expression evaluation
            • Character set and collation
              • Overview
              • Character sets
              • Collations
              • Database-level character sets and collations
              • Table-level character sets and collations
              • Column-level character sets and collations
              • Character sets and collations for character expressions
              • 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
            • Operator precedence
            • Arithmetic operators
            • Bitwise operators
            • Comparison operators
            • Logical operators
            • Assignment operators
            • Date and time operators
            • Concatenation operators
            • BINARY operator
            • CASE conditional operator
          • Sequence pseudocolumns
          • 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
                • LCASE
                • LEFT
                • LENGTH
                • LOCATE
                • LOWER
                • LPAD
                • LTRIM
                • MAKE_SET
                • MID
                • OCT
                • OCTET_LENGTH
                • ORD
                • POSITION
                • QUOTE
                • REGEXP
                • REGEXP_INSTR
                • REGEXP_LIKE
                • REGEXP_REPLACE
                • REGEXP_SUBSTR
                • REPEAT
                • REPLACE
                • REVERSE
                • RIGHT
                • RLIKE
                • RPAD
                • RTRIM
                • SPACE
                • STRCMP
                • SUBSTR
                • SUBSTRING
                • SUBSTRING_INDEX
                • TRIM
                • UCASE
                • UNHEX
                • UPPER
                • WEIGHT_STRING
                • TO_BASE64
                • FROM_BASE64
                • SOUNDEX
              • Conversion functions
                • CAST
                • CONVERT
                • SCN_TO_TIMESTAMP
                • TIMESTAMP_TO_SCN
              • 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
              • BIT_AND
              • BIT_OR
              • BIT_XOR
              • COUNT
              • GROUP_CONCAT
              • GROUPING
              • MAX
              • MIN
              • STD
              • STDDEV
              • STDDEV_POP
              • STDDEV_SAMP
              • SUM
              • VAR_POP
              • VAR_SAMP
              • VARIANCE
            • 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
              • 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
              • MD5
              • UNCOMPRESS
              • UNCOMPRESSED_LENGTH
              • RANDOM_BYTES
              • SHA
              • SHA1
              • SHA2
              • VALIDATE_PASSWORD_STRENGTH
            • Information functions
              • BENCHMARK
              • CHARSET
              • COERCIBILITY
              • COLLATION
              • CONNECTION_ID
              • CURRENT_ROLE
              • CURRENT_USER
              • DATABASE
              • FOUND_ROWS
              • LAST_INSERT_ID
              • 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
            • Performance schema functions
              • FORMAT_BYTES
              • FORMAT_PICO_TIME
            • Lock functions
              • Lock functions
              • GET_LOCK
              • IS_FREE_LOCK
              • IS_USED_LOCK
              • RELEASE_ALL_LOCKS
              • RELEASE_LOCK
            • 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
              • NVL
              • UUID_TO_BIN
              • SLEEP
              • UUID
              • UUID_SHORT
              • VALUES
          • Queries and subqueries
            • Overview
            • Subqueries
            • Joins
            • Full-text queries
          • SQL statements
            • General syntax
            • Common Table Expressions
            • ALTER DATABASE
            • ALTER EXTERNAL TABLE
            • ALTER OUTLINE
            • ALTER SEQUENCE
            • MAJOR and MINOR
            • ALTER TABLE
            • ALTER TABLEGROUP
            • ALTER TABLEGROUP
            • ALTER USER
            • ALTER VIEW
            • ANALYZE
            • CREATE DATABASE LINK
            • CREATE DATABASE
            • CREATE EXTERNAL TABLE
            • CREATE INDEX
            • CREATE MATERIALIZED VIEW
            • CREATE MATERIALIZED VIEW LOG
            • CREATE OUTLINE
            • CREATE RESTORE POINT
            • CREATE ROLE
            • CREATE SEQUENCE
            • CREATE TABLE
            • CREATE TABLEGROUP
            • CREATE TABLESPACE
            • CREATE USER
            • CREATE VIEW
            • DEALLOCATE PREPARE
            • DROP DATABASE LINK
            • DELETE
            • DESCRIBE
            • DROP DATABASE
            • DROP INDEX
            • DROP MATERIALIZED VIEW
            • DROP MATERIALIZED VIEW LOG
            • DROP OUTLINE
            • DROP ROLE
            • DROP TABLE
            • DROP TABLEGROUP
            • DROP TABLESPACE
            • DROP SEQUENCE
            • DROP USER
            • DROP VIEW
            • EXECUTE
            • EXPLAIN
            • FLASHBACK
            • GRANT
            • HELP
            • INSERT
            • KILL
            • LOAD DATA
            • LOCK TABLES
            • OPTIMIZE
            • PREPARE
            • PURGE
            • PURGE RECYCLEBIN
            • RENAME USER
            • RENAME TABLE
            • REPLACE
            • REVOKE
            • SAVEPOINT
            • SCHEMA
            • SELECT INTO
            • SELECT
              • SELECT statement
              • JOIN clause
              • OVER clause
              • UNION clause
            • SET DEFAULT ROLE
            • SET
            • SET CHARSET
            • SET NAMES
            • SET PASSWORD
            • SET ROLE
            • SET TRANSACTION
            • SHOW
            • TRANSACTION
            • TRUNCATE TABLE
            • UPDATE
            • USE
            • VALUES
          • 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
        • User tenants (Oracle mode)
          • Introduction to SQL
          • Pseudo columns
            • Overview
            • Hierarchical query pseudocolumns
            • Sequence pseudocolumns
            • ORA_ROWSCN pseudocolumn
            • ROWNUM pseudocolumn
            • ROWID pseudocolumn
          • 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
              • Rowid data types
              • User-defined data types
              • Any types
              • JSON data types
                • Overview
                • Create JSON columns
                • Query JSON data
                • Conversion rules for JSON data types
              • XML data types
                • Overview
                • XML data definition
                • Create an XMLType column
                • Query XMLType data
                • Convert XMLType data
              • Spatial data types
                • Overview
                • Create a spatial column
                • SDO_GEOMETRY attribute access
            • 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
              • Comments within SQL statements
              • Comments on schema and non-schema objects
              • Hints
                • Overview
                • Hint list
                  • Hints related to access path
                  • Hints related to join orders
                  • Hints related to joins
                  • Hints related to parallel execution
                  • Hints related to query strategy
                  • Hints related to query conversion
                  • Other 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
              • Reference partitioned tables and indexes
              • Reference an attribute or method of an object type
            • Character sets and collations
          • Operators
            • Overview
            • 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
              • 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
                • Query XMLType data functions
                  • EXTRACT
                  • EXTRACTVALUE
                  • XMLSERIALIZE
                  • XMLCAST
                  • XMLTABLE
                  • XMLSEQUENCE
                • Modify XMLType data functions
                  • UPDATEXML
                  • INSERTCHILDXML
                  • DELETEXML
              • Spatial functions
                • Overview
                • SDO_GEOMETRY constructor functions
                • SDO_GEOMETRY query functions
                • SDO_GEOMETRY 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
              • WMSYS.WM_CONCAT/WM_CONCAT
              • GROUP_ID
              • GROUPING_ID
            • Analysis functions
              • Overview
              • AVG
              • 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 query
            • Hierarchical query
            • Compound query
            • Join query
            • Subquery
            • Lateral derived tables
            • DUAL table query
          • SQL statements
            • DDL
              • ALTER EXTERNAL TABLE
              • ALTER INDEX
              • ALTER KEYSTORE
              • ALTER OUTLINE
              • ALTER PROFILE
              • ALTER ROLE
              • ALTER SEQUENCE
              • ALTER SESSION
              • ALTER SYSTEM FLUSH PLAN CACHE
              • ALTER SYSTEM PARAMETER
              • ALTER TABLE
              • ALTER TABLEGROUP
              • ALTER USER
              • COMMENT
              • CREATE CONTEXT
              • CREATE DIRECTORY
              • CREATE DATABASE LINK
              • CREATE EXTERNAL TABLE
              • CREATE INDEX
              • CREATE KEYSTORE
              • CREATE MATERIALIZED VIEW
              • CREATE MATERIALIZED VIEW LOG
              • CREATE OUTLINE
              • CREATE PROFILE
              • CREATE ROLE
              • CREATE SEQUENCE
              • CREATE SYNONYM
              • CREATE TABLE
              • CREATE TABLEGROUP
              • CREATE TABLESPACE
              • CREATE USER
              • CREATE VIEW
              • DROP CONTEXT
              • DROP DATABASE LINK
              • DROP DIRECTORY
              • DROP INDEX
              • DROP MATERIALIZED VIEW
              • DROP MATERIALIZED VIEW LOG
              • DROP OUTLINE
              • DROP PROFILE
              • DROP ROLE
              • 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
              • UPDATE
            • DCL
              • ANALYZE
              • ALTER SYSTEM KILL SESSION
              • AUDIT
              • COMMIT
              • FLASHBACK TABLE BEFORE DROP
              • GRANT
              • KILL
              • LOAD DATA
              • LOCK TABLE
              • 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
          • Multi-table join specifications
          • Table scan
          • Transactions
          • Cache
          • Hint
          • Others
        • SQL statement examples
          • Implicit data type conversion
          • Join tables
          • Weak consistency read
          • Pagination queries
      • PL reference
        • What is PL
          • Overview
          • Main features of PL
          • PL architecture
        • PL reference (MySQL mode)
          • Syntax of PL stored programs
          • PL stored procedures
            • Overview
            • Variables in stored programs
            • Stored procedures
            • Stored objects and privilege management
            • Stored functions
            • Trigger
            • Limitations on stored programs
          • 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
            • Effective scope of an exception handler
            • Diagnostics area
            • Exception handling and OUT/INOUT parameters
            • Limitations on exception handling
          • PL system packages
            • Overview
            • DBMS_MVIEW
              • Overview
              • PURGE_LOG
              • REFRESH
            • DBMS_MVIEW_STAT
              • Overview
              • PURGE_REFRESH_STATS
              • SET_MVREF_STATS_PARAMS
              • SET_SYSTEM_DEFAULT
            • 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_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
            • 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_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_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
          • Reserved and non-reserved PL keywords
        • PL reference (Oracle mode)
          • PL language basics
            • Character sets
            • Lexical units
            • Declare
            • Reference identifiers
            • Scope and visibility of identifiers
            • Assign values
            • 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 constructor function
            • Collection methods
              • Overview
              • DELETE method
              • TRIM method
              • EXTEND method
              • EXISTS method
              • FIRST and LAST methods
              • COUNT method
              • LIMIT method
              • PRIOR and NEXT methods
            • Records
            • 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 cursors
              • Cursor variables
              • Traverse cursor data by using the FOR loop
              • Modify and drop a cursor
            • Transaction processing and control
            • Autonomous transactions
              • Overview
              • Control autonomous transactions
              • Autonomous triggers
              • Call autonomous functions from SQL statements
          • PL dynamic SQL
            • Overview
            • Execute dynamic SQL statements
            • 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 table function
              • Application
            • User-defined functions
              • Overview
              • Interface for user-defined aggregate functions
              • Create user-defined aggregate functions
              • Use user-defined aggregate functions
            • Collection of stored procedure information and its impact on parallel execution of SQL statements
            • PL DBLinks
          • PL triggers
            • Overview
            • Create a DML trigger
            • Modify and drop a trigger
            • Disable or enable a trigger
            • Query trigger information
            • INSTEAD OF DML trigger
            • Compound DML trigger
          • PL packages
            • Overview
            • Create a program package
            • Overloaded programs in a package
            • Manage program packages
            • Definition of the PL environment by the STANDARD package
          • PL exception handling
            • Overview
            • Compile-Time alerts
            • Exception types
            • Exception handling processes
          • 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 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_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
              • APPEND
              • CLOSE
              • COPY
              • CREATETEMPORARY
              • ERASE
              • FREETEMPORARY
              • GETLENGTH
              • ISOPEN
              • INSTR
              • ISTEMPORARY
              • OPEN
              • READ
              • SUBSTR
              • TRIM
              • WRITE
              • WRITEAPPEND
            • DBMS_LOCK
              • Overview
              • ALLOCATE_UNIQUE
              • ALLOCATE_UNIQUE_AUTONOMOUS
              • REQUEST
              • SLEEP
              • RELEASE
            • DBMS_METADATA
              • Overview
              • GET_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_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_PROGRAM
              • DEFINE_PROGRAM_ARGUMENT
              • DISABLE
              • DROP_JOB
              • DROP_PROGRAM
              • ENABLE
              • GENERATE_JOB_NAME
              • RUN_JOB
              • SET_ATTRIBUTE
              • SET_JOB_ARGUMENT_VALUE
            • DBMS_SESSION
              • Overview
              • CLEAR_ALL_CONTEXT
              • CLEAR_CONTEXT
              • CLEAR_IDENTIFIER
              • RESET_PACKAGE
              • SET_CONTEXT
              • SET_IDENTIFIER
            • 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
