OceanBase logo

OceanBase

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

DEPLOY YOUR WAY

OceanBase Cloud

The best way to deploy and scale OceanBase

OceanBase Enterprise

Run and manage OceanBase on your infra

TRY OPEN SOURCE

OceanBase Community Edition

The free, open-source distributed database

OceanBase seekdb

Open source AI native search database

Customer Stories

Real-world success stories from enterprises across diverse industries.

View All
BY USE CASES

Mission-Critical Transactions

Global & Multicloud Application

Elastic Scaling for Peak Traffic

Real-time Analytics

Active Geo-redundancy

Database Consolidation

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

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

DEPLOY YOUR WAY

OceanBase Cloud

The best way to deploy and scale OceanBase

OceanBase Enterprise

Run and manage OceanBase on your infra

TRY OPEN SOURCE

OceanBase Community Edition

The free, open-source distributed database

OceanBase seekdb

Open source AI native search database

Customer Stories

Real-world success stories from enterprises across diverse industries.

View All
BY USE CASES

Mission-Critical Transactions

Global & Multicloud Application

Elastic Scaling for Peak Traffic

Real-time Analytics

Active Geo-redundancy

Database Consolidation

Comprehensive knowledge hub for OceanBase.

Blog

Live Demos

Training & Certification

Documentation

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

View All
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 - V4.0.0Enterprise Edition

