OceanBase logo

OceanBase

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

Product Overview
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

Resources

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
PRODUCTS

OceanBase Cloud

OceanBase Database

Tools

Connectors and Middleware

QUICK START

OceanBase Cloud

OceanBase Database

BEST PRACTICES

Practical guides for utilizing OceanBase more effectively and conveniently

Company

Learn more about OceanBase – our company, partnerships, and trust and security initiatives.

About OceanBase

Partner

Trust Center

Contact Us

International - English
中国站 - 简体中文
日本 - 日本語
Sign In
Start on Cloud

OceanBase

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

Product Overview
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
PRODUCTS
OceanBase CloudOceanBase Database
ToolsConnectors and Middleware
QUICK START
OceanBase CloudOceanBase Database
BEST PRACTICES

Practical guides for utilizing OceanBase more effectively and conveniently

Learn more about OceanBase – our company, partnerships, and trust and security initiatives.

About OceanBase

Partner

Trust Center

Contact Us

Start on Cloud
编组
All Products
    • Databases
    • iconOceanBase Database
    • iconOceanBase Cloud
    • iconOceanBase Tugraph
    • iconInteractive Tutorials
    • iconOceanBase Best Practices
    • Tools
    • iconOceanBase Cloud Platform
    • iconOceanBase Migration Service
    • iconOceanBase Developer Center
    • iconOceanBase Migration Assessment
    • iconOceanBase Admin Tool
    • iconOceanBase Loader and Dumper
    • iconOceanBase Deployer
    • iconKubernetes operator for OceanBase
    • iconOceanBase Diagnostic Tool
    • iconOceanBase Binlog Service
    • Connectors and Middleware
    • iconOceanBase Database Proxy
    • iconEmbedded SQL in C for OceanBase
    • iconOceanBase Call Interface
    • iconOceanBase Connector/C
    • iconOceanBase Connector/J
    • iconOceanBase Connector/ODBC
    • iconOceanBase Connector/NET
icon