            • DBMS_UDR
              • Overview
              • CREATE_RULE
              • DISABLE_RULE
              • ENABLE_RULE
              • REMOVE_RULE
            • DBMS_UTILITY
              • Overview
              • 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
            • 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_XPLAN
              • Overview
              • DISPLAY_ACTIVE_SESSION_PLAN
              • DISPLAY_CURSOR
              • DISPLAY
              • DISABLE_OPT_TRACE
              • DISPLAY_SQL_PLAN_BASELINE
              • ENABLE_OPT_TRACE
              • SET_OPT_TRACE_PARAMETER
            • 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
              • FCLOSE
              • FFLUSH
              • FOPEN
              • FGETPOS
              • FREMOVE
              • FRENAME
              • FSEEK
              • NEW_LINE
              • GET_LINE
              • PUT
              • PUT_LINE
            • UTL_I18N
              • Overview
              • RAW_TO_CHAR
              • STRING_TO_RAW
            • 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
            • ANYDATA TYPE
              • Overview
              • 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
          • Reserved PL keywords
      • Reserved keywords (MySQL mode)
      • Reserved keywords (Oracle mode)
    • System views
      • Overview
      • Overview of system views
      • Changes in views in OceanBase Database 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.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.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_OB_DATABASE_PRIVILEGE
          • oceanbase.CDB_IND_COLUMNS
          • oceanbase.CDB_IND_PARTITIONS
          • oceanbase.CDB_IND_SUBPARTITIONS
          • CDB_INDEX_USAGE
          • oceanbase.CDB_INDEXES
          • CDB_MVIEW_LOGS
          • 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_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_DATA_DICTIONARY_IN_LOG
          • oceanbase.CDB_OB_DATABASES
          • oceanbase.CDB_OB_DEADLOCK_EVENT_HISTORY
          • 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_MAJOR_COMPACTION
          • oceanbase.CDB_OB_RECOVER_TABLE_JOB_HISTORY
          • oceanbase.CDB_OB_RECOVER_TABLE_JOBS
          • oceanbase.CDB_OB_RESTORE_HISTORY
          • oceanbase.CDB_OB_RESTORE_PROGRESS
          • oceanbase.CDB_OB_SYS_VARIABLES
          • 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_TENANT_EVENT_HISTORY
          • 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_ZONE_MAJOR_COMPACTION
          • oceanbase.CDB_OBJECTS
          • oceanbase.CDB_PART_INDEXES
          • oceanbase.CDB_PART_KEY_COLUMNS
          • oceanbase.CDB_PART_TABLES
          • 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.DBA_DB_LINKS
          • oceanbase.DBA_IND_PARTITIONS
          • oceanbase.DBA_IND_STATISTICS
          • oceanbase.DBA_IND_SUBPARTITIONS
          • DBA_INDEX_USAGE
          • DBA_MVIEW_LOGS
          • 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
          • oceanbase.DBA_OB_ACCESS_POINT
          • 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
          • DBA_OB_CLONE_HISTORY
          • DBA_OB_CLONE_PROGRESS
          • oceanbase.DBA_OB_CLUSTER_EVENT_HISTORY
          • oceanbase.DBA_OB_CONCURRENT_LIMIT_SQL
          • 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_EXTERNAL_TABLE_FILES
          • 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_MAJOR_COMPACTION
          • 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_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_SEQUENCE_OBJECTS
          • oceanbase.DBA_OB_SERVER_EVENT_HISTORY
          • oceanbase.DBA_OB_SERVER_JOBS
          • oceanbase.DBA_OB_SERVERS
          • 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_TENANT_EVENT_HISTORY
          • 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_ZONE_MAJOR_COMPACTION
          • oceanbase.DBA_OB_ZONES
          • 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_RSRC_CONSUMER_GROUPS
          • oceanbase.DBA_RSRC_GROUP_MAPPINGS
          • oceanbase.DBA_RSRC_PLAN_DIRECTIVES
          • oceanbase.DBA_RSRC_PLANS
          • oceanbase.DBA_SCHEDULER_JOBS
          • 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_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_DTL_INTERM_RESULT_MONITOR
          • GV$OB_FLT_TRACE_CONFIG
          • GV$OB_IO_BENCHMARK
          • GV$OB_IO_CALIBRATION_STATUS
          • GV$OB_KVCACHE
          • GV$OB_LOG_STAT
          • GV$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_SERVER_SCHEMA_INFO
          • GV$OB_SERVERS
          • GV$OB_SESS_TIME_MODEL
          • GV$OB_SESSION
          • GV$OB_SQL_AUDIT
          • 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$OB_SYS_TIME_MODEL
          • GV$OB_TABLET_COMPACTION_HISTORY
          • GV$OB_TABLET_COMPACTION_PROGRESS
          • GV$OB_TENANT_MEMORY
          • GV$OB_TENANT_RUNTIME_INFO
          • GV$OB_TRANSACTION_PARTICIPANTS
          • GV$OB_UNITS
          • GV$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$SYSTEM_EVENT
          • GV$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$ENCRYPTED_TABLESPACES
          • V$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$OB_DTL_INTERM_RESULT_MONITOR
          • V$OB_ENCRYPTED_TABLES
          • V$OB_IO_BENCHMARK
          • V$OB_IO_CALIBRATION_STATUS
          • V$OB_KVCACHE
          • V$OB_LOG_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$OB_SERVER_SCHEMA_INFO
          • V$OB_SERVERS
          • V$OB_SESS_TIME_MODEL
          • V$OB_SESSION
          • V$SESSION_EVENT
          • V$OB_SQL_AUDIT
          • V$SQL_JOIN_FILTER
          • V$OB_SQL_PLAN
          • V$OB_SQL_WORKAREA_MEMORY_INFO
          • V$OB_SQLSTAT
          • V$OB_SSTABLES
          • V$OB_SYS_TIME_MODEL
          • V$OB_TABLET_COMPACTION_HISTORY
          • V$OB_TABLET_COMPACTION_PROGRESS
          • V$OB_TENANT_MEMORY
          • V$OB_TENANT_RUNTIME_INFO
          • V$OB_TIMESTAMP_SERVICE
          • V$OB_TRANSACTION_PARTICIPANTS
          • V$OB_UNITS
          • V$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
      • 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.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.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.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
          • DBA_INDEX_USAGE
          • DBA_MVIEW_LOGS
          • 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
          • oceanbase.DBA_OB_ACCESS_POINT
          • 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_DATA_DICTIONARY_IN_LOG
          • oceanbase.DBA_OB_DATABASE_PRIVILEGE
          • oceanbase.DBA_OB_DATABASES
          • oceanbase.DBA_OB_DEADLOCK_EVENT_HISTORY
          • oceanbase.DBA_OB_EXTERNAL_TABLE_FILES
          • 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_MAJOR_COMPACTION
          • 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_RESTORE_HISTORY
          • oceanbase.DBA_OB_RESTORE_PROGRESS
          • oceanbase.DBA_OB_RSRC_IO_DIRECTIVES
          • oceanbase.DBA_OB_SEQUENCE_OBJECTS
          • 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_TENANT_EVENT_HISTORY
          • 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
          • oceanbase.DBA_OB_USER_DEFINED_RULES
          • oceanbase.DBA_OB_USERS
          • 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_RSRC_CONSUMER_GROUPS
          • oceanbase.DBA_RSRC_GROUP_MAPPINGS
          • oceanbase.DBA_RSRC_PLAN_DIRECTIVES
          • oceanbase.DBA_RSRC_PLANS
          • oceanbase.DBA_SCHEDULER_JOBS
          • 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_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$OB_DTL_INTERM_RESULT_MONITOR
          • GV$OB_FLT_TRACE_CONFIG
          • GV$OB_KVCACHE
          • GV$OB_LOG_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$OB_SERVER_SCHEMA_INFO
          • GV$OB_SERVERS
          • GV$OB_SESS_TIME_MODEL
          • GV$OB_SESSION
          • GV$OB_SQL_AUDIT
          • GV$SQL_JOIN_FILTER
          • GV$OB_SQL_PLAN
          • GV$OB_SQL_WORKAREA_MEMORY_INFO
          • GV$OB_SQLSTAT
          • GV$OB_SSTABLES
          • GV$OB_SYS_TIME_MODEL
          • GV$OB_TABLET_COMPACTION_HISTORY
          • GV$OB_TABLET_COMPACTION_PROGRESS
          • GV$OB_TENANT_MEMORY
          • GV$OB_TRANSACTION_PARTICIPANTS
          • GV$OB_UNITS
          • 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_DTL_INTERM_RESULT_MONITOR
          • V$OB_ENCRYPTED_TABLES
          • V$ENCRYPTED_TABLESPACES
          • V$OB_KVCACHE
          • V$OB_LOG_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$RSRC_PLAN
          • V$OB_SERVER_SCHEMA_INFO
          • V$OB_SERVERS
          • V$OB_SESS_TIME_MODEL
          • V$OB_SESSION
          • V$SESSION_EVENT
          • V$OB_SQL_AUDIT
          • V$SQL_JOIN_FILTER
          • V$OB_SQL_PLAN
          • V$OB_SQL_WORKAREA_MEMORY_INFO
          • V$OB_SQLSTAT
          • V$OB_SSTABLES
          • V$OB_SYS_TIME_MODEL
          • V$OB_TABLET_COMPACTION_HISTORY
          • V$OB_TABLET_COMPACTION_PROGRESS
          • V$OB_TENANT_MEMORY
          • V$OB_TIMESTAMP_SERVICE
          • V$OB_TRANSACTION_PARTICIPANTS
          • V$OB_UNITS
          • V$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_PART_COL_STATISTICS
          • ALL_PART_HISTOGRAMS
          • ALL_PART_INDEXES
          • 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_LOGS
          • 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_DATA_DICTIONARY_IN_LOG
          • DBA_OB_DATABASE_PRIVILEGE
          • DBA_OB_DATABASES
          • DBA_OB_DEADLOCK_EVENT_HISTORY
          • DBA_OB_EXTERNAL_TABLE_FILES
          • 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_LS_REPLICA_TASKS
          • DBA_OB_MAJOR_COMPACTION
          • 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_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_TENANTS
          • DBA_OB_TRANSFER_PARTITION_TASKS
          • 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_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_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
          • 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_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_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$OB_DTL_INTERM_RESULT_MONITOR
          • GV$OB_FLT_TRACE_CONFIG
          • GV$OB_GLOBAL_TRANSACTION
          • GV$OB_KVCACHE
          • GV$OB_LOG_STAT
          • GV$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$OB_SERVER_SCHEMA_INFO
          • GV$OB_SESS_TIME_MODEL
          • GV$OB_SESSION
          • GV$OB_SQL_AUDIT
          • GV$SQL_JOIN_FILTER
          • GV$OB_SQL_PLAN
          • GV$OB_SQL_WORKAREA_MEMORY_INFO
          • GV$OB_SQLSTAT
          • GV$OB_SSTABLES
          • GV$OB_SYS_TIME_MODEL
          • GV$OB_TABLET_COMPACTION_HISTORY
          • GV$OB_TABLET_COMPACTION_PROGRESS
          • GV$OB_TENANT_MEMORY
          • GV$OB_TRANSACTION_PARTICIPANTS
          • GV$OB_UNITS
          • GV$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$OB_DTL_INTERM_RESULT_MONITOR
          • V$OB_GLOBAL_TRANSACTION
          • V$OB_KVCACHE
          • V$OB_LOG_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_SERVER_SCHEMA_INFO
          • V$OB_SESS_TIME_MODEL
          • V$OB_SESSION
          • V$OB_SQL_PLAN
          • V$OB_SQL_WORKAREA_MEMORY_INFO
          • V$OB_SQLSTAT
          • V$OB_SYS_TIME_MODEL
          • V$OB_TABLET_COMPACTION_HISTORY
          • V$OB_TABLET_COMPACTION_PROGRESS
          • V$OB_TIMESTAMP_SERVICE
          • V$OB_TRANSACTION_PARTICIPANTS
          • 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$SQL_JOIN_FILTER
          • V$SQL_MONITOR_STATNAME
          • V$SQL_PLAN_MONITOR
          • V$SQL_WORKAREA
          • V$SQL_WORKAREA_ACTIVE
          • V$SQL_WORKAREA_HISTOGRAM
          • V$OB_SSTABLES
          • V$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
      • Common statistical events
      • General wait events
    • Parameters and system variables
      • Overview
      • Parameters
        • Overview
        • Cluster-level parameters
          • all_cluster_list
          • all_server_list
          • auto_broadcast_location_cache_rate_limit
          • auto_leader_switch_interval
          • auto_refresh_location_cache_rate_limit
          • autoinc_cache_refresh_interval
          • 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_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_freeze_trigger
          • enable_log_archive
          • 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
          • fast_recovery_concurrency
          • flush_log_at_trx_commit
          • fuse_row_cache_priority
          • gc_wait_archive
          • get_leader_candidate_rpc_timeout
          • 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
          • 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
          • obconfig_url
          • observer_id
          • 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
          • rdma_io_thread_count
          • 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
          • 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
          • 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
          • 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
          • audit_sys_operations
          • audit_trail
          • backup_data_file_size
          • balancer_idle_time
          • 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_progressive_merge_num
          • default_table_store_format
          • dump_data_dictionary_to_log_interval
          • enable_clog_persistence_compress
          • enable_early_lock_release
          • enable_kv_ttl
          • enable_monotonic_weak_read
          • enable_rebalance
          • enable_sql_extension
          • enable_transfer
          • enable_user_defined_rewrite_rules
          • external_kms_info
          • freeze_trigger_percentage
          • ha_high_thread_score
          • ha_low_thread_score
          • ha_mid_thread_score
          • io_category_config
          • job_queue_processes
          • kv_ttl_duty_duration
          • kv_ttl_history_recycle_interval
          • 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
          • major_compact_trigger
          • major_freeze_duty_time
          • max_partition_num
          • max_stale_time_for_weak_consistency
          • merger_check_interval
          • minor_compact_trigger
          • ob_compaction_schedule_interval
          • ob_enable_batched_multi_statement
          • ob_proxy_readonly_transaction_routing_policy
          • ob_query_switch_leader_retry_timeout
          • ob_ssl_invited_common_names
          • open_cursors
          • optimizer_index_cost_adj
          • partition_balance_schedule_interval
          • plsql_code_type
          • plsql_debug
          • plsql_optimize_level
          • plsql_v2_compatibility
          • query_response_time_flush
          • query_response_time_range_base
          • query_response_time_stats
          • range_optimizer_max_mem_size
          • rpc_memory_limit_percentage
          • sql_work_area
          • standby_db_fetch_log_rpc_timeout
          • standby_db_preferred_upstream_log_region
          • tde_method
          • tenant_sql_login_thread_count
          • tenant_sql_net_thread_count
          • ttl_thread_score
          • undo_retention
          • workarea_size_policy
          • writing_throttling_maximum_duration
          • writing_throttling_trigger_percentage
      • System variables
        • Overview of system variables
        • 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
          • 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
          • debug_sync
          • default_password_lifetime
          • default_storage_engine
          • div_precision_increment
          • error_on_overlap_time
          • event_scheduler
          • explicit_defaults_for_timestamp
          • foreign_key_checks
          • group_concat_max_len
          • identity
          • init_connect
          • innodb_strict_mode
          • interactive_timeout
          • license
          • lc_time_names
          • log_row_value_options
          • lower_case_table_names
          • max_allowed_packet
          • max_connections
          • max_sp_recursion_depth
          • max_user_connections
          • 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_create_table_strict_mode
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Overview of system views