  • Overview
    • Overview
    • System architecture
    • Compatibility with MySQL
    • Compatibility with Oracle
      • Overview
      • SQL data types
      • Built-in functions
      • System views
    • Limits
  • Get Started
    • Quick start with OceanBase Database
    • Hands on for OceanBase SQL
      • Usage notes
      • Basic SQL operations (MySQL mode)
      • Basic SQL operations (Oracle mode)
    • Build applications (MySQL Mode)
      • Connect Python applications to OceanBase Database
      • Connect Java applications to OceanBase Database
      • Connect C applications to OceanBase Database
    • Build applications(Oracle Mode)
      • Connect Python applications to OceanBase Database
      • Connect Java applications to OceanBase Database
      • Connect C applications to OceanBase Database
    • Experience OceanBase advanced features
      • Experience scalable OLTP
        • Run the TPC-C benchmark in OceanBase Database
        • Experience the hot row update capability of OceanBase Database
      • Experience operational OLAP
      • Experience parallel import and data compression
      • Experience the multitenancy feature
  • Develop
    • Develop (MySQL Mode)
      • Connect to Oceanbase Database with client
        • Overview
        • Connect to an OceanBase Database tenant by using a MySQL client
        • Connect to an OceanBase Database tenant by using OBClient
        • Connect to OceanBase Database by using ODC
        • Java application
          • OceanBase Connector/J
          • Java APIs
          • Connect Java applications to OceanBase Database
        • C application
          • OceanBase Connector/C
          • C API functions
          • Connect C applications to OceanBase Database
        • Python applications
        • SpringBoot connection example
        • SpringBatch connection example
        • Example of Database connection pool configuration
          • Overview of database connection pool configuration
          • Example of configuring a Tomcat connection pool
          • Example of configuring a C3P0 connection pool
          • Example of configuring a Proxool connection pool
          • Example of configuring a HiKariCP connection pool
          • Example of configuring a DBCP connection pool
          • CommonPool configuration example
          • Example of configuring a JDBC connection pool
        • SpringJDBC connection example
        • SpringJPA connection example
        • Hibernate connection example
        • MyBatis connection example
      • Create and manage database objects
        • About DDL statements
        • View the currently connected database
        • Change the password of a user
        • Data type
          • General data types
          • Unsupported data types
        • Create and manage tables
          • About tables
          • Create a table
          • About auto-increment columns
          • About types of column constraints
          • About table structure modification
          • About table clearing
          • About table dropping
          • Flash back a dropped table
          • About table privileges
        • Create and manage partition tables
          • About partitioned tables
          • Create a partitioned table
          • Manage a partitioned table
          • Create a subpartitioned table
          • Manage a subpartitioned table
          • Partition routing
          • Indexes on partitioned tables
          • Suggestions on using partitioned tables
        • Create and manage indexes
          • About indexes
          • Create an index
          • Drop an index
        • Create and manage views
          • About views
          • Create a view
          • Modify a view
          • Delete a view
        • Create and manage sequences
          • About sequences
          • Create a sequence
          • Modify a sequence
          • Delete a sequence
        • Create and manage triggers
          • About triggers
          • Create a trigger
          • Delete a trigger
      • Query
        • About queries
        • Single-table queries
        • Conditional queries
        • ORDER BY queries
        • GROUP BY queries
        • Use the LIMIT clause in queries
        • Query data from multiple tables
          • About multi-table join queries
          • INNER JOIN queries
          • OUTER JOIN queries
          • Subqueries
        • Use operators and functions in a query
          • Use arithmetic operators in queries
          • Use numerical functions in queries
          • Use string connectors in queries
          • Use string functions in queries
          • Use datetime functions in queries
          • Use type conversion functions in queries
          • Use aggregate functions in queries
          • Use NULL-related functions in queries
          • Use the CASE conditional operator in queries
          • Use the SELECT FOR UPDATE statement to lock query results
        • Execution plan
          • View an execution plan
          • Understand an execution plan
        • Use SQL hints in queries
        • Variables of query timeout
      • DML statements and transactions
        • DML statement
          • About DML statements
          • About the INSERT statement
          • UPDATE statements
          • About the DELETE statement
          • About the REPLACE INTO statement
        • Transactions
          • About transaction control statements
          • Start a transaction
          • Transaction savepoints
          • Commit a transaction
          • Roll back a transaction
          • About transaction timeout
      • Common errors and solutions
        • About error codes
        • Database connection error
        • About timeout
          • Idle session timeout
          • Transaction timeout errors
        • About user
          • Locked user
          • Incorrect user password
        • About table
          • Table already exists
          • Table does not exist
          • Invalid use of NULL value
        • About constraint
          • Unique key conflict
          • Foreign key conflict
        • About SQL commands
          • Data truncation
    • Develop (Oracle Mode)
      • Connect to Oceanbase Database with client
        • Overview
        • Connect to an OceanBase tenant by using an Oracle client
        • Connect to an OceanBase Database tenant by using OBClient
        • Connect to OceanBase Database by using ODC
      • Application development
        • Java application
          • OceanBase Connector/J
          • Java APIs
          • Connect Java applications to OceanBase Database
        • Python application
          • OceanBase Connector/J in Python
          • Python APIs
          • Connect Python applications to OceanBase Database
        • 300.c-application-1
          • OceanBase Connector/C
          • OBCI APIs
          • Connect C applications to OceanBase Database
      • Create and manage database objects
        • About DDL statements
        • View the currently connected database
        • Change the password of a user
        • Data type
          • General data types
          • Unsupported data types
        • Create and manage tables
          • About tables
          • Create a table
          • Define an auto-increment column by using the SEQUENCE keyword
          • About types of column constraints
          • About table structure modification
          • About table clearing
          • About table dropping
          • Flash back a dropped table
          • About table privileges
        • Create and manage partition tables
          • About partitioned tables
          • Create a partitioned table
          • Manage a partitioned table
          • Create a subpartitioned table
          • Manage a subpartitioned table
          • Partition routing
          • Indexes on partitioned tables
          • Suggestions on using partitioned tables
        • Create and manage indexes
          • Drop an index
          • About indexes
          • Create an index
        • Create and manage views
          • About views
          • Create a view
          • Modify a view
          • Drop a view
        • Create and manage sequences
          • About sequences
          • Create a sequence
          • Modify a sequence
          • Delete a sequence
        • Create and manage synonyms
          • About synonyms
          • Create a synonym
          • Delete a synonym
        • Create and manage triggers
          • About triggers
          • Create a trigger
          • Modify a trigger
          • Delete a trigger
          • Enable or disable a trigger
      • Query
        • About queries
        • Single-table queries
        • Conditional queries
        • ORDER BY queries
        • GROUP BY queries
        • Use Row_Limiting_Clause in queries
        • Query data from multiple tables
          • About multi-table join queries
          • INNER JOIN queries
          • OUTER JOIN queries
          • Subqueries
        • Use operators and functions in a query
          • Use arithmetic operators in queries
          • Use numerical functions in queries
          • Use string concatenation operators in queries
          • Use string functions in queries
          • Use datetime functions in queries
          • Use type conversion functions in queries
          • Use aggregate functions in queries
          • Use NULL-related functions in queries
          • Use CASE functions in queries
          • Use the SELECT FOR UPDATE statement to lock query results
        • Execution plan
          • View execution plans of queries
          • Understand an execution plan
        • Use SQL hints in queries
        • About query timeout variables
      • DML statements and transactions
        • DML statement
          • About DML statements
          • About the INSERT statement
          • UPDATE statements
          • About the MERGE statement
          • About the DELETE statement
        • Transactions
          • About transaction control statements
          • Start a transaction
          • Transaction savepoints
          • Commit a transaction
          • Roll back a transaction
          • About transaction timeout
      • Common errors and solutions
        • Overview
        • Database connection error
        • About timeout
          • Idle session timeout
          • Transaction timeout errors
        • About user
          • Locked user
          • Incorrect user password
        • About object
          • Object already exists
          • Object does not exist
        • About constraint
          • Unique key conflict
          • Foreign key conflict
        • About sql
          • Data type inconsistency
  • Deploy
    • Overview
    • Deployment procedure
    • Preparations before deployment
      • Prepare servers
      • Configure servers
      • Prepare installation packages
    • HA solution for OceanBase clusters
    • Deploy through the CLI
      • Configure the deployment environment
        • Install oat-cli
        • Use oat-cli to configure the deployment environment
        • Configure the clock source
        • Upload installation packages
        • Configure host information
        • Check the environment before deployment
      • Deploy OCP
        • Deployment description
        • Generate a configuration file
        • Start deployment
        • Check after deployment
      • Deploy the OceanBase cluster
        • Deploy a single-replica OceanBase cluster
        • Deploy a three-replica OceanBase cluster
      • Deploy OBProxy
        • Deploy OBProxy through the CLI
      • Create an OceanBase tenant
        • View resources available for a business tenant
        • Create a tenant
        • Verify after deployment
      • Deploy OMS
        • Deployment description
        • Modify the configuration file
        • Start deployment
        • Check after deployment
      • Deploy ODC
        • Deployment description
        • Modify the configuration file
        • Start deployment
        • Check after deployment
  • Migrate
    • Overview
    • Migrate data by using SQL scripts
    • Migrate data by using MySQLDump
    • Migrate data by using DataX
    • Migrate data by using OUTFILE statements