OceanBase Database

SQL - V4.3.0

  • 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
    • Video tutorials
    • Try out OceanBase Database Community Edition
    • Try out advanced features of OceanBase Database
      • Scalable OLTP
        • Try out the hot row update capability of OceanBase Database
        • Run the TPC-C benchmark in OceanBase Database
      • Try out operational OLAP
      • Try out parallel import and data compression
      • Try out the multi-tenant feature
    • Build a sample application (Oracle mode)
      • Build a Java application
      • Build a C application
    • Learn OceanBase SQL
      • Basic SQL operations (Oracle mode)
      • Basic SQL operations (MySQL mode)
      • Before you begin
    • Build a sample application (MySQL mode)
      • Build a Python application
      • Build a Java application
      • Build a C application
      • Build a Go application
  • Develop
    • Develop applications (MySQL mode)
      • Sample applications
        • Java
          • Spring Data JDBC
          • Spring Boot
          • Spring Data JPA
          • MyBatis
          • Spring Batch
          • Hibernate
          • Connector/J
          • TestContainers
        • Python
          • mysqlclient
          • PyMySQL
          • MySQL-connector-python
        • C
          • MySQL Connector/C
        • Go
          • GORM
          • Go-SQL-Driver/MySQL
        • PHP
          • EXT
          • MySQLi
          • PDO
      • Write data
        • Delete data
        • Generate test data in batches
        • Update data
        • Insert data
        • Replace data
      • Application errors
        • Common errors and troubleshooting practices
          • Table does not exist, with ERROR 1146 reported
          • Data truncated while being inserted, with ERROR 1265 reported
          • Incorrect user password, with ERROR 1045 reported
          • Transaction timed out, with ERROR 4012 reported
          • User locked, with ERROR 3118 reported
          • Idle transaction timed out, with ERROR 6002 reported
          • Table already exists, with ERROR 1050 reported
          • Duplicate data inserted, with ERROR 1062 reported
          • Disconnected from the server, with ERROR 2013 reported
          • ERROR 1215 reported in foreign key addition
        • Troubleshooting guidelines
          • About error codes
          • Error handling specifications for MySQL-compatible applications
      • Connect to OceanBase Database
        • Connect to an OceanBase tenant by using OBClient
        • Connect to an OceanBase tenant by using the mysql client
        • Connect to OceanBase Database by using ODC
        • Overview
        • Connect to OceanBase Database by using DBeaver
        • Connect to OceanBase Database by using Navicat
        • Use database connection pool
          • HikariCP
          • Proxool
          • DBCP
          • Commons Pool
          • Druid
          • Database connection pool configuration
          • Connect to OceanBase Database by using a Tomcat connection pool
          • c3p0
      • Read data
        • Use a DBLink in queries
        • Single-table queries
        • Set operations
        • Use operators and functions in queries
          • Use aggregate functions in queries
          • Use numerical functions in queries
          • Use the SELECT ... LOCK IN SHARE MODE statement to lock query results
          • Use the CASE conditional operator in queries
          • Use type conversion functions in queries
          • Use datetime functions in queries
          • Use arithmetic operators in queries
          • Use string functions in queries
          • Use string concatenation operators in queries
          • Use NULL-related functions in queries
          • Use the SELECT ... FOR UPDATE statement to lock query results
        • Join tables
          • RIGHT JOIN queries
          • Lateral derived table
          • Subqueries
          • LEFT JOIN queries
          • INNER JOIN queries
          • FULL JOIN queries
      • Plan database objects
        • Create an external table
        • Create an index
        • Create a table group
        • Create a database
        • Create a table
      • Transactions
        • Roll back a transaction
        • Commit a transaction
        • Overview
        • Start a transaction
        • Savepoints
          • Mark a savepoint
          • Release a savepoint
          • Roll back a transaction to a savepoint
    • Develop applications (Oracle mode)
      • Sample applications
        • Java
          • Spring Boot
          • MyBatis
          • JFinal
          • OceanBase Connector/J
          • Spring Data JPA
          • Spring Data JDBC
          • Hibernate
          • Spring Batch
        • C/C++
          • OceanBase Connector/C
          • OceanBase Connector/ODBC
          • SqlSugar
      • Read data
        • Set operations
        • Single-table queries
        • Use a DBLink in queries
        • Join tables
          • INNER JOIN queries
          • RIGHT JOIN queries
          • LEFT JOIN queries
          • Subqueries
          • FULL JOIN queries
        • Use operators and functions in queries
          • Use arithmetic operators in queries
          • Use type conversion functions in queries
          • Use aggregate functions in queries
          • Use numerical functions in queries
          • Use string concatenation operators in queries
          • Use CASE functions in queries
          • Use the SELECT...FOR UPDATE statement to lock query results
          • Use string functions in queries
          • Use NULL-related functions in queries
          • Use datetime functions in queries
      • Connect to OceanBase Database
        • Overview
        • Connect to OceanBase Database by using ODC
        • Connect to an OceanBase tenant by using OBClient
        • Use database connection pool
          • c3p0
          • Database connection pool configuration
          • DBCP
          • HikariCP
          • Druid
          • Proxool
          • Tomcat
          • Commons Pool
      • Application errors
        • Common errors and troubleshooting practices
          • Transaction timed out, with Error ORA-00600 reported
          • Idle transaction timed out, with Error ORA-24761 reported
          • Duplicate data inserted, with Error ORA-00001 reported
          • Table does not exist, with Error ORA-04043 reported
          • Inconsistent data types, with Error ORA-00932 reported
          • User locked, with ERROR 3118 reported
          • Table already exists, with Error ORA-00955 reported
          • Error ORA-00600 reported in foreign key addition
          • Incorrect user password, with ERROR 1045 reported
        • Troubleshooting guidelines
          • Error handling specifications for Oracle-compatible applications
          • About error codes
      • Write data
        • Insert data
        • Update data
        • Delete data
        • Replace data
        • Generate test data in batches
      • Transactions
        • Overview
        • Start a transaction
        • Savepoints
          • Roll back a transaction to a savepoint
          • Mark a savepoint
        • Commit a transaction
        • Roll back a transaction
      • Plan database objects
        • Create a table group
        • Create a table
        • Create an index
        • Create an external table
  • Deploy
    • Delete old clusters
    • Overview
    • High availability deployment solutions for OceanBase clusters
    • Deploy OceanBase Database Community Edition
      • Overview
      • Deploy locally
        • Deploy OceanBase Database in a production environment by using the command line
        • Software and hardware requirements
        • Deploy OceanBase Database by using systemd
        • 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 OCP
          • Deploy an OceanBase cluster through the GUI of OBD
      • Deploy OceanBase Database in a Kubernetes cluster
    • Deploy OceanBase Database Enterprise Edition
      • Deployment process
      • Deploy through GUI
        • (Optional) Deploy ODP
        • Deploy OceanBase clusters using OCP
          • Deploy a two-replica OceanBase cluster with the arbitration service by using OCP
          • Deploy a three-replica OceanBase cluster by using OCP
          • Deploy a single-replica OceanBase cluster by using OCP
        • Configure deployment environment using OAT
          • Add a server
        • Deploy OCP
          • Deploy OCP
          • Create MetaDB
          • Upload installation packages
          • Overview
      • 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 three-replica OceanBase cluster using the CLI
          • Deploy a single-replica OceanBase cluster using the CLI
        • (Optional) Deploy ODP
      • Before deployment
        • Deploy OAT
        • Prepare the installation packages
        • Server configuration
        • Prepare servers
  • Migrate
    • Import data from SQL files to OceanBase Database
    • Overview
    • 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 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 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 data between OceanBase Database
      • Use OBLOADER & OBDUMPER to migrate data from a MySQL tenant to an Oracle tenant in 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 Oracle tenants in OceanBase Database
      • Use OBLOADER & OBDUMPER to migrate data between MySQL tenants in OceanBase Database
      • Use OBLOADER & OBDUMPER to migrate data from an Oracle tenant to a MySQL tenant in OceanBase Database
    • Bypass import
      • Import data in bypass mode by using the INSERT INTO SELECT statement
      • Import data in bypass mode by using the LOAD DATA statement
      • Overview
    • Migrate from MySQL databases to OceanBase Database
      • Use Flink CDC to synchronize data from a MySQL database 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 ChunJun to migrate data from a MySQL database to OceanBase Database
      • Migrate data from a MySQL database to OceanBase Database using CloudCanal
      • Use DataX to migrate table data from a MySQL database to OceanBase Database
      • Use DBCAT to migrate schemas from a MySQL database to OceanBase Database
      • Use Canal to synchronize data from a MySQL database to OceanBase Database
    • Migrate from CSV files to OceanBase Database
      • Import data by using the LOAD DATA statement
      • Use DataX to migrate CSV files to OceanBase Database
    • Migrate from OceanBase Database to Oracle databases
      • 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
      • Use OMS to migrate data from an Oracle tenant of OceanBase Database to an Oracle 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 data using SQL statements
      • Export data by using OUTFILE statements
      • Migrate resource units
      • Migrate data between tables
    • 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
  • Manage
    • Log on to an OceanBase tenant
    • Manage replicas
      • Overview
      • Replica distribution
        • Locality
        • Common locality operations
          • View locality
          • Adjust the distribution of replicas
          • Remove replicas
          • Add replicas
          • View the locality change history
          • Migrate units
          • Modify locality
      • Traffic distribution
      • Data distribution
    • 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
            • Non-optimal plan
            • Cardinality
            • Buffer tables
          • Hard parsing
          • Capacity issues
          • Internal wait events
      • SQL tuning
        • SQL tuning system
        • Execution plan optimization
          • Order and limit optimization
            • Overview
            • Optimization in ORDER BY + LIMIT scenarios
            • SORT assignment and optimization
          • Plan management
            • Plan cache
            • Disadvantages of the plan cache and countermeasures
            • Views related to the plan cache
          • Statistical information and row estimation
            • Overview
            • Use statistical information and row estimation
            • Statistical information
              • Query statistics
              • Overview
              • Manage statistical information
                • Overview
                • Lock statistics
                • Configure statistics collection strategies
                • Query historical versions of statistics and roll back to a specified version
                • Delete and set statistics
                • Import and export statistics
              • Collect statistical information
                • Automatic statistics collection
                • Overview
                • Manually collect statistics
            • Row estimation
              • Row estimation based on the selectivity
              • Overview
              • Row estimation based on the storage layer
          • Join order and join algorithm
            • Join order
            • Join types
            • Joins
            • Join algorithm
              • Nested loop joins
              • Common business issues
              • Hash joins
              • Merge joins
          • Index selection
            • Reduce row reads
            • Avoid sorting
            • Overview
            • Avoid table access by index primary key
        • Business logic optimization
          • SQL specifications
          • Schema specifications
        • Locate and analyze slow queries I
        • Locate and analyze slow queries (II)
        • Typical scenarios and cases
    • Daily inspection
      • Deadlock detection
      • Overview
      • Check tenant resource usage
      • Check cluster parameters
      • Check cluster resource usage
      • Check the host status
      • Check the NTP offset
      • Check the OBServer node status
      • End-to-end tracing
        • Show end-to-end tracing information
        • Process
        • Methods
        • Overview
    • Manage clusters
      • Overview
      • Cluster parameters
      • Common cluster operations
        • Delete a zone
        • Isolate a zone
        • Add a zone
        • Reset a cluster parameter
        • Restart a node
        • Delete a node
        • Modify a zone
        • Modify cluster parameters
        • Isolate a node
        • View cluster parameters
        • View a zone
        • Add a node
        • Start a zone
        • View a node
        • Replace a node
      • Troubleshoot common problems
        • Failures of a minority of nodes
        • Failures of the majority of nodes
    • Security and permissions
      • Overview
      • Access control
        • Network security access control
        • Row-level access control
        • RPC connection authentication
        • Overview
        • Users and permissions
          • Overview
          • MySQL mode
            • Privilege delegation
            • Drop a user
            • Lock or unlock a user
            • Grant privileges
            • Modify user privileges
            • Query user privileges
            • Create a user
            • Privilege types in MySQL mode
          • Oracle mode
            • Privilege types in Oracle mode
            • Modify user privileges
            • Grant indirect privileges
            • Query user privileges
            • Create a user
            • Privilege delegation
            • View the information of a user
            • Grant direct privileges
            • Drop a user
            • Lock or unlock a user
            • Manage roles
              • View roles
              • Create a role
              • Grant a role to a user
              • Overview
              • Activate or deactivate roles for a user
              • Revoke a role
              • Drop a role
              • Modify a role
              • Grant a role to another role
      • Transparent data encryption
        • Overview
        • MySQL mode
          • Enable transparent data encryption for existing tables
          • Decrypt a table
          • Enable transparent data encryption for new tables
        • Oracle mode
          • Decrypt a table
          • Enable transparent data encryption for existing tables
          • Enable transparent data encryption for new tables
      • Identification and authentication
        • MySQL mode
          • Identity authentication
          • Password complexity
          • Logon failure processing
        • Oracle mode
          • Identity authentication
          • Password complexity
          • Logon failure processing
      • 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
      • Data transmission encryption
        • ODP transmission encryption
        • OBServer transmission encryption
        • Overview
    • Backup and restore
      • Introduction to physical backup and restore
      • Experience physical backup and restore with simplified deployment
      • Deploy NFS
      • Optimize backup and restore performance
      • Restore by table
        • Preparations
        • Parameters related to table restore
        • View the table restore result
        • Views related to table restore
        • View the table restore progress
        • Restore data by table
        • Cancel table restore
      • 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
      • Log archive
        • Overview
        • Disable ARCHIVELOG
        • Change the log archive destination
        • View information about pieces
        • Views related to log archiving
        • View the archiving progress
        • Prepare for log archiving
        • View the archiving history
        • Suspend archiving
        • View archiving parameter settings
        • Enable ARCHIVELOG
      • Restore data
        • Replay logs to a standby tenant
        • Physical restore parameters
        • Views related to physical restore
        • Convert a standby tenant into primary tenant
        • Cancel physical restore
        • Preparations
        • Upgrade a tenant after restore
        • View the physical restore progress
        • View physical restore results
        • Perform physical restore
      • 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 for monitoring backup progress and results
    • Emergency response
      • Emergency response overview
      • Analysis, diagnosis, and decision-making procedure
      • Common emergency problem handling
        • Capacity issues
          • Node data disk full
          • obproxy thread exhaustion
          • Exceptions of SQL queries
          • Tenant memory full
          • Node network card overload
          • Tenant request queue backlog
          • Node disk I/O high
          • Node clog disk full
        • Hardware issues
          • Other hardware and network issues
          • Node failure
          • ODP failure
          • Network failure
        • Other cluster issues
          • Insufficiency or leakage of system memory
          • sys tenant or RootService exceptions
    • High availability
      • Flashback queries
      • High availability overview
      • 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 recovery feature
          • Create a standby tenant by using the BACKUP DATABASE PLUS ARCHIVELOG feature
        • Log transmission service
          • Overview
          • Configure log transmission service
            • Configure the log restore source
            • Set the log recovery endpoint
          • View log restore source information
          • View the log synchronization progress
          • Pause or resume log synchronization
          • Optimize the log synchronization performance
          • Set the log synchronization bandwidth limit
          • Set log synchronization compression
        • Log storage service
        • Switch roles
          • Switchover
          • Overview of tenant roles
          • Failover
        • Drop primary and standby tenants
      • Multi-replica disaster recovery
        • Disaster recovery architecture and levels
        • ODP high availability
        • Database-level high availability
        • Data link introduction
      • Arbitration high availability
        • Enable the arbitration service for a tenant
        • Remove the arbitration service for a cluster
        • Disable the arbitration service for a tenant
        • Query log stream upgrade/downgrade information
        • Replace the arbitration service for a cluster
        • Clear residual cluster information
        • Overview
        • Modify the log stream downgrade control time
      • 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
    • Manage tenants
      • Tenant introduction
      • Tenant capacity
      • Tenant types
      • User tenant introduction
      • Tenant system variables
      • Common tenant operations
        • Create a tenant
        • Resource isolation
          • Resource isolation overview
          • Manage resource isolation (Oracle mode)
            • Configure SQL statement-level resource isolation
            • Update a resource management plan config
            • Configure cgroups
            • Delete a resource management plan
            • Configure user-level resource isolation
            • Delete a resource management plan config
            • Clear cgroup configurations
            • Calibrate the disk performance
            • Delete a resource group
          • Manage resource isolation (MySQL mode)
            • Configure cgroups
            • Calibrate the disk performance
            • Configure user-level resource isolation
            • Configure SQL statement-level resource isolation
            • Update a resource management plan config
            • Delete a resource management plan config
            • Delete a resource management plan
            • Delete a resource group
            • Clear cgroup configurations
        • View tenant and resource information
        • View and set the tenant allowlist
        • View tenant system variables
        • Modify system variables of a tenant
        • Scale in/out
          • Introduction to scaling in/out
          • Modify the unit configs 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
        • Recover 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 unit configs
          • Drop unit configs
    • Troubleshooting
      • Overview
      • Bootstrap
      • Storage
        • Migration, replication, and rebuild tasks
        • Minor compaction and major compaction
        • Memory-related errors
      • Election
        • Election
        • Leader switchover exceptions
        • Absence of the leader
      • Transaction
        • Suspended transactions
        • Long-running transactions
        • Transaction-related errors
        • Transaction rollbacks
        • Idle transactions
      • Log synchronization-related errors
      • Physical standby database
        • Switchover failures
        • Log synchronization stuck for the physical standby database
      • Backup and restore
        • Physical restore failures
        • Data backup failures
      • Troubleshoot SQL execution errors
      • Application exception -- error message does not contain OceanBase error code
      • Application exception -- error message contains an OceanBase error code
    • Monitor
      • Overview
      • Cases
      • Metrics
        • System monitoring
          • Wait events
          • Metrics
          • Latch events
          • Overview
        • SQL monitoring
          • Overview
          • SQL audit
          • Execution plans
    • Logs
      • Overview
      • Log levels
      • Log stability
      • Log control
      • Log metrics
      • View logs
        • Query the log of a previous SQL request by using the SQL Trace feature
        • Search for the logs of a specific SQL request
  • Reference
    • SQL reference
      • Reserved keywords (Oracle mode)
      • Reserved keywords (MySQL mode)
      • SQL syntax
        • User tenants (MySQL mode)
          • Basic elements
            • Data types
              • SET type
              • Overview
              • ENUM type
              • Datetime types
                • TIME type
                • DATE, DATETIME, and TIMESTAMP types
                • Overview
                • YEAR type
              • Numeric types
                • Overview
                • Integer data types
                • Fixed-point data types
                • Floating-point data types
                • Bit value data type
              • Spatial data types
                • Overview
                • SRS
                • Create a spatial column
                • Create a spatial index
                • Spatial data formats
              • Large objects and text types
                • TEXT types
                • LOB type
                • Overview
                • BLOB types
              • JSON data types
                • Overview
                • Create a JSON value
                • Query and modify JSON values
                • Convert a JSON data type
              • String types
                • Overview
                • CHAR and VARCHAR
                • BINARY and VARBINARY
            • Expressions
              • Convert data types in expression evaluation
              • Expression syntax
              • Overview
            • 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
              • NULLs
              • Boolean values
              • Bit values
              • Numbers
              • Datetime values
            • Schema object names
            • User-defined variables
            • Comments
          • Operators
            • Bitwise operators
            • Date and time operators
            • CASE conditional operator
            • Operator precedence
            • Logical operators
            • BINARY operator
            • Assignment operators
            • Arithmetic operators
            • Overview
            • Concatenation operators
            • Comparison operators
          • Sequence pseudocolumns
          • Functions
            • Overview
            • Single-row functions
              • Mathematical functions
                • COS
                • GENERATOR
                • ZIPF
                • RANDOM
                • ACOS
                • CONV
                • ABS
                • LOG2
                • TAN
                • EXP
                • LOG10
                • ATAN
                • RAND
                • DEGREES
                • FLOOR
                • ATAN2
                • BIT_COUNT
                • LOG
                • POWER
                • CEIL
                • SIGN
                • PI
                • MOD
                • TRUNCATE
                • RADIANS
                • NEG
                • UNIFORM
                • NORMAL
                • SQRT
                • LN
                • ASIN
                • CRC32
                • RANDSTR
                • CEILING
                • POW
                • SIN
                • ROUND
                • COT
              • Datetime functions
                • FROM_DAYS
                • CURRENT_TIMESTAMP
                • TIME
                • SUBTIME
                • DATE_FORMAT
                • FROM_UNIXTIME
                • UTC_DATE
                • DATE_ADD
                • LOCALTIME
                • GET_FORMAT
                • USEC_TO_TIME
                • SECOND
                • TIME_TO_SEC
                • QUARTER
                • LAST_DAY
                • TIME_FORMAT
                • SEC_TO_TIME
                • MICROSECOND
                • CURRENT_DATE
                • YEARWEEK
                • TO_SECONDS
                • MINUTE
                • MAKEDATE
                • TIMESTAMPADD
                • YEAR
                • PERIOD_DIFF
                • SUBDATE
                • DAYOFYEAR
                • SYSDATE
                • UTC_TIMESTAMP
                • HOUR
                • CURDATE
                • DAYOFWEEK
                • TIMEDIFF
                • STR_TO_DATE
                • MONTH
                • WEEK
                • EXTRACT
                • MAKETIME
                • DAY
                • UNIX_TIMESTAMP
                • WEEKDAY
                • ADDTIME
                • CURTIME
                • DAYNAME
                • DAYOFMONTH
                • DATE_SUB
                • TIMESTAMPDIFF
                • CURRENT_TIME
                • UTC_TIME
                • PERIOD_ADD
                • WEEKOFYEAR
                • NOW
                • DATEDIFF
                • TO_DAYS
                • MONTHNAME
                • CONVERT_TZ
                • ADDDATE
                • DATE
                • LOCALTIMESTAMP
                • TIMESTAMP
                • TIME_TO_USEC
              • String functions
                • UNHEX
                • RTRIM
                • UCASE
                • REPLACE
                • LOWER
                • CONCAT_WS
                • REGEXP_SUBSTR
                • OCTET_LENGTH
                • LEFT
                • REGEXP_REPLACE
                • REGEXP_LIKE
                • WEIGHT_STRING
                • CONCAT
                • IP2INT
                • LPAD
                • BIN
                • RPAD
                • SUBSTRING
                • SPACE
                • FORMAT
                • MAKE_SET
                • REPEAT
                • ASCII
                • LOCATE
                • FROM_BASE64
                • SOUNDEX
                • INSERT
                • TO_BASE64
                • OCT
                • FIELD
                • QUOTE
                • CHARACTER_LENGTH
                • HEX
                • RLIKE
                • POSITION
                • REVERSE
                • REGEXP
                • STRCMP
                • EXPORT_SET
                • INSTR
                • SUBSTR
                • SUBSTRING_INDEX
                • BIT_LENGTH
                • REGEXP_INSTR
                • MID
                • LCASE
                • UPPER
                • ORD
                • ELT
                • LENGTH
                • CHAR
                • TRIM
                • CHAR_LENGTH
                • RIGHT
                • FIND_IN_SET
                • INT2IP
                • LTRIM
              • Comparison functions
                • INTERVAL
                • LEAST
                • GREATEST
                • ISNULL
              • Conversion functions
                • CAST
                • CONVERT
                • SCN_TO_TIMESTAMP
                • TIMESTAMP_TO_SCN
              • Process control functions
                • IF
                • NULLIF
                • IFNULL
                • ORA_DECODE
                • CASE