Last Updated:2026-04-15 08:25:15  Updated
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What is on this page
Overview of views in the sys tenant
Overview of dictionary views
Overview of the performance view
Views in a MySQL tenant
Overview of dictionary views
Overview of the performance view
Views in an Oracle tenant
Dictionary view overview
Overview of the performance view

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Overview of system views

Overview of views in the sys tenant

Overview of dictionary views

Tables and columns

View name Description
oceanbase.CDB_IND_COLUMNS Displays the column information of index tables in all tenants.
oceanbase.CDB_INDEXES Displays the index information of all tenants.
oceanbase.CDB_TABLES Displays the table information of all tenants.
oceanbase.CDB_OB_TABLEGROUP_TABLES Displays the associations between table groups and tables in the sys tenant. Tables not in a table group are not displayed.
oceanbase.CDB_TAB_COLS Displays the column information of tables and views in all tenants.
oceanbase.CDB_TAB_COLS_V$ Displays the column information of tables and views in all tenants.
oceanbase.DBA_OB_TABLEGROUP_TABLES Displays the associations between table groups and tables. Tables not in a table group are not displayed.
oceanbase.DBA_PART_KEY_COLUMNS Displays the columns that are part of the partitioning key of all partitioned objects in the database.
oceanbase.DBA_SUBPART_KEY_COLUMNS Displays the columns that are part of the subpartitioning key of all subpartitioned objects in the database.
oceanbase.CDB_OB_COLUMN_CHECKSUM_ERROR_INFO Displays information about column checksum inconsistencies between index tables (including global indexes and local indexes) and primary tables.
oceanbase.CDB_OB_TABLE_LOCATIONS Displays the locations of tables or partitions, including system tables, user tables, and index tables.
oceanbase.DBA_OB_TABLE_LOCATIONS Displays the locations of tables or partitions, including system tables, user tables, and index tables.

Outline

View name Description
oceanbase.DBA_OB_OUTLINES Displays the outline information of execution plans for the current tenant.
oceanbase.DBA_OB_CONCURRENT_LIMIT_SQL Displays the outline information of concurrency limit rules for the current tenant.
oceanbase.DBA_OB_OUTLINE_CONCURRENT_HISTORY Displays the history information of execution plans and concurrency limit rules outlines for the current tenant.

Basic information about the databases

View name Description
oceanbase.CDB_OB_DATABASES Displays the metadata of all tenants in a system tenant.
oceanbase.CDB_OB_MAJOR_COMPACTION Displays the global major compaction information of all tenants in a system tenant.
oceanbase.CDB_OB_ZONE_MAJOR_COMPACTION Displays the major compaction information of all zones of all tenants in a system tenant.
oceanbase.DBA_OB_DATABASES Displays the metadata of the tenant.
oceanbase.DBA_OB_MAJOR_COMPACTION Displays the global major compaction information of the tenant.
oceanbase.DBA_OB_ROOTSERVICE_EVENT_HISTORY Displays the event history of the Root Service.
oceanbase.DBA_OB_SERVER_JOBS Displays the tasks of all OBServer nodes.
oceanbase.DBA_OB_SERVERS Displays the information of all OBServer nodes.
oceanbase.DBA_OB_ZONE_MAJOR_COMPACTION Displays the major compaction information of all zones of the tenant.
oceanbase.DBA_OB_ZONES Displays the information of all zones.
oceanbase.CDB_OB_FREEZE_INFO Displays the version information generated by major compactions (major_freeze).
oceanbase.DBA_OB_FREEZE_INFO Displays the version information generated by major compactions (major_freeze).

Partition-related

View name Description
oceanbase.CDB_IND_PARTITIONS Displays the partition information of index tables of all tenants.
oceanbase.CDB_PART_INDEXES Displays the partition information of index tables of all tenants.
oceanbase.CDB_PART_TABLES Displays the partition information of partitioned tables of all tenants.
oceanbase.CDB_SUBPARTITION_TEMPLATES Displays the template-based subpartition information of partitioned tables of all tenants.
oceanbase.CDB_TAB_PARTITIONS Displays the partition information of partitioned tables of all tenants.
oceanbase.CDB_TAB_SUBPARTITIONS Displays the subpartition information of partitioned tables of all tenants.
oceanbase.DBA_IND_PARTITIONS Displays the partition and subpartition information of indexes.
oceanbase.DBA_PART_INDEXES Displays the partition information of all indexes.
oceanbase.DBA_PART_TABLES Displays the partition information of user tables.
oceanbase.DBA_TAB_PARTITIONS Displays the partition and subpartition information that the current user has access to, along with the partition storage parameters and statistics.
oceanbase.DBA_TAB_SUBPARTITIONS Displays the subpartition name, the table name, the partition name to which the subpartition belongs, the storage attributes of the subpartition, and the statistics generated by the DBMS_STATS package.
oceanbase.DBA_SUBPARTITION_TEMPLATES Displays the description of all subpartition templates.

Load balancing-related

View name Description
oceanbase.CDB_OB_TRANSFER_PARTITION_TASKS Displays the partition transfer tasks being processed by all tenants.
oceanbase.CDB_OB_TRANSFER_PARTITION_TASK_HISTORY Displays the history of partition transfer tasks executed by all tenants.
oceanbase.DBA_OB_TRANSFER_PARTITION_TASKS Displays the partition transfer tasks being processed by the current tenant.
oceanbase.DBA_OB_TRANSFER_PARTITION_TASK_HISTORY Displays the history of partition transfer tasks executed by the current tenant.

Session-related

View name Description
oceanbase.CDB_OB_DEADLOCK_EVENT_HISTORY Displays the history records of deadlocks. This view shows the history records of all tenants in the root tenant.
oceanbase.DBA_OB_DEADLOCK_EVENT_HISTORY Displays the history records of deadlocks. This view shows the history records of the current tenant in a non-root tenant.
oceanbase.DBA_OB_SERVER_EVENT_HISTORY Displays the event history information of OBServer nodes.

Backup and restore-related

View name Description
oceanbase.CDB_OB_RESTORE_PROGRESS Displays the progress of ongoing physical restore tasks.
oceanbase.CDB_OB_RESTORE_HISTORY Displays the status of completed physical restore tasks.
oceanbase.CDB_OB_ARCHIVELOG_PIECE_FILES Displays the status of pieces in backup sets.
oceanbase.CDB_OB_BACKUP_SET_FILES Displays the status of files in backup sets.
oceanbase.CDB_OB_BACKUP_JOBS Displays the backup jobs of all tenants in the cluster. A job record is generated after a backup job is initiated.
oceanbase.CDB_OB_BACKUP_JOB_HISTORY Displays the backup job history of all tenants in the cluster.
oceanbase.CDB_OB_BACKUP_TASKS Displays the task-level backup tasks of all tenants in the cluster. A task record is generated for each backup_set backup. The task record and job record are in a one-to-one correspondence.
oceanbase.CDB_OB_BACKUP_TASK_HISTORY Displays the history of task-level backup tasks of all tenants in the cluster.
oceanbase.DBA_OB_BACKUP_JOBS Displays the backup jobs of the current tenant.
oceanbase.DBA_OB_BACKUP_JOB_HISTORY Displays the backup job history of the current tenant.
oceanbase.DBA_OB_BACKUP_TASKS Displays the backup tasks of the current tenant.
oceanbase.DBA_OB_BACKUP_TASK_HISTORY Displays the history of backup tasks of the current tenant.
oceanbase.DBA_OB_BACKUP_SET_FILES Displays the status of files in backup sets.
oceanbase.DBA_OB_RESTORE_PROGRESS Displays the restore tasks in progress.
oceanbase.DBA_OB_RESTORE_HISTORY Displays the completed restore tasks.
oceanbase.DBA_OB_ARCHIVE_DEST Displays the configurations of archive paths.
oceanbase.CDB_OB_ARCHIVE_DEST Displays the configurations of archive paths.
oceanbase.CDB_OB_BACKUP_PARAMETER Displays the backup parameters.
oceanbase.CDB_OB_BACKUP_DELETE_JOBS Displays the progress of tenant-level backup cleanup jobs.
oceanbase.CDB_OB_BACKUP_DELETE_JOB_HISTORY Displays the history of completed backup cleanup jobs in the tenant.
oceanbase.CDB_OB_BACKUP_DELETE_TASKS Displays the information about backup_set/backup_piece deletion tasks that are being executed in the tenant.
oceanbase.CDB_OB_BACKUP_DELETE_TASK_HISTORY Displays the history of completed backup_set/backup_piece deletion tasks in the tenant.
oceanbase.CDB_OB_BACKUP_DELETE_POLICY Displays the deletion policies that are set for automatic or expiration-based cleanup in the tenant.
oceanbase.CDB_OB_BACKUP_STORAGE_INFO Displays the information about backup destinations used for backup and restore in the tenant.
oceanbase.CDB_OB_BACKUP_STORAGE_INFO_HISTORY Displays the history of backup destinations used for backup and restore in the tenant.
oceanbase.DBA_OB_BACKUP_STORAGE_INFO Displays the information about backup destinations used for backup and restore in the tenant.
oceanbase.DBA_OB_BACKUP_STORAGE_INFO_HISTORY Displays the history of backup destinations used for backup and restore in the tenant.
oceanbase.DBA_OB_BACKUP_DELETE_POLICY Displays the deletion policies that are set for automatic or expiration-based cleanup in the tenant.
oceanbase.DBA_OB_BACKUP_DELETE_JOBS Displays the progress of tenant-level backup cleanup jobs.
oceanbase.DBA_OB_BACKUP_DELETE_JOB_HISTORY Displays the history of completed backup cleanup jobs in the tenant.
oceanbase.DBA_OB_BACKUP_DELETE_TASKS Displays the information about backup_set/backup_piece deletion tasks that are being executed in the tenant.
oceanbase.DBA_OB_BACKUP_DELETE_TASK_HISTORY Displays the history of completed backup_set/backup_piece deletion tasks in the tenant.
oceanbase.DBA_OB_ARCHIVELOG Displays the status of log backup for each archive path.
oceanbase.DBA_OB_ARCHIVELOG_SUMMARY Displays the status of all historical and current log backups.
oceanbase.DBA_OB_ARCHIVELOG_PIECE_FILES Displays the status of pieces in backup sets.
oceanbase.CDB_OB_ARCHIVELOG Displays the status of log archiving for each archive path.
oceanbase.CDB_OB_ARCHIVELOG_SUMMARY Displays the status of all historical and current log archiving.
oceanbase.CDB_OB_RECOVER_TABLE_JOBS Displays information about table-level restore jobs.
oceanbase.DBA_OB_RECOVER_TABLE_JOBS Displays information about table-level restore jobs.
oceanbase.CDB_OB_IMPORT_TABLE_JOBS Displays information about import jobs.
oceanbase.DBA_OB_IMPORT_TABLE_JOBS Displays information about import jobs.
oceanbase.CDB_OB_IMPORT_TABLE_TASKS Displays records of table-level cross-tenant import jobs.
oceanbase.DBA_OB_IMPORT_TABLE_TASKS Displays records of table-level import jobs.
oceanbase.CDB_OB_RECOVER_TABLE_JOB_HISTORY Displays the results of table-level restore jobs.
oceanbase.DBA_OB_RECOVER_TABLE_JOB_HISTORY Displays the results of table-level restore jobs.
oceanbase.CDB_OB_IMPORT_TABLE_JOB_HISTORY Displays the results of import jobs.
oceanbase.DBA_OB_IMPORT_TABLE_JOB_HISTORY Displays the results of import jobs.
oceanbase.CDB_OB_IMPORT_TABLE_TASK_HISTORY Displays the history of table-level cross-tenant import jobs.
oceanbase.DBA_OB_IMPORT_TABLE_TASK_HISTORY Displays the history of table-level import jobs.

Statistics and histograms

View name Description
oceanbase.DBA_TAB_STATISTICS Displays optimizer statistics for all tables in the database.
oceanbase.DBA_TAB_COL_STATISTICS Displays column statistics and histograms for all tables in the database.
oceanbase.DBA_PART_COL_STATISTICS Displays column statistics and histograms for all partitioned tables in the database.
oceanbase.DBA_SUBPART_COL_STATISTICS Displays column statistics and histograms for all subpartitioned tables in the database.
oceanbase.DBA_TAB_HISTOGRAMS Displays histograms for all columns in all tables in the database.
oceanbase.DBA_PART_HISTOGRAMS Displays histogram endpoint data for all partitioned tables in the database.
oceanbase.DBA_SUBPART_HISTOGRAMS Displays histogram endpoint data for all subpartitioned tables in the database.
oceanbase.DBA_TAB_STATS_HISTORY Displays the statistical history of all tables in the database.
oceanbase.DBA_IND_STATISTICS Displays optimizer statistics for all indexes in the database.
oceanbase.DBA_TAB_MODIFICATIONS Displays the modification information of all tables in the database since the last time statistics were collected for these tables.
oceanbase.CDB_TAB_COL_STATISTICS Displays column-level statistics in the sys tenant.

Tenant-related

View name Description
oceanbase.DBA_OBJECTS Displays all database objects in the tenant. The view definition is the same as that of ALL_OBJECTS.
oceanbase.CDB_OBJECTS Displays the objects of all tenants in the sys tenant.
oceanbase.DBA_OB_TENANTS Displays basic information about all tenants, including system tenants, user tenants, and meta tenants. You can identify the tenant type by using the TENANT_TYPE column.
oceanbase.DBA_OB_TENANT_JOBS Displays information about tenant-level jobs.
oceanbase.CDB_OB_SYS_VARIABLES Displays the system variables of all tenants in the sys tenant.

