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 Developer Center

V4.3.3

  • Overview
    • What is ODC?
    • Features
    • Architecture
    • Limitations
    • ODC console
  • Quick Start
    • Client ODC
      • Overview
      • Install Client ODC
      • Use Client ODC
    • Web ODC
      • Overview
      • Deploy Web ODC
      • Use Web ODC
  • Data Source Management
    • Create a data source
    • Data sources and project collaboration
    • Database O&M
      • Session management
      • Global variable management
      • Recycle bin management
  • SQL Development
    • SQL editing and execution
    • Perform PL compilation and debugging
    • Use the command-line window
    • Edit and export the result set of an SQL statement
    • Execution analysis
    • Generate test data
    • Database objects
      • Table objects
        • Overview
        • Create a table
      • View objects
        • Overview
        • Create a view
        • Manage views
      • Function objects
        • Overview
        • Create a function
        • Manage functions
      • Stored procedure objects
        • Overview
        • Create a stored procedure
        • Manage stored procedures
      • Sequence objects
        • Overview
        • Create a sequence
        • Manage sequences
      • Package objects
        • Overview
        • Create a program package
        • Manage program packages
      • Trigger objects
        • Overview
        • Create a trigger
        • Manage triggers
      • Type objects
        • Overview
        • Create a type
        • Manage types
      • Synonym objects
        • Overview
        • Create a synonym
        • Manage synonyms
  • Import and Export
    • Import schemas and data
    • Export schemas and data
  • Database Change Management
    • User Permission Management
      • Users and roles
      • Automatic authorization
    • Project collaboration management
    • Risk levels, risk identification rules, and approval processes
    • SQL check specifications
    • SQL window specification
    • Database change management
    • Logical database change management
    • Batch database change management
    • Online schema changes
    • Synchronize shadow tables
    • Schema comparison
  • Data Lifecycle Management
    • Archive data
    • Clean up data
    • Partitioning Plan Management
      • Manage partitioning plans
      • Set partitioning strategies
      • Examples
    • SQL plan task
  • Data Desensitization and Auditing
    • Desensitize data
    • Operation records
  • Notification Management
    • Overview
    • View notification records
    • Manage Notification Channel
      • Create a notification channel
      • View, edit, and delete a notification channel
      • Configure a custom channel
    • Manage notification rules
  • System Integration
    • Login integration
    • Approval integration
    • SQL approval integration
    • Bastion host integration
  • Deployment Guide
    • Deployment overview
    • Preparations before deployment
    • Deploy ODC in single-node mode
    • Deploy ODC in high-availability mode
    • Deployment verification
  • Upgrade Guide
    • Upgrade Overview
    • Preparations before upgrade
    • Update single-node ODC
    • Update high-avaliability ODC
    • Upgrade verification
    • Rollback after upgrade failed
  • Troubleshooting
    • ODC troubleshooting process
    • Collect Message
      • View the runtime environment and version information
      • View web ODC logs
      • View client ODC logs
      • View end-to-end ODC-related logs
      • View ODC MetaDB data
      • Query the index status in OceanBase Database V4.x
      • Query the index status in OceanBase Database V1.4.x to V3.2.x
      • Collect JVM runtime information
      • Use tcpdump to capture packets
    • FAQ
      • Installation of client ODC
      • Web ODC deployment and startup
      • Connection Information
      • Command-line window
      • DDL statement display
  • Release Note
    • V4.3
      • ODC V4.3.3
      • ODC V4.3.2
      • ODC V4.3.1
      • ODC V4.3.0
    • V4.2
      • ODC V4.2.4
      • ODC V4.2.3
      • ODC V4.2.2
      • ODC V4.2.1
      • ODC V4.2.0
    • V4.1
      • ODC V4.1.3
      • ODC V4.1.2
      • ODC V4.1.1
      • ODC V4.1.0
    • V4.0
      • ODC V4.0.2
      • ODC V4.0.0
    • V3.4
      • ODC V3.4.0
    • V3.3
      • ODC V3.3.3
      • ODC V3.3.2
      • ODC V3.3.1
      • ODC V3.3.0
    • V3.2
      • ODC V3.2.3
      • ODC V3.2.2
      • ODC V3.2.1
      • ODC V3.2.0

Download PDF

What is ODC? Features Architecture Limitations ODC console Overview Install Client ODC Use Client ODC Overview Deploy Web ODC Use Web ODC Create a data source Data sources and project collaboration Session management Global variable management Recycle bin management SQL editing and execution Perform PL compilation and debugging Use the command-line window Edit and export the result set of an SQL statement Execution analysis Generate test data Import schemas and data Export schemas and data Users and roles Automatic authorization Project collaboration management Risk levels, risk identification rules, and approval processes SQL check specifications SQL window specification Database change management Logical database change management Batch database change management Online schema changes Synchronize shadow tables Schema comparison Archive data Clean up data Manage partitioning plans Set partitioning strategies Examples SQL plan task Desensitize data Operation records Overview View notification records Create a notification channel View, edit, and delete a notification channel Configure a custom channel Manage notification rules Login integration Approval integration SQL approval integration Bastion host integration Deployment overview Preparations before deployment Deploy ODC in single-node mode Deploy ODC in high-availability mode Deployment verification Upgrade Overview Preparations before upgrade Update single-node ODC Update high-avaliability ODC Upgrade verification Rollback after upgrade failed ODC troubleshooting process View the runtime environment and version information View web ODC logs View client ODC logs View end-to-end ODC-related logs View ODC MetaDB data Query the index status in OceanBase Database V4.x Query the index status in OceanBase Database V1.4.x to V3.2.x Collect JVM runtime information Use tcpdump to capture packets Installation of client ODC Web ODC deployment and startup Connection Information Command-line window DDL statement display ODC V4.3.3 ODC V4.3.2 ODC V4.3.1 ODC V4.3.0 ODC V4.2.4 ODC V4.2.3 ODC V4.2.2 ODC V4.2.1 ODC V4.2.0 ODC V4.1.3 ODC V4.1.2 ODC V4.1.1 ODC V4.1.0 ODC V4.0.2 ODC V4.0.0 ODC V3.4.0 ODC V3.3.3 ODC V3.3.2 ODC V3.3.1 ODC V3.3.0
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 Developer Center
  3. V4.3.3
iconOceanBase Developer Center
V 4.3.3
  • V 4.4.2
  • V 4.4.1
  • V 4.4.0
  • V 4.3.4
  • V 4.3.3
  • V 4.3.2
  • V 4.3.1
  • V 4.3.0
  • V 4.2.4
  • V 4.2.3
  • V 4.2.2
  • V 4.2.1
  • V 4.2.0
  • V 4.1.3 and earlier

View ODC MetaDB data

Last Updated:2026-04-13 07:30:36  Updated
share
What is on this page
share

This topic describes how to view the MetaDB data of OceanBase Developer Center (ODC).

Notice

MetaDB data may corrupt when being operated directly. Therefore, handle MetaDB data with caution.

The metadata of client ODC is maintained in the embedded h2database.

  1. Go to the metadata path of client ODC.

    • Windows system: %USERPROFILE%\AppData\Roaming\odc\

      cd %USERPROFILE%\AppData\Roaming\odc\
      
    • macOS: /Users/{user}/Library/Application Support/odc

      cd ~/"Library/Application Support/odc"
      
  2. View data files.

    ls odc*.db
    
    # You can view the following two files, namely, the data files of the h2database database:
    #odc2.0.mv.db    odc2.0.trace.db
    

You can use a tool such as a MySQL client or OBClient to connect to ODC MetaDB.

  1. In the ODC Docker container, run the env | grep DATABASE_ command to view the connection information about the web ODC MetaDB.

    Here is the sample result:

    # View the environment variables in the ODC Docker container.
    $env | grep DATABASE_
    DATABASE_NAME=***
    DATABASE_PORT=***
    DATABASE_HOST=***
    DATABASE_PASSWORD=***
    DATABASE_USERNAME=***
    
  2. In the ODC Docker container, run the following command to connect to ODC MetaDB.

    # Connect to ODC MetaDB by using OBClient
    /opt/odc/obclient/bin/obclient -h${DATABASE_HOST} -P${DATABASE_PORT} -u${DATABASE_USERNAME} -p${DATABASE_PASSWORD} -D${DATABASE_NAME}
    

Previous topic

View end-to-end ODC-related logs
Last

Next topic

Query the index status in OceanBase Database V4.x
Next