            • Aggregate functions
              • VAR_POP
              • GROUPING
              • GROUP_CONCAT
              • STD
              • COUNT
              • VARIANCE
              • STDDEV_POP
              • MIN
              • BIT_AND
              • SUM
              • BIT_XOR
              • AVG
              • STDDEV
              • APPROX_COUNT_DISTINCT
              • VAR_SAMP
              • MAX
              • BIT_OR
              • STDDEV_SAMP
            • 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
              • RANDOM_BYTES
              • DES_ENCRYPT
              • COMPRESS
              • UNCOMPRESS
              • SHA1
              • SHA2
              • AES_ENCRYPT
              • DES_DECRYPT
              • ENCODE
              • UNCOMPRESSED_LENGTH
              • ENCRYPT
              • MD5
              • DECODE
              • SHA
              • VALIDATE_PASSWORD_STRENGTH
            • Information functions
              • SESSION_USER
              • SCHEMA
              • BENCHMARK
              • LAST_INSERT_ID
              • SYSTEM_USER
              • ICU_VERSION
              • CONNECTION_ID
              • COERCIBILITY
              • FOUND_ROWS
              • VERSION
              • CURRENT_USER
              • USER
              • COLLATION
              • CHARSET
              • ROW_COUNT
              • DATABASE
              • OB_VERSION
              • OB_TRANSACTION_ID
            • JSON functions
              • Overview
              • JSON_TABLE
              • Search JSON text functions
                • JSON_OVERLAPS
                • JSON_EXTRACT
                • JSON_KEYS
                • JSON_CONTAINS
                • JSON_CONTAINS_PATH
                • MEMBER OF
                • JSON_SEARCH
                • JSON_VALUE
              • Return JSON text property functions
                • JSON_DEPTH
                • JSON_LENGTH
                • JSON_TYPE
                • JSON_VALID
              • Modify JSON text functions
                • JSON_REPLACE
                • JSON_MERGE_PATCH
                • JSON_MERGE
                • JSON_SET
                • JSON_UNQUOTE
                • JSON_REMOVE
                • JSON_INSERT
                • JSON_ARRAY_INSERT
                • JSON_ARRAY_APPEND
                • JSON_MERGE_PRESERVE
              • Create JSON text functions
                • JSON_OBJECT
                • JSON_QUOTE
                • JSON_ARRAY
              • JSON aggregate functions
                • JSON_ARRAYAGG
                • JSON_OBJECTAGG
              • JSON utility functions
                • JSON_PRETTY
                • JSON_STORAGE_SIZE
            • Spatial functions
              • Spatial relation functions
              • Functions that create geometry values
              • Geometry property functions
              • Geometry format conversion functions
              • Spatial operation functions
            • Performance schema functions
              • FORMAT_BYTES
              • FORMAT_PICO_TIME
            • 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
            • Joins
            • Overview
            • Subqueries
          • SQL statements
            • General syntax
            • Common Table Expressions
            • ALTER DATABASE
            • ALTER OUTLINE
            • ALTER EXTERNAL TABLE
            • ALTER SEQUENCE
            • MAJOR and MINOR
            • ALTER TABLE
            • ALTER TABLEGROUP
            • ALTER TABLEGROUP
            • ALTER USER
            • ALTER VIEW
            • ANALYZE
            • CREATE DATABASE
            • CREATE DATABASE LINK
            • CREATE INDEX
            • CREATE EXTERNAL TABLE
            • CREATE MATERIALIZED VIEW
            • CREATE MATERIALIZED VIEW LOG
            • CREATE OUTLINE
            • CREATE RESTORE POINT
            • 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 TABLE
            • DROP TABLEGROUP
            • DROP TABLESPACE
            • DROP SEQUENCE
            • DROP USER
            • DROP VIEW
            • EXECUTE
            • EXPLAIN
            • FLASHBACK
            • GRANT
            • HELP
            • INSERT
            • KILL
            • LOAD DATA
            • LOCK TABLES
            • MERGE
            • OPTIMIZE
            • PREPARE
            • PURGE
            • PURGE RECYCLEBIN
            • RENAME USER
            • RENAME TABLE
            • REPLACE
            • REVOKE
            • SAVEPOINT
            • SCHEMA
            • SELECT INTO
            • SELECT
              • SELECT statement
              • OVER clause
              • JOIN clause
              • UNION clause
            • SET
            • SET CHARSET
            • SET NAMES
            • SET PASSWORD
            • SET TRANSACTION
            • SHOW
            • TRANSACTION
            • TRUNCATE TABLE
            • UPDATE
            • USE
            • VALUES
          • DDL feature
            • Column type change rules
            • Generated column operations
            • Column operations
            • Foreign key operations
            • Partition operations
            • Overview
            • Online and offline DDL operations
            • Primary key operations
            • Index operations
            • Conversion rules for numeric data types
            • Table operations
        • User tenants (Oracle mode)
          • Introduction to SQL
          • Pseudo columns
            • Sequence pseudocolumns
            • Overview
            • ORA_ROWSCN pseudocolumn
            • ROWNUM pseudocolumn
            • Hierarchical query pseudocolumns
            • ROWID pseudocolumn
          • Basic elements
            • Character sets and collations
            • Built-in data types
              • Rowid data types
              • Any types
              • RAW data type
              • Overview
              • User-defined data types
              • Numeric data types
                • Precedence of numeric data types
                • NUMBER data type
                • FLOAT data type
                • Overview
                • Floating-point numbers
              • Datetime and interval data types
                • INTERVAL YEAR TO MONTH data type
                • TIMESTAMP data type
                • TIMESTAMP WITH TIME ZONE data type
                • DATE data type
                • INTERVAL DAY TO SECOND data type
                • Calculation of dates, timestamps, and intervals
                • TIMESTAMP WITH LOCAL TIME ZONE data type
                • Overview
              • Large object data types
                • CLOB data type
                • BLOB data type
                • Overview
              • JSON data types
                • Create JSON columns
                • Query JSON data
                • Overview
                • Conversion rules for JSON data types
              • Character data types
                • CHAR data type
                • Overview
                • NVARCHAR2 data type
                • NCHAR data type
                • VARCHAR2 data type
                • VARCHAR data type
              • XML data types
                • Query XMLType data
                • XML data definition
                • Convert XMLType data
                • Create an XMLType column
                • Overview
            • Database objects
              • Schema objects
              • Non-schema objects
            • Database naming conventions
              • Suggestions on schema object names
              • Overview
            • 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 object reference methods
              • Reference an attribute or method of an object type
              • Overview
              • Reference partitioned tables and indexes
              • Reference schema objects
              • Reference objects in a remote database
                • Create a DBLink
                • Reference a DBLink
            • Literals
              • Overview
              • Text literals
              • Numeric literals
              • Datetime literals
                • Date literals
                • Timestamp literals
              • Interval literals
            • Data type comparison rules
              • Data type conversion rules
              • Date value comparison rules
              • Overview
              • Security considerations for data conversion
              • Numeric value comparison rules
              • Data type precedence
              • Character value comparison rules
            • Format model
              • Number format models
              • RR datetime format element
              • Datetime format models
              • Overview
              • String-to-date conversion rules
            • NULL value
              • Overview
              • NULLs in comparison conditions
              • NULLs in SQL functions
              • NULLs in conditional expressions
          • Operators
            • Arithmetic operators
            • Set operators
            • COLLATE operator
            • Operator precedence
            • Overview
            • Hierarchical query operators
            • Concatenation operator
          • Functions
            • Overview
            • Single-row functions
              • Numeric functions
                • ABS
                • ACOS
                • ASIN
                • ATAN
                • ATAN2
                • BITAND
                • CEIL
                • COS
                • COSH
                • EXP
                • FLOOR
                • LN
                • GENERATOR
                • 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
                • CONCAT
                • INITCAP
                • CHR
                • NLS_LOWER
                • REPLACE
                • LPAD
                • SUBSTR
                • LTRIM
                • NLSSORT
                • TRANSLATE ... USING
                • TRIM
                • UPPER
                • REGEXP_REPLACE
                • TRANSLATE
                • RTRIM
                • RPAD
                • LOWER
                • NLS_UPPER
                • REGEXP_SUBSTR
              • String functions that return numbers
                • INSTR
                • LENGTH
                • ASCII
                • 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
                • TO_CHAR(number)
                • TO_TIMESTAMP
                • RAWTOHEX
                • ASCIISTR
                • TO_DATE
                • TO_NCHAR(character)
                • TO_NCHAR(number)
                • TO_YMINTERVAL
                • TO_MULTI_BYTE
                • SCN_TO_TIMESTAMP
                • TO_BLOB
                • CHARTOROWID
                • CONVERT
                • TO_BINARY_DOUBLE
                • ROWIDTONCHAR
                • TO_DSINTERVAL
                • TO_NUMBER
                • TIMESTAMP_TO_SCN
                • TO_CHAR(datetime)
                • TO_BINARY_FLOAT
                • NUMTOYMINTERVAL
                • TO_CLOB
                • NUMTODSINTERVAL
                • UNISTR
                • HEXTORAW
                • TO_CHAR(character)
                • ROWIDTOCHAR
                • TO_NCHAR(datetime)
                • TO_TIMESTAMP_TZ
                • CAST
                • TO_SINGLE_BYTE
              • Encoding and decoding functions
                • ORA_HASH
                • DECODE
                • VSIZE
                • DUMP
              • Null value related functions
                • NULLIF
                • NVL2
                • COALESCE
                • NANVL
                • NVL
                • LNNVL
              • Environment and identifier functions
                • SYS_CONTEXT
                • SYS_GUID
                • UID
                • USER
                • USERENV
                • OB_VERSION
              • Hierarchical functions
                • SYS_CONNECT_BY_PATH
              • JSON functions
                • Overview
                • Modify JSON text functions
                  • JSON_MERGEPATCH
                • Create JSON text functions
                  • JSON_ARRAY
                  • JSON_OBJECTAGG
                  • JSON_ARRAYAGG
                  • JSON_OBJECT
                • Query JSON text functions
                  • JSON_VALUE
                  • JSON_QUERY
                  • JSON_EXISTS
                  • JSON_TABLE
                • Validate JSON text functions
                  • JSON_EQUAL
              • XML functions
                • Overview
                • Construct XMLType data functions
                  • XMLAGG
                  • XMLATTRIBUTES
                  • XMLPARSE
                  • XMLELEMENT
                • Modify XMLType data functions
                  • UPDATEXML
                • Query XMLType data functions
                  • EXTRACTVALUE
                  • XMLSERIALIZE
                  • XMLCAST
                  • EXTRACT
            • Aggregate functions
              • WMSYS.WM_CONCAT/WM_CONCAT
              • GROUPING
              • COVAR_POP
              • GROUPING_ID
              • PERCENTILE_DISC
              • LISTAGG
              • ROLLUP
              • VAR_SAMP
              • GROUP_ID
              • STDDEV_POP
              • SUM
              • MAX
              • VAR_POP
              • CORR
              • AVG
              • STDDEV_SAMP
              • STDDEV
              • MIN
              • PERCENT_RANK
              • VARIANCE
              • CUME_DIST
              • PERCENTILE_CONT
              • RANK
              • REGR_(Linear Regression)
              • DENSE_RANK
              • APPROX_COUNT_DISTINCT
              • MEDIAN
              • KEEP
              • COVAR_SAMP
              • COUNT
            • Analysis functions
              • Analytic functions
              • 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
            • Function expressions
            • Datetime expressions
            • Column expressions
            • Compound expressions
            • Scalar subquery expressions
            • Overview
            • Case expressions
            • Expression list
            • Interval expressions
            • CURSOR expressions
            • Type constructor expressions
            • Simple expressions
          • 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
            • DUAL table query
            • Simple query
            • Hierarchical query
            • Subquery
            • Join query
            • Compound query
            • Overview
          • 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
              • 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
              • UPDATE
              • MERGE
              • PURGE
              • EXPLAIN
              • INSERT
              • DELETE
              • SELECT
                • Set-based SELECT
                • SIMPLE SELECT
                • WITH clause
            • DCL
              • SET PASSWORD
              • TRANSACTION
              • GRANT
              • SHRINK
              • SET VARIABLE
              • SET NAMES
              • AUDIT
              • ANALYZE
              • FLASHBACK TABLE BEFORE DROP
              • ALTER SYSTEM KILL SESSION
              • LOAD DATA
              • LOCK TABLE
              • COMMENT
              • COMMIT
              • REVOKE
              • SAVEPOINT
              • KILL
              • ROLLBACK
              • SHOW
              • SET ROLE
          • 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
        • System tenants
          • ALTER RESOURCE UNIT
          • CREATE RESOURCE POOL
          • SET DECRYPTION
          • DROP RESOURCE UNIT
          • CREATE TENANT
          • CREATE RESOURCE UNIT
          • SET ENCRYPTION
          • ALTER RESOURCE POOL
          • ALTER RESOURCE TENANT
          • CREATE STANDBY TENANT
          • DROP TENANT
          • ALTER TENANT
          • DROP RESOURCE POOL
          • 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 CLONE
            • CANCEL DELETE BACKUP
            • CANCEL MIGRATE UNIT
            • CHANGE TENANT
            • CANCEL RESTORE
            • CANCEL RECOVER TABLE
            • 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
            • WASH MEMORY FRAGMENTATION
            • ZONE
      • PL reference
        • PL reference (Oracle mode)
          • Reserved PL keywords
          • DDL operations on stored PL units
            • Overview
            • DROP FUNCTION
            • CREATE PACKAGE BODY
            • CREATE TRIGGER
            • DROP TYPE BODY
            • CREATE FUNCTION
            • CREATE PACKAGE
            • CREATE PROCEDURE
            • DROP TYPE
            • DROP PROCEDURE
            • DROP TRIGGER
            • ALTER PACKAGE
            • CREATE TYPE
            • DROP PACKAGE
            • ALTER TRIGGER
            • ALTER PROCEDURE
            • CREATE TYPE BODY
            • ALTER TYPE
            • ALTER FUNCTION
          • PL static SQL
            • Transaction processing and control
            • Overview
            • Cursors
              • Overview
              • Cursor attributes
              • Implicit cursors
              • Explicit cursors
              • Cursor variables
              • Traverse cursor data by using the FOR loop
              • Modify and drop a cursor
            • Autonomous transactions
              • Call autonomous functions from SQL statements
              • Autonomous triggers
              • Control autonomous transactions
              • Overview
          • PL stored procedures and functions
            • Overview
            • Create a stored procedure
            • Create a function
            • Manage stored procedures and functions
            • Privilege control
            • Pipeline functions
              • Overview
              • Application
              • Create a pipelined table function
            • User-defined functions
              • Use user-defined aggregate functions
              • Overview
              • Interface for user-defined aggregate functions
              • Create user-defined aggregate functions
            • Collection of stored procedure information and its impact on parallel execution of SQL statements
            • PL DBLinks
          • 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
              • CLEAN_AUDIT_TRAIL
              • SET_LAST_ARCHIVE_TIMESTAMP
              • SET_PURGE_JOB_STATUS
              • Overview
              • CREATE_PURGE_JOB
              • DROP_PURGE_JOB
            • 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
              • RUN
              • Overview
              • SUBMIT
              • INTERVAL
              • BROKEN
              • ZONE
              • WHAT
              • USER_EXPORT
              • REMOVE
              • NEXT_DATE
              • CHANGE
            • DBMS_LOB
              • Overview
              • APPEND
              • CLOSE
              • COPY
              • CREATETEMPORARY
              • ERASE
              • FREETEMPORARY
              • GETLENGTH
              • ISOPEN
              • INSTR
              • ISTEMPORARY
              • OPEN
              • READ
              • SUBSTR
              • TRIM
              • WRITE
              • WRITEAPPEND
            • DBMS_LOCK
              • REQUEST
              • SLEEP
              • ALLOCATE_UNIQUE
              • ALLOCATE_UNIQUE_AUTONOMOUS
              • Overview
            • 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
              • PURGE
              • Overview
            • DBMS_RANDOM
              • TERMINATE
              • STRING
              • Overview
              • RANDOM
              • NORMAL
              • SEED
              • INITIALIZE
              • VALUE
            • DBMS_RESOURCE_MANAGER
              • CREATE_PLAN
              • CREATE_PLAN_DIRECTIVE
              • DELETE_CONSUMER_GROUP
              • DELETE_PLAN
              • Overview
              • UPDATE_PLAN_DIRECTIVE
              • CREATE_CONSUMER_GROUP
              • DELETE_PLAN_DIRECTIVE
              • SET_CONSUMER_GROUP_MAPPING
            • DBMS_SCHEDULER
              • Overview
              • SET_ATTRIBUTE
              • DROP_JOB
              • DISABLE
              • SET_JOB_ARGUMENT_VALUE
              • GENERATE_JOB_NAME
              • ENABLE
              • RUN_JOB
              • DROP_PROGRAM
              • CREATE_PROGRAM
              • DEFINE_PROGRAM_ARGUMENT
              • CREATE_JOB
            • DBMS_SESSION
              • SET_CONTEXT
              • CLEAR_CONTEXT
              • SET_IDENTIFIER
              • CLEAR_IDENTIFIER
              • CLEAR_ALL_CONTEXT
              • Overview
              • RESET_PACKAGE
            • DBMS_SQL
              • DEFINE_ARRAY
              • EXECUTE_AND_FETCH
              • DESCRIBE_COLUMNS
              • Overview
              • BIND_VARIABLE
              • OPEN_CURSOR
              • EXECUTE
              • COLUMN_VALUE
              • CLOSE_CURSOR
              • LAST_ERROR_POSITION
              • IS_OPEN
              • DEFINE_COLUMN
              • PARSE
              • FETCH_ROWS
              • VARIABLE_VALUE
            • DBMS_STATS
              • GET_PARAM
              • LOCK_SCHEMA_STATS
              • LOCK_PARTITION_STATS
              • RESET_PARAM_DEFAULTS
              • UNLOCK_PARTITION_STATS
              • IMPORT_COLUMN_STATS
              • CREATE_STAT_TABLE
              • EXPORT_INDEX_STATS
              • EXPORT_SCHEMA_STATS
              • SET_SYSTEM_STATS
              • GATHER_INDEX_STATS
              • SET_GLOBAL_PREFS
              • GATHER_SCHEMA_STATS
              • COPY_TABLE_STATS
              • EXPORT_TABLE_STATS
              • RESET_GLOBAL_PREF_DEFAULTS
              • SET_PARAM
              • GATHER_SYSTEM_STATS
              • FLUSH_DATABASE_MONITORING_INFO
              • IMPORT_TABLE_STATS
              • UNLOCK_TABLE_STATS
              • IMPORT_SCHEMA_STATS
              • EXPORT_COLUMN_STATS
              • RESTORE_TABLE_STATS
              • GATHER_TABLE_STATS
              • PURGE_STATS
              • DELETE_SCHEMA_STATS
              • DELETE_TABLE_STATS
              • DELETE_TABLE_PREFS
              • GET_PREFS
              • SET_INDEX_STATS
              • DELETE_INDEX_STATS
              • DELETE_COLUMN_STATS
              • UNLOCK_SCHEMA_STATS
              • SET_TABLE_STATS
              • SET_TABLE_PREFS
              • ALTER_STATS_HISTORY_RETENTION
              • DELETE_SCHEMA_PREFS
              • RESTORE_SCHEMA_STATS
              • SET_COLUMN_STATS
              • DELETE_SYSTEM_STATS
              • Overview
              • DROP_STAT_TABLE
              • SET_SCHEMA_PREFS
              • GET_STATS_HISTORY_AVAILABILITY
              • LOCK_TABLE_STATS
              • GET_STATS_HISTORY_RETENTION
              • IMPORT_INDEX_STATS
            • DBMS_UDR
              • DISABLE_RULE
              • ENABLE_RULE
              • REMOVE_RULE
              • Overview
              • CREATE_RULE
            • DBMS_UTILITY
              • IS_CLUSTER_DATABASE
              • OLD_CURRENT_SCHEMA
              • GET_SQL_HASH
              • FORMAT_ERROR_BACKTRACE
              • DB_VERSION
              • FORMAT_ERROR_STACK
              • GET_ENDIANNESS
              • ACTIVE_INSTANCES
              • Overview
              • GET_HASH_VALUE
              • GET_PARAMETER_VALUE
              • PORT_STRING
              • TABLE_TO_COMMA
              • NAME_RESOLVE
              • GET_TIME
              • IS_BIT_SET
              • OLD_CURRENT_USER
              • FORMAT_CALL_STACK
              • NAME_TOKENIZE
              • CURRENT_INSTANCE
            • DBMS_WORKLOAD_REPOSITORY
              • Overview
              • ASH_REPORT
            • DBMS_XA
              • DBMS_XA_XID object type
              • XA_RECOVER
              • DBMS_XA constants
              • XA_PREPARE
              • XA_SETTIMEOUT
              • XA_GETLASTOER
              • XA_START
              • XA_END
              • XA_ROLLBACK
              • XA_FORGET
              • Overview
              • DIST_TXN_SYNC
              • XA_COMMIT
            • 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
              • ODCIStatsOptions.Options
              • ODCIIndexInfo.IndexParaDegree
              • ODCIEnv.CallProperty
              • Overview
              • ODCIIndexInfo.IndexInfoFlags
              • ODCIIndexAlter
              • ODCIStatsOptions.Flags
              • ScnFlg
              • ODCIIndexAlter parameter alter_option
              • ODCIArgDesc.ArgType
              • ODCIPredInfo.Flags
              • ODCIQueryInfo.Flags
              • Return Status
              • ODCIEnv.Envflags
            • 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
              • BIT_AND
              • CAST_TO_VARCHAR2
              • CAST_TO_BINARY_FLOAT
              • Overview
              • CAST_TO_RAW
              • CAST_FROM_BINARY_DOUBLE
              • BIT_OR
              • REVERSE
              • CAST_FROM_BINARY_FLOAT
              • CAST_TO_BINARY_DOUBLE
              • COMPARE
              • CONCAT
              • CAST_FROM_BINARY_INTEGER
              • BIT_XOR
              • CAST_FROM_NUMBER
              • CAST_TO_BINARY_INTEGER
              • SUBSTR
              • BIT_COMPLEMENT
              • COPIES
              • LENGTH
              • CAST_TO_NUMBER
            • ANYDATA TYPE
              • ENDCREATE member procedure
              • SET* member procedures
              • GETTYPE member function
              • Overview
              • GET* member functions
              • PIECEWISE member procedure
              • BEGINCREATE static procedure
              • GETTYPENAME member function
            • XMLType
              • CREATEXML
              • XMLTYPE
              • GETSTRINGVAL
              • Overview
              • TRANSFORM
              • GETCLOBVAL
          • PL triggers
            • Query trigger information
            • INSTEAD OF DML trigger
            • Create a DML trigger
            • Overview
            • Disable or enable a trigger
            • Modify and drop a trigger
            • Compound DML trigger
          • PL label security package
            • Overview
            • 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
            • SA_LABEL_ADMIN label management package
              • SA_LABEL_ADMIN.ALTER_LABEL
              • SA_LABEL_ADMIN.CREATE_LABEL
              • SA_LABEL_ADMIN.DROP_LABEL
              • Overview
            • SA_POLICY_ADMIN policy management package
              • Overview
              • SA_POLICY_ADMIN.APPLY_TABLE_POLICY
              • SA_POLICY_ADMIN.DISABLE_TABLE_POLICY
              • SA_POLICY_ADMIN.REMOVE_TABLE_POLICY
              • SA_POLICY_ADMIN.ENABLE_TABLE_POLICY
            • SA_USER_ADMIN user label management package
              • SA_USER_ADMIN.SET_LEVELS
              • Overview
            • SA_SYSDBA policy management package
              • Overview
              • SA_SYSDBA.ALTER_POLICY
              • SA_SYSDBA.DROP_POLICY
              • SA_SYSDBA.CREATE_POLICY
            • SA_COMPONENTS label component package
              • Overview
              • SA_COMPONENTS.ALTER_LEVEL
              • SA_COMPONENTS.CREATE_LEVEL
              • SA_COMPONENTS.DROP_LEVEL
          • PL collections and records
            • Overview
            • Collections
            • Associative arrays
            • Varrays
            • Nested tables
            • Collection constructor function
            • Collection methods
              • COUNT method
              • EXISTS method
              • EXTEND method
              • FIRST and LAST methods
              • Overview
              • DELETE method
              • TRIM 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 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 language basics
            • Subprograms
            • Scope and visibility of identifiers
            • Lexical units
            • Error-reporting functions
            • Character sets
            • Declare
            • Expressions
            • PL blocks
            • Reference identifiers
            • Assign values
          • PL exception handling
            • Exception handling processes
            • Exception types
            • Overview
            • Compile-Time alerts
          • PL process control
            • Overview
            • Sequential control
            • Loop control
            • Conditional control
          • PL dynamic SQL
            • DBMS_SQL system package
            • Execute dynamic SQL statements
            • Overview
          • PL packages
            • Create a program package
            • Manage program packages
            • Definition of the PL environment by the STANDARD package
            • Overview
            • Overloaded programs in a package
        • PL reference (MySQL mode)
          • Syntax of PL stored programs
          • PL stored procedures
            • Overview
            • Variables in stored programs
            • Stored procedures
            • Stored functions
            • Trigger
            • Limitations on stored programs
          • PL cursors
            • Overview
            • Cursor execution process
            • Limitations on server cursors
          • PL conditional control statements
            • REPEAT
            • LEAVE
            • IF
            • RETURN
            • WHILE
            • LOOP
            • CASE
            • ITERATE
          • 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 TRIGGERS
            • SHOW CREATE TRIGGER
            • SHOW FUNCTION STATUS
            • SHOW CREATE FUNCTION
            • SHOW PROCEDURE STATUS
            • SHOW CREATE PROCEDURE
          • PL related dictionary views
            • INFORMATION_SCHEMA ROUTINES
            • INFORMATION_SCHEMA PARAMETERS
            • INFORMATION_SCHEMA TRIGGERS
          • PL exception handling
            • Exception handling and OUT/INOUT parameters
            • DECLARE ... CONDITION
            • Limitations on exception handling
            • DECLARE ... HANDLER
            • RESIGNAL
            • Diagnostics area
            • GET DIAGNOSTICS
            • Overview
            • Effective scope of an exception handler
            • SIGNAL
          • PL system packages
            • Overview
            • DBMS_RESOURCE_MANAGER
              • CREATE_PLAN
              • DELETE_PLAN_DIRECTIVE
              • DELETE_CONSUMER_GROUP
              • SET_CONSUMER_GROUP_MAPPING
              • CREATE_CONSUMER_GROUP
              • DELETE_PLAN