Resource-related

View name Description
oceanbase.DBA_OB_RESOURCE_POOLS Displays the resource pools of all tenants.
oceanbase.DBA_OB_UNIT_JOBS Displays all unit-related jobs.
oceanbase.DBA_OB_UNITS Displays the units of all tenants.
oceanbase.DBA_OB_UNIT_CONFIGS Displays the specifications of all units.
oceanbase.DBA_OB_SEQUENCE_OBJECTS Displays all sequences in the database.

Views related to replicas and logs

View Description
oceanbase.CDB_IND_SUBPARTITIONS Displays information about all index subpartitions in the database.
oceanbase.CDB_OB_LS_LOCATIONS Displays the distribution of log stream (LS) replicas for all tenants.
oceanbase.CDB_OB_TABLEGROUPS Displays the metadata of all table groups in the sys tenant, including the partition information of the table groups.
oceanbase.CDB_OB_TABLEGROUP_PARTITIONS Displays the primary partitions of all partitioned table groups in the sys tenant.
oceanbase.CDB_OB_TABLEGROUP_SUBPARTITIONS Displays the subpartitions of all partitioned table groups in the sys tenant.
oceanbase.CDB_OB_TABLET_TO_LS Displays the tables and the LS to which each tablet belongs for all tenants in the sys tenant.
oceanbase.CDB_OB_TABLET_REPLICAS Displays information about all tablet replicas in the current tenant. Each tablet replica is uniquely identified by a composite key: <TENANT_ID, TABLET_ID, SVR_IP, SVR_PORT, LS_ID>.
oceanbase.CDB_PART_KEY_COLUMNS Displays the partitioning keys of partitioned objects (partitioned tables and partitioned indexes) in all tenants.
oceanbase.CDB_SUBPART_KEY_COLUMNS Displays the subpartitioning keys of partitioned objects (partitioned tables and partitioned indexes) in all tenants.
oceanbase.DBA_IND_SUBPARTITIONS Displays information about all index subpartitions in the database.
oceanbase.DBA_OB_TABLEGROUP_PARTITIONS Displays the primary partitions of partitioned table groups.
oceanbase.DBA_OB_TABLEGROUP_SUBPARTITIONS Displays the subpartitions of partitioned table groups.
oceanbase.DBA_OB_TABLEGROUPS Displays the metadata of table groups, including the partition information of the table groups.
oceanbase.DBA_OB_TABLET_REPLICAS Displays information about all tablet replicas in the current tenant. Each tablet replica is uniquely identified by a composite key: <TABLET_ID, SVR_IP, SVR_PORT, LS_ID>.
oceanbase.DBA_OB_TABLET_TO_LS Displays the tables and the LS to which each tablet belongs for all tenants in the sys tenant.
oceanbase.DBA_OB_LS_LOCATIONS Displays the distribution of log stream (LS) replicas for the current tenant.
oceanbase.CDB_OB_TABLET_CHECKSUM_ERROR_INFO Displays information about data inconsistencies detected between tablet replicas.
oceanbase.CDB_OB_LS Displays the status and restore progress of log streams.
oceanbase.DBA_OB_LS Displays the status and restore progress of log streams.

WR-related

View name Description
oceanbase.DBA_WR_SNAPSHOT Displays the SNAPSHOT information of the current tenant.
oceanbase.CDB_WR_SNAPSHOT Displays the SNAPSHOT information of all tenants.
oceanbase.DBA_WR_ACTIVE_SESSION_HISTORY Displays the ASH data of the current tenant after it is persisted.
oceanbase.CDB_WR_ACTIVE_SESSION_HISTORY Displays the ASH data of all tenants after it is persisted.
oceanbase.DBA_WR_STATNAME Displays the names of the system statistics of the current tenant.
oceanbase.CDB_WR_STATNAME Displays the names of the system statistics of all tenants.
oceanbase.DBA_WR_SYSSTAT Displays the details of the system statistics of the current tenant.
oceanbase.CDB_WR_SYSSTAT Displays the details of the system statistics of all tenants.
oceanbase.DBA_WR_CONTROL Displays the configuration information related to WR.
oceanbase.CDB_WR_CONTROL Displays the configuration information related to WR.

OBKV-related views

View name Description
oceanbase.CDB_OB_KV_TTL_TASKS Displays all the TTL tasks being executed in all tenants in the sys tenant.
oceanbase.CDB_OB_KV_TTL_TASK_HISTORY Displays the historical TTL tasks of all tenants in the sys tenant.
oceanbase.DBA_OB_KV_TTL_TASKS Displays the TTL tasks being executed in the current tenant.
oceanbase.DBA_OB_KV_TTL_TASK_HISTORY Displays the historical TTL tasks in the current tenant.

Overview of the performance view

Event-related statistics

View name Description
GV$OB_COMPACTION_PROGRESS Displays the major compaction progress information of each OBServer node in the tenant.
GV$OB_COMPACTION_SUGGESTIONS Displays suggestions for major compactions.
GV$OB_PROCESSLIST Displays the session information of all OBServer nodes in the tenant.
GV$OB_COMPACTION_DIAGNOSE_INFO Displays the diagnostic information of major compactions.
GV$OB_TABLET_COMPACTION_HISTORY Displays the history of tablet-level major compactions.
GV$OB_TABLET_COMPACTION_PROGRESS Displays the progress of tablet-level major compactions.
GV$OB_TRANSACTION_PARTICIPANTS Displays the transaction participants on all OBServer nodes.
GV$SESSION_EVENT Displays the wait events at the session level on all OBServer nodes in the cluster.
GV$SESSION_WAIT Displays the name and duration of the current or last wait event of all sessions on all servers, including the server name.
GV$SESSION_WAIT_HISTORY Displays the information of the last 10 wait events of all sessions on all servers.
GV$SYSTEM_EVENT Displays the wait events at the tenant level in the cluster.
GV$SESSTAT The statistics of wait events at the session level on all OBServer nodes.
GV$SYSSTAT Displays the statistics of wait events at the tenant level on all servers.
GV$ACTIVE_SESSION_HISTORY Displays the ASH data.
V$ACTIVE_SESSION_HISTORY Displays the ASH data.
V$OB_COMPACTION_PROGRESS Displays the major compaction progress information of each OBServer node in the tenant.
V$OB_COMPACTION_SUGGESTIONS Displays suggestions for major compactions.
V$OB_PROCESSLIST Displays the session information of the current OBServer node.
V$OB_COMPACTION_DIAGNOSE_INFO Displays the diagnostic information of major compactions.
V$OB_TABLET_COMPACTION_HISTORY Displays the history of tablet-level major compactions.
V$OB_TABLET_COMPACTION_PROGRESS Displays the progress of tablet-level major compactions.
V$OB_TRANSACTION_PARTICIPANTS Displays the transaction participants on all OBServer nodes.
V$STATNAME Displays the definitions of all statistics events.
V$EVENT_NAME Displays the definitions of all statistics events on the current OBServer node.
V$SESSION_WAIT Detailed information on the current wait events for each session. According to the convention, each wait event will have three parameters, and their corresponding values will be recorded.
V$SESSION_WAIT_HISTORY Displays the details of the current wait event of each session and the 10 most recent wait events.
V$SESSTAT Displays the statistics of wait events at the session level.
V$SYSSTAT Displays the statistics of wait events at the tenant level on the current server.
V$SYSTEM_EVENT Displays the statistics of wait events at the tenant level in the cluster.
GV$SESSION_LONGOPS Displays the execution status and progress of DDL operations in the cluster.
V$SESSION_LONGOPS Displays the execution status and progress of DDL operations on the current OBServer node.

Monitoring-related statistics

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.

I/O-related statistics

View name Description
GV$OB_IO_CALIBRATION_STATUS Displays the status of I/O calibration tasks.
V$OB_IO_CALIBRATION_STATUS Displays the status of I/O calibration tasks.
GV$OB_IO_BENCHMARK Displays the disk calibration data used by the I/O module.
V$OB_IO_BENCHMARK Displays the disk calibration data used by the I/O module.

Cache-related statistics

View name Description
GV$OB_MEMORY Displays memory statistics at the tenant level.
V$OB_MEMORY Displays memory statistics at the tenant level.
GV$OB_MEMSTORE Displays the memory usage of MemTables on all servers and all tenants.
V$OB_MEMSTORE Displays the statistics of MemStores at the tenant level.
GV$OB_MEMSTORE_INFO Displays details about MemTables of all partitions of all tenants on all servers.
V$OB_MEMSTORE_INFO Displays details about MemTables of all partitions of all tenants on all servers.
GV$OB_SSTABLES Displays the information about SSTables of a tenant.
V$OB_SSTABLES Displays the information about SSTables of a tenant.
GV$OB_TENANT_MEMORY Displays the memory usage of each tenant in the cluster.
V$OB_TENANT_MEMORY Displays the memory usage of each tenant in the current observer process.

SQL-related statistics

View name Description
GV$OB_PLAN_CACHE_STAT Displays the overall status of each plan cache on all OBServer nodes of the current tenant.
V$OB_PLAN_CACHE_STAT Records the overall status of each plan cache on all servers of the current tenant.
GV$OB_PLAN_CACHE_PLAN_STAT Records the status of each cached object in the plan caches on all servers of the current tenant.
V$OB_PLAN_CACHE_PLAN_STAT Records the status of each cached object in the plan cache on the current server.
GV$OB_PLAN_CACHE_PLAN_EXPLAIN Displays the physical execution plans cached in all servers of the plan caches.
V$OB_PLAN_CACHE_PLAN_EXPLAIN Displays the physical execution plans cached in the plan cache on the current server.
GV$OB_PS_STAT Monitors the overall status of the PS cache, including the hit rate, memory usage, and number of cached items.
V$OB_PS_STAT Monitors the overall status of the PS cache, including the hit rate, memory usage, and number of cached items.
GV$OB_PS_ITEM_INFO Provides monitoring functionality for prepared statements by enabling basic information about all prepared statements in the PS cache to be displayed.
V$OB_PS_ITEM_INFO Provides monitoring functionality for prepared statements by enabling basic information about all prepared statements in the PS cache to be displayed.
GV$OB_PX_P2P_DATAHUB Displays information about data transmission operations in parallel execution.
GV$OB_PX_TARGET_MONITOR Displays the usage of PX threads on all OBServer nodes.
V$OB_PX_TARGET_MONITOR Displays the usage of PX threads on the OBServer node.
GV$OB_SQL_AUDIT Displays the source and execution status of each SQL request on all servers of the current tenant.
V$OB_SQL_AUDIT Displays the source and execution status of each SQL request on the current server.
GV$SQL_PLAN_MONITOR Displays the plan-level statistics of slow queries on all OBServer nodes. A statistics record is generated for each slow query, and the trace information of the plan is recorded.
V$SQL_PLAN_MONITOR Displays the operation-level statistics of slow queries. A statistics record is generated for each operation.
V$SQL_MONITOR_STATNAME Explains the meaning of the numbers in the OTHERSTAT_X_ID field of the GV$SQL_PLAN_MONITOR view.
GV$OB_FLT_TRACE_CONFIG Displays diagnostic information for full-featured tracing.

Log-related statistics

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

Network-related statistics

View name Description
GV$OB_RPC_OUTGOING Displays the statistics of RPC requests sent from all OBServer nodes.
GV$OB_RPC_INCOMING Displays the statistics of RPC requests received by all OBServer nodes.
V$OB_RPC_OUTGOING Statistics of RPC data sent by different tenants on an OBServer node for different RPC packet codes.
V$OB_RPC_INCOMING Statistics of RPC data received by different tenants on an OBServer node for different RPC packet codes.

Sessions

View name Description
GV$OB_SESSION Records information about sessions created on all servers.

Database-related statistics

View name Description
GV$OB_KVCACHE Displays the KVCACHE information on each OBServer node.
GV$OB_PARAMETERS Displays the parameter information on all OBServer nodes within the tenant.
GV$OB_SERVER_SCHEMA_INFO Displays the schema information on all servers.
GV$OB_SERVERS Displays the information about all OBServer nodes.
GV$OB_UNITS Displays the unit information on the OBServer node where the current tenant resides. In the sys tenant, it displays the unit information on all OBServer nodes in the cluster.
V$OB_KVCACHE Displays the KVCACHE information on each OBServer node.
V$OB_PARAMETERS Displays the parameter information on the current OBServer node.
V$OB_SERVER_SCHEMA_INFO Displays the schema information on all servers.
V$OB_SERVERS Displays the information about the current OBServer node.
V$OB_UNITS Displays the units on the current OBServer node.
GV$DML_STATS Displays the DML information in the current user table.
V$DML_STATS Displays the DML information in the current user table.

Statistics on minor and major compactions

View name Description
GV$OB_MERGE_INFO Displays statistics on the minor and major compactions completed in the OceanBase cluster.
V$OB_MERGE_INFO Displays statistics on the minor and major compactions completed in the OceanBase cluster.

Statistics on threads

View name Description
GV$OB_PX_WORKER_STAT In parallel execution scenarios, displays the execution information of each thread.
V$OB_PX_WORKER_STAT In parallel execution scenarios, displays the execution information of each thread.
GV$OB_TENANT_RUNTIME_INFO Displays information about the queue and thread limit of tenant threads.
V$OB_TENANT_RUNTIME_INFO Displays information about the queue and thread limit of tenant threads.

Workarea-related statistics

View name Description
GV$SQL_WORKAREA Statistics of the workareas of all operators for which SQL automatic memory management was responsible.
GV$SQL_WORKAREA_ACTIVE Information about the workareas of active operators.
GV$SQL_WORKAREA_HISTOGRAM Statistics of all workareas, such as the number of times that data in the range of 1 MB to 2 MB was fully processed in memory and the number of one-pass operations.
GV$OB_SQL_WORKAREA_MEMORY_INFO Queries overall statistics of SQL workareas, such as the maximum available memory, the current memory usage, and the memory held.
V$SQL_WORKAREA Statistics of the workareas of all operators for which SQL automatic memory management was responsible.
V$SQL_WORKAREA_ACTIVE Information about the workareas of active operators.
V$SQL_WORKAREA_HISTOGRAM Statistics of all workareas, such as the number of times that data in the range of 1 MB to 2 MB was fully processed in memory and the number of one-pass operations.
V$OB_SQL_WORKAREA_MEMORY_INFO Queries overall statistics of SQL workareas, including the maximum available memory, the current memory usage, and the memory held.