Download PDF

Overview System architecture Compatibility with MySQL Overview SQL data types Built-in functions System views Limits Quick start with OceanBase Database Usage notes Basic SQL operations (MySQL mode) Basic SQL operations (Oracle mode) Connect Python applications to OceanBase Database Connect Java applications to OceanBase Database Connect C applications to OceanBase Database Connect Python applications to OceanBase Database Connect Java applications to OceanBase Database Connect C applications to OceanBase Database Experience operational OLAP Experience parallel import and data compression Experience the multitenancy feature Overview Deployment procedure Prepare servers Configure servers Prepare installation packages HA solution for OceanBase clustersOverview Migrate data by using SQL scripts Migrate data by using MySQLDumpMigrate data by using DataX Migrate data by using OUTFILE statements
OceanBase logo

The Unified Distributed Database for the AI Era.

Follow Us
Products
OceanBase CloudOceanBase EnterpriseOceanBase Community EditionOceanBase seekdb
Resources
DocsBlogLive DemosTraining & Certification
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. V4.0.0
iconOceanBase Database
SQL - V 4.0.0Enterprise Edition
SQL
KV
  • 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

Connect to OceanBase Database by using ODC

Last Updated:2023-07-24 09:52:12  Updated
share
What is on this page
Prerequisites
Procedure

folded

share

ODC allows you to connect to a MySQL tenant in OceanBase Database. This topic describes the prerequisites and procedure of connecting to OceanBase Database by using OBCI.

Prerequisites

You have obtained the web address of ODC or downloaded and installed an ODC client.

Procedure

  1. On the logon page of ODC, enter your registered account and password and click Log On.

  2. On the homepage of ODC, click Create Connection in the upper right corner of the Private Connection tab to create a private connection.

    1

    Note

    It takes some time to load the data when you run ODC the first time.

  3. On the page displayed after you click Create Connection, specify Connection Mode to MySQL. Then, specify Connection Name, Host Name, Port, Cluster, Tenant, Database Username, and Database Password, and click Save.

    If the settings are saved, the connection to the database is established.

    1

  4. The created connection is displayed in the Private Connection list on the homepage of ODC. Click the connection name or Open below the action option to open the connection.

    1

    Note

    The preceding page provides the following features:

    • Object management: A GUI is provided for you to create database objects. This makes the operations easier. In addition, you can edit the online table data that you are currently viewing.
    • Console: You can save and edit the content in a SQL window and reuse the scripts that you have saved. You can also format SQL scripts and display structured SQL statements. The SQL editor supports auto-complete when you write SQL statements to save your effort. You can edit and export the result set returned from SQL execution.
    • Toolkit: includes session management, recycle bin management, and import and export tools. Session management: The session management tool enables you to edit database sessions and global properties and terminate specified database sessions. Recycle bin management: The recycle bin management tool allows you to empty and restore database objects in the recycle bin. Import and export: The import and export tools enable you to import or export data of various formats in one or more tables.
    • SQL diagnostics: This feature allows you to diagnose SQL execution plans and view resource consumption during SQL execution. It can help you locate problems in SQL scripts.

Previous topic

Connect to an OceanBase Database tenant by using OBClient
Last

Next topic

OceanBase Connector/J
Next
What is on this page
Prerequisites
Procedure