              • Overview
              • CREATE_PLAN_DIRECTIVE
              • UPDATE_PLAN_DIRECTIVE
            • DBMS_STATS
              • GET_PREFS
              • GATHER_INDEX_STATS
              • DROP_STAT_TABLE
              • GET_STATS_HISTORY_AVAILABILITY
              • CREATE_STAT_TABLE
              • SET_TABLE_STATS
              • GATHER_SCHEMA_STATS
              • DELETE_SYSTEM_STATS
              • DELETE_COLUMN_STATS
              • UNLOCK_SCHEMA_STATS
              • SET_PARAM
              • IMPORT_SCHEMA_STATS
              • RESET_PARAM_DEFAULTS
              • GET_PARAM
              • SET_TABLE_PREFS
              • GET_STATS_HISTORY_RETENTION
              • DELETE_TABLE_STATS
              • DELETE_INDEX_STATS
              • LOCK_PARTITION_STATS
              • FLUSH_DATABASE_MONITORING_INFO
              • EXPORT_INDEX_STATS
              • UNLOCK_PARTITION_STATS
              • UNLOCK_TABLE_STATS
              • SET_GLOBAL_PREFS
              • DELETE_TABLE_PREFS
              • ALTER_STATS_HISTORY_RETENTION
              • SET_COLUMN_STATS
              • SET_INDEX_STATS
              • SET_SYSTEM_STATS
              • IMPORT_TABLE_STATS
              • EXPORT_TABLE_STATS
              • IMPORT_COLUMN_STATS
              • DELETE_SCHEMA_PREFS
              • IMPORT_INDEX_STATS
              • LOCK_TABLE_STATS
              • SET_SCHEMA_PREFS
              • GATHER_SYSTEM_STATS
              • RESET_GLOBAL_PREF_DEFAULTS
              • EXPORT_COLUMN_STATS
              • LOCK_SCHEMA_STATS
              • RESTORE_SCHEMA_STATS
              • EXPORT_SCHEMA_STATS
              • PURGE_STATS
              • GATHER_TABLE_STATS
              • DELETE_SCHEMA_STATS
              • Overview
              • RESTORE_TABLE_STATS
            • DBMS_XPLAN
              • DISPLAY_ACTIVE_SESSION_PLAN
              • DISABLE_OPT_TRACE
              • DISPLAY
              • DISPLAY_CURSOR
              • ENABLE_OPT_TRACE
              • SET_OPT_TRACE_PARAMETER
              • Overview
              • DISPLAY_SQL_PLAN_BASELINE
            • DBMS_UDR
              • CREATE_RULE
              • DISABLE_RULE
              • Overview
              • ENABLE_RULE
              • REMOVE_RULE
            • DBMS_MVIEW_STAT
              • Overview
              • SET_SYSTEM_DEFAULT
              • SET_MVREF_STATS_PARAMS
              • PURGE_REFRESH_STATS
            • DBMS_WORKLOAD_REPOSITORY
              • Overview
              • ASH_REPORT
              • CREATE_SNAPSHOT
              • DROP_SNAPSHOT_RANGE
              • MODIFY_SNAPSHOT_SETTINGS
            • DBMS_MVIEW
              • PURGE_LOG
              • REFRESH
              • Overview
            • DBMS_TRUSTED_CERTIFICATE_MANAGER
              • DELETE_TRUSTED_CERTIFICATE
              • Overview
              • ADD_TRUSTED_CERTIFICATE
              • UPDATE_TRUSTED_CERTIFICATE
          • Reserved and non-reserved PL keywords
        • What is PL
          • PL architecture
          • Overview
          • Main features of PL
      • SQL specifications and practices
        • Limitations on writing SQL statements
        • SQL writing specifications
          • Transactions
          • Table scan
          • SELECT statements
          • Multi-table join specifications
          • Cache
          • Hint
          • DML statements
          • Others
        • SQL statement examples
          • Implicit data type conversion
          • Join tables
          • Weak consistency read
          • Pagination queries
    • System views
      • Overview of system views
      • Changes in views in OceanBase Database V3.x and V4.x
      • Common statistical events
      • General wait events
      • Overview
      • SYS tenant views
        • Dictionary views
          • oceanbase.DBA_OB_BALANCE_TASKS
          • oceanbase.DBA_SUBPART_COL_STATISTICS
          • mysql.time_zone_name
          • oceanbase.DBA_RSRC_PLAN_DIRECTIVES
          • oceanbase.CDB_OB_RESTORE_HISTORY
          • oceanbase.DBA_OB_LS_LOCATIONS
          • oceanbase.DBA_SUBPART_KEY_COLUMNS
          • oceanbase.DBA_OB_TENANTS
          • oceanbase.DBA_OB_TABLEGROUP_TABLES
          • oceanbase.CDB_OB_IMPORT_TABLE_TASK_HISTORY
          • information_schema.PARTITIONS
          • DBA_MVREF_STMT_STATS
          • oceanbase.DBA_WR_SQLTEXT
          • oceanbase.CDB_OB_BACKUP_PARAMETER
          • oceanbase.DBA_OB_TENANT_EVENT_HISTORY
          • oceanbase.CDB_OB_BACKUP_DELETE_JOBS
          • oceanbase.CDB_OB_LS
          • oceanbase.DBA_RSRC_GROUP_MAPPINGS
          • oceanbase.CDB_OB_TABLET_CHECKSUM_ERROR_INFO
          • oceanbase.DBA_OB_RESTORE_HISTORY
          • oceanbase.DBA_OB_ARCHIVELOG_SUMMARY
          • DBA_OB_CLONE_PROGRESS
          • oceanbase.DBA_OB_TRANSFER_PARTITION_TASK_HISTORY
          • oceanbase.CDB_OB_BALANCE_JOBS
          • oceanbase.DBA_OB_SERVER_JOBS
          • information_schema.GLOBAL_STATUS
          • oceanbase.DBA_OB_LS_REPLICA_TASKS
          • oceanbase.CDB_OB_TRANSFER_PARTITION_TASKS
          • oceanbase.CDB_WR_CONTROL
          • oceanbase.DBA_OB_USER_DEFINED_RULES
          • oceanbase.CDB_OB_TABLE_LOCATIONS
          • oceanbase.CDB_WR_SQLTEXT
          • oceanbase.CDB_OB_KV_TTL_TASKS
          • oceanbase.DBA_OB_CONCURRENT_LIMIT_SQL
          • oceanbase.CDB_TAB_COLS_V$
          • DBA_MVREF_STATS_SYS_DEFAULTS
          • CDB_MVREF_STATS_PARAMS
          • oceanbase.DBA_OB_OUTLINE_CONCURRENT_HISTORY
          • oceanbase.DBA_RSRC_CONSUMER_GROUPS
          • oceanbase.DBA_WR_STATNAME
          • oceanbase.DBA_SEQUENCES
          • oceanbase.DBA_OB_FREEZE_INFO
          • oceanbase.DBA_OB_ZONE_MAJOR_COMPACTION
          • oceanbase.DBA_OB_ROOTSERVICE_EVENT_HISTORY
          • oceanbase.DBA_WR_SNAPSHOT
          • oceanbase.DBA_OB_USERS
          • oceanbase.CDB_OB_RECOVER_TABLE_JOBS
          • oceanbase.CDB_OB_ARCHIVELOG_PIECE_FILES
          • oceanbase.DBA_OB_TABLE_STAT_STALE_INFO
          • DBA_INDEX_USAGE
          • oceanbase.DBA_OB_CLUSTER_EVENT_HISTORY
          • oceanbase.DBA_OB_RESOURCE_POOLS
          • oceanbase.CDB_OB_LS_ARB_REPLICA_TASKS
          • oceanbase.DBA_OB_TABLEGROUP_PARTITIONS
          • oceanbase.CDB_TABLES
          • oceanbase.DBA_IND_PARTITIONS
          • oceanbase.CDB_OB_TABLET_REPLICAS
          • mysql.help_category
          • oceanbase.DBA_DB_LINKS
          • oceanbase.CDB_OB_COLUMN_CHECKSUM_ERROR_INFO
          • information_schema.CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS
          • oceanbase.DBA_OB_TASK_OPT_STAT_GATHER_HISTORY
          • oceanbase.CDB_WR_SYS_TIME_MODEL
          • oceanbase.DBA_OB_IMPORT_TABLE_JOB_HISTORY
          • oceanbase.DBA_WR_ACTIVE_SESSION_HISTORY
          • oceanbase.CDB_OB_BACKUP_JOBS
          • oceanbase.CDB_PART_KEY_COLUMNS
          • oceanbase.DBA_OB_IMPORT_TABLE_TASK_HISTORY
          • oceanbase.CDB_OB_TRANSFER_TASK_HISTORY
          • oceanbase.DBA_OB_EXTERNAL_TABLE_FILES
          • oceanbase.DBA_OB_BALANCE_TASK_HISTORY
          • oceanbase.CDB_OB_TABLET_TO_LS
          • mysql.time_zone_transition
          • DBA_OB_AUX_STATISTICS
          • CDB_OB_AUX_STATISTICS
          • information_schema.CHECK_CONSTRAINTS
          • oceanbase.CDB_OB_BACKUP_DELETE_POLICY
          • oceanbase.DBA_PART_TABLES
          • oceanbase.DBA_OB_AUTO_INCREMENT
          • oceanbase.DBA_OB_SERVERS
          • oceanbase.CDB_OB_DEADLOCK_EVENT_HISTORY
          • oceanbase.DBA_OB_DATABASE_PRIVILEGE
          • oceanbase.DBA_OB_TABLEGROUPS
          • oceanbase.DBA_OB_RESTORE_PROGRESS
          • oceanbase.DBA_PART_INDEXES
          • oceanbase.DBA_OB_KV_TTL_TASK_HISTORY
          • oceanbase.DBA_OB_LS_ARB_REPLICA_TASKS
          • oceanbase.CDB_OB_DATABASES
          • CDB_MVIEWS
          • mysql.db
          • oceanbase.CDB_OB_ARCHIVE_DEST
          • oceanbase.CDB_OB_TABLEGROUP_TABLES
          • oceanbase.CDB_OB_IMPORT_TABLE_TASKS
          • oceanbase.DBA_PART_COL_STATISTICS
          • DBA_OB_CLONE_HISTORY
          • oceanbase.DBA_TAB_COL_STATISTICS
          • mysql.user
          • CDB_MVREF_STMT_STATS
          • oceanbase.DBA_WR_SYSTEM_EVENT
          • information_schema.SCHEMA_PRIVILEGES
          • CDB_MVREF_STATS_SYS_DEFAULTS
          • oceanbase.DBA_OB_DEADLOCK_EVENT_HISTORY
          • oceanbase.DBA_WR_CONTROL
          • oceanbase.DBA_OB_LS
          • information_schema.TABLES
          • oceanbase.CDB_OB_USERS
          • information_schema.ENGINES
          • oceanbase.DBA_OB_BALANCE_JOB_HISTORY
          • oceanbase.DBA_OB_ACCESS_POINT
          • oceanbase.DBA_SCHEDULER_WINDOWS
          • oceanbase.CDB_OB_BALANCE_TASKS
          • oceanbase.CDB_OB_DATABASE_PRIVILEGE
          • oceanbase.CDB_OB_BALANCE_TASK_HISTORY
          • oceanbase.DBA_OBJECTS
          • information_schema.SESSION_VARIABLES
          • DBA_MVREF_CHANGE_STATS
          • information_schema.COLUMNS
          • oceanbase.CDB_OB_LS_ARB_REPLICA_TASK_HISTORY
          • oceanbase.DBA_OB_LS_LOG_ARCHIVE_PROGRESS
          • oceanbase.CDB_OB_BACKUP_DELETE_TASK_HISTORY
          • oceanbase.CDB_OB_LS_LOCATIONS
          • oceanbase.CDB_WR_ACTIVE_SESSION_HISTORY
          • oceanbase.CDB_OB_TENANT_EVENT_HISTORY
          • oceanbase.DBA_SUBPARTITION_TEMPLATES
          • oceanbase.CDB_IND_PARTITIONS
          • information_schema.TABLE_PRIVILEGES
          • oceanbase.CDB_OB_BACKUP_STORAGE_INFO_HISTORY
          • oceanbase.DBA_TAB_STATISTICS
          • mysql.help_topic
          • oceanbase.DBA_OB_TABLEGROUP_SUBPARTITIONS
          • oceanbase.DBA_OB_TRANSFER_TASK_HISTORY
          • information_schema.CHARACTER_SETS
          • oceanbase.CDB_OB_BACKUP_TASK_HISTORY
          • oceanbase.DBA_TAB_STATS_HISTORY
          • oceanbase.DBA_OB_TRANSFER_TASKS
          • mysql.help_relation
          • mysql.help_keyword
          • oceanbase.CDB_OB_TABLEGROUP_PARTITIONS
          • oceanbase.DBA_IND_SUBPARTITIONS
          • oceanbase.CDB_OB_AUTO_INCREMENT
          • oceanbase.CDB_OB_BALANCE_JOB_HISTORY
          • oceanbase.CDB_OB_BACKUP_JOB_HISTORY
          • oceanbase.DBA_TAB_MODIFICATIONS
          • information_schema.USER_PRIVILEGES
          • oceanbase.CDB_OB_SYS_VARIABLES
          • oceanbase.DBA_OB_ZONES
          • oceanbase.DBA_OB_SEQUENCE_OBJECTS
          • oceanbase.DBA_OB_TABLET_TO_LS
          • oceanbase.CDB_OB_ARCHIVELOG_SUMMARY
          • DBA_MVREF_STATS_PARAMS
          • DBA_MVIEW_LOGS
          • oceanbase.CDB_SUBPART_KEY_COLUMNS
          • information_schema.ROUTINES
          • oceanbase.CDB_OB_TABLEGROUPS
          • oceanbase.DBA_SUBPART_HISTOGRAMS
          • information_schema.QUERY_RESPONSE_TIME
          • oceanbase.DBA_OB_UNITS
          • oceanbase.DBA_OB_RSRC_IO_DIRECTIVES
          • oceanbase.DBA_SQL_PLAN_BASELINES
          • oceanbase.DBA_TAB_HISTOGRAMS
          • oceanbase.DBA_WR_SQLSTAT
          • oceanbase.DBA_TAB_PARTITIONS
          • CDB_MVREF_STATS
          • oceanbase.DBA_OB_IMPORT_TABLE_TASKS
          • oceanbase.DBA_OB_RECOVER_TABLE_JOBS
          • oceanbase.DBA_OB_UNIT_JOBS
          • oceanbase.CDB_OB_ARCHIVELOG
          • oceanbase.CDB_OB_RESTORE_PROGRESS
          • oceanbase.DBA_OB_ARBITRATION_SERVICE
          • information_schema.SCHEMATA
          • oceanbase.CDB_OB_LS_LOG_ARCHIVE_PROGRESS
          • oceanbase.CDB_OB_ZONE_MAJOR_COMPACTION
          • oceanbase.DBA_OB_DATA_DICTIONARY_IN_LOG
          • oceanbase.CDB_OB_FREEZE_INFO
          • oceanbase.CDB_OB_BACKUP_STORAGE_INFO
          • oceanbase.DBA_OB_BACKUP_DELETE_TASK_HISTORY
          • information_schema.VIEWS
          • CDB_MVREF_CHANGE_STATS
          • oceanbase.DBA_OB_BACKUP_DELETE_TASKS
          • oceanbase.CDB_WR_EVENT_NAME
          • oceanbase.CDB_OB_BACKUP_SET_FILES
          • oceanbase.CDB_OB_TRANSFER_TASKS
          • oceanbase.DBA_OB_BACKUP_TASKS
          • oceanbase.CDB_TAB_PARTITIONS
          • oceanbase.DBA_SQL_MANAGEMENT_CONFIG
          • oceanbase.DBA_OB_ARCHIVELOG
          • oceanbase.CDB_INDEXES
          • oceanbase.CDB_WR_SYSSTAT
          • information_schema.COLLATIONS
          • oceanbase.DBA_OB_BACKUP_STORAGE_INFO
          • oceanbase.CDB_OB_TRANSFER_PARTITION_TASK_HISTORY
          • oceanbase.DBA_WR_SYS_TIME_MODEL
          • oceanbase.DBA_OB_BACKUP_DELETE_JOBS
          • oceanbase.DBA_OB_BACKUP_DELETE_POLICY
          • information_schema.REFERENTIAL_CONSTRAINTS
          • mysql.time_zone_transition_type
          • oceanbase.CDB_OB_IMPORT_TABLE_JOB_HISTORY
          • oceanbase.CDB_PART_TABLES
          • information_schema.KEY_COLUMN_USAGE
          • CDB_MVREF_RUN_STATS
          • oceanbase.DBA_PART_KEY_COLUMNS
          • DBA_MVIEWS
          • mysql.time_zone
          • oceanbase.DBA_OB_TABLET_REPLICAS
          • information_schema.PARAMETERS
          • DBA_MVREF_STATS
          • oceanbase.CDB_TAB_COLS
          • oceanbase.CDB_IND_COLUMNS
          • oceanbase.DBA_OB_TABLE_LOCATIONS
          • oceanbase.CDB_OB_LOG_RESTORE_SOURCE
          • oceanbase.DBA_OB_TENANT_JOBS
          • oceanbase.DBA_OB_BACKUP_JOBS
          • oceanbase.DBA_OB_BACKUP_TASK_HISTORY
          • information_schema.COLUMN_PRIVILEGES
          • oceanbase.CDB_SUBPARTITION_TEMPLATES
          • oceanbase.DBA_OB_UNIT_CONFIGS
          • oceanbase.CDB_TAB_SUBPARTITIONS
          • oceanbase.CDB_IND_SUBPARTITIONS
          • oceanbase.CDB_OB_RECOVER_TABLE_JOB_HISTORY
          • oceanbase.DBA_OB_BALANCE_JOBS
          • CDB_MVIEW_LOGS
          • information_schema.SESSION_STATUS
          • oceanbase.DBA_OB_IMPORT_TABLE_JOBS
          • oceanbase.DBA_OB_OUTLINES
          • oceanbase.DBA_WR_SYSSTAT
          • CDB_INDEX_USAGE
          • oceanbase.DBA_OB_TRANSFER_PARTITION_TASKS
          • oceanbase.DBA_OB_ARCHIVE_DEST
          • oceanbase.CDB_OB_KV_TTL_TASK_HISTORY
          • oceanbase.DBA_RSRC_PLANS
          • oceanbase.DBA_OB_MAJOR_COMPACTION
          • oceanbase.DBA_OB_RECOVER_TABLE_JOB_HISTORY
          • oceanbase.CDB_OB_TABLEGROUP_SUBPARTITIONS
          • information_schema.STATISTICS
          • oceanbase.CDB_OBJECTS
          • oceanbase.CDB_OB_IMPORT_TABLE_JOBS
          • oceanbase.DBA_OB_BACKUP_SET_FILES
          • oceanbase.DBA_OB_TABLE_OPT_STAT_GATHER_HISTORY
          • oceanbase.DBA_IND_STATISTICS
          • oceanbase.CDB_OB_DATA_DICTIONARY_IN_LOG
          • oceanbase.CDB_WR_SYSTEM_EVENT
          • DBA_OB_TRUSTED_ROOT_CERTIFICATE
          • oceanbase.CDB_OB_LS_HISTORY
          • oceanbase.CDB_PART_INDEXES
          • oceanbase.CDB_OB_LS_REPLICA_TASKS
          • oceanbase.CDB_OB_ACCESS_POINT
          • oceanbase.DBA_WR_EVENT_NAME
          • information_schema.GLOBAL_VARIABLES
          • oceanbase.CDB_OB_BACKUP_DELETE_TASKS
          • oceanbase.DBA_OB_LS_ARB_REPLICA_TASK_HISTORY
          • information_schema.PROCESSLIST
          • oceanbase.DBA_OB_ARCHIVELOG_PIECE_FILES
          • oceanbase.CDB_OB_EXTERNAL_TABLE_FILES
          • information_schema.TABLE_CONSTRAINTS
          • mysql.proc
          • oceanbase.DBA_OB_DATABASES
          • oceanbase.DBA_SCHEDULER_JOBS
          • oceanbase.DBA_OB_BACKUP_JOB_HISTORY
          • oceanbase.CDB_OB_BACKUP_TASKS
          • oceanbase.DBA_TAB_SUBPARTITIONS
          • oceanbase.CDB_TAB_COL_STATISTICS
          • oceanbase.CDB_WR_SNAPSHOT
          • oceanbase.DBA_OB_BACKUP_STORAGE_INFO_HISTORY
          • oceanbase.DBA_OB_BACKUP_PARAMETER
          • oceanbase.DBA_OB_BACKUP_DELETE_JOB_HISTORY
          • oceanbase.DBA_OB_SERVER_EVENT_HISTORY
          • oceanbase.CDB_OB_BACKUP_DELETE_JOB_HISTORY
          • oceanbase.CDB_OB_MAJOR_COMPACTION
          • oceanbase.DBA_OB_LS_HISTORY
          • oceanbase.ALL_OB_EXTERNAL_TABLE_FILES
          • DBA_MVREF_RUN_STATS
          • information_schema.VIEW_TABLE_USAGE
          • oceanbase.CDB_WR_SQLSTAT
          • oceanbase.DBA_OB_LOG_RESTORE_SOURCE
          • oceanbase.DBA_OB_KV_TTL_TASKS
          • oceanbase.DBA_PART_HISTOGRAMS
          • information_schema.COLLATION_CHARACTER_SET_APPLICABILITY
          • oceanbase.CDB_WR_STATNAME
        • Performance views
          • GV$OB_LOCKS
          • GV$OB_UNITS
          • GV$ACTIVE_SESSION_HISTORY
          • GV$OB_PARAMETERS
          • GV$OB_COMPACTION_SUGGESTIONS
          • GV$OB_MEMORY
          • GV$OB_IO_BENCHMARK
          • V$OB_ENCRYPTED_TABLES
          • V$OB_RPC_OUTGOING
          • GV$OB_RPC_INCOMING
          • GV$OB_SYS_TIME_MODEL
          • GV$OB_SQL_AUDIT
          • V$OB_TENANT_MEMORY
          • V$SYSSTAT
          • GV$OB_COMPACTION_PROGRESS
          • GV$OB_PLAN_CACHE_STAT
          • V$OB_SQL_WORKAREA_MEMORY_INFO
          • V$SESSION_WAIT_HISTORY
          • V$OB_PLAN_CACHE_PLAN_STAT
          • V$OB_IO_BENCHMARK
          • V$OB_TABLET_COMPACTION_HISTORY
          • GV$LATCH
          • V$OB_SSTABLES
          • V$OB_IO_CALIBRATION_STATUS
          • GV$OB_TRANSACTION_PARTICIPANTS
          • GV$OB_PX_WORKER_STAT
          • V$OB_ARBITRATION_SERVICE_STATUS
          • V$OB_LOCKS
          • V$OB_TENANT_RUNTIME_INFO
          • GV$OB_LS_SNAPSHOTS
          • V$SESSTAT
          • V$OB_ARBITRATION_MEMBER_INFO
          • V$OB_PLAN_CACHE_PLAN_EXPLAIN
          • GV$OB_MEMSTORE_INFO
          • V$OB_TRANSACTION_PARTICIPANTS
          • GV$OB_PX_P2P_DATAHUB
          • GV$OB_PLAN_CACHE_PLAN_STAT
          • V$STATNAME
          • V$OB_SQL_PLAN
          • V$OB_PX_TARGET_MONITOR
          • GV$OB_KVCACHE
          • V$OB_RPC_INCOMING
          • V$OB_DTL_INTERM_RESULT_MONITOR
          • GV$OB_ACTIVE_SESSION_HISTORY
          • GV$OB_PX_TARGET_MONITOR
          • GV$OB_IO_CALIBRATION_STATUS
          • GV$OB_OPT_STAT_GATHER_MONITOR
          • GV$SESSION_EVENT
          • V$OB_SERVERS
          • V$OB_MERGE_INFO
          • GV$OB_ARBITRATION_MEMBER_INFO
          • GV$OB_PS_ITEM_INFO
          • GV$SQL_WORKAREA
          • GV$OB_MEMSTORE
          • GV$OB_SQL_WORKAREA_MEMORY_INFO
          • GV$OB_TENANT_RUNTIME_INFO
          • V$OB_SESS_TIME_MODEL
          • V$OB_SQLSTAT
          • V$LATCH
          • V$OB_PS_STAT
          • V$OB_PX_P2P_DATAHUB
          • V$OB_SESSION
          • V$SQL_WORKAREA_HISTOGRAM
          • V$OB_COMPACTION_SUGGESTIONS
          • GV$OB_COMPACTION_DIAGNOSE_INFO
          • GV$SQL_PLAN_MONITOR
          • GV$SQL_WORKAREA_HISTOGRAM
          • GV$OB_DTL_INTERM_RESULT_MONITOR
          • V$OB_PLAN_CACHE_STAT
          • GV$OB_PLAN_CACHE_PLAN_EXPLAIN
          • V$SQL_WORKAREA_ACTIVE
          • V$SESSION_WAIT
          • GV$OB_LOG_STAT
          • V$OB_TABLET_COMPACTION_PROGRESS
          • V$OB_SERVER_SCHEMA_INFO
          • V$OB_OPT_STAT_GATHER_MONITOR
          • V$OB_SYS_TIME_MODEL
          • V$OB_PARAMETERS
          • V$OB_COMPACTION_DIAGNOSE_INFO
          • GV$OB_SQL_PLAN
          • V$RSRC_PLAN
          • V$OB_LOG_STAT
          • V$OB_ARCHIVE_DEST_STATUS
          • GV$SESSTAT
          • GV$OB_SQLSTAT
          • GV$OB_TABLET_COMPACTION_HISTORY
          • V$EVENT_NAME
          • GV$OB_SSTABLES
          • GV$DML_STATS
          • V$SESSION_EVENT
          • GV$OB_PROCESSLIST
          • V$DML_STATS
          • GV$OB_TABLET_COMPACTION_PROGRESS
          • V$OB_LS_LOG_RESTORE_STATUS
          • GV$OB_THREAD
          • V$OB_ACTIVE_SESSION_HISTORY
          • GV$OB_RPC_OUTGOING
          • GV$SQL_WORKAREA_ACTIVE
          • V$OB_LS_SNAPSHOTS
          • V$OB_PS_ITEM_INFO
          • GV$OB_TENANT_MEMORY
          • GV$SYSTEM_EVENT
          • V$OB_COMPACTION_PROGRESS
          • V$OB_THREAD
          • GV$OB_SESSION
          • GV$OB_SERVER_SCHEMA_INFO
          • V$OB_UNITS
          • V$OB_LS_REPLICA_TASK_PLAN
          • GV$OB_SERVERS
          • GV$OB_FLT_TRACE_CONFIG
          • V$OB_KVCACHE
          • GV$SESSION_WAIT
          • V$OB_MEMSTORE_INFO
          • V$OB_TIMESTAMP_SERVICE
          • GV$OB_SESS_TIME_MODEL
          • V$SESSION_LONGOPS
          • GV$SESSION_WAIT_HISTORY
          • GV$OB_PS_STAT
          • V$ENCRYPTED_TABLESPACES
          • V$SYSTEM_EVENT
          • V$SQL_JOIN_FILTER
          • V$ACTIVE_SESSION_HISTORY
          • V$OB_MEMSTORE
          • V$SQL_MONITOR_STATNAME
          • GV$OB_ARBITRATION_SERVICE_STATUS
          • V$OB_PROCESSLIST
          • GV$OB_MERGE_INFO
          • V$OB_PX_WORKER_STAT
          • V$OB_MEMORY
          • GV$SYSSTAT
          • GV$SQL_JOIN_FILTER
          • GV$SESSION_LONGOPS
          • V$SQL_PLAN_MONITOR
          • V$OB_SQL_AUDIT
          • V$SQL_WORKAREA
      • MySQL tenant views
        • Dictionary views
          • oceanbase.DBA_TAB_STATS_HISTORY
          • DBA_INDEX_USAGE
          • oceanbase.DBA_OB_LS_HISTORY
          • DBA_MVREF_STMT_STATS
          • mysql.time_zone_name
          • information_schema.GLOBAL_STATUS
          • information_schema.PARAMETERS
          • oceanbase.DBA_OB_ZONE_MAJOR_COMPACTION
          • oceanbase.DBA_OB_TASK_OPT_STAT_GATHER_HISTORY
          • oceanbase.DBA_IND_SUBPARTITIONS
          • DBA_MVIEW_LOGS
          • mysql.user
          • oceanbase.DBA_OB_TABLEGROUP_SUBPARTITIONS
          • information_schema.VIEWS
          • oceanbase.DBA_OB_BACKUP_DELETE_TASKS
          • oceanbase.DBA_OB_BALANCE_JOB_HISTORY
          • information_schema.COLUMN_PRIVILEGES
          • oceanbase.DBA_OB_BACKUP_JOB_HISTORY
          • oceanbase.DBA_OB_TENANTS
          • oceanbase.DBA_DB_LINKS
          • oceanbase.DBA_OB_TRANSFER_TASKS
          • oceanbase.DBA_OB_LS_ARB_REPLICA_TASK_HISTORY
          • oceanbase.DBA_OB_ARCHIVELOG_SUMMARY
          • oceanbase.DBA_OB_LS
          • mysql.proc
          • oceanbase.DBA_OB_TABLEGROUPS
          • oceanbase.DBA_OB_LS_LOG_ARCHIVE_PROGRESS
          • mysql.db
          • oceanbase.DBA_RSRC_CONSUMER_GROUPS
          • oceanbase.DBA_OB_LOG_RESTORE_SOURCE
          • information_schema.PARTITIONS
          • oceanbase.DBA_OB_BACKUP_SET_FILES
          • oceanbase.DBA_WR_CONTROL
          • oceanbase.DBA_IND_PARTITIONS
          • oceanbase.DBA_OB_TRANSFER_PARTITION_TASK_HISTORY
          • oceanbase.DBA_PART_HISTOGRAMS
          • oceanbase.DBA_OB_LS_REPLICA_TASKS
          • oceanbase.DBA_OB_BALANCE_TASK_HISTORY
          • oceanbase.DBA_OB_EXTERNAL_TABLE_FILES
          • oceanbase.DBA_OB_TRANSFER_PARTITION_TASKS
          • information_schema.CHARACTER_SETS
          • DBA_MVREF_STATS_SYS_DEFAULTS
          • mysql.time_zone
          • information_schema.VIEW_TABLE_USAGE
          • oceanbase.DBA_OB_RECOVER_TABLE_JOB_HISTORY
          • oceanbase.DBA_WR_SYS_TIME_MODEL
          • oceanbase.DBA_OB_DATABASES
          • oceanbase.DBA_RSRC_PLAN_DIRECTIVES
          • information_schema.QUERY_RESPONSE_TIME
          • information_schema.ST_GEOMETRY_COLUMNS
          • oceanbase.DBA_OB_FREEZE_INFO
          • oceanbase.DBA_OB_BACKUP_JOBS
          • oceanbase.DBA_SCHEDULER_JOBS
          • information_schema.COLLATION_CHARACTER_SET_APPLICABILITY
          • oceanbase.DBA_OB_DEADLOCK_EVENT_HISTORY
          • oceanbase.DBA_OB_BACKUP_PARAMETER
          • oceanbase.DBA_OB_OUTLINES
          • oceanbase.DBA_OB_DATA_DICTIONARY_IN_LOG
          • DBA_MVREF_STATS
          • oceanbase.DBA_OB_KV_TTL_TASKS
          • mysql.time_zone_transition_type
          • information_schema.TABLE_CONSTRAINTS
          • oceanbase.DBA_OB_MAJOR_COMPACTION
          • oceanbase.DBA_SUBPART_HISTOGRAMS
          • oceanbase.DBA_TAB_PARTITIONS
          • oceanbase.DBA_OB_USER_DEFINED_RULES
          • information_schema.PROCESSLIST
          • information_schema.CHECK_CONSTRAINTS
          • oceanbase.DBA_OB_RECOVER_TABLE_JOBS
          • oceanbase.DBA_WR_EVENT_NAME
          • DBA_MVIEWS
          • oceanbase.DBA_OB_BACKUP_DELETE_TASK_HISTORY
          • oceanbase.DBA_SQL_MANAGEMENT_CONFIG
          • oceanbase.DBA_PART_COL_STATISTICS
          • oceanbase.DBA_SQL_PLAN_BASELINES
          • oceanbase.DBA_OB_IMPORT_TABLE_JOB_HISTORY
          • oceanbase.DBA_OB_ARCHIVELOG_PIECE_FILES
          • information_schema.ST_SPATIAL_REFERENCE_SYSTEMS
          • oceanbase.DBA_WR_ACTIVE_SESSION_HISTORY
          • oceanbase.DBA_SUBPART_COL_STATISTICS
          • oceanbase.DBA_OB_TABLE_OPT_STAT_GATHER_HISTORY
          • information_schema.STATISTICS
          • oceanbase.DBA_WR_STATNAME
          • oceanbase.DBA_WR_SNAPSHOT
          • DBA_MVREF_CHANGE_STATS
          • information_schema.ROUTINES
          • information_schema.GLOBAL_VARIABLES
          • oceanbase.DBA_OB_AUTO_INCREMENT
          • information_schema.TABLES
          • oceanbase.DBA_OB_BACKUP_TASK_HISTORY
          • information_schema.REFERENTIAL_CONSTRAINTS
          • oceanbase.DBA_OB_USERS
          • information_schema.COLUMNS
          • oceanbase.DBA_OB_BALANCE_TASKS
          • oceanbase.DBA_IND_STATISTICS
          • oceanbase.DBA_TAB_MODIFICATIONS
          • oceanbase.DBA_OB_BACKUP_DELETE_JOB_HISTORY
          • oceanbase.DBA_OB_ARCHIVE_DEST
          • oceanbase.DBA_OB_ARCHIVELOG
          • oceanbase.DBA_OB_BALANCE_JOBS
          • oceanbase.DBA_OB_TABLET_REPLICAS
          • oceanbase.DBA_OBJECTS
          • oceanbase.DBA_TAB_SUBPARTITIONS
          • oceanbase.DBA_SCHEDULER_WINDOWS
          • DBA_MVREF_STATS_PARAMS
          • oceanbase.DBA_OB_IMPORT_TABLE_TASKS
          • information_schema.COLLATIONS
          • oceanbase.DBA_SUBPART_KEY_COLUMNS
          • information_schema.ENGINES
          • oceanbase.DBA_OB_TENANT_EVENT_HISTORY
          • oceanbase.DBA_WR_SQLSTAT
          • oceanbase.DBA_OB_KV_TTL_TASK_HISTORY
          • DBA_OB_AUX_STATISTICS
          • oceanbase.DBA_SUBPARTITION_TEMPLATES
          • information_schema.KEY_COLUMN_USAGE
          • oceanbase.DBA_PART_KEY_COLUMNS
          • oceanbase.DBA_WR_SYSSTAT
          • information_schema.TABLE_PRIVILEGES
          • information_schema.USER_PRIVILEGES
          • oceanbase.DBA_OB_BACKUP_STORAGE_INFO_HISTORY
          • oceanbase.DBA_OB_TABLE_STAT_STALE_INFO
          • oceanbase.DBA_OB_TABLEGROUP_TABLES
          • oceanbase.DBA_OB_IMPORT_TABLE_TASK_HISTORY
          • oceanbase.DBA_SEQUENCES
          • oceanbase.DBA_OB_RESTORE_PROGRESS
          • oceanbase.DBA_OB_RESTORE_HISTORY
          • DBA_MVREF_RUN_STATS
          • oceanbase.DBA_RSRC_GROUP_MAPPINGS
          • information_schema.SESSION_VARIABLES
          • information_schema.SCHEMA_PRIVILEGES
          • mysql.help_category
          • oceanbase.DBA_TAB_HISTOGRAMS
          • oceanbase.DBA_RSRC_PLANS
          • information_schema.CONNECTION_CONTROL_FAILED_LOGIN_ATTEMPTS
          • oceanbase.DBA_PART_TABLES
          • oceanbase.DBA_OB_DATABASE_PRIVILEGE
          • oceanbase.DBA_OB_BACKUP_DELETE_JOBS
          • mysql.help_keyword
          • oceanbase.DBA_OB_TABLEGROUP_PARTITIONS
          • mysql.time_zone_transition
          • oceanbase.DBA_OB_TRANSFER_TASK_HISTORY
          • oceanbase.DBA_OB_LS_ARB_REPLICA_TASKS
          • mysql.help_topic
          • oceanbase.DBA_PART_INDEXES
          • information_schema.SESSION_STATUS
          • oceanbase.DBA_WR_SYSTEM_EVENT
          • oceanbase.DBA_TAB_STATISTICS
          • oceanbase.DBA_OB_LS_LOCATIONS
          • oceanbase.DBA_WR_SQLTEXT
          • oceanbase.DBA_OB_TABLET_TO_LS
          • oceanbase.DBA_OB_BACKUP_TASKS
          • oceanbase.DBA_TAB_COL_STATISTICS
          • information_schema.SCHEMATA
          • oceanbase.DBA_OB_OUTLINE_CONCURRENT_HISTORY
          • oceanbase.ALL_OB_EXTERNAL_TABLE_FILES
          • oceanbase.DBA_OB_RSRC_IO_DIRECTIVES
          • oceanbase.DBA_OB_SEQUENCE_OBJECTS
          • mysql.help_relation
          • oceanbase.DBA_OB_IMPORT_TABLE_JOBS
          • oceanbase.DBA_OB_CONCURRENT_LIMIT_SQL
          • oceanbase.DBA_OB_BACKUP_STORAGE_INFO
          • oceanbase.DBA_OB_BACKUP_DELETE_POLICY
          • oceanbase.DBA_OB_ACCESS_POINT
          • oceanbase.DBA_OB_TABLE_LOCATIONS
        • Performance views
          • V$SESSION_WAIT_HISTORY
          • GV$ACTIVE_SESSION_HISTORY
          • V$SESSION_EVENT
          • V$OB_MEMORY
          • V$OB_COMPACTION_PROGRESS
          • GV$OB_PX_WORKER_STAT
          • GV$OB_PLAN_CACHE_PLAN_STAT
          • V$OB_DTL_INTERM_RESULT_MONITOR
          • GV$SESSTAT
          • GV$OB_SESSION
          • V$OB_SQL_PLAN
          • GV$SQL_WORKAREA_ACTIVE
          • GV$OB_RPC_OUTGOING
          • V$SQL_JOIN_FILTER
          • GV$OB_PS_ITEM_INFO
          • V$OB_LOCKS
          • V$OB_PX_P2P_DATAHUB
          • V$OB_ARCHIVE_DEST_STATUS
          • V$OB_MERGE_INFO
          • V$OB_KVCACHE
          • V$OB_ENCRYPTED_TABLES
          • GV$SYSTEM_EVENT
          • GV$OB_COMPACTION_SUGGESTIONS
          • V$SESSION_LONGOPS
          • GV$SESSION_WAIT_HISTORY
          • GV$OB_LS_SNAPSHOTS
          • V$SQL_WORKAREA_HISTOGRAM
          • V$OB_TRANSACTION_PARTICIPANTS
          • V$SQL_WORKAREA_ACTIVE
          • GV$LATCH
          • V$RSRC_PLAN
          • V$SQL_MONITOR_STATNAME
          • V$OB_SESS_TIME_MODEL
          • GV$OB_PROCESSLIST
          • GV$OB_SQL_AUDIT
          • GV$OB_COMPACTION_PROGRESS
          • V$OB_PX_WORKER_STAT
          • GV$SQL_JOIN_FILTER
          • GV$OB_PLAN_CACHE_PLAN_EXPLAIN
          • V$OB_SQL_AUDIT
          • GV$OB_SERVER_SCHEMA_INFO
          • GV$SESSION_EVENT
          • GV$OB_SERVERS
          • GV$OB_PARAMETERS
          • V$OB_THREAD
          • V$OB_LS_REPLICA_TASK_PLAN
          • V$OB_PROCESSLIST
          • V$OB_PX_TARGET_MONITOR
          • GV$OB_FLT_TRACE_CONFIG
          • GV$OB_PX_TARGET_MONITOR
          • V$STATNAME
          • GV$OB_SQL_WORKAREA_MEMORY_INFO
          • GV$OB_MEMSTORE
          • V$SQL_PLAN_MONITOR
          • GV$SYSSTAT
          • GV$OB_PS_STAT
          • V$OB_SQL_WORKAREA_MEMORY_INFO
          • V$OB_MEMSTORE
          • GV$SESSION_WAIT
          • GV$OB_SESS_TIME_MODEL
          • V$OB_UNITS
          • V$OB_SYS_TIME_MODEL
          • V$OB_PLAN_CACHE_PLAN_EXPLAIN
          • V$OB_MEMSTORE_INFO
          • V$OB_ARBITRATION_SERVICE_STATUS
          • V$OB_TABLET_COMPACTION_PROGRESS
          • V$OB_SESSION
          • V$ENCRYPTED_TABLESPACES
          • V$OB_LOG_STAT
          • V$LATCH
          • V$OB_RPC_INCOMING
          • GV$OB_SQL_PLAN
          • V$OB_PARAMETERS
          • V$OB_RPC_OUTGOING
          • V$EVENT_NAME
          • GV$OB_ARBITRATION_SERVICE_STATUS
          • V$OB_COMPACTION_DIAGNOSE_INFO
          • V$SESSTAT
          • V$SQL_WORKAREA
          • V$OB_OPT_STAT_GATHER_MONITOR
          • GV$SQL_WORKAREA
          • GV$OB_LOG_STAT
          • GV$SQL_PLAN_MONITOR
          • GV$OB_SYS_TIME_MODEL
          • GV$SESSION_LONGOPS
          • V$OB_SERVERS
          • GV$OB_THREAD
          • GV$OB_COMPACTION_DIAGNOSE_INFO
          • GV$OB_MEMORY
          • V$OB_SERVER_SCHEMA_INFO
          • V$OB_TIMESTAMP_SERVICE
          • V$OB_TENANT_MEMORY
          • V$SESSION_WAIT
          • GV$OB_TABLET_COMPACTION_HISTORY
          • GV$SQL_WORKAREA_HISTOGRAM
          • V$DML_STATS
          • V$OB_ACTIVE_SESSION_HISTORY
          • V$OB_SQLSTAT
          • V$SYSTEM_EVENT
          • GV$OB_UNITS
          • GV$OB_SSTABLES
          • V$OB_PLAN_CACHE_PLAN_STAT
          • GV$OB_TENANT_MEMORY