Statistics on encrypted tables

View name Description
V$OB_ENCRYPTED_TABLES Displays the encryption status of tables with the encryption feature enabled.
V$ENCRYPTED_TABLESPACES Displays the encryption status of tablespaces with the encryption feature enabled.

Statistics on transactions

View name Description
GV$LATCH Displays the latch information of all OBServer nodes in the cluster.
V$LATCH Displays the latch information of all OBServer nodes in the cluster.

Views in a MySQL tenant

Overview of dictionary views

Help command

View name Description
mysql.help_topic Works with the other three tables mysql.help_category, mysql.help_relation, and mysql.help_keyword to generate the Help command.
mysql.help_category Works with the other three tables mysql.help_relation, mysql.help_topic, and mysql.help_keyword to generate the Help command.
mysql.help_keyword Works with the other three tables mysql.help_relation, mysql.help_topic, and mysql.help_category to generate the Help command.
mysql.help_relation Works with the other three tables mysql.help_category, mysql.help_topic, and mysql.help_keyword to generate the Help command.

SPM-related

View name Description
oceanbase.DBA_SQL_PLAN_BASELINES Displays the plan baselines of SQL statements in SPM.
oceanbase.DBA_SQL_MANAGEMENT_CONFIG Displays the configuration parameters in SPM.

Privilege-related

View name Description
mysql.db Displays database-level privilege information (VIRTUAL_TABLE).
mysql.user Records user-level privilege information (VIRTUAL_TABLE).
information_schema.COLUMN_PRIVILEGES Displays column privilege information.
information_schema.SCHEMA_PRIVILEGES Describes database privilege information.
information_schema.TABLE_PRIVILEGES Records table privilege information.
information_schema.USER_PRIVILEGES Records user privilege information.

OBKV-related

View name Description
oceanbase.DBA_OB_KV_TTL_TASKS Displays the TTL tasks that are currently being executed in the tenant.
oceanbase.DBA_OB_KV_TTL_TASK_HISTORY Displays the TTL tasks that have been executed in the tenant.

Scheduler

View name Description
oceanbase.DBA_SCHEDULER_JOBS Displays information about all scheduled jobs in the database.

Storage-related

View name Description
mysql.proc Displays information about stored procedures.
information_schema.ENGINES Records information about storage engines.
information_schema.PARAMETERS Provides information about parameters and return values of stored procedures.
information_schema.ROUTINES Provides information about stored procedures.

Time zone-related

View name Description
mysql.time_zone Displays time zone-related information (SYSTEM_VIEW).
mysql.time_zone_name Records the names of time zones (SYSTEM_VIEW).
mysql.time_zone_transition The mysql.time_zone_transition view records the time zone transition information.
mysql.time_zone_transition_type Records the types of time zone transitions (SYSTEM_VIEW).

Character sets

View name Description
information_schema.CHARACTER_SETS Records the character sets supported by OceanBase Database.
information_schema.COLLATIONS Records the collations for each character set.
information_schema.COLLATION_CHARACTER_SET_APPLICABILITY Records the correspondence between character sets and collations.

Tables and columns

View name Description
information_schema.COLUMNS Records column information.
information_schema.STATISTICS Records index information of tables.
information_schema.TABLES Records information about tables.
information_schema.VIEWS Records information about views.
information_schema.VIEW_TABLE_USAGE Displays information about tables and views used in view definitions.
oceanbase.DBA_OB_TABLEGROUP_TABLES Displays the relationship between table groups and tables. Tables not belonging to any table group are not displayed.
oceanbase.DBA_PART_KEY_COLUMNS Displays the columns that are part of the partitioning key of all partitioned objects in the database.
oceanbase.DBA_SUBPART_KEY_COLUMNS Displays the columns that are part of the subpartitioning key of all subpartitioned objects in the database.
oceanbase.DBA_OB_TABLE_LOCATIONS Displays the locations of tables or partitions, including system tables, user tables, and index tables.

Outline

View Name Description
oceanbase.DBA_OB_OUTLINES Displays the outline information of execution plans for the current tenant.
oceanbase.DBA_OB_CONCURRENT_LIMIT_SQL Displays the outline information of concurrency limit rules for the current tenant.
oceanbase.DBA_OB_OUTLINE_CONCURRENT_HISTORY Displays the history information of execution plans and concurrency limit rules outlines for the current tenant.

Basic database information

View Name Description
information_schema.GLOBAL_STATUS Records the global status information of OceanBase Database.
information_schema.GLOBAL_VARIABLES Records the global variable information.
information_schema.SCHEMATA Records the metadata of databases.
oceanbase.DBA_OB_DATABASES Displays the metadata of databases for the current tenant.
oceanbase.DBA_OB_MAJOR_COMPACTION Displays the global major compaction information for the current tenant.
oceanbase.DBA_OB_ZONE_MAJOR_COMPACTION Displays the major compaction information for each zone of the current tenant.
oceanbase.DBA_OB_FREEZE_INFO Displays the version information generated by major compactions (major_freeze).

Partition-related

View name Description
information_schema.PARTITIONS Records information about partitions.
oceanbase.DBA_IND_PARTITIONS Displays information about the partitions and subpartitions of indexes.
oceanbase.DBA_PART_INDEXES Displays information about the partitions of all partitioned indexes.
oceanbase.DBA_PART_TABLES Displays information about the partitions of user tables.
oceanbase.DBA_TAB_PARTITIONS Displays information about the partitions and subpartitions to which the current user has access, as well as the storage parameters and statistics of the partitions and subpartitions.
oceanbase.DBA_TAB_SUBPARTITIONS Displays the names of subpartitions, the names of the tables to which the subpartitions belong, the names of the partitions to which the subpartitions belong, their storage attributes, and the statistics generated by the DBMS_STATS package.
oceanbase.DBA_SUBPARTITION_TEMPLATES Displays descriptions of all subpartition templates.

Load balancing related

View name Description
oceanbase.DBA_OB_TRANSFER_PARTITION_TASKS Displays the transfer partition tasks being processed in the current tenant.
oceanbase.DBA_OB_TRANSFER_PARTITION_TASK_HISTORY Displays the history of transfer partition tasks that have been executed in the current tenant.

Thread-related

View name Description
information_schema.PROCESSLIST Provides information about running threads.

Constraint-related

View name Description
information_schema.CHECK_CONSTRAINTS Displays the constraints on tables and columns when you execute the CREATE TABLE statement.
information_schema.KEY_COLUMN_USAGE Records the key constraints on columns.
information_schema.REFERENTIAL_CONSTRAINTS Displays the metadata of foreign key constraints.
information_schema.TABLE_CONSTRAINTS Describes the constraints on tables.

Session-related

View name Description
information_schema.SESSION_STATUS Records the status information of sessions, such as the number of active connections and the uptime of the database.
information_schema.SESSION_VARIABLES Records the variables of sessions.
oceanbase.DBA_OB_DEADLOCK_EVENT_HISTORY Displays the history records of deadlocks. This view displays the history records of the current tenant in non-root tenants.

User login-related views

View name Description
information_schema.CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS Displays the number of failed login attempts for each user.

Backup and restore-related

View name Description
oceanbase.DBA_OB_BACKUP_JOBS Displays the backup jobs of the current tenant.
oceanbase.DBA_OB_BACKUP_JOB_HISTORY Displays the history records of the backup jobs of the current tenant.
oceanbase.DBA_OB_BACKUP_TASKS Displays the backup tasks of the current tenant.
oceanbase.DBA_OB_BACKUP_TASK_HISTORY Displays the history records of the backup tasks of the current tenant.
oceanbase.DBA_OB_BACKUP_SET_FILES Displays the status of files in backup sets.
oceanbase.DBA_OB_RESTORE_PROGRESS Displays the ongoing restore tasks.
oceanbase.DBA_OB_RESTORE_HISTORY Displays the completed restore tasks.
oceanbase.DBA_OB_ARCHIVE_DEST Displays the configurations of archive paths.
oceanbase.DBA_OB_BACKUP_STORAGE_INFO Displays the information about backup destinations used for backup and restore in the current tenant.
oceanbase.DBA_OB_BACKUP_STORAGE_INFO_HISTORY Displays the historical information about backup destinations used for backup and restore in the current tenant.
oceanbase.DBA_OB_BACKUP_DELETE_POLICY Displays the cleanup strategies for expired data and automatically cleared data in the current tenant.
oceanbase.DBA_OB_BACKUP_DELETE_JOBS Displays the execution progress of tenant-level backup cleanup jobs.
oceanbase.DBA_OB_BACKUP_DELETE_JOB_HISTORY Displays the historical information of backup cleanup jobs executed in the current tenant.
oceanbase.DBA_OB_BACKUP_DELETE_TASKS Displays the information about backup_set or backup_piece cleanup tasks being executed in the current tenant.
oceanbase.DBA_OB_BACKUP_DELETE_TASK_HISTORY Displays the historical information of backup_set or backup_piece cleanup tasks completed in the current tenant.
oceanbase.DBA_OB_ARCHIVELOG Displays the status of log backup for each path.
oceanbase.DBA_OB_ARCHIVELOG_SUMMARY Displays the status of all log backups, both historical and current.
oceanbase.DBA_OB_ARCHIVELOG_PIECE_FILES Displays the status of pieces in backup sets.
oceanbase.DBA_OB_RECOVER_TABLE_JOBS Displays information about table-level restore jobs.
oceanbase.DBA_OB_IMPORT_TABLE_JOBS Displays information about import jobs.
oceanbase.DBA_OB_IMPORT_TABLE_TASKS Displays records of table-level import tasks.
oceanbase.DBA_OB_RECOVER_TABLE_JOB_HISTORY Displays the results of table-level restore jobs.
oceanbase.DBA_OB_IMPORT_TABLE_JOB_HISTORY Displays the results of import jobs.
oceanbase.DBA_OB_IMPORT_TABLE_TASK_HISTORY Displays the history records of cross-tenant table-level import tasks.

Statistics and histograms

View name Description
oceanbase.DBA_TAB_STATISTICS Displays optimizer statistics of all tables in the database.
oceanbase.DBA_TAB_COL_STATISTICS Displays column statistics and histograms of all tables in the database.
oceanbase.DBA_PART_COL_STATISTICS Displays column statistics and histograms of all partitioned tables in the database.
oceanbase.DBA_SUBPART_COL_STATISTICS Displays column statistics and histograms of all subpartitioned tables in the database.
oceanbase.DBA_TAB_HISTOGRAMS Displays histograms of all columns in all tables in the database.
oceanbase.DBA_PART_HISTOGRAMS Displays histogram endpoint data of all partitioned tables in the database.
oceanbase.DBA_SUBPART_HISTOGRAMS Displays histogram endpoint data of all subpartitioned tables in the database.
oceanbase.DBA_TAB_STATS_HISTORY Displays table statistics history of all tables in the database.
oceanbase.DBA_IND_STATISTICS Displays optimizer statistics of all indexes in the database.
oceanbase.DBA_TAB_MODIFICATIONS Displays the modification information of all tables in the database since the last time statistics were collected on the tables.
information_schema.QUERY_RESPONSE_TIME Displays data types (histograms) such as the response time histogram for monitoring by Prometheus.

Tenant-related

View name Description
oceanbase.DBA_OBJECTS Displays all database objects in the database. The definition is the same as that in the ALL_OBJECTS view.
oceanbase.DBA_OB_TENANTS Displays basic information about all tenants, including system tenants, user tenants created by users, and meta tenants. You can identify the tenant type by using the TENANT_TYPE column.

Resource-related

View name Description
oceanbase.DBA_OB_SEQUENCE_OBJECTS Displays all sequences in the database.

Views related to replicas and logs

View name Description
oceanbase.DBA_IND_SUBPARTITIONS Displays information about all index subpartitions in the database.
oceanbase.DBA_OB_TABLEGROUP_PARTITIONS Displays the primary partitions of table groups.
oceanbase.DBA_OB_TABLEGROUP_SUBPARTITIONS Displays the subpartitions of table groups.
oceanbase.DBA_OB_TABLEGROUPS Displays the metadata of table groups, including the partition information of table groups.
oceanbase.DBA_OB_TABLET_REPLICAS Displays the information about all tablet replicas in the 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 Displays the information about all tablets in the tenant and the log streams to which the tablets belong.
oceanbase.DBA_OB_LS_LOCATIONS Displays the distribution of log stream (LS) replicas in the tenant.

WR-related views

View name Description
oceanbase.DBA_WR_SNAPSHOT Displays the SNAPSHOT information of the current tenant.
oceanbase.DBA_WR_ACTIVE_SESSION_HISTORY Displays the ASH data of the current tenant after it is persisted.
oceanbase.DBA_WR_STATNAME Displays the names of the system statistics of the current tenant.
oceanbase.DBA_WR_SYSSTAT Displays the details of the system statistics of the current tenant.
oceanbase.DBA_WR_CONTROL Displays the configuration information of WR.

Overview of the performance view

Event-related statistics

View name Description
GV$OB_COMPACTION_PROGRESS Displays the major compaction progress information of a tenant on OBServer nodes.
GV$OB_COMPACTION_SUGGESTIONS Displays suggestions for major compactions.
GV$OB_PROCESSLIST Displays the session information on all OBServer nodes of a tenant.
GV$OB_COMPACTION_DIAGNOSE_INFO Displays the diagnostic information of major compactions.
GV$OB_TABLET_COMPACTION_HISTORY Displays the historical information of tablet-level major compactions.
GV$OB_TABLET_COMPACTION_PROGRESS Displays the progress information of tablet-level major compactions.
GV$OB_TRANSACTION_PARTICIPANTS Displays the transaction participants on all OBServer nodes.
GV$SESSION_EVENT Displays the wait events of sessions on all OBServer nodes in the cluster.
GV$SESSION_WAIT Displays information about the current or last wait event of all sessions on all servers, including the name and duration of the wait event.
GV$SESSION_WAIT_HISTORY Displays information about the last 10 wait events of all sessions on all servers.
GV$SYSTEM_EVENT Displays the wait events of all tenants in the cluster.
GV$SESSTAT The statistics of wait events at the session level on all OBServer nodes.
GV$SYSSTAT Displays the statistics of wait events at the tenant level on all servers.
GV$ACTIVE_SESSION_HISTORY Displays the ASH data.
V$ACTIVE_SESSION_HISTORY Displays the ASH data.
V$OB_COMPACTION_PROGRESS Displays the major compaction progress information of a tenant on OBServer nodes.
V$OB_COMPACTION_SUGGESTIONS Displays suggestions for major compactions.
V$OB_PROCESSLIST Displays the session information on the current OBServer node.
V$OB_COMPACTION_DIAGNOSE_INFO Displays the diagnostic information of major compactions.
V$OB_TABLET_COMPACTION_HISTORY Displays the historical information of tablet-level major compactions.
V$OB_TABLET_COMPACTION_PROGRESS Displays the progress information of tablet-level major compactions.
V$OB_TRANSACTION_PARTICIPANTS Displays the transaction participants on all OBServer nodes.
V$STATNAME Displays the definitions of all statistics.
V$EVENT_NAME Displays the definitions of all statistics on the current OBServer node.
V$SESSION_WAIT Displays the details of the current wait event of each session. According to the convention, each wait event has three parameters, and the values of these parameters are recorded.
V$SESSION_WAIT_HISTORY Displays the details of the current wait event of each session and the 10 most recent wait events of each session.
V$SESSTAT Displays the statistics of wait events at the session level.
V$SYSSTAT Displays the statistics of wait events at the tenant level on the current server.
V$SYSTEM_EVENT Displays the statistics of wait events at the tenant level.
GV$SESSION_LONGOPS Displays the execution status and progress of DDL operations in the cluster.
V$SESSION_LONGOPS Displays the execution status and progress of DDL operations on the current OBServer node.

Monitoring-related statistics

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.

Cache-related statistics

View name Description
GV$OB_MEMORY Displays memory statistics at the tenant level.
V$OB_MEMORY Displays memory statistics at the tenant level.
GV$OB_MEMSTORE Displays the memory usage of MemTables on all servers and all tenants.
V$OB_MEMSTORE Displays the statistics of MemStores at the tenant level.
GV$OB_MEMSTORE_INFO Displays details about MemTables, including the number of partitions, size, and memory usage, of all tenants on all servers.
V$OB_MEMSTORE_INFO Displays details about MemTables, including the number of partitions, size, and memory usage, of all tenants on all servers.
GV$OB_SSTABLES Displays the information about SSTables of a tenant.
V$OB_SSTABLES Displays the information about SSTables of a tenant.
GV$OB_TENANT_MEMORY Displays the memory usage of each tenant in a cluster.
V$OB_TENANT_MEMORY Displays the memory usage of each tenant in the current observer process.

SQL-related statistics

View name Description
GV$OB_PLAN_CACHE_STAT Displays the outline information of the current tenant, which is mainly used for outline migration.
V$OB_PLAN_CACHE_STAT Records the overall status of each plan cache on all servers of the current tenant.
GV$OB_PLAN_CACHE_PLAN_STAT Records the status of each cached object in the plan caches on all servers of the current tenant.
V$OB_PLAN_CACHE_PLAN_STAT Records the status of each cached object in the plan cache on the current server.
GV$OB_PLAN_CACHE_PLAN_EXPLAIN Displays the physical execution plans cached in all servers' plan caches.
V$OB_PLAN_CACHE_PLAN_EXPLAIN Displays the physical execution plans cached in the plan cache on the current server.
GV$OB_PS_STAT Monitors the overall status of the PS cache, including the hit ratio, memory usage, and number of items in the cache.
V$OB_PS_STAT Monitors the overall status of the PS cache, including the hit ratio, memory usage, and number of items in the cache.
GV$OB_PS_ITEM_INFO Provides monitoring functionality for prepared statements and contains basic information about all prepared statements in the PS cache.
V$OB_PS_ITEM_INFO Provides monitoring functionality for prepared statements and contains basic information about all prepared statements in the PS cache.
GV$OB_PX_TARGET_MONITOR Displays the usage of PX threads on all OBServer nodes.
V$OB_PX_TARGET_MONITOR Displays the usage of PX threads on the current OBServer node.
GV$OB_SQL_AUDIT Displays the source and execution status of each SQL request on all servers.
V$OB_SQL_AUDIT Displays the source and execution status of each SQL request on the current server.
GV$SQL_PLAN_MONITOR Displays the plan-level statistics of slow queries on all OBServer nodes. A statistics record is generated for each slow query, and the trace information of the plan is recorded.
V$SQL_PLAN_MONITOR Displays the operation-level statistics of slow queries. A statistics record is generated for each operation.
V$SQL_MONITOR_STATNAME Explains the meaning of the numbers in the OTHERSTAT_X_ID field of the GV$SQL_PLAN_MONITOR view.
GV$OB_FLT_TRACE_CONFIG Displays diagnostic information for full-featured trace.

Log-related statistics

View name Description
GV$OB_LOG_STAT Displays the status of the PALF.
V$OB_LOG_STAT Displays the status of the PALF.

Network-related statistics

View name Description
GV$OB_RPC_OUTGOING Statistics on RPCs sent on all OBServer nodes.
GV$OB_RPC_INCOMING Displays the statistics on RPC requests received on all OBServer nodes.
V$OB_RPC_OUTGOING Displays the statistics on RPC data sent by different tenants on an OBServer node for each RPC packet code.
V$OB_RPC_INCOMING Displays the statistics on RPC data received by different tenants on an OBServer node for each RPC packet code.

Database-related statistics

View name Description
GV$OB_KVCACHE Displays the KVCACHE information on each OBServer node.
GV$OB_PARAMETERS Displays the parameter information on all OBServer nodes where the tenant resides.
GV$OB_SERVER_SCHEMA_INFO Displays the schema information on all servers.
GV$OB_UNITS Displays the unit information on the OBServer node where the tenant resides. The sys tenant can view the units of all OBServer nodes in the cluster.
V$OB_KVCACHE Displays the KVCACHE information on each OBServer node.
V$OB_PARAMETERS Displays the parameter information on the current OBServer node.
V$OB_SERVER_SCHEMA_INFO Displays the schema information on all servers.
V$OB_UNITS Displays the unit information on the current OBServer node.
GV$DML_STATS Displays the DML information in the current user table.
V$DML_STATS Displays the DML information in the current user table.

Statistics on major compactions

View name Description
GV$OB_MERGE_INFO Displays statistics on major compactions completed in the OceanBase cluster.
V$OB_MERGE_INFO Displays statistics on major compactions completed in the OceanBase cluster.

Statistics on threads

View name Description
GV$OB_PX_WORKER_STAT In parallel execution, displays the execution information of each thread.
V$OB_PX_WORKER_STAT In parallel execution, displays the execution information of each thread.

Workarea-related statistics

View name Description
GV$SQL_WORKAREA Statistics of workareas of all operators for which SQL automatic memory management is responsible.
GV$SQL_WORKAREA_ACTIVE Information about the workareas of active operators.
GV$SQL_WORKAREA_HISTOGRAM Statistics of all workareas, such as the number of times that data in the range of 1 MB to 2 MB is fully processed in memory and the number of one-pass operations.
GV$OB_SQL_WORKAREA_MEMORY_INFO Queries overall statistics of SQL workareas, such as the maximum available memory, the current memory usage, and the current held memory.
V$SQL_WORKAREA Statistics of workareas of all operators for which SQL automatic memory management is responsible.
V$SQL_WORKAREA_ACTIVE Information about the workareas of active operators.
V$SQL_WORKAREA_HISTOGRAM Statistics of all workareas, such as the number of times that data in the range of 1 MB to 2 MB is fully processed in memory and the number of one-pass operations.
V$OB_SQL_WORKAREA_MEMORY_INFO Queries overall statistics of SQL workareas, including the maximum available memory, the current memory usage, and the current held memory.

Statistics on encrypted tables

View name Description
V$OB_ENCRYPTED_TABLES Displays the encryption status of tables with the encryption feature enabled.
V$ENCRYPTED_TABLESPACES Displays the encryption status of tablespaces with the encryption feature enabled.

Statistics on transactions

View name Description
GV$LATCH Displays the latch information of all OBServer nodes in the cluster.
V$LATCH Displays the latch information of all OBServer nodes in the cluster.

Views in an Oracle tenant

Dictionary view overview

Applicability

This topic applies only to OceanBase Database Enterprise Edition. OceanBase Database Community Edition provides only the MySQL mode.

Tables and views

View name Description
ALL_ALL_TABLES Displays the user's access to object and relational tables.
ALL_COL_COMMENTS Displays the comments on all columns of the views and tables that the user has access to.
ALL_TABLES Displays all tables that the user has access to.
ALL_TAB_COLS Displays all columns of the tables, views, and clusters that the user has access to.
ALL_TAB_COLUMNS Displays all columns of the tables, views, and clusters that the user has access to.
ALL_TAB_COMMENTS Displays the comments on the tables and views that the user has access to.
DBA_COL_COMMENTS Displays the comments on all columns of all views and tables in the database.
DBA_TAB_COMMENTS Displays the comments on all tables and views in the database.
USER_COL_COMMENTS Displays the comments on all columns of the views and tables that the user owns.
USER_TAB_COMMENTS Displays the comments on the tables and views that the user owns.
DBA_OB_TABLEGROUP_TABLES Displays the relationships between tables and table groups. Tables not in any table group are not displayed.
DBA_TABLES Displays all tables in the database.
DBA_ALL_TABLES Displays the object and relational tables in the database. Its columns are the same as those in ALL_ALL_TABLES.
DBA_TABLESPACES Displays all tablespaces in the database.
DBA_TAB_COLS Displays all columns of all tables, views, and clusters in the database.
DBA_TAB_COLUMNS Displays all columns of all tables, views, and clusters in the database.
USER_ALL_TABLES Displays the object and relational tables that the user has access to. The columns of this view are the same as those in ALL_ALL_TABLES, except for the OWNER column.
USER_TABLES Displays all tables that the user owns.
USER_TABLESPACES Displays the tablespaces that the user can access. The columns of this view are the same as those in DBA_TABLESPACES, except for the PLUGGED_IN column.
USER_TAB_COLS Displays all columns of the tables, views, and clusters that the user owns.
USER_TAB_COLUMNS Displays all columns of the tables, views, and clusters that the user owns.
ALL_VIEWS Displays the views that the user has access to.
DBA_VIEWS Displays all views in the database. The columns of this view are the same as those in ALL_VIEWS.
USER_VIEWS Displays the views that the user owns.
DICTIONARY Displays the descriptions of data dictionary tables and views.
DICT Displays the descriptions of data dictionary tables and views.
DBA_OB_TABLE_LOCATIONS Displays the locations of tables or partitions, including system tables, user tables, index tables, etc.

Outline

View name Description
DBA_OB_OUTLINES Displays the outline information of execution plans for the current tenant.
DBA_OB_CONCURRENT_LIMIT_SQL Displays the outline-related information of concurrency limit rules for the current tenant.
DBA_OB_OUTLINE_CONCURRENT_HISTORY Displays the history information of execution plans and concurrency limit rules outlines for the current tenant.

SPM

View name Description
DBA_SQL_PLAN_BASELINES Displays the plan baselines of SQL statements in SPM.
DBA_SQL_MANAGEMENT_CONFIG Displays the configuration parameters in SPM.

Database information

View name Description
DBA_CONTEXT Displays all context namespaces in the database.
DBA_OB_DATABASES Displays metadata about tenant databases.
DBA_OB_MAJOR_COMPACTION Displays global information about major compactions in the tenant.
DBA_OB_ZONE_MAJOR_COMPACTION Displays information about major compactions in each zone of the tenant.
ALL_OBJECTS Displays all database objects that the user can access.
DBA_OBJECTS Displays all database objects in the database.
USER_OBJECTS Displays all database objects owned by the user.
ALL_DEPENDENCIES Displays the dependencies among all objects in the database.
DBA_DEPENDENCIES Displays all dependencies among objects in the database.
USER_DEPENDENCIES Displays the dependencies among objects in the user's schema.
DBA_OB_FREEZE_INFO Displays version information generated by major compactions (major_freeze).

Functions and procedures

View name Description
ALL_ARGUMENTS Displays the parameters of the functions and procedures that the current user can access.
ALL_PROCEDURES Displays all the functions and procedures that the current user can access, along with their attributes.
ALL_SOURCE Displays the text sources of stored objects that the current user can access.
DBA_ARGUMENTS Displays the parameters of the functions and procedures available in the database. The columns are the same as those in the ALL_ARGUMENTS view.
DBA_PROCEDURES Displays all the functions and procedures available in the database, along with their attributes. The columns are the same as those in the ALL_PROCEDURES view.
DBA_SOURCE Displays the text sources of all stored objects in the database. The columns are the same as those in the ALL_SOURCE view.
USER_ARGUMENTS Displays the parameters of the functions and procedures owned by the current user. The columns are the same as those in the ALL_ARGUMENTS view, excluding the OWNER column.
USER_PROCEDURES Displays all the functions and procedures owned by the current user, along with their attributes. The columns are the same as those in the ALL_PROCEDURES view, excluding the OWNER column.
USER_SOURCE Displays the text sources of the stored objects owned by the current user. The columns are the same as those in the ALL_SOURCE view, excluding the OWNER column.
DBA_JOBS Displays a summary of the tasks that have been committed.
USER_JOBS Displays a summary of the tasks that have been committed.
DBA_JOBS_RUNNING Displays the running tasks.

Backup and restore-related

View name Description
DBA_OB_BACKUP_JOBS Displays the backup jobs of the current tenant.
DBA_OB_BACKUP_JOB_HISTORY Displays the history records of the backup jobs of the current tenant.
DBA_OB_BACKUP_TASKS Displays the backup tasks of the current tenant.
DBA_OB_BACKUP_TASK_HISTORY Displays the history records of the backup tasks of the current tenant.
DBA_OB_BACKUP_SET_FILES Displays the status of backup sets and files.
DBA_OB_RESTORE_PROGRESS Displays the ongoing restore tasks.
DBA_OB_RESTORE_HISTORY Displays the completed restore tasks.
DBA_OB_ARCHIVE_DEST Displays the configurations of archive paths.
DBA_OB_BACKUP_STORAGE_INFO Displays the information about backup destinations used for backup and restore within the tenant.
DBA_OB_BACKUP_STORAGE_INFO_HISTORY Displays the historical information about backup destinations used for backup and restore within the tenant.
DBA_OB_BACKUP_DELETE_POLICY Displays the cleanup policies set for automatic or periodic cleanup of expired data within the tenant.
DBA_OB_BACKUP_DELETE_JOBS Displays the execution progress of the backup deletion jobs at the tenant level.
DBA_OB_BACKUP_DELETE_JOB_HISTORY Displays the history information of the backup deletion jobs executed within the tenant.
DBA_OB_BACKUP_DELETE_TASKS Displays the information about backup_set or backup_piece deletion tasks being executed within the tenant.
DBA_OB_BACKUP_DELETE_TASK_HISTORY Displays the historical information of backup_set or backup_piece deletion tasks completed within the tenant.
DBA_OB_ARCHIVELOG Displays the backup status of logs on each path.
DBA_OB_ARCHIVELOG_SUMMARY Displays the backup status of all logs, both historical and current.
DBA_OB_ARCHIVELOG_PIECE_FILES Displays the status of pieces in backup sets.
DBA_OB_BACKUP_PARAMETER Displays the backup parameters.
DBA_OB_RECOVER_TABLE_JOBS Displays information about table-level restore jobs.
DBA_OB_IMPORT_TABLE_JOBS Displays information about import jobs.
DBA_OB_IMPORT_TABLE_TASKS Displays records of table-level import tasks.
DBA_OB_RECOVER_TABLE_JOB_HISTORY Displays the results of table-level restore jobs.
DBA_OB_IMPORT_TABLE_JOB_HISTORY Displays the results of import jobs.
DBA_OB_IMPORT_TABLE_TASK_HISTORY Displays the history records of cross-tenant table-level import tasks.

Statistics and histograms

View name Description
ALL_PART_COL_STATISTICS Displays the column statistics and histograms of the partitions of tables that the current user has access to.
ALL_PART_HISTOGRAMS Displays the histograms of all partitions.
ALL_SUBPART_COL_STATISTICS Displays the column statistics and histograms of the subpartitions of tables that the current user has access to.
ALL_SUBPART_HISTOGRAMS Displays the histograms of all subpartitions.
ALL_TAB_COL_STATISTICS Displays the column statistics and histograms of the tables that the current user has access to.
ALL_TAB_HISTOGRAMS Displays the histograms of all tables.
ALL_TAB_STATISTICS Displays the optimizer statistics of the tables that the current user has access to.
DBA_PART_COL_STATISTICS Displays the column statistics and histograms of the partitions of tables in the database.
DBA_PART_HISTOGRAMS Displays the histograms of the partitions of tables in the current database.
DBA_SUBPART_COL_STATISTICS Displays the column statistics and histograms of the subpartitions of tables in the database.
DBA_SUBPART_HISTOGRAMS Displays the histograms of the subpartitions of tables in the current database.
DBA_TAB_COL_STATISTICS Displays the column statistics and histograms of all tables in the database.
DBA_TAB_HISTOGRAMS Displays the histograms of tables at the database level.
DBA_TAB_STATISTICS Displays the optimizer statistics of all tables in the database.
USER_PART_COL_STATISTICS Displays the column statistics and histograms of the partitions of tables that the current user has access to.
USER_PART_HISTOGRAMS Displays the histograms of the partitions of tables that the current user has access to.
USER_SUBPART_COL_STATISTICS Displays the column statistics and histograms of the subpartitions of tables that the current user has access to.
USER_SUBPART_HISTOGRAMS Displays the histograms of the subpartitions of tables that the current user has access to.
USER_TAB_COL_STATISTICS Displays the column statistics and histograms of the tables that the current user has access to.
USER_TAB_HISTOGRAMS Displays the histograms of tables at the user level.
USER_TAB_STATISTICS Displays the optimizer statistics of all tables that the current user has access to.
ALL_TAB_STATS_HISTORY Displays the modification history of table statistics of tables that the current user has access to.
DBA_TAB_STATS_HISTORY Displays the modification history of table statistics of all tables in the database.
USER_TAB_STATS_HISTORY Displays the modification history of table statistics of all tables that the current user owns.
ALL_IND_STATISTICS Displays the optimizer statistics of the indexes on tables that the current user has access to.
DBA_IND_STATISTICS Displays the optimizer statistics of all indexes in the database.
USER_IND_STATISTICS Displays the optimizer statistics of the indexes on tables that the current user owns.
ALL_TAB_MODIFICATIONS Displays the modification information of tables that the current user has access to since the last time statistics were collected on those tables.
DBA_TAB_MODIFICATIONS Displays the modification information of all tables in the database since the last time statistics were collected on those tables.
USER_TAB_MODIFICATIONS Displays the modification information of tables that the current user owns since the last time statistics were collected on those tables.

Users and privileges

View name Description
ALL_USERS Displays all database users visible to the current user.
DBA_USERS Displays all users of the database.
USER_USERS Displays information about the current user.
ALL_COL_PRIVS Displays the column object privileges that the current user holds as the owner, grantor, or grantee of the objects. Additionally, it displays the column object privileges that are granted to PUBLIC or to the active roles of the current user.
ALL_TAB_PRIVS *Displays the table object privileges that the current user holds as the owner, grantor, or grantee of the objects. * The table object privileges are those granted to the current user as the grantee or to the active roles of the current user.
DBA_COL_PRIVS Displays all column privileges granted in the database.
DBA_SYS_PRIVS Displays the system privileges granted to users and roles.
DBA_TAB_PRIVS Displays all object privileges granted in the database.
USER_TAB_PRIVS Displays the object privileges held by the current user.
USER_COL_PRIVS Displays the column privileges that the current user holds as the owner, grantor, or grantee of the objects.
USER_ROLE_PRIVS Displays the roles granted to the current user.
USER_SYS_PRIVS Displays the system privileges granted to the current user.
ROLE_TAB_PRIVS Displays the table privileges granted to roles. It provides information only about roles accessible to the user.
ROLE_SYS_PRIVS Displays the system privileges granted to roles.
ROLE_ROLE_PRIVS Displays the roles that grant privileges to other roles. It provides information only about roles accessible to the user.
DBA_ROLE_PRIVS Displays the roles granted to all users and the roles in the database.
DBA_ROLES Displays all roles in the database.
ALL_DIRECTORIES Displays all directories accessible to the current user.
DBA_DIRECTORIES Displays all directories accessible to the current user.

Views

View name Description
ALL_CONSTRAINTS Displays the constraints of all tables accessible to the user.
ALL_CONS_COLUMNS Displays the columns of all constraints of all tables accessible to the user.
DBA_CONSTRAINTS Displays the constraints of all tables in the database.
DBA_CONS_COLUMNS Displays the columns of all constraints of all tables in the database.
USER_CONSTRAINTS Displays the constraints of all tables owned by the user.
USER_CONS_COLUMNS Displays the columns of all constraints of all tables owned by the user.

Auditing

View name Description
ALL_DEF_AUDIT_OPTS Displays the default audit conditions for any object.
AUDIT_ACTIONS Displays the action IDs and their names in audit records.
DBA_AUDIT_EXISTS Displays the audit trail entries generated by the AUDIT EXISTS and AUDIT NOT EXISTS statements.
DBA_AUDIT_OBJECT Displays the audit trail records of all objects in the database.
DBA_AUDIT_SESSION Displays the audit trail records of all CONNECT and DISCONNECT statements.
DBA_AUDIT_STATEMENT Displays the audit trail records of GRANT, REVOKE, AUDIT, NOAUDIT, and ALTER SYSTEM statements in the database.
DBA_AUDIT_TRAIL Displays all audit trail entries.
DBA_OBJ_AUDIT_OPTS Displays the details of object-level audit configurations.
DBA_STMT_AUDIT_OPTS Displays the details of statement-level audit configurations.
STMT_AUDIT_OPTION_MAP Displays the types, names, and priorities of statement-level audit options.
USER_AUDIT_OBJECT Displays the audit trail records of objects that the current user can access.
USER_AUDIT_SESSION Displays the audit trail records of all connections and disconnections of the current user.
USER_AUDIT_STATEMENT Displays the audit trail records of GRANT, REVOKE, AUDIT, NOAUDIT, and ALTER SYSTEM statements issued by the current user.
USER_AUDIT_TRAIL Displays the standard audit trail entries related to the current user.

Indexes

View Description
ALL_INDEXES Displays the index columns of all tables accessible to the user.
ALL_IND_COLUMNS Displays the index columns of all tables accessible to the user.
ALL_IND_EXPRESSIONS Displays the information about function-based indexes accessible to the user in the database.
ALL_IND_PARTITIONS Displays the partitions of indexes accessible to the user in the database.
ALL_IND_SUBPARTITIONS Displays the subpartitions of indexes accessible to the user in the database.
ALL_PART_INDEXES Displays the partitions of partitioned indexes accessible to the user.
DBA_INDEXES Displays the indexes of all tables in the database.
DBA_IND_COLUMNS Displays the index columns of all tables in the database.
DBA_IND_EXPRESSIONS Displays the information about all function-based indexes in the database.
DBA_IND_PARTITIONS Displays the partitions of all indexes in the database.
DBA_IND_SUBPARTITIONS Displays the subpartitions of all indexes in the database.
USER_INDEXES Displays the indexes of all tables owned by the user.
USER_IND_COLUMNS Displays the index columns of all tables owned by the user.
USER_IND_EXPRESSIONS Displays the information about the function-based indexes owned by the user in the database.
USER_IND_PARTITIONS Displays the partitions of indexes owned by the user in the database. The INDEX_OWNER column is not included in this view compared with the ALL_IND_PARTITIONS and DBA_IND_PARTITIONS views.
USER_IND_SUBPARTITIONS Displays the subpartitions of indexes owned by the user in the database. The INDEX_OWNER column is not included in this view compared with the DBA_IND_SUBPARTITIONS and ALL_IND_SUBPARTITIONS views.
USER_PART_INDEXES Displays the partitions of partitioned indexes owned by the user.

Partitioning

View name Description
ALL_PART_KEY_COLUMNS Displays the columns that are part of the partitioning key of all partitioned objects that the user has access to.
ALL_PART_TABLES Displays the partition information of partitioned tables that the user has access to.
ALL_SUBPART_TEMPLATES Displays descriptions of all subpartition templates.
ALL_SUBPART_KEY_COLUMNS Displays the columns that are part of the subpartitioning key of all partitioned objects that the user has access to.
ALL_TAB_PARTITIONS Displays the multilevel partitioning information, storage parameters, and statistics of all partitioned tables.
ALL_TAB_SUBPARTITIONS Displays the partition-level storage parameters and statistics that are generated by the DBMS_STATS package for each subpartition of the tables that the user has access to.
DBA_PART_INDEXES Displays the partition information of all partitioned indexes in the database.
DBA_PART_KEY_COLUMNS Displays the columns that are part of the partitioning key of all partitioned objects in the database.
DBA_PART_TABLES Displays the partition information of partitioned tables that the user has access to.
DBA_SUBPART_TEMPLATES Displays descriptions of all subpartition templates.
DBA_SUBPART_KEY_COLUMNS Displays the columns that are part of the subpartitioning key of all partitioned objects in the database.
DBA_TAB_PARTITIONS Displays the multilevel partitioning information, storage parameters, and statistics of partitioned tables that the user has access to.
DBA_TAB_SUBPARTITIONS Displays the name of each subpartition, the name of the table to which the subpartition belongs, the name of the partition to which the table belongs, its storage attributes, and the statistics generated by the DBMS_STATS package.
USER_PART_KEY_COLUMNS Displays the columns that are part of the partitioning key of all partitioned objects that the user owns.
USER_PART_TABLES Displays the partition information of partitioned tables that the user has access to.
USER_SUBPART_TEMPLATES Displays descriptions of all subpartition templates.
USER_SUBPART_KEY_COLUMNS Displays the columns that are part of the subpartitioning key of all partitioned objects that the user has access to.
USER_TAB_SUBPARTITIONS Displays the subpartition name, the name of the table to which the subpartition belongs, the name of the partition to which the table belongs, its storage attributes.
USER_TAB_PARTITIONS Displays the multilevel partitioning information, storage parameters, and statistics of partitioned tables that the user has access to.

Session-related views

View name Description
DBA_OB_DEADLOCK_EVENT_HISTORY Displays the history of deadlocks. This view displays the deadlocks that occurred in the current tenant in a non-root tenant.

Sequence views

View name Description
ALL_SEQUENCES Displays all sequences that the user has access to.
DBA_SEQUENCES Displays all sequences in the database.
USER_SEQUENCES Displays all sequences owned by the current user.
TENANT_VIRTUAL_GLOBAL_VARIABLE Displays global variables.
TENANT_VIRTUAL_SESSION_VARIABLE Displays session variables.

Synonym views

View name Description
ALL_SYNONYMS Displays all synonyms that the user has access to.
DBA_SYNONYMS Displays all synonyms in the database.
USER_SYNONYMS Displays all synonyms owned by the current user.

Triggers

View name Description
ALL_TRIGGERS Displays the triggers and descriptions of the tables on which the current user has privileges. If the current user has the CREATE ANY TRIGGER privilege, this view displays the descriptions of all triggers in the database.
DBA_TRIGGERS Displays all triggers in the database.
USER_TRIGGERS Displays the triggers of the current user.

Recycle bin

View name Description
DBA_RECYCLEBIN Displays information about the recycle bins in the database.
USER_RECYCLEBIN Displays information about the recycle bin of the current user. Its columns are the same as those of DBA_RECYCLEBIN, except for the OWNER column.

Resource groups

View name Description
DBA_RSRC_GROUP_MAPPINGS Displays the mappings between users and resource groups.
DBA_RSRC_CONSUMER_GROUPS Displays information about all resource groups in the database.
DBA_RSRC_PLANS Displays all system-defined resource management plans.
DBA_RSRC_PLAN_DIRECTIVES Displays the details of all resource plan directives in the database.

NLS

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

User-defined types

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

Object

View name Description
ALL_ERRORS Displays errors for current storage objects that the user can access.
DBA_ERRORS Displays errors for current storage objects in the database.
USER_ERRORS Displays errors for current storage objects that the user can access.
DBA_SEGMENTS Displays storage information about all segments in the database.
USER_SEGMENTS Displays storage information about segments of objects under the user's account.

PROFILE

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

Views related to replicas and logs

View name Description
DBA_OB_LS_LOCATIONS Displays the distribution of log stream (LS) replicas in the current tenant.
DBA_OB_TABLEGROUPS Displays the metadata of table groups, including the partition information of table groups.
DBA_OB_TABLEGROUP_PARTITIONS Displays the partition information of partitions in a table group.
DBA_OB_TABLEGROUP_SUBPARTITIONS Displays the subpartition information of partitions in a table group.
DBA_OB_TABLET_REPLICAS Displays 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>.
DBA_OB_TABLET_TO_LS Displays the distribution of all tablets in the current tenant and the log stream to which each tablet belongs.
DBA_OB_LS Displays the status and recovery progress of log streams.

WR-related views

View name Description
DBA_WR_SNAPSHOT Displays the SNAPSHOT information of the current tenant.
DBA_WR_ACTIVE_SESSION_HISTORY Displays the ASH data of the current tenant after it is persisted.
DBA_WR_STATNAME Displays the names of the system statistics of the current tenant.
DBA_WR_SYSSTAT Displays the details of the system statistics of the current tenant.
DBA_WR_CONTROL Displays the configuration information related to WR.

Load balancing views

View name Description
DBA_OB_TRANSFER_PARTITION_TASKS Displays the transfer partition tasks being processed in the current tenant.
DBA_OB_TRANSFER_PARTITION_TASK_HISTORY Displays the transfer partition task history of the current tenant.

Scheduler views

View name Description
DBA_SCHEDULER_JOBS Displays the information of scheduled jobs accessible to the current user.
DBA_SCHEDULER_PROGRAM Displays all scheduled programs in the database.
DBA_SCHEDULER_JOB_RUN_DETAILS Displays the information of all scheduled jobs in the current tenant.

DBLINK-related views

View name Description
ALL_DB_LINKS Displays all DBLINKS that the current user has access to.
DBA_DB_LINKS Displays all DBLINKS that have been created in the current tenant.
USER_DB_LINKS Displays all DBLINKS that have been created by the current user.

Not supported views

View name Description
ALL_METHOD_PARAMS Displays the method parameters of objects that a user has access to.
ALL_SCHEDULER_JOB_ARGS Displays the parameters of scheduled jobs that a user has query access to.
ALL_SCHEDULER_PROGRAM_ARGS Displays the parameters of.schedulers that a user has query access to.
ALL_TYPE_METHODS Displays the methods of objects that a user has access to.
DBA_METHOD_PARAMS Displays the method parameters of objects in the database.
DBA_SCHEDULER_JOB_ARGS Displays the parameters of scheduled jobs in the database.
USER_SCHEDULER_JOB_ARGS Displays the parameters of scheduled jobs owned by the user.
DBA_SCHEDULER_PROGRAM_ARGS Displays the parameters of.schedulers in the database.
USER_SCHEDULER_PROGRAM_ARGS Displays the parameters of.schedulers owned by the user.
DBA_TYPE_METHODS Displays the methods of objects in the database.
USER_TYPE_METHODS Displays the methods of objects that a user has access to, excluding the OWNER column. The fields are the same as those in the ALL_TYPE_METHODS view.

Overview of the performance view

Statistics

View name Description
GV$OB_KVCACHE Displays the KVCACHE information of each OBServer node.
GV$OB_PARAMETERS Displays the parameter information of all OBServer nodes where the tenant resides.
GV$OB_SERVER_SCHEMA_INFO Displays the schema information of all servers.
V$OB_SERVER_SCHEMA_INFO Displays the schema information of all servers.
GV$OB_UNITS Displays the unit information of the OBServer node where the tenant resides. The sys tenant can view the units of all OBServer nodes in the cluster.
GV$SYSSTAT Displays the system-level statistical events on all servers.
GV$DML_STATS Displays the DML information in the current user table.
V$DML_STATS Displays the DML information in the current user table.
V$GLOBALCONTEXT Displays the CLIENT_IDENTIFIER values of global context attributes accessible to the current session.
V$OB_KVCACHE Displays the KVCACHE information of each OBServer node.
V$OB_PARAMETERS Displays the parameters of the current OBServer node.
V$SYSSTAT Displays the system-level statistical events on the current server.
V$OB_UNITS Displays the units of the current OBServer node.
V$VERSION View the names and versions of all components of the database product.

Instance-related

View name Description
GV$INSTANCE Displays the status of the current database instance.
V$INSTANCE Displays the status of the current database instance.

Memory-related views

View name Description
GV$OB_MEMORY Displays the memory usage of each tenant on all servers.
GV$OB_MEMSTORE Displays the memory usage of MemTables of all tenants on all servers.
GV$OB_SQL_WORKAREA_MEMORY_INFO Provides information about the SQL workarea, including the maximum available memory, the current memory usage, and the memory occupied by held data.
GV$OB_SSTABLES Displays the SSTable information of tenants.
GV$OB_MEMSTORE_INFO Displays the details of MemTables of all partitions of all tenants on all servers.
V$OB_MEMSTORE_INFO Displays the details of MemTables of all partitions of all tenants on all servers.
V$OB_MEMORY Displays the memory statistics of tenants.
V$OB_MEMSTORE Displays the memory usage of MemTables of all tenants on the current server.
V$OB_SSTABLES Displays the SSTable information of tenants.
GV$OB_TENANT_MEMORY Displays the memory usage of each tenant in the cluster.
V$OB_TENANT_MEMORY Displays the memory usage of each tenant in the current observer process.

Cache-related

View name Description
GV$OB_PLAN_CACHE_PLAN_EXPLAIN Displays the physical execution plans cached in the plan cache of all servers.
GV$OB_PLAN_CACHE_PLAN_STAT Records the status of each cached object in the plan caches of all servers in the current tenant.
GV$OB_PLAN_CACHE_STAT Records the overall status of each plan cache on all servers in the current tenant.
V$OB_PLAN_CACHE_PLAN_EXPLAIN Displays the physical execution plans cached in the plan cache of the current server.
V$OB_PLAN_CACHE_PLAN_STAT Records the status of each cached object in the plan cache on the current server in the current tenant.
V$OB_PLAN_CACHE_STAT Records the overall status of each plan cache on all servers in the current tenant.
V$RSRC_PLAN Displays the resource management plans of the current active tenant.

Log-related

View name Description
GV$OB_LOG_STAT Displays the status of the PALF.
V$OB_LOG_STAT Displays the status of the PALF.

Monitoring views

View name Description
GV$OB_PX_TARGET_MONITOR Displays the usage of PX threads on all OBServer nodes.
GV$OB_PS_ITEM_INFO Provides monitoring functionality for Prepared Statements and displays basic information about all prepared statements in the PS cache.
GV$OB_PS_STAT Monitors the overall status of the PS cache, including the hit rate, memory usage, and number of cached items.
GV$OB_DTL_INTERM_RESULT_MONITOR Displays the monitoring information of the DTL intermediate result manager.
V$OB_DTL_INTERM_RESULT_MONITOR Displays the monitoring information of the DTL intermediate result manager.
V$OB_PX_TARGET_MONITOR Displays the usage of PX threads on OBServer nodes.
V$OB_PS_ITEM_INFO Provides monitoring functionality for Prepared Statements and displays basic information about all prepared statements in the PS cache.
V$OB_PS_STAT Monitors the overall status of the PS cache, including the hit rate, memory usage, and number of cached items.
V$SQL_MONITOR_STATNAME Displays the meanings of the numbers in the OTHERSTAT_X_ID column of the GV$SQL_PLAN_MONITOR view.

Session-related views

View name Description
GV$OB_PROCESSLIST Displays the session information of all OBServer nodes to which the tenant belongs.
GV$SESSION_WAIT Displays information about the current or last wait event of all sessions on all servers, including the wait event name and duration.
GV$SESSION_WAIT_HISTORY Displays information about the last 10 wait events of all sessions on all servers.
GV$SESSTAT Displays some statistics at the session level on all servers.
GV$ACTIVE_SESSION_HISTORY Displays the ASH data of active sessions.
V$ACTIVE_SESSION_HISTORY Displays the ASH data of active sessions.
V$NLS_PARAMETERS Displays the NLS parameters at the session level.
V$OB_PROCESSLIST Displays the session information of the current OBServer node.
V$SESSION_WAIT Displays information about the current or last wait event of all sessions on the current server, including the wait event name and duration.
V$SESSION_WAIT_HISTORY Displays information about the last 10 wait events of all sessions on the current server.
V$SESSTAT Displays some statistics at the session level.
V$EVENT_NAME Displays the definitions of various events in the tenant.

SQL-related statistics

View name Description
GV$OB_SQL_AUDIT Displays the source and execution status of each SQL request on all servers.
V$OB_SQL_AUDIT Displays the source and execution status of each SQL request on the current server.
GV$SQL_PLAN_MONITOR Displays the plan-level statistics of slow queries on all OBServer nodes. A statistics entry is generated for each slow query, and the trace information of the plan is recorded.
V$SQL_PLAN_MONITOR Displays the plan-level statistics of slow queries on all OBServer nodes. A statistics entry is generated for each slow query, and the trace information of the plan is recorded.
GV$OB_FLT_TRACE_CONFIG Displays diagnostic information of full-featured tracing across the entire service chain.

Threads

View name Description
GV$OB_PX_WORKER_STAT In parallel execution scenarios, displays the execution information of each thread.
V$OB_PX_WORKER_STAT In parallel execution scenarios, displays the execution information of each thread.

Workarea

View name Description
GV$SQL_WORKAREA Statistics of all operators whose memory is managed by SQL automatic memory management.
GV$SQL_WORKAREA_ACTIVE Information about the workareas of active operators.
GV$SQL_WORKAREA_HISTOGRAM Statistics of all workareas.
V$OB_SQL_WORKAREA_MEMORY_INFO Provides some information about SQL workareas, including the maximum available memory, the current memory usage, and the current held memory.
V$SQL_WORKAREA Statistics of all operators whose memory is managed by SQL automatic memory management.
V$SQL_WORKAREA_ACTIVE Information about the workareas of active operators.
V$SQL_WORKAREA_HISTOGRAM Statistics of all workareas.

Transaction-related

View name Description
GV$OB_COMPACTION_PROGRESS Displays the major compaction progress information of the tenant on OBServer nodes.
GV$OB_COMPACTION_SUGGESTIONS Displays suggestions for major compactions.
GV$OB_COMPACTION_DIAGNOSE_INFO Displays the diagnostic information of major compactions.
GV$OB_TABLET_COMPACTION_HISTORY Displays the history information of tablet-level major compactions.
GV$OB_TABLET_COMPACTION_PROGRESS Displays the progress information of tablet-level major compactions.
GV$OB_TRANSACTION_PARTICIPANTS Displays the transaction participants on all OBServer nodes.
GV$SYSTEM_EVENT Displays the wait events at the system level for the tenant on all servers, and statistics on the number of occurrences, the total wait time, and the number of timeouts for each wait event.
GV$GLOBAL_TRANSACTION Displays information about the active global transactions.
V$OB_COMPACTION_PROGRESS Displays the major compaction progress information of the tenant on OBServer nodes.
V$OB_COMPACTION_SUGGESTIONS Displays suggestions for major compactions.
V$OB_COMPACTION_DIAGNOSE_INFO Displays the diagnostic information of major compactions.
V$OB_TABLET_COMPACTION_HISTORY Displays the history information of tablet-level major compactions.
V$OB_TABLET_COMPACTION_PROGRESS Displays the progress information of tablet-level major compactions.
V$OB_TRANSACTION_PARTICIPANTS Displays the transaction participants on all OBServer nodes.
V$SYSTEM_EVENT Displays the wait events at the system level for the tenant on the current server, and statistics on the number of occurrences, the total wait time, and the number of timeouts for each wait event.
V$GLOBAL_TRANSACTION Displays information about the active global transactions.
GV$OB_GLOBAL_TRANSACTION Displays information about all XA transactions in the cluster.
V$OB_GLOBAL_TRANSACTION Displays information about all XA transactions that are initiated by the current node as the original scheduler.

Time zones

View name Description
V$TIMEZONE_NAMES Displays the names of effective time zones.

Encrypted tables

View name Description
V$OB_ENCRYPTED_TABLES Displays the encryption status of tables with the encryption feature enabled.
V$ENCRYPTED_TABLESPACES Displays the encryption status of tablespaces with the encryption feature enabled.

DBLINK

View name Description
GV$DBLINK Displays all database links (IN_TRANSACTION=YES) opened after the query session on this view is started. These database links must be committed or rolled back before they are closed.
V$DBLINK Displays all database links (IN_TRANSACTION=YES) opened after the query session on this view is started. These database links must be committed or rolled back before they are closed.

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Views in a MySQL tenant
Overview of dictionary views
Overview of the performance view
Views in an Oracle tenant
Dictionary view overview
Overview of the performance view