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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
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Mission-Critical Transactions

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Real-time Analytics

Active Geo-redundancy

Database Consolidation

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OceanBase Migration Service

V4.2.12Community Edition

  • OMS Documentation
  • What's New
  • OMS Community Edition Introduction
    • What is OMS Community Edition?
    • Terms
    • OMS Community Edition HA
    • Architecture
      • Overview
      • Hierarchical functional system
      • Basic components
    • Limitations
  • Quick Start
    • Data migration process
    • Data synchronization process
  • Deploy OMS Community Edition
    • Deployment modes
    • System and network requirements
    • Memory and disk requirements
    • Prepare the environment
    • Deploy by using Docker
      • Deploy OMS Community Edition on a single node
      • Deploy OMS Community Edition on multiple nodes in a single region
      • Deploy OMS Community Edition on multiple nodes in multiple regions
      • Scale out deployment
      • Check the deployment
      • Deploy a time-series database (Optional)
    • Deploy by using k8s
      • Single-node deployment
      • Single-region multi-node deployment
      • Multi-region multi-node deployment
      • Scale out
    • Integrate the OIDC protocol into OMS Community Edition to implement SSO
  • OMS Community Edition console
    • Log in to the console of OMS Community Edition
    • Overview
    • User center
      • Configure user information
      • Change your logon password
      • Log off
  • Data migration
    • Overview
    • Migrate data from a MySQL database to OceanBase Database Community Edition
    • Migrate data from HBase to OBKV
    • Migrate incremental data from OBKV to HBase
    • Migrate data from a Milvus database to OceanBase Database Community Edition
    • Migrate data from a Redis database to an OBKV-Redis database
    • Migrate data between tenants of OceanBase Database Community Edition
    • Migrate data in active-active disaster recovery scenarios
    • Migrate data from a TiDB database to OceanBase Database Community Edition
    • Migrate data from a PostgreSQL database to OceanBase Database Community Edition
    • Migrate data from Hive to OceanBase Database Community Edition
    • Migrate data from an ElasticSearch database to OceanBase Database Community Edition
    • Migrate data from OceanBase Database Community Edition to an ElasticSearch database
    • Migrate data from a MongoDB database to OceanBase Database Community Edition
    • Migrate data from a StarRocks database to OceanBase Database Community Edition
    • Migrate data from a Qdrant database to OceanBase Database Community Edition
    • Migrate data from a Doris database to OceanBase Database Community Edition
    • Manage data migration tasks
      • View details of a data migration task
      • Change the name of a data migration task
      • View and modify migration objects
      • Manage computing platforms
      • Use tags to manage data migration tasks
      • Perform batch operations on data migration tasks
      • Download and import settings of migration objects
      • Start and pause a data migration task
      • Release and delete a data migration task
    • Features
      • DML filtering
      • DDL synchronization
      • Configure matching rules for migration objects
      • Wildcard rules
      • Rename a database table
      • Use SQL conditions to filter data
      • Create and update a heartbeat table
      • Schema migration mechanisms
      • Schema migration operations
      • Set an incremental synchronization timestamp
      • Direct load
    • Supported DDL operations in incremental migration and limits
      • DDL synchronization from MySQL database to OceanBase Community Edition
        • Overview of DDL synchronization from a MySQL database to a MySQL-compatible tenant of OceanBase Database
        • CREATE TABLE
          • Create a table
          • Create a column
          • Create an index or a constraint
          • Create partitions
        • Data type conversion
        • ALTER TABLE
          • Modify a table
          • Operations on columns
          • Operations on constraints and indexes
          • Operations on partitions
        • TRUNCATE TABLE
        • RENAME TABLE
        • DROP TABLE
        • CREATE INDEX
        • DROP INDEX
        • DDL incompatibilities between MySQL database and OceanBase Community Edition
          • Overview
          • Incompatibilities of the CREATE TABLE statement
            • Incompatibilities of CREATE TABLE
            • Column types that are supported to create indexes or constraints
          • Incompatibilities of the ALTER TABLE statement
            • Incompatibilities of ALTER TABLE
            • Change the type of a constrained column
            • Change the type of an unconstrained column
            • Change the length of a constrained column
            • Change the length of an unconstrained column
            • Delete a constrained column
          • Incompatibilities of DROP INDEX operations
      • Supported DDL operations in incremental migration between MySQL-compatible tenants of OceanBase Database
      • Synchronize DDL operations from a PostgreSQL database to OceanBase Database
  • Data synchronization
    • Data synchronization overview
    • Create a task to synchronize data from OceanBase Database Community Edition to a Kafka instance
    • Create a task to synchronize data from OceanBase Database Community Edition to a RocketMQ instance
    • Manage data synchronization tasks
      • View details of a data synchronization task
      • Change the name of a data synchronization task
      • View and modify synchronization objects
      • Use tags to manage data synchronization tasks
      • Perform batch operations on data synchronization tasks
      • Download and import the settings of synchronization objects
      • Start and pause a data synchronization task
      • Release and delete a data synchronization task
    • Features