          • GV$OB_TABLET_COMPACTION_PROGRESS
          • GV$OB_TRANSACTION_PARTICIPANTS
          • GV$OB_KVCACHE
          • V$OB_LS_SNAPSHOTS
          • V$SYSSTAT
          • V$OB_PLAN_CACHE_STAT
          • V$OB_TABLET_COMPACTION_HISTORY
          • V$OB_SSTABLES
          • V$OB_PS_STAT
          • GV$OB_ARBITRATION_MEMBER_INFO
          • GV$OB_PX_P2P_DATAHUB
          • GV$OB_PLAN_CACHE_STAT
          • GV$DML_STATS
          • GV$OB_SQLSTAT
          • GV$OB_MEMSTORE_INFO
          • GV$OB_OPT_STAT_GATHER_MONITOR
          • V$OB_ARBITRATION_MEMBER_INFO
          • V$OB_LS_LOG_RESTORE_STATUS
          • GV$OB_ACTIVE_SESSION_HISTORY
          • V$ACTIVE_SESSION_HISTORY
          • GV$OB_RPC_INCOMING
          • V$OB_PS_ITEM_INFO
          • GV$OB_LOCKS
          • GV$OB_MERGE_INFO
          • V$OB_COMPACTION_SUGGESTIONS
          • GV$OB_DTL_INTERM_RESULT_MONITOR
      • Oracle tenant views
        • Dictionary views
          • USER_COL_PRIVS
          • DBA_INDEXES
          • ALL_PART_INDEXES
          • USER_IND_PARTITIONS
          • DBA_OB_TABLE_OPT_STAT_GATHER_HISTORY
          • DBA_OB_TRANSFER_TASK_HISTORY
          • DBA_OB_BACKUP_DELETE_TASKS
          • DBA_OB_FREEZE_INFO
          • USER_TRIGGERS
          • ALL_SCHEDULER_JOB_ARGS
          • DBA_SYS_PRIVS
          • DBA_OB_TENANT_EVENT_HISTORY
          • ALL_DB_LINKS
          • USER_DB_LINKS
          • DBA_RSRC_PLANS
          • DBA_RSRC_CONSUMER_GROUPS
          • DBA_SCHEDULER_WINDOWS
          • DBA_CONTEXT
          • ALL_POLICY_CONTEXTS
          • DBA_OB_IMPORT_TABLE_TASKS
          • DBA_OB_RECOVER_TABLE_JOBS
          • USER_TAB_COMMENTS
          • USER_OBJECTS
          • DBA_METHOD_PARAMS
          • DBA_OB_TABLET_REPLICAS
          • DBA_OBJ_AUDIT_OPTS
          • ALL_PART_TABLES
          • DBA_MVREF_STATS
          • USER_PROCEDURES
          • ALL_TYPE_METHODS
          • ALL_CONS_COLUMNS
          • NLS_SESSION_PARAMETERS
          • ALL_SUBPART_COL_STATISTICS
          • ALL_METHOD_PARAMS
          • DBA_TABLESPACES
          • DBA_PART_TABLES
          • USER_SEC_RELEVANT_COLS
          • USER_TABLES
          • ROLE_SYS_PRIVS
          • ALL_TRIGGER_ORDERING
          • USER_RECYCLEBIN
          • USER_AUDIT_TRAIL
          • ALL_SUBPART_HISTOGRAMS
          • USER_POLICY_CONTEXTS
          • USER_ERRORS
          • DBA_RSRC_PLAN_DIRECTIVES
          • DBA_TYPE_METHODS
          • DBA_OB_DATA_DICTIONARY_IN_LOG
          • USER_TAB_MODIFICATIONS
          • DBA_OB_TABLE_LOCATIONS
          • USER_MVIEWS
          • DBA_OB_CONCURRENT_LIMIT_SQL
          • DBA_USERS
          • ALL_CONSTRAINTS
          • USER_POLICY_GROUPS
          • DBA_IND_STATISTICS
          • USER_MVIEW_LOGS
          • DBA_OB_EXTERNAL_TABLE_FILES
          • DBA_SCHEDULER_PROGRAM
          • DBA_PART_INDEXES
          • DBA_TYPES
          • DBA_SQL_MANAGEMENT_CONFIG
          • DBA_OB_BACKUP_DELETE_TASK_HISTORY
          • DBA_OB_LOG_RESTORE_SOURCE
          • DBA_SUBPARTITION_TEMPLATES
          • DBA_TYPE_ATTRS
          • USER_TAB_STATS_HISTORY
          • USER_COL_COMMENTS
          • USER_TAB_PARTITIONS
          • DBA_MVREF_CHANGE_STATS
          • ALL_PART_COL_STATISTICS
          • USER_TYPE_METHODS
          • DBA_OB_LS_REPLICA_TASKS
          • DBA_DB_LINKS
          • DBA_OB_TRANSFER_PARTITION_TASK_HISTORY
          • DBA_OB_MAJOR_COMPACTION
          • USER_DEPENDENCIES
          • STMT_AUDIT_OPTION_MAP
          • ALL_TAB_COLS
          • DBA_OB_BALANCE_TASKS
          • DBA_IND_SUBPARTITIONS
          • ALL_ALL_TABLES
          • DBA_POLICIES
          • USER_SCHEDULER_JOB_ARGS
          • DBA_OB_ACCESS_POINT
          • DBA_AUDIT_STATEMENT
          • DBA_IND_EXPRESSIONS
          • DBA_AUDIT_SESSION
          • DBA_IND_PARTITIONS
          • DBA_OB_BACKUP_DELETE_JOBS
          • ALL_TAB_HISTOGRAMS
          • DBA_PART_KEY_COLUMNS
          • DBA_OB_ARCHIVELOG_PIECE_FILES
          • USER_AUDIT_OBJECT
          • DBA_OB_IMPORT_TABLE_TASK_HISTORY
          • ALL_POLICY_GROUPS
          • USER_SYNONYMS
          • ALL_OB_EXTERNAL_TABLE_FILES
          • DBA_WR_SYSSTAT
          • DBA_AUDIT_TRAIL
          • DBA_OB_ARCHIVE_DEST
          • ALL_POLICIES
          • DBA_OB_BACKUP_DELETE_JOB_HISTORY
          • ALL_TRIGGERS
          • DBA_SUBPART_KEY_COLUMNS
          • ALL_PROCEDURES
          • DBA_OB_OUTLINES
          • DBA_SUBPART_COL_STATISTICS
          • DBA_MVREF_STMT_STATS
          • DBA_TRIGGERS
          • DBA_SQL_PLAN_BASELINES
          • DBA_OB_OUTLINE_CONCURRENT_HISTORY
          • DBA_SCHEDULER_PROGRAM_ARGS
          • DBA_ROLES
          • USER_SEQUENCES
          • ALL_IND_COLUMNS
          • DICT
          • USER_SYS_PRIVS
          • USER_INDEXES
          • DBA_OB_TABLEGROUP_TABLES
          • ALL_TYPES
          • DBA_OB_TASK_OPT_STAT_GATHER_HISTORY
          • DBA_OB_LS_LOG_ARCHIVE_PROGRESS
          • USER_PART_HISTOGRAMS
          • USER_ROLE_PRIVS
          • DBA_AUDIT_EXISTS
          • DBA_TAB_COLUMNS
          • TENANT_VIRTUAL_SESSION_VARIABLE
          • DBA_OB_LS_ARB_REPLICA_TASK_HISTORY
          • USER_PART_COL_STATISTICS
          • DBA_MVREF_STATS_PARAMS
          • DBA_STMT_AUDIT_OPTS
          • ALL_TYPE_ATTRS
          • DBA_OB_DEADLOCK_EVENT_HISTORY
          • DBA_OB_RSRC_IO_DIRECTIVES
          • DBA_DEPENDENCIES
          • DBA_CONS_COLUMNS
          • USER_SUBPART_KEY_COLUMNS
          • DBA_TAB_MODIFICATIONS
          • DBA_POLICY_CONTEXTS
          • DBA_OB_BACKUP_TASK_HISTORY
          • DBA_OB_BACKUP_STORAGE_INFO_HISTORY
          • USER_SUBPART_COL_STATISTICS
          • USER_AUDIT_STATEMENT
          • USER_MVREF_STATS_PARAMS
          • DBA_RSRC_GROUP_MAPPINGS
          • DBA_VIEWS
          • ALL_OBJECTS
          • ALL_PART_HISTOGRAMS
          • ROLE_TAB_PRIVS
          • DBA_SEQUENCES
          • USER_TAB_COL_STATISTICS
          • USER_SOURCE
          • ALL_PART_KEY_COLUMNS
          • DBA_OB_BACKUP_TASKS
          • USER_TRIGGER_ORDERING
          • ALL_IND_SUBPARTITIONS
          • DBA_TAB_COL_STATISTICS
          • DBA_SUBPART_HISTOGRAMS
          • DBA_WR_ACTIVE_SESSION_HISTORY
          • DBA_OB_USER_DEFINED_RULES
          • DBA_TAB_PRIVS
          • USER_TYPES
          • USER_TAB_SUBPARTITIONS
          • ALL_MVIEWS
          • ALL_IND_PARTITIONS
          • ALL_TAB_PRIVS
          • ALL_TAB_COL_STATISTICS
          • ALL_MVIEW_LOGS
          • DBA_CONSTRAINTS
          • DBA_WR_SYS_TIME_MODEL
          • DBA_COLL_TYPES
          • DBA_TAB_STATS_HISTORY
          • ALL_SOURCE
          • USER_TYPE_ATTRS
          • ALL_TAB_SUBPARTITIONS
          • DBA_MVIEW_LOGS
          • DBA_OB_ARCHIVELOG_SUMMARY
          • USER_SUBPART_HISTOGRAMS
          • ALL_SCHEDULER_PROGRAM_ARGS
          • DBA_JOBS_RUNNING
          • USER_MVREF_STATS_SYS_DEFAULTS
          • USER_IND_COLUMNS
          • DBA_SYNONYMS
          • DBA_TAB_STATISTICS
          • ALL_TAB_MODIFICATIONS
          • DBA_TAB_COMMENTS
          • ALL_TAB_COMMENTS
          • DBA_TAB_SUBPARTITIONS
          • ROLE_ROLE_PRIVS
          • USER_TAB_COLUMNS
          • DBA_WR_SNAPSHOT
          • USER_TAB_STATISTICS
          • DBA_OB_BALANCE_JOBS
          • ALL_TAB_STATS_HISTORY
          • DBA_OB_TABLEGROUP_SUBPARTITIONS
          • USER_JOBS
          • DBA_OB_DATABASES
          • DBA_TAB_HISTOGRAMS
          • DBA_OB_TABLEGROUPS
          • USER_MVREF_STMT_STATS
          • DBA_OB_TABLET_TO_LS
          • DBA_RECYCLEBIN
          • ALL_INDEXES
          • USER_TAB_COLS
          • USER_TAB_HISTOGRAMS
          • DBA_PROCEDURES
          • USER_PART_KEY_COLUMNS
          • DBA_OBJECTS
          • DBA_WR_STATNAME
          • DBA_OB_BACKUP_STORAGE_INFO
          • DBA_PROFILES
          • DBA_OB_BALANCE_TASK_HISTORY
          • DBA_ALL_TABLES
          • ALL_DIRECTORIES
          • DBA_IND_COLUMNS
          • DBA_ARGUMENTS
          • DBA_OB_RESTORE_HISTORY
          • USER_USERS
          • ALL_SUBPARTITION_TEMPLATES
          • DICTIONARY
          • DBA_PART_COL_STATISTICS
          • DBA_OB_LS_HISTORY
          • ALL_TAB_COLUMNS
          • ALL_COL_PRIVS
          • DBA_ROLE_PRIVS
          • DBA_MVREF_RUN_STATS
          • DBA_OB_ZONE_MAJOR_COMPACTION
          • USER_SEGMENTS
          • USER_POLICIES
          • USER_CONSTRAINTS
          • DBA_OB_BALANCE_JOB_HISTORY
          • DBA_OB_BACKUP_DELETE_POLICY
          • DBA_OB_RECOVER_TABLE_JOB_HISTORY
          • DBA_MVIEWS
          • ALL_DEPENDENCIES
          • USER_PROFILES
          • DBA_OB_IMPORT_TABLE_JOBS
          • DBA_SEC_RELEVANT_COLS
          • DBMS_LOCK_ALLOCATED
          • USER_MVREF_RUN_STATS
          • DBA_INDEX_USAGE
          • DBA_TAB_COLS
          • ALL_COLL_TYPES
          • DBA_AUDIT_OBJECT
          • ALL_USERS
          • USER_AUDIT_SESSION
          • DBA_OB_AUX_STATISTICS
          • DBA_WR_SQLTEXT
          • ALL_PROFILES
          • ALL_SEC_RELEVANT_COLS
          • DBA_OB_IMPORT_TABLE_JOB_HISTORY
          • USER_IND_EXPRESSIONS
          • ALL_TAB_PARTITIONS
          • DBA_OB_LS_LOCATIONS
          • DBA_ERRORS
          • USER_PART_TABLES
          • DBA_OB_LS
          • USER_IND_SUBPARTITIONS
          • DBA_TAB_PARTITIONS
          • DBA_WR_SYSTEM_EVENT
          • DBA_WR_CONTROL
          • DBA_OB_TRANSFER_TASKS
          • DBA_OB_TRANSFER_PARTITION_TASKS
          • DBA_WR_EVENT_NAME
          • USER_TABLESPACES
          • USER_ALL_TABLES
          • AUDIT_ACTIONS
          • DBA_SEGMENTS
          • USER_TAB_PRIVS
          • ALL_SCHEDULER_WINDOWS
          • ALL_IND_EXPRESSIONS
          • DBA_OB_TABLEGROUP_PARTITIONS
          • ALL_SEQUENCES
          • DBA_PART_HISTOGRAMS
          • NLS_DATABASE_PARAMETERS
          • DBA_OB_ARCHIVELOG
          • USER_VIEWS
          • USER_IND_STATISTICS
          • ALL_TAB_STATISTICS
          • USER_ARGUMENTS
          • DBA_COL_COMMENTS
          • ALL_SYNONYMS
          • DBA_SOURCE
          • DBA_OB_BACKUP_JOBS
          • USER_MVREF_CHANGE_STATS
          • DBA_OB_TABLE_STAT_STALE_INFO
          • USER_CONS_COLUMNS
          • DBA_OB_LS_ARB_REPLICA_TASKS
          • DBA_OB_BACKUP_PARAMETER
          • DBA_TABLES
          • ALL_DEF_AUDIT_OPTS
          • DBA_SCHEDULER_JOB_RUN_DETAILS
          • TENANT_VIRTUAL_GLOBAL_VARIABLE
          • DBA_MVREF_STATS_SYS_DEFAULTS
          • ALL_ERRORS
          • DBA_OB_TENANTS
          • DBA_OB_DATABASE_PRIVILEGE
          • DBA_SCHEDULER_JOB_ARGS
          • DBA_WR_SQLSTAT
          • ALL_VIEWS
          • DBA_TRIGGER_ORDERING
          • USER_COLL_TYPES
          • ALL_SUBPART_KEY_COLUMNS
          • NLS_INSTANCE_PARAMETERS
          • ALL_IND_STATISTICS
          • ALL_TABLES
          • DBA_OB_BACKUP_JOB_HISTORY
          • DBA_SCHEDULER_JOBS
          • USER_SCHEDULER_PROGRAM_ARGS
          • DBA_JOBS
          • ALL_ARGUMENTS
          • DBA_OB_RESTORE_PROGRESS
          • USER_MVREF_STATS
          • ALL_COL_COMMENTS
          • USER_PART_INDEXES
          • DBA_DIRECTORIES
          • DBA_OB_BACKUP_SET_FILES
          • DBA_POLICY_GROUPS
          • USER_SUBPARTITION_TEMPLATES
          • DBA_COL_PRIVS
        • Performance views
          • GV$SESSION_WAIT_HISTORY
          • V$DBLINK
          • GV$OB_SYS_TIME_MODEL
          • GV$OB_PX_P2P_DATAHUB
          • GV$SQL_JOIN_FILTER
          • GV$OB_UNITS
          • V$OB_LS_REPLICA_TASK_PLAN
          • GV$OB_SESSION
          • GV$OB_MEMORY
          • V$ENCRYPTED_TABLESPACES
          • V$OPEN_CURSOR
          • GV$OB_THREAD
          • GV$SYSSTAT
          • GV$OB_SSTABLES
          • GV$OB_ACTIVE_SESSION_HISTORY
          • V$OB_PARAMETERS
          • V$SYSTEM_EVENT
          • V$OB_TENANT_MEMORY
          • GV$SESSION_WAIT
          • V$OB_TABLET_COMPACTION_PROGRESS
          • GV$OB_TENANT_MEMORY
          • GV$OB_SESS_TIME_MODEL
          • V$OB_SQL_AUDIT
          • GV$OB_LOCKS
          • GV$OB_TABLET_COMPACTION_PROGRESS
          • V$SQL_PLAN_MONITOR
          • V$OB_ACTIVE_SESSION_HISTORY
          • GV$OB_FLT_TRACE_CONFIG
          • GV$OPEN_CURSOR
          • V$OB_MEMSTORE_INFO
          • GV$OB_LS_SNAPSHOTS
          • GV$OB_SERVER_SCHEMA_INFO
          • GV$OB_COMPACTION_PROGRESS
          • V$OB_PLAN_CACHE_PLAN_STAT
          • V$OB_PX_WORKER_STAT
          • V$OB_LOCKS
          • GV$DBLINK
          • V$SYSSTAT
          • V$OB_COMPACTION_DIAGNOSE_INFO
          • V$OB_MEMORY
          • GV$OB_KVCACHE
          • GV$OB_MEMSTORE_INFO
          • V$OB_TRANSACTION_PARTICIPANTS
          • V$OB_SERVER_SCHEMA_INFO
          • GV$SESSTAT
          • GV$OB_GLOBAL_TRANSACTION
          • V$OB_PX_TARGET_MONITOR
          • GV$DML_STATS
          • GV$SQL_WORKAREA_HISTOGRAM
          • GV$SQL_PLAN_MONITOR
          • V$OB_SESSION
          • V$OB_PROCESSLIST
          • V$OB_COMPACTION_PROGRESS
          • V$SESSION_WAIT_HISTORY
          • V$OB_SYS_TIME_MODEL
          • GV$OB_SQL_PLAN
          • V$OB_SSTABLES
          • GV$OB_COMPACTION_DIAGNOSE_INFO
          • GV$ACTIVE_SESSION_HISTORY
          • V$SQL_WORKAREA_HISTOGRAM
          • GV$OB_PARAMETERS
          • GV$GLOBAL_TRANSACTION
          • V$VERSION
          • V$OB_LOG_STAT
          • V$OB_SQLSTAT
          • GV$SQL_WORKAREA
          • GV$OB_PROCESSLIST
          • GV$OB_PX_WORKER_STAT
          • GV$OB_TABLET_COMPACTION_HISTORY
          • V$OB_PS_ITEM_INFO
          • V$OB_TABLET_COMPACTION_HISTORY
          • GV$OB_PLAN_CACHE_PLAN_STAT
          • V$TIMEZONE_NAMES
          • V$OB_PLAN_CACHE_PLAN_EXPLAIN
          • V$OB_OPT_STAT_GATHER_MONITOR
          • GV$OB_LOG_STAT
          • GV$OB_SQL_WORKAREA_MEMORY_INFO
          • V$OB_SESS_TIME_MODEL
          • V$STATNAME
          • GV$SQL_WORKAREA_ACTIVE
          • V$OB_UNITS
          • GV$OB_PS_STAT
          • GV$INSTANCE
          • GV$OB_PS_ITEM_INFO
          • V$OB_COMPACTION_SUGGESTIONS
          • GV$OB_PLAN_CACHE_PLAN_EXPLAIN
          • GV$SYSTEM_EVENT
          • V$SESSTAT
          • V$SQL_MONITOR_STATNAME
          • V$NLS_PARAMETERS
          • V$OB_LS_LOG_RESTORE_STATUS
          • V$OB_TIMESTAMP_SERVICE
          • V$OB_SQL_WORKAREA_MEMORY_INFO
          • GV$OB_TRANSACTION_PARTICIPANTS
          • V$GLOBAL_TRANSACTION
          • V$OB_ARCHIVE_DEST_STATUS
          • V$OB_MEMSTORE
          • V$INSTANCE
          • GV$OB_OPT_STAT_GATHER_MONITOR
          • V$OB_DTL_INTERM_RESULT_MONITOR
          • V$SQL_WORKAREA_ACTIVE
          • V$OB_SQL_PLAN
          • V$SESSION_WAIT
          • V$OB_PX_P2P_DATAHUB
          • V$OB_ENCRYPTED_TABLES
          • V$RSRC_PLAN
          • GV$OB_ARBITRATION_MEMBER_INFO
          • GV$OB_SQLSTAT
          • GV$OB_ARBITRATION_SERVICE_STATUS
          • GV$OB_MEMSTORE
          • GV$OB_PLAN_CACHE_STAT
          • GV$OB_COMPACTION_SUGGESTIONS
          • V$OB_PS_STAT
          • V$EVENT_NAME
          • V$OB_THREAD
          • V$DML_STATS
          • GV$OB_PX_TARGET_MONITOR
          • V$GLOBALCONTEXT
          • GV$OB_DTL_INTERM_RESULT_MONITOR
          • V$OB_PLAN_CACHE_STAT
          • V$OB_KVCACHE
          • V$SQL_JOIN_FILTER
          • V$ACTIVE_SESSION_HISTORY
          • V$OB_ARBITRATION_SERVICE_STATUS
          • V$SQL_WORKAREA
          • V$OB_ARBITRATION_MEMBER_INFO
          • V$OB_GLOBAL_TRANSACTION
          • GV$OB_SQL_AUDIT
          • V$OB_LS_SNAPSHOTS
    • Platforms
      • OMA
      • OMS
      • OCP
      • ODC
      • OCP Express
        • OCP Express
        • View cluster overview information
        • Tenant management
        • Monitor a cluster
        • Diagnostic analysis
        • Log service
      • OAT
    • Parameters and system variables
      • Overview
      • System variables
        • Overview of system variables
        • Global variables
          • block_encryption_mode
          • character_set_connection
          • character_set_database
          • character_set_filesystem
          • character_set_results
          • character_set_server
          • collation_database
          • collation_server
          • datadir
          • debug_sync
          • default_password_lifetime
          • div_precision_increment
          • error_on_overlap_time
          • explicit_defaults_for_timestamp
          • group_concat_max_len
          • identity
          • init_connect
          • lower_case_table_names
          • max_sp_recursion_depth
          • max_user_connections
          • net_buffer_length
          • net_read_timeout
          • nls_calendar
          • nls_characterset
          • nls_comp
          • nls_currency
          • nls_date_format
          • nls_length_semantics
          • nls_sort
          • nls_territory
          • ob_create_table_strict_mode
          • ob_default_replica_num
          • ob_enable_blk_nestedloop_join
          • ob_early_lock_release
          • ob_enable_jit
          • ob_enable_sql_audit
          • ob_enable_transmission_checksum
          • ob_enable_truncate_flashback
          • ob_global_debug_sync
          • ob_pl_block_timeout
          • ob_plan_cache_evict_low_percentage
          • ob_query_timeout
          • ob_read_consistency
          • ob_reserved_meta_memory_percentage
          • ob_tcp_invited_nodes
          • ob_trx_timeout
          • optimizer_capture_sql_plan_baselines
          • optimizer_use_sql_plan_baselines
          • parallel_servers_target
          • performance_schema
          • query_cache_size
          • secure_file_priv
          • sql_auto_is_null
          • sql_quote_show_create
          • sql_safe_updates
          • sql_select_limit
          • sql_throttle_current_priority
          • sql_throttle_network
          • sql_throttle_priority
          • sql_throttle_rt
          • sql_warnings
          • transaction_read_only
          • tx_read_only
          • version
          • validate_password_mixed_case_count
          • validate_password_number_count
          • validate_password_policy
          • validate_password_special_char_count
          • ob_enable_rich_error_msg
          • event_scheduler
          • regexp_time_limit
          • log_row_value_options
          • parallel_degree_limit
          • optimizer_dynamic_sampling
          • runtime_filter_wait_time_ms
          • ob_default_lob_inrow_threshold
          • auto_increment_cache_size
          • auto_increment_increment
          • auto_increment_offset
          • autocommit
          • binlog_row_image
          • character_set_client
          • collation_connection
          • innodb_strict_mode
          • license
          • max_allowed_packet
          • max_connections
          • nls_date_language
          • nls_dual_currency
          • nls_nchar_conv_excp
          • nls_numeric_characters
          • nls_timestamp_format
          • nls_timestamp_tz_format
          • ob_bnl_join_cache_size
          • ob_compatibility_mode
          • ob_enable_hash_group_by
          • ob_enable_plan_cache
          • ob_enable_transformation
          • ob_log_level
          • ob_plan_cache_percentage
          • ob_proxy_global_variables_version
          • ob_timestamp_service
          • ob_trx_idle_timeout
          • parallel_max_servers
          • query_cache_type
          • resource_manager_plan
          • sql_mode
          • transaction_isolation
          • tx_isolation
          • validate_password_length
          • parallel_degree_policy
          • parallel_min_scan_time_threshold
          • runtime_filter_max_in_num
          • runtime_bloom_filter_max_size
          • character_set_system
          • connect_timeout
          • cursor_sharing
          • foreign_key_checks
          • interactive_timeout
          • net_write_timeout
          • nls_iso_currency
          • nls_nchar_characterset
          • ob_enable_aggregation_pushdown
          • ob_enable_index_direct_select
          • ob_plan_cache_evict_high_percentage
          • ob_route_policy
          • ob_sql_audit_percentage
          • ob_sql_work_area_percentage
          • ob_temp_tablespace_size_percentage
          • ob_trx_lock_timeout
          • plugin_dir
          • plsql_optimize_level
          • read_only
          • recyclebin
          • system_time_zone
          • time_zone
          • default_storage_engine
          • cte_max_recursion_depth
          • regexp_stack_limit
          • ob_max_read_stale_time
          • parallel_degree_policy
          • parallel_min_scan_time_threshold
          • runtime_filter_type
          • runtime_filter_max_in_num
          • runtime_bloom_filter_max_size
          • optimizer_features_enable
          • ob_enable_pl_cache
        • Session-level variables
          • runtime_bloom_filter_max_size
          • nls_language
          • last_insert_id
          • ob_org_cluster_id
          • ob_trace_info
          • is_result_accurate
          • runtime_filter_max_in_num
          • ob_max_read_stale_time
          • timestamp
          • parallel_min_scan_time_threshold
          • optimizer_dynamic_sampling
          • runtime_filter_type
          • ob_enable_show_trace
          • runtime_filter_wait_time_ms
          • ob_proxy_partition_hit
          • parallel_degree_policy
          • tracefile_identifier
          • ob_capability_flag
          • ob_proxy_set_trx_executed
          • parallel_degree_limit
          • ob_last_schema_version
      • Parameters
        • Overview
        • Cluster-level parameters
          • location_cache_priority
          • stack_size
          • tableapi_transport_compress_func
          • devname
          • cluster_id
          • disk_io_thread_count
          • enable_pg
          • minor_merge_concurrency
          • tablet_size
          • default_transport_compress_func
          • row_purge_thread_count
          • ofs_list
          • clog_transport_compress_func
          • location_fetch_concurrency
          • rpc_timeout
          • high_priority_net_thread_count
          • datafile_size
          • datafile_maxsize
          • get_leader_candidate_rpc_timeout
          • ob_esi_memory_limit
          • enable_manual_merge
          • global_index_build_single_replica_timeout
          • schema_history_expire_time
          • lease_time
          • schema_history_recycle_interval
          • weak_read_version_refresh_interval
          • location_cache_refresh_sql_timeout
          • backup_dest_option
          • cluster
          • opt_tab_stat_cache_priority
          • enable_auto_leader_switch
          • data_dir
          • storage_meta_cache_priority
          • balancer_timeout_check_interval
          • minor_deferred_gc_time
          • merger_completion_percentage
          • enable_upgrade_mode
          • backup_recovery_window
          • index_block_cache_priority
          • log_archive_checkpoint_interval
          • sql_login_thread_count
          • ob_esi_io_concurrency
          • clog_expire_days
          • user_block_cache_priority
          • trx_2pc_retry_interval
          • memory_chunk_cache_size
          • tcp_keepintvl
          • log_storage_warning_tolerance_time
          • backup_dest
          • server_balance_disk_tolerance_percent
          • backup_backup_dest
          • cpu_count
          • token_reserved_percentage
          • server_data_copy_out_concurrency
          • cpu_reserved
          • switchover_process_thread_count
          • trx_try_wait_lock_timeout
          • ob_ratelimit_stat_period
          • dtl_buffer_size
          • enable_sys_table_ddl
          • rootservice_list
          • dead_socket_detection_timeout
          • local_ip
          • tenant_groups
          • server_permanent_offline_time
          • memstore_limit_percentage
          • backup_zone
          • tablet_meta_table_check_interval
          • location_cache_refresh_min_interval
          • server_data_copy_in_concurrency
          • standby_fetch_log_bandwidth_limit
          • minor_warm_up_duration_time
          • election_blacklist_interval
          • net_thread_count
          • virtual_table_location_cache_expire_time
          • multiblock_read_gap_size
          • rpc_port
          • autoinc_cache_refresh_interval
          • replica_safe_remove_time
          • leak_mod_to_check
          • observer_id
          • ob_esi_session_timeout
          • enable_record_trace_id
          • sql_protocol_min_tls_version
          • log_archive_batch_buffer_limit
          • large_query_threshold
          • enable_ddl
          • enable_rootservice_standalone
          • tenant_cpu_variation_per_server
          • datafile_next
          • plan_cache_evict_interval
          • memory_limit
          • syslog_io_bandwidth_limit
          • system_cpu_quota
          • restore_concurrency
          • enable_ob_ratelimit
          • wait_leader_batch_count
          • sys_bkgd_io_low_percentage
          • diag_syslog_per_error_limit
          • zone_merge_concurrency
          • sys_bkgd_migration_change_member_list_timeout
          • auto_broadcast_location_cache_rate_limit
          • log_disk_percentage
          • mysql_port
          • enable_one_phase_commit
          • log_disk_size
          • tcp_keepcnt
          • ilog_index_expire_time
          • enable_rpc_authentication_bypass
          • enable_ob_esi_process
          • obconfig_url
          • enable_record_trace_log
          • ignore_replay_checksum_error
          • migrate_concurrency
          • tenant_task_queue_size
          • data_storage_warning_tolerance_time
          • merge_thread_count
          • zone_merge_order
          • global_major_freeze_residual_memory
          • enable_rich_error_msg
          • memory_reserved
          • balancer_log_interval
          • px_task_size
          • recyclebin_object_expire_time
          • enable_cgroup
          • min_observer_version
          • enable_sys_unit_standalone
          • workers_per_cpu_quota
          • resource_soft_limit
          • rootservice_ready_check_interval
          • debug_sync_timeout
          • partition_table_check_interval
          • plan_cache_high_watermark
          • index_clog_cache_priority
          • global_write_halt_residual_memory
          • enable_syslog_wf
          • enable_log_archive
          • clog_sync_time_warn_threshold
          • syslog_level
          • system_memory
          • enable_syslog_recycle<main id="notice" type='explain'>
          • clog_disk_usage_limit_percentage
          • enable_rereplication
          • ob_startup_mode
          • clog_cache_priority
          • migration_disable_time
          • enable_async_syslog
          • config_additional_dir
          • ob_event_history_recycle_interval
          • memory_limit_percentage
          • rpc_client_authentication_method
          • unit_balance_resource_weight
          • enable_global_freeze_trigger
          • backup_concurrency
          • rootservice_async_task_thread_count
          • index_info_block_cache_priority
          • max_px_worker_count
          • bf_cache_priority
          • tablet_meta_table_scan_batch_count
          • merger_warm_up_duration_time
          • sys_bkgd_net_percentage
          • balance_blacklist_failure_threshold
          • enable_sql_operator_dump
          • merge_stat_sampling_ratio
          • user_row_cache_priority
          • bf_cache_miss_count_threshold
          • auto_refresh_location_cache_rate_limit
          • enable_sql_audit
          • all_server_list
          • ls_meta_table_check_interval
          • resource_hard_limit
          • datafile_disk_percentage
          • server_check_interval
          • internal_sql_execute_timeout
          • data_storage_error_tolerance_time
          • auto_leader_switch_interval
          • election_cpu_quota
          • zone_merge_timeout
          • data_copy_concurrency
          • max_syslog_file_count
          • sql_audit_memory_limit
          • default_compress
          • enable_tcp_keepalive
          • use_large_pages
          • micro_block_merge_verify_level
          • cache_wash_threshold
          • tcp_keepidle
          • merger_switch_leader_duration_time
          • sys_bkgd_migration_retry_num
          • ssl_external_kms_info
          • enable_perf_event
          • max_string_print_length
          • flush_log_at_trx_commit
          • enable_merge_by_turn
          • enable_dblink
          • balancer_emergency_percentage
          • large_query_worker_percentage
          • location_cache_expire_time
          • ob_esi_syslog_level
          • ob_esi_rpc_port
          • default_compress_func
          • balance_blacklist_retry_interval
          • location_refresh_thread_count
          • server_balance_cpu_mem_tolerance_percent
          • location_cache_cpu_quota
          • builtin_db_data_verify_cycle
          • px_workers_per_cpu_quota
          • server_balance_critical_disk_waterlevel
          • enable_auto_refresh_location_cache
          • rootservice_memory_limit
          • index_cache_priority
          • plan_cache_low_watermark
          • minor_freeze_times
          • ssl_client_authentication
          • all_cluster_list
          • rpc_server_authentication_method
          • multiblock_read_size
          • ignore_replica_checksum_error
          • strict_check_os_params
          • location_cache_refresh_rpc_timeout
          • zone
          • clog_disk_utilization_threshold
          • enable_major_freeze
          • backup_log_archive_option
          • data_disk_usage_limit_percentage
          • user_iort_up_percentage
          • enable_election_group
          • sys_bkgd_io_high_percentage
          • rdma_io_thread_count
          • backup_backup_dest_option
          • user_tab_col_stat_cache_priority
          • ob_esi_max_syslog_file_count
          • server_cpu_quota_min
          • system_trace_level
          • trx_force_kill_threshold
          • backup_net_limit
          • fuse_row_cache_priority
          • max_kept_major_version_number
          • trace_log_slow_query_watermark
          • enable_separate_sys_clog
          • sys_cpu_limit_trigger
          • enable_smooth_leader_switch
          • balancer_tolerance_percentage
          • balancer_task_timeout
          • row_compaction_update_limit
          • rootservice_async_task_queue_size
          • enable_asan_for_memory_context
          • fast_recovery_concurrency
          • backup_region
          • sql_net_thread_count
          • gc_wait_archive
          • rebuild_replica_data_lag_threshold
          • server_cpu_quota_max
          • trace_log_sampling_interval
          • tablet_ls_cache_priority
          • default_row_format
        • Tenant-level parameters
          • audit_sys_operations
          • audit_trail
          • clog_max_unconfirmed_log_count
          • clog_persistence_compress_func
          • connection_control_failed_connections_threshold
          • connection_control_min_connection_delay
          • connection_control_max_connection_delay
          • enable_clog_persistence_compress
          • enable_early_lock_release
          • enable_monotonic_weak_read
          • external_kms_info
          • enable_sql_extension
          • default_progressive_merge_num
          • backup_data_file_size
          • io_category_config
          • log_disk_utilization_limit_threshold
          • log_disk_utilization_threshold
          • major_compact_trigger
          • ddl_thread_score
          • compaction_low_thread_score
          • max_stale_time_for_weak_consistency
          • compaction_high_thread_score
          • minor_compact_trigger
          • compaction_mid_thread_score
          • ob_enable_batched_multi_statement
          • ob_proxy_readonly_transaction_routing_policy
          • ob_ssl_invited_common_names
          • open_cursors
          • plsql_code_type
          • plsql_debug
          • plsql_optimize_level
          • plsql_warnings
          • sql_work_area
          • tde_method
          • writing_throttling_maximum_duration
          • writing_throttling_trigger_percentage
          • workarea_size_policy
          • plsql_v2_compatibility
          • job_queue_processes
          • ha_high_thread_score
          • ha_mid_thread_score
          • ha_low_thread_score
          • ob_compaction_schedule_interval
          • default_auto_increment_mode
          • ob_query_switch_leader_retry_timeout
          • default_enable_extended_rowid
          • major_freeze_duty_time
          • undo_retention
          • query_response_time_stats
          • query_response_time_flush
          • query_response_time_range_base
          • merger_check_interval
          • freeze_trigger_percentage
          • cpu_quota_concurrency
          • arbitration_timeout
          • compatible
          • log_transport_compress_all
          • log_transport_compress_func
          • rpc_memory_limit_percentage
          • tenant_sql_login_thread_count
          • tenant_sql_net_thread_count
          • dump_data_dictionary_to_log_interval
          • enable_user_defined_rewrite_rules
          • partition_balance_schedule_interval
          • log_disk_throttling_percentage
          • enable_rebalance
          • balancer_idle_time
          • log_disk_throttling_maximum_duration
          • ls_gc_delay_time
          • standby_db_preferred_upstream_log_region
          • archive_lag_target
          • range_optimizer_max_mem_size
          • log_restore_concurrency
          • log_archive_concurrency
          • standby_db_fetch_log_rpc_timeout
          • enable_transfer
          • kv_ttl_duty_duration
          • kv_ttl_history_recycle_interval
          • enable_kv_ttl
          • ttl_thread_score
          • compaction_dag_cnt_limit
          • compaction_schedule_tablet_batch_cnt
          • kv_transport_compress_func
          • kv_transport_compress_threshold
          • optimizer_index_cost_adj
          • default_table_store_format
    • Database object management
      • Overview
      • 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
            • Create an external table
            • Overview
            • Manage external files
        • Create and manage partitions
          • Overview
          • Drop a partition
          • Create a partitioned table
          • Rename a partition
          • Partition pruning
          • Truncate a partition
          • Add a partition
          • Query data in specified partitions
          • Modify partitioning rules
          • Create indexes on partitioned tables
            • Global indexes
            • Local indexes
            • Overview
        • Create and manage table groups
          • Drop a table group
          • Query information about a table group
          • Manage tables in a table group
          • Add tables to a table group
          • Modify the SHARDING attribute of a table group
          • Overview
          • Create a table group
        • Create and manage indexes
          • Overview
          • Monitor indexes
          • Create an index
          • Query indexes
          • System functions not supported for function-based indexes
          • System functions supported for function-based indexes
          • Drop an index
        • Manage views
          • Manage standard views
          • Manage materialized views
            • Materialized views
              • Drop a materialized view
              • Refresh a materialized view
              • Query a materialized view
              • Overview
              • Create a materialized view
            • Materialized view logs
              • Overview
              • Create a materialized view log
              • Drop a materialized view log
        • Manage sequences
        • Manage synonyms
        • Create and manage triggers
          • Create an INSTEAD OF trigger
          • Modify and drop a trigger
          • Create a DML trigger
          • Query trigger information
          • Disable or enable a trigger
          • Create a composite trigger
          • Overview
        • Manage directory objects
        • Create and manage DBLinks
          • Drop a DBLink
          • Use a DBLink to access data in a remote database
          • Query existing DBLinks
          • Use a DBLink to modify data in a remote database
          • Install and configure OCI
          • Create a DBLink
      • MySQL mode
        • Create and manage databases
          • Create a database
          • View databases
          • Modify a database
          • Drop a database
        • Create and manage tables
          • Empty a table
          • Create a table
          • Define column constraints
          • Lock a table
          • Modify a table
          • Query the table definition
          • Drop a table
          • Define an auto-increment column
          • Overview
          • Column skip index attribute
          • Create and manage external tables
            • Overview
            • Manage external files
            • Create an external table
        • 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
        • Create and manage table groups
          • Manage tables in a table group
          • Overview
          • Drop a table group
          • Add tables to a table group
          • Create a table group
          • Modify the SHARDING attribute of a table group
          • Query information about a table group
        • Create and manage indexes
          • System functions supported for function-based indexes
          • Query indexes
          • Drop an index
          • Monitor indexes
          • System functions not supported for function-based indexes
          • Create an index
          • Overview
        • Manage views
          • Manage standard views
          • Manage materialized views
            • Materialized views
              • Query a materialized view
              • Overview
              • Create a materialized view
              • Refresh a materialized view
              • Drop a materialized view
            • Materialized view logs
              • Overview
              • Create a materialized view log
              • Drop a materialized view log
        • Create and manage sequences
          • Modify a sequence
          • Query sequences
          • Create a sequence
          • Drop a sequence
          • Reference a sequence
        • Create and manage triggers
          • Overview
          • Create a DML trigger
          • Query trigger information
          • Drop a trigger
        • Create and manage DBLinks
          • Use a DBLink to access data in a remote database
          • Query a DBLink
          • Drop a DBLink
          • Create a DBLink
    • System principles
      • Development of OceanBase Database
      • Overall architecture of OceanBase Database
      • Database objects
        • Oracle mode
          • Partitions
            • Overview
            • Partitioning keys
            • Partitioning types
            • Partitioned indexes
          • Tables
            • Overview
            • Data type
              • ROWID data types
              • Numeric data types
              • Datetime data types
              • LOB data types
              • Character data types
              • Multi-model data types
              • Overview
              • Format model
                • Number format models
                • Overview
                • Datetime format models
            • Integrity constraints
            • Table storage
            • Table compression
            • Partitioned table
            • Tables with and without a primary key
            • Temporary tables
          • Views
            • Views in a database
            • Materialized views
              • Materialized view logs
              • Materialized views
              • Creation and update strategies for materialized views
            • Standard views
              • Standard views
              • Overview
              • Oracle-compatible views
              • View operations and data access
              • OceanBase-specific views
          • Introduction
            • Overview
            • Database object types
            • Database object storage
            • Dependencies between database objects
          • Other objects
            • Sequences
            • Synonyms
          • Data integrity
            • Overview
            • Use of integrity constraints
            • Integrity constraint type
              • UNIQUE KEY constraints
              • Overview
              • FOREIGN KEY constraints
              • PRIMARY KEY constraints
              • NOT NULL constraints
              • CHECK constraints
          • System views
            • Dictionary views
            • Performance views
          • Indexes
            • Local and global indexes
            • Unique and non-unique indexes
            • Index storage
            • Use indexes
            • Overview
        • MySQL mode
          • Data integrity
            • Overview
            • Integrity constraint type
              • PRIMARY KEY constraints
              • Overview
              • NOT NULL constraints
              • UNIQUE KEY constraints
              • FOREIGN KEY constraints
            • Use of integrity constraints
          • 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
          • Introduction
            • Overview
            • Database object types
            • Database object storage
            • Dependencies between database objects
          • Indexes
            • About indexes
            • Index storage
            • Use indexes
            • Unique and non-unique indexes
            • Spatial indexes
            • Local and global indexes
          • Partitions
            • Partitioned indexes
            • Overview
            • Partitioning types
            • Partitioning keys
          • Tables
            • Table storage
            • Tables with and without a primary key
            • Partitioned table
            • Table compression
            • Integrity constraints
            • Overview
            • Data type
              • Numeric data types
              • LOB data types
              • Datetime data types
              • Overview
              • Multi-model data types
              • JSON data types
              • Spatial data types
              • Character data types
          • System views
            • Dictionary views
            • Performance views
      • OBServer node architecture
        • Structure of the OBServer node installation directory
        • Configuration files
        • Logs
        • Memory management
          • Memory-related views
          • Memory-related parameters
          • Diagnose memory errors
          • Memory usage logs
          • Overview
        • observer thread model
          • Threads
          • Worker threads
          • Background threads
      • Storage architecture
        • Overview
        • Data storage
          • Overview
          • MemTables
          • SSTables
          • Columnar storage
          • Compression and encoding
        • Compaction
          • Overview
          • Major compaction
          • Minor compaction
        • Multi-level caches
        • Query processing
        • Data integrity
          • Detect silent data corruption
      • User interface and query language
        • Client programming languages
        • SQL
          • Query SQL execution plans
          • Execution process of SQL queries
          • Introduction
            • SQL data access
            • SQL standards
            • Overview
          • Distributed execution plan
            • Perform distributed execution and parallel queries
            • Manage distributed execution plans
            • Run and disable a parallel query
            • Generate distributed execution plans
            • Perform parameter tuning for a parallel query
          • SQL statements
            • Overview
            • DDL statements
            • DCL statements
            • DML statements
        • PL
          • PL concepts
            • MySQL mode
              • Functions
              • Stored procedures
              • Subprograms
              • Triggers
            • Oracle mode
              • Subprograms
              • Triggers
              • Functions
              • Stored procedures
              • Packages
          • PL subprogram execution mechanism
      • 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
      • 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
            • Horizontal scaling of tenant resources
            • Overview
            • Cross-zone management of tenant resources
            • Vertical scaling of tenant resources
      • Multi-tenant architecture
        • Tenants
        • Overview
        • Compatibility modes
        • Tenants and resource management
          • Resource unit balancing
          • Multi-tenant resource isolation
          • Tenant resource management
      • Transaction management
        • Transaction concurrency and consistency
          • Overview
          • Multi-version read consistency
          • Concurrency control
            • Overview
            • Lock mechanism
          • Transaction isolation level
            • Transaction isolation levels in MySQL mode
            • Overview
            • Transaction isolation levels in Oracle mode
          • Weak consistency read
        • Transaction
          • Overview
          • Statement-level atomicity
          • Redo logs
          • Transaction structure
          • XA transactions
          • Local transactions
          • GTS
          • Transaction control
            • Active transactions
            • Overview
            • Savepoint
            • Transaction control statements
              • MySQL transaction control
              • Oracle transaction control
          • Distributed transaction
            • Overview
            • Two-phase commit
      • Data reliability and high availability
        • Deployment solutions for disaster recovery
        • Arbitration-based high availability solution
        • Physical Standby Database solution
        • Data protection
          • Recycle bin
          • Flashback queries
          • Overview
        • High availability architecture
          • Overview
          • ODP high availability
          • Leader election in distributed systems
          • Multi-replica log synchronization
          • Paxos protocol
          • Automatic handling of node failures
        • Backup and restore
          • Overview
          • Backup directory structures
          • Restore architecture
          • Backup architecture
      • Database security
        • Security audit
        • Monitoring and alerting
        • Access control
        • Authentication
        • Data transmission encryption
        • Data storage encryption
        • Overview
    • Database design specifications and practices
      • Character set specifications
      • Comments
      • ORM conventions
      • Database connection specifications
      • Exception handling
      • Object structure design specifications
        • Field design
        • Table structure design
        • Partitioned table design
        • Index design
        • Other structural designs
      • Object naming conventions
        • Tenant naming conventions
        • Overview
        • Other naming conventions
        • User naming conventions
        • Field naming conventions
        • Table naming conventions
    • Performance tuning
      • Overview
      • SQL tuning
        • Execution process of SQL queries
        • SQL execution plans
          • Fast parameterization
          • Plan cache
          • Display real-time execution plans
          • Introduction to SQL execution plans
          • SQL tuning practice with EXPLAIN
          • Execution plan operators
            • SUBPLAN FILTER
            • COUNT
            • INTERSECT
            • SUBPLAN SCAN
            • JOIN
            • DELETE
            • SEQUENCE
            • EXCHANGE
            • GROUP BY
            • FOR UPDATE
            • TABLE SCAN
            • UNION
            • MERGE
            • EXCEPT/MINUS
            • UPDATE
            • WINDOW FUNCTION
            • SELECT INTO
            • GI
            • LIMIT
            • DISTINCT
            • MATERIAL
            • INSERT
            • SORT
        • Distributed execution plans
          • Schedule distributed execution plans
          • Parallel DML
          • Enable parallel execution and set the degree of parallelism
          • Perform parameter tuning for a parallel query
          • Manage distributed execution plans
          • Perform distributed execution and parallel queries
          • Auto DOP
          • Execute parallel queries
          • Generate a distributed plan
        • Parallel execution plans
          • Quick start
          • Classification and optimization of parallel execution
          • Introduction
          • Parallel execution tuning tips
          • Parallel execution diagnostics
          • Set concurrent execution
            • Concurrency control and queuing
            • Set a DOP for parallel execution
            • Set parallel execution parameters
        • SQL tuning
          • General procedure
          • Overview
          • SQL execution performance monitoring
            • GV$OB_SQL_AUDIT
            • SQL Trace
            • Plan cache views
            • SQL performance analysis example
              • Use SQL Audit to analyze wait events in a query
              • Analyze SQL queries that cause an abrupt RT jitter
              • View and analyze the shape of an execution plan
              • Analyze slow SQL queries
              • Query the distribution of SQL traffic and QPS among OBServer nodes
              • Check whether SQL queries are balanced across servers in a cluster
              • Find the TOP N SQL queries
              • Analyze whether an unusually large number of remote execution requests exist in the system or the execution of an SQL statement
              • Find full table scan SQL statements in a tenant
              • Find the TOP N queries with the longest execution time within a certain period
              • Analyze queries related to distributed plans
              • Check whether the RPC execution count of a distributed subplan is balanced across servers in a cluster
          • Query rewrite
            • Cost-based query rewrite
            • Overview
            • Rule-based query rewriting
          • Query optimization
            • Join algorithm
              • Overview
              • Join algorithms
              • Runtime filter
              • Join order
            • Access path
              • Overview
              • Rule-based path selection
              • Cost-based path selection
          • Optimizer statistics
            • Overview of statistics
            • Statistics collection methods
              • Overview
              • Histograms
              • Manual statistics collection
              • Automatic statistics collection
              • Online statistics collection
              • Dynamic sampling
            • Statistics management
              • Overview
              • Delete statistics
              • Set statistics
              • Import and export statistics
              • Lock and unlock statistics
              • Manage statistics history
              • Manage statistics preferences
            • Monitoring and diagnostics for statistics collection
            • Examples
          • Manage execution plans
            • Optimizer hints
            • Plan binding
            • SQL plan management
        • Glossary
        • General issues in SQL tuning
      • System tuning
        • OS parameter tuning
        • Database parameter tuning
          • CPU parameters
          • I/O parameters
          • Memory-related parameters
          • Network transmission parameters
        • ODP parameter tuning
          • Network transmission parameters
          • Routing parameters on nodes
          • CPU parameters
      • Performance related tools
        • OCP
        • System tools
          • CPU tools
          • Memory tools
          • Top
          • Network tools
          • Disk I/O tools
        • Internal tables
          • GV$OB_SQL_AUDIT
          • GV$OB_TRANSACTION_PARTICIPANTS
          • GV$SYSSTAT
        • Logs
          • slow trans
          • dump tenant info
          • Trace logs
      • Performance diagnosis
        • Monitor and diagnose the cluster performance
        • Diagnose tenant performance
        • Monitor ODP performance
        • Monitor host performance
        • WR management
          • Overview
          • Manage WR
          • Monitor historical session performance
          • Clean up WR data
        • ASH report
          • Analyze ASH reports
          • Generate ASH reports
          • ASH
      • Business model tuning
        • SQL diagnostics
        • Distributed transactions
        • Load balancing
    • Components & tools
      • O&M management
        • ob_error
        • OBD
        • ob-operator
        • OBShell
          • Overview
          • API references
            • OBShell API requests
            • AgentUpgradeCheck
            • ObUpgradeCheck
            • UpgradeAgent
            • UpgradeOb
            • AddNode
            • GetPublicKey
            • QueryNodeStatus
            • Query the status of an OceanBase cluster
            • OperateDag
            • GetDagDetails
            • GetNodeDetails
            • GetSubtaskDetails
            • QueryUnfinishedTasks
            • QueryUnfinishedAgentTasks
            • QueryUnfinishedObTasks
            • QueryLastObTask
            • QueryLastAgentTask
            • AddNodeBeforeClusterInitialization
            • DeleteNodeBeforeClusterInitialization
            • SetClusterConfig
            • SetServerConfig
            • InitializeCluster
            • StartCluster
            • StopCluster
            • UploadPkg
            • Hybrid encryption for API operations
          • Command line
            • Cluster commands of OBShell
            • Task commands of OBShell
            • Agent commands of OBShell
          • Use OBShell
            • Start or stop OBShell
            • Deploy an OceanBase cluster
            • Take over an OceanBase cluster not deployed by OBShell
            • Start an OceanBase cluster
            • Stop an OceanBase cluster
            • Use OBShell to scale out an OceanBase cluster
            • Upgrade an OceanBase cluster
            • Upgrade OBShell
            • Configure an OBServer node to start automatically on boot
        • ob_admin
          • ob_admin overview
          • clog
            • log_tool
            • Format of clogs
            • Transaction logs
          • dumpsst
          • dump_backup
      • Data integration
        • OBLogProxy
        • OBLOADER & OBDUMPER
        • Partition calculator
          • Overview
          • Use the ob-partition-calculator component
        • CDC
          • Overview
          • obcdc development guide
          • obcdc
            • FAQ about obcdc
            • Deploy and use obcdc
              • Install and deploy obcdc
              • obcdc_tailf
            • obcdc parameters
              • General obcdc parameters
              • obcdc parameters
          • oblogmsg
            • Install and deploy oblogmsg
            • Description of some oblogmsg API operations
      • Monitoring and diagnostics
        • obdiag
        • SQL Diagnoser
          • Overview
          • Deploy and use SQL Diagnoser
            • Install SQL Diagnoser
            • Use SQL Diagnoser
          • SQL Diagnoser remarks
            • Built-in diagnostic items
            • Diagnostic rule expression
            • API operations
            • Diagnostic items of SQL review
        • DOOBA
      • Stress testing tools
        • mysqltest
          • Use obd.sh to run mysqltest
          • Use mysqltest
            • Add a test case
            • Test case writing conventions
            • General test case writing commands
    • System management
      • Configuration management
        • Overview
        • Set parameters
        • Set variables
      • Storage management
        • Major compaction management
          • Overview
          • Automatically trigger a major compaction
          • Configure scheduled major compactions
          • Adaptive major compaction
          • Manually initiate a major compaction
          • View merge information
          • Manually control a major compaction
          • Modify major compaction settings
        • Minor compaction management
          • Modify minor compaction parameters
          • Automatically trigger a minor compaction
          • Manually initiate a minor compaction
          • Overview
          • View dump information
        • Data compression
          • Data encoding and compression
          • Overview
      • Memory management
        • Overview
        • Manage the memory of the plan cache
        • Manage internal system memory
        • Set the maximum memory for an OceanBase database
        • Memory management within a tenant
        • Common memory issues
        • Memleak-based regular memory leak diagnostics mechanism
        • Memory structure
        • Query memory usage information
      • Process management
        • Background threads of OceanBase Database
        • Overview
        • Multi-tenant threads of OceanBase Database
        • FAQ about multi-tenant threads
        • View the thread status
      • Disk management
        • Configure automatic scale-out of disk space for data files
    • Database proxy
      • Connection and routing
      • View tenant sessions
      • Physical connections
      • Terminate a tenant session
      • OceanBase Database Proxy
      • Set the maximum number of connections for a tenant
      • Logical connection
        • Query session variables
        • Terminate a server session
        • Query the metrics of a session
        • Query all sessions
        • Query the details of a session
      • Route management
        • LDC-based routing
        • Table-based routing of ODP
        • ODP routing policy
          • Read/Write splitting
          • Follower-first read
          • Blocklist mechanism
          • Transaction routing
      • ODP
        • ODP startup parameters
        • Overview
        • Manage ODP
          • Start an ODP
          • Stop an ODP
          • Restart an ODP
          • Refresh ODP configurations
          • Add an ODP
          • Upgrade one or more ODPs
          • Delete an ODP
        • Manage ODP clusters
          • Restart all ODPs in an ODP cluster
          • Create an ODP cluster
          • Delete an ODP cluster
          • Manage ODP cluster parameters
          • Upgrade all ODPs in an ODP cluster
          • Manage OceanBase clusters connected to an ODP cluster
          • Monitor ODP cluster performance
    • Error codes
      • Oracle mode
        • ORA-01000 to ORA-01499
        • ORA-30000 to ORA-49999
        • ORA-20000 to ORA-29999
        • ORA-10000 to ORA-19999
        • ORA-50000 to ORA-99999
        • ORA-05000 to ORA-10000
        • ORA-01500 to ORA-01999
        • PLS-00000 to PLS-00999
        • ORA-00000 to ORA-00999
        • Overview
        • ORA-02000 to ORA-04999
      • MySQL mode
        • 7000 to 7999
        • 4000 to 4499
        • 5000 to 5999
        • Overview
        • 9500 to 9999
        • 4500 to 4999
        • 10000 to 12000
        • 8000 to 8999
        • 9000 to 9499
        • 6000 to 6999
        • 0001 to 3999
        • 22998, 30926, 38104, and 38105
    • Drivers
      • OBCI
      • OceanBase Connector/ODBC
      • ECOB
      • OceanBase Connector/J
      • OceanBase Connector/C
    • Integrations
      • Superset
      • DolphinScheduler
      • SeaTunnel
      • Linkis
      • Maxwell
      • Bytebase
    • Multi-model API
      • RPC message compression
  • FAQ
    • FAQs
    • SQL statements
    • FAQs
    • Cluster management
    • High availability
    • FAQ about columnstores
  • Release Notes
    • Version rules
    • OceanBase Database Enterprise Edition
      • V3.2
        • OceanBase Database Enterprise Edition V3.2.0
        • OceanBase Database Enterprise Edition V3.2.3
        • OceanBase Database Enterprise Edition V3.2.4
        • OceanBase Database Enterprise Edition V3.2.2
        • OceanBase Database Enterprise Edition V3.2.1
      • V4.1
        • OceanBase Database Enterprise Edition V4.1.0
      • V4.2
        • OceanBase Database Enterprise Edition V4.2.1
        • OceanBase Database Enterprise Edition V4.2.0
      • V4.3
        • OceanBase Database Enterprise Edition V4.3.0
      • V3.1
        • OceanBase Database Enterprise Edition V3.1.1
        • OceanBase Database Enterprise Edition V3.1.2
      • V2.2
        • OceanBase Database Enterprise Edition V2.2.77
        • OceanBase Database Enterprise Edition V2.2.76
        • OceanBase Database Enterprise Edition V2.2.30
    • OceanBase Database Community Edition
      • V4.0
        • OceanBase Database Community Edition V4.0.0
      • V3.1
        • OceanBase Database Community Edition V3.1.3
        • OceanBase Database Community Edition V3.1.4
        • OceanBase Database Community Edition V3.1.2
        • OceanBase Database Community Edition V3.1.1
        • OceanBase Database Community Edition V3.1.5
      • V4.2
        • OceanBase Database Community Edition V4.2.0
        • OceanBase Database Community Edition V4.2.1
      • V4.3
        • OceanBase Database Community Edition V4.3.0
      • V4.1
        • OceanBase Database Community Edition V4.1.0

Download PDF

What's New Overview Differences between the Enterprise Edition and the Community Edition System architecture Compatibility with Oracle SQL data types Built-in functions System views Compatibility with MySQL Limitations Video tutorials Try out OceanBase Database Community Edition Try out operational OLAP Try out parallel import and data compression Try out the multi-tenant feature Build a Java application Build a C application Basic SQL operations (Oracle mode) Basic SQL operations (MySQL mode) Before you begin Build a Python application Build a Java application Build a C application Build a Go application Delete old clusters Overview High availability deployment solutions for OceanBase clusters Overview Deploy OceanBase Database in a Kubernetes cluster Deployment process Import data from SQL files to OceanBase Database Overview 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 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 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 Use OBLOADER & OBDUMPER to migrate data from a MySQL tenant to an Oracle tenant in 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 Oracle tenants in OceanBase Database Use OBLOADER & OBDUMPER to migrate data between MySQL tenants in OceanBase Database Use OBLOADER & OBDUMPER to migrate data from an Oracle tenant to a MySQL tenant in OceanBase Database Import data in bypass mode by using the INSERT INTO SELECT statement Import data in bypass mode by using the LOAD DATA statement Overview Use Flink CDC to synchronize data from a MySQL database 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 ChunJun to migrate data from a MySQL database to OceanBase Database Migrate data from a MySQL database to OceanBase Database using CloudCanal Use DataX to migrate table data from a MySQL database to OceanBase Database Use DBCAT to migrate schemas from a MySQL database to OceanBase Database Use Canal to synchronize data from a MySQL database to OceanBase Database Import data by using the LOAD DATA statement Use DataX to migrate CSV files to OceanBase 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 Use OMS to migrate data from an Oracle tenant of OceanBase Database to an Oracle database Use OMS to migrate data from a PostgreSQL database to a MySQL tenant of OceanBase Database Export data by using OUTFILE statements Migrate resource units Migrate data between tables 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 Use OMS to migrate data from a TiDB database to a MySQL tenant of OceanBase Database Log on to an OceanBase tenant Overview Traffic distribution Data distribution Overview Identify bottlenecks on the data link Deadlock detection Overview Check tenant resource usage Check cluster parameters Check cluster resource usage Check the host status Check the NTP offset Check the OBServer node status Overview Cluster parameters Overview Introduction to physical backup and restore Experience physical backup and restore with simplified deployment Deploy NFS Optimize backup and restore performance Emergency response overview Analysis, diagnosis, and decision-making procedure Flashback queries
OceanBase logo

The Unified Distributed Database for the AI Era.

Follow Us
Products
OceanBase CloudOceanBase EnterpriseOceanBase Community EditionOceanBase seekdb
Resources
DocsBlogLive DemosTraining & CertificationTicket
Company
About OceanBaseTrust CenterLegalPartnerContact Us
Follow Us

© OceanBase 2026. All rights reserved

Cloud Service AgreementPrivacy PolicySecurity
Contact Us
Document Feedback
  1. Documentation Center
  2. OceanBase Database
  3. SQL
  4. V4.3.0
iconOceanBase Database
SQL - V 4.3.0
SQL
KV
  • V 4.6.0
  • V 4.4.2
  • V 4.3.5
  • V 4.3.3
  • V 4.3.1
  • V 4.3.0
  • V 4.2.5
  • V 4.2.2
  • V 4.2.1
  • V 4.2.0
  • V 4.1.0
  • V 4.0.0
  • V 3.1.4 and earlier

GV$OB_SQLSTAT

Last Updated:2026-04-15 08:30:02  Updated
share
What is on this page
Purpose
Columns
Sample query
References

folded

share

Note

This view is introduced since OceanBase Database V4.2.2.

Purpose

The GV$OB_SQLSTAT view displays the basic performance statistics of SQL statements in the cluster. Each row indicates one SQL statement. To be specific, each row is uniquely identified by SQL_ID and Plan_Hash. A column whose name contains _DELTA indicates the incremental value since a Workload Repository (WR) snapshot was last collected.

Columns

Column
Type
Nullable?
Description
SVR_IP VARCHAR2(46) NO The IP address of the OBServer node.
SVR_PORT NUMBER NO The port number of the OBServer node.
TENANT_ID NUMBER NO The ID of the tenant.
SQL_ID VARCHAR2(32) NO The ID of the SQL statement.
PLAN_ID NUMBER NO The ID of the execution plan.
PLAN_HASH NUMBER unsigned NO The hash value of the execution plan.
PLAN_TYPE NUMBER NO For SQL plan caching, this column indicates the type of the plan. Valid values:
  • 1: indicates a local plan.
  • 2: indicates a remote plan.
  • 3: indicates a distributed plan.

For PL object caching, this column indicates the type of the PL object. Valid values:
  • 1: indicates a procedure.
  • 2: indicates a function.
  • 3: indicates a package.
  • 4: indicates an anonymous block.
QUERY_SQL CLOB NO The full text of the SQL statement.
SQL_TYPE NUMBER NO The type of the SQL statement.
MODULE VARCHAR2(64) YES The application module by which the statement was first parsed.
ACTION VARCHAR2(64) YES The application action by which the statement was first parsed.
PARSING_DB_ID NUMBER NO The ID of the database where the statement was parsed.
PARSING_DB_NAME VARCHAR2(128) NO The name of the database where the statement was parsed.
PARSING_USER_ID NUMBER NO The ID of the user who parsed the statement.
EXECUTIONS_TOTAL NUMBER NO The total number of executions of the plan in the plan cache.
EXECUTIONS_DELTA NUMBER NO The incremental number of executions of the plan in the plan cache.
DISK_READS_TOTAL NUMBER NO The total number of disk reads.
DISK_READS_DELTA NUMBER NO The incremental number of disk reads.
BUFFER_GETS_TOTAL NUMBER NO The total number of logical reads from the cache.
BUFFER_GETS_DELTA NUMBER NO The incremental number of logical reads from the cache.
ELAPSED_TIME_TOTAL NUMBER NO The total execution time of the statement. If the statement is executed by multiple threads in parallel, this value is the sum of the execution time taken by each thread.
ELAPSED_TIME_DELTA NUMBER NO The incremental execution time of the statement.
CPU_TIME_TOTAL NUMBER NO The total CPU time.
CPU_TIME_DELTA NUMBER NO The incremental amount of CPU time.
CCWAIT_TOTAL NUMBER NO The total amount of time waited for events of the concurrency class.
CCWAIT_DELTA NUMBER NO The incremental amount of time waited for events of the concurrency class.
USERIO_WAIT_TOTAL NUMBER NO The total amount of time waited for events of the user I/O class.
USERIO_WAIT_DELTA NUMBER NO The incremental amount of time waited for events of the user I/O class.
APWAIT_TOTAL NUMBER NO The total amount of time waited for events of the application class.
APWAIT_DELTA NUMBER NO The incremental amount of time waited for events of the application class.
PHYSICAL_READ_REQUESTS_TOTAL NUMBER NO The total number of physical reads.
PHYSICAL_READ_REQUESTS_DELTA NUMBER NO The incremental number of physical reads.
PHYSICAL_READ_BYTES_TOTAL NUMBER NO The total size in bytes of physical reads.
PHYSICAL_READ_BYTES_DELTA NUMBER NO The incremental size in bytes of physical reads.
WRITE_THROTTLE_TOTAL NUMBER NO The total amount of time of throttling for writes to the MemStore.
WRITE_THROTTLE_DELTA NUMBER NO The incremental amount of time of throttling for writes to the MemStore.
ROWS_PROCESSED_TOTAL NUMBER NO The total number of rows processed by the statement.
ROWS_PROCESSED_DELTA NUMBER NO The incremental number of rows processed by the statement.
MEMSTORE_READ_ROWS_TOTAL NUMBER NO The total number of rows read from the MemStore.
MEMSTORE_READ_ROWS_DELTA NUMBER NO The incremental number of rows read from the MemStore.
MINOR_SSSTORE_READ_ROWS_TOTAL NUMBER NO The total number of rows read from the minor SSStore.
MINOR_SSSTORE_READ_ROWS_DELTA NUMBER NO The incremental number of rows read from the minor SSStore.
MAJOR_SSSTORE_READ_ROWS_TOTAL NUMBER NO The total number of rows read from the major SSStore.
MAJOR_SSSTORE_READ_ROWS_DELTA NUMBER NO The incremental number of rows read from the major SSStore.
RPC_TOTAL NUMBER NO The total number of remote procedure call (RPC) requests.
RPC_DELTA NUMBER NO The incremental number of RPC requests.
FETCHES_TOTAL NUMBER NO The total number of result set fetches.
FETCHES_DELTA NUMBER NO The incremental number of result set fetches.
RETRY_TOTAL NUMBER NO The total number of retries of the SQL statement.
RETRY_DELTA NUMBER NO The incremental number of retries of the SQL statement.
PARTITION_TOTAL NUMBER NO The total number of partitions scanned by the SQL statement.
PARTITION_DELTA NUMBER NO The incremental number of partitions scanned by the SQL statement.
NESTED_SQL_TOTAL NUMBER NO The total number of executions of nested SQL statements. The value increases by 1 each time a nested SQL statement is executed.
NESTED_SQL_DELTA NUMBER NO The incremental number of executions of nested SQL statements.
SOURCE_IP CHAR(46) NO The IP address of the request source.
SOURCE_PORT NUMBER NO The port number of the request source.

The following table lists the values in the SQL_TYPE column and the corresponding statements.

Value
Statement type
Value
Statement type
1 SELECT 2 INSERT
3 REPLACE 4 DELETE
5 UPDATE 6 MERGE
7 EXPLAIN 8 CREATE TENANT
9 DROP TENANT 10 LOCK TENANT
11 MODIFY TENANT 12 CHANGE TENANT
13 CREATE RESOURCE POOL 14 DROP RESOURCE POOL
15 ALTER RESOURCE POOL 16 SPLIT RESOURCE POOL
17 CREATE RESOURCE UNIT 18 ALTER RESOURCE UNIT
19 DROP RESOURCE UNIT 20 CREATE TABLE
21 DROP TABLE 22 ALTER TABLE
23 CREATE INDEX 24 DROP INDEX
25 CREATE VIEW 26 ALTER VIEW
27 DROP VIEW 28 HELP
29 SHOW TABLES 30 SHOW DATABASES
31 SHOW COLUMNS 32 SHOW VARIABLES
33 SHOW TABLE 34 SHOW SCHEMA
35 SHOW CREATE DATABASE 36 SHOW CREATE TABLE
37 SHOW CREATE VIEW 38 SHOW CREATE PROCEDURE
39 SHOW CREATE FUNCTION 40 SHOW PARAMETERS
41 SHOW SERVER STATUS 42 SHOW INDEXES
43 SHOW WARNINGS 44 SHOW ERRORS
45 SHOW PROCESSLIST 46 SHOW CHARSET
47 SHOW COLLATION 48 SHOW TABLEGROUPS
49 SHOW STATUS 50 SHOW TENANT
51 SHOW CREATE TENANT 52 SHOW TRACE
53 SHOW ENGINES 54 SHOW PRIVILEGES
55 SHOW PROCEDURE STATUS 56 SHOW FUNCTION STATUS
57 SHOW GRANTS 58 CREATE USER
59 DROP USER 60 SET PASSWORD
61 LOCK USER 62 RENAME USER
63 GRANT OBJECT 64 REVOKE OBJECT
65 PREPARE 66 SET
67 EXECUTE 68 DEALLOCATE
69 START TRANS 70 END TRANS
71 KILL 72 ALTER SYSTEM
73 ALTER SYSTEM SETTP 74 CHANGE OBI
75 SWITCH MASTER 76 ALTER SYSTEM SERVER
77 BOOTSTRAP 78 CS DISKMAINTAIN
79 TABLET 80 REPORT REPLICA
81 SWITCH ROOTSERVER 82 SWITCH UPDATESERVER
83 CLUSTER MANAGER 84 FREEZE
85 FLUSH CACHE 86 FLUSH KVCACHE
87 FLUSH ILOGCACHE 88 DROP MEMTABLE
89 CLEAR MEMTABLE 90 PRINT ROOT TABLE
91 ADD UPDATESERVER 92 DELETE UPDATESERVER
93 CHECK ROOT TABLE 94 CLEAR ROOT TABLE
95 REFRESH SCHEMA 96 CREATE DATABASE
97 USE DATABASE 98 ADMIN SERVER
99 ADMIN ZONE 100 SWITCH REPLICA ROLE
103 RECYCLE REPLICA 104 MERGE
105 ALTER DATABASEE 106 DROP DATABASE
107 CREATE TABLEGROUP 108 DROP TABLEGROUP
109 ALTER TABLEGROUP 110 TRUNCATE TABLE
111 RENAME TABLE 112 CREATE TABLE LIKE
113 SET NAMES 114 CLEAR LOCATION CACHE
115 RELOAD GTS 116 RELOAD UNIT
117 RELOAD SERVER 118 RELOAD ZONE
119 CLEAR MERGE ERROR 120 MIGRATE UNIT
121 UPGRADE VIRTUAL SCHEMA 122 RUN JOB
123 EMPTY QUERY 124 CREATE OUTLINE
125 ALTER OUTLINE 126 DROP OUTLINE
129 SWITCH RS ROLE 130 FLASHBACK TENANT
131 FLASHBACK DATABASE 132 FLASHBACK TABLE
133 FLASHBACK 134 PURGE RECYCLEBIN
135 PURGE TENANT 136 PURGE DATABASE
137 PURGE TABLE 138 PURGE INDEX
139 SHOW RECYCLEBIN 140 UPGRADE
141 CREATE ROUTINE 142 DROP ROUTINE
143 ALTER ROUTINE 144 CALL
145 ANONYMOUS BLOCK 146 CREATE PACKAGE
147 CREATE PACKAGE BODY 148 ALTER PACKAGE
149 DROP PACKAGE 150 REFRESH TIME ZONE INFO
151 CANCEL TASK 154 SET DISK VALID
155 CREATE SYNONYM 156 DROP SYNONYM
157 CLEAR BALANCE TASK 158 BUILD INDEX SSTABLE
159 ANALYZE 160 SHOW CREATE TABLEGROUP
161 LOAD DATA 162 STMT TYPE MAX
163 CREATE FUNCTION 164 DROP FUNCTION
165 CREATE SEQUENCE 166 ALTER SEQUENCE
167 DROP SEQUENCE 168 SET TABLE COMMENT
169 SET COLUMN COMMENT 170 SWITCHOVER
171 CREATE TYPE 172 DROP TYPE
173 ALTER DISKGROUP ADD DISK 174 ALTER DISKGROUP DROP DISK
175 DROP CLUSTER 176 CREATE CLUSTER
177 ALTER SYSTEM SET PARAMETER 178 ALTER TABLE
179 OPTIMIZE TENANT 180 OPTIMIZE ALL
181 CREATE SAVEPOINT 182 ROLLBACK SAVEPOINT
183 RELEASE SAVEPOINT 184 CREATE KEYSTORE
185 ALTER KEYSTORE 186 CREATE TABLESPACE
187 DROP TABLESPACE 188 CREATE TRIGGER
189 DROP TRIGGER 190 FLASHBACK TABLE TO SCN
191 CREATE ROLE 192 DROP ROLE
193 ALTER ROLE 194 SET ROLE
195 SYSTEM GRANT 196 SYSTEM REVOKE
197 USER PROFILE 198 ALTER USER PROFILE
199 AUDIT 200 LOGON
201 LOGOFF 202 ALTER CLUSTER
203 ARCHIVELOG 204 BACKUP DATABASE
205 BACKUP MANAGE 206 RESTORE TENANT
207 REFRESH MEMORY STAT 208 PHYSICAL RESTORE TENANT
209 ALTER TABLESPACE 210 ROLLING UPGRADE
211 GRANT ROLE 212 REVOKE ROLE
213 MERGE RESOURCE POOL 214 SHOW TRIGGERS
215 CREATE DBLINK 216 DROP DBLINK
217 CREATE PUBLIC SYNONYM 218 DROP PUBLIC SYNONYM
219 CREATE PROFILE 220 ALTER PROFILE
221 DROP PROFILE 222 ALTER USER
223 XA START 224 XA END
225 XA PREPARE 226 XA COMMIT
227 XA ROLLBACK 228 BACKUP BACKUPSET
229 BACKUP ARCHIVELOG 230 ALTER TRIGGER
231 ALTER USER PRIMARY ZONE 232 SHOW CREATE TRIGGER
233 DIAGNOSTICS 234 BACKUP CLEAN
235 DELETE BACKUP POLICY 236 SHOW QUERY RESPONSE TIME
250 ENABLE SQL THROTTLE 251 DISABLE SQL THROTTLE
252 BACKUP SET ENCRYPTION 253 BACKUP SET DECRYPTION
254 RECOVERY 255 CREATE RESTORE POINT
256 DROP RESTORE POINT 257 RUN UPGRADE JOB
258 STOP UPGRADE JOB 259 FLUSH DAG WARNINGS
261 BACKUP BACKUPPIECE 262 ADD RESTORE SOURCE
263 CLEAR RESTORE SOURCE 264 SHOW RESTORE PREVIEW
265 SET REGION NETWORK BANDWIDTH 266 CREATE DIRECTORY
267 DROP DIRECTORY 268 LOCK TABLE
269 ALTER RESOURCE TENANT 270 ARCHIVE TENANT
271 DISCONNECT CLUSTER 272 WASH MEMORY FRAGMENTATION
273 CREATE CONTEXT 274 DROP CONTEXT
275 CHECKPOINT SLOG 276 REFRESH IO CALIBRATION
277 INSERT ALL 278 PHYSICAL RESTORE STANDBY TENANT
279 RECOVER 280 ADD ARBITRATION SERVICE
281 REMOVE ARBITRATION SERVICE 282 REPLACE ARBITRATION SERVICE
283 SHOW SEQUENCES 284 BACKUP KEY
285 CREATE STANDBY TENANT 286 CANCEL RESTORE
287 TABLE TTL 288 RECOVER TABLE
289 CANCEL RECOVER TABLE 290 CREATE TENANT SNAPSHOT
291 DROP TENANT SNAPSHOT 292 ALTER SYSTEM RESET PARAMETER
293 CLONE TENANT 294 CANCEL CLONE
295 CREATE MLOG 296 DROP MLOG

Sample query

obclient [SYS]> SELECT * FROM SYS.GV$OB_SQLSTAT WHERE ROWNUM = 1\G

The query result is as follows:

*************************** 1. row ***************************
                       SVR_IP: 172.xx.xxx.xxx
                     SVR_PORT: 2882
                    TENANT_ID: 1004
                       SQL_ID: 17605A1DA6B6A2150E9FBCA5D4C7653A
                      PLAN_ID: 25
                    PLAN_HASH: 12254811659671915614
                    PLAN_TYPE: 1
                    QUERY_SQL: SELECT row_id, column_name, column_value FROM __all_core_table WHERE table_name = ? ORDER BY row_id, column_name
                       MODULE: NULL
                       ACTION: NULL
                PARSING_DB_ID: 201001
              PARSING_DB_NAME: oceanbase
              PARSING_USER_ID: 200001
             EXECUTIONS_TOTAL: 33796
             EXECUTIONS_DELTA: 5072
             DISK_READS_TOTAL: 29
             DISK_READS_DELTA: 14
            BUFFER_GETS_TOTAL: 253909
            BUFFER_GETS_DELTA: 38017
           ELAPSED_TIME_TOTAL: 6049268
           ELAPSED_TIME_DELTA: 994076
               CPU_TIME_TOTAL: 0
               CPU_TIME_DELTA: 0
                 CCWAIT_TOTAL: 0
                 CCWAIT_DELTA: 0
            USERIO_WAIT_TOTAL: 0
            USERIO_WAIT_DELTA: 0
                 APWAIT_TOTAL: 0
                 APWAIT_DELTA: 0
 PHYSICAL_READ_REQUESTS_TOTAL: 29
 PHYSICAL_READ_REQUESTS_DELTA: 14
    PHYSICAL_READ_BYTES_TOTAL: 209769
    PHYSICAL_READ_BYTES_DELTA: 92311
         WRITE_THROTTLE_TOTAL: 0
         WRITE_THROTTLE_DELTA: 0
         ROWS_PROCESSED_TOTAL: 33795
         ROWS_PROCESSED_DELTA: 5072
     MEMSTORE_READ_ROWS_TOTAL: 33754
     MEMSTORE_READ_ROWS_DELTA: 5040
MINOR_SSSTORE_READ_ROWS_TOTAL: 62907
MINOR_SSSTORE_READ_ROWS_DELTA: 8559
MAJOR_SSSTORE_READ_ROWS_TOTAL: 15638
MAJOR_SSSTORE_READ_ROWS_DELTA: 5072
                    RPC_TOTAL: 2
                    RPC_DELTA: 0
                FETCHES_TOTAL: 0
                FETCHES_DELTA: 0
                  RETRY_TOTAL: 0
                  RETRY_DELTA: 0
              PARTITION_TOTAL: 33796
              PARTITION_DELTA: 5072
             NESTED_SQL_TOTAL: 0
             NESTED_SQL_DELTA: 0
                    SOURCE_IP: 172.xx.xxx.xxx
                  SOURCE_PORT: 2882
1 row in set

References

  • V$OB_SQLSTAT

  • DBA_WR_SQLSTAT

Previous topic

V$OB_LS_SNAPSHOTS
Last

Next topic

V$OB_SQLSTAT
Next
What is on this page
Purpose
Columns
Sample query
References