      • DML filtering
      • DDL synchronization
      • Configure matching rules for synchronization objects
      • Rename a topic
      • Use SQL conditions to filter data
      • Column filtering
      • Data format description
  • Create and manage data sources
    • Create data sources
      • Create an OceanBase-CE data source
      • Create a MySQL data source
      • Create a TiDB data source
      • Create a Kafka data source
      • Create a RocketMQ data source
      • Create a PostgreSQL data source
      • Create an HBase data source
      • Create a Qdrant data source
      • Create a Milvus data source
      • Create a Redis data source
      • Create a Hive data source
      • Create an ElasticSearch data source
      • Create a MongoDB data source
      • Create a StarRocks data source
      • Create a Doris data source
    • Manage data sources
      • View data source information
      • Copy a data source
      • Edit a data source
      • Delete a data source
      • Cache system views
    • Create a database user
    • User privileges
    • Enable binlogs for the MySQL database
  • OPS & Monitoring
    • O&M overview
    • Go to the overview page
    • Server
      • View server information
      • Update the quota
      • View server logs
      • Delete a server
    • Components
      • Store
        • Create a Store component
        • View details of a Store component
        • Update the configurations of a Store component
        • Start and pause a Store component
        • Delete a Store component
      • Incr-Sync
        • View details of an Incr-Sync component
        • Start and pause an Incr-Sync component
        • Migrate an Incr-Sync component
        • Update the configurations of an Incr-Sync component
        • Batch O&M
        • Delete an Incr-Sync component
      • Full-Import
        • View details of a Full-Import component
        • Pause a Full-Import component
        • Rerun and resume a Full-Import component
        • Update the configurations of a Full-Import component
        • Delete a Full-Import component
      • Full-Verification
        • View details of a Full-Verification component
        • Pause a Full-Verification component
        • Rerun and resume a Full-Verification component
        • Update the configurations of a Full-Verification component
        • Delete a Full-Verification component
      • Component parameters
        • Coordinator
        • Condition
        • Source Plugin
          • Overview
          • StoreSource
          • DataFlowSource
          • LogProxySource
          • KafkaSource (TiDB)
          • HBaseSource
          • HiveSource
          • ElasticSearchSource
          • MongoDBSource
        • Sink Plugin
          • Overview
          • JDBC-Sink
          • KafkaSink
          • DatahubSink
          • RocketMQSink
          • HBaseSink
          • HiveSink
        • Store parameters
          • Parameters of a MySQL store
          • Parameters of an OceanBase store
        • Parameters of the CM component
        • Parameters of the Supervisor component
        • Parameters of the Full-Verification component
    • O&M Task
      • View O&M tasks
      • Skip a task or subtask
      • Retry a task or subtask
  • System management
    • Permission Management
      • Overview
      • Manage users
      • Manage departments
    • Alert center
      • View task alerts
      • View system alerts
      • Manage alert settings
    • Associate with OCP clusters
    • System parameters
      • Modify system parameters
      • Modify HA configurations
    • SSO management
      • Overview
      • Create an SSO integration
      • Enable or disable an SSO integration
      • Edit an SSO integration
      • Delete an SSO integration
  • OMS Community Edition O&M
    • Manage OMS services
    • OMS logs
    • Component O&M
      • O&M operations for the Supervisor component
      • CLI-based O&M for the Connector component
      • O&M operations for the Store component
    • Component tuning
      • Full/Incremental data migration performance optimization
    • Set throttling
  • Reference Guide
    • API Reference
      • Overview
      • CreateProject
      • StartProject
      • StopProject
      • ResumeProject
      • ReleaseProject
      • DeleteProject
      • ListProjects
      • DescribeProject
      • DescribeProjectSteps
      • DescribeProjectStepMetric
      • DescribeProjectProgress
      • DescribeProjectComponents
      • ListProjectFullVerifyResult
      • StartProjectsByLabel
      • StopProjectsByLabel
      • CreateMysqlDataSource
      • CreateMySQLMasterSlaveDataSource
      • CreateOceanBaseDataSource
      • CreateKafkaDataSource
      • ListDataSource
      • DeleteDataSource
      • CreateLabel
      • ListAllLabels
      • ListFullVerifyInconsistenciesResult
      • ListFullVerifyCorrectionsResult
      • UpdateStore
      • UpdateFullImport
      • UpdateIncrSync
      • UpdateFullVerification
      • UploadFile
      • SubmitPreCheck
      • GetPreCheckResult
      • RetryPreCheck
    • OMS error codes
    • Alert Reference
      • oms_host_down
      • oms_host_down_migrate_resource
      • oms_host_threshold
      • oms_migration_failed
      • oms_migration_delay
      • oms_sync_failed
      • oms_sync_status_inconsistent
      • oms_sync_delay
    • Telemetry parameters
    • Create a trigger
  • Upgrade Guide
    • Overview
    • Upgrade in single-node deployment mode
    • Upgrade in multi-node deployment mode
    • Hot upgrade OMS Community Edition
    • Upgrade the CDC library
    • FAQ
  • FAQ
    • General O&M
      • How do I modify the resource quotas of an OMS container?
      • Clear files in the Store component
      • How do I troubleshoot the OMS server down issue?
      • Deploy InfluxDB for OMS
      • Increase the disk space of the OMS host
    • Task diagnostics
      • What do I do when a store does not have data of the timestamp requested by the downstream?
      • What do I do when OceanBase Store failed to access an OceanBase cluster through RPC?
    • OPS & monitoring
      • What are the alert rules?
    • Data synchronization
      • FAQ about synchronization to a message queue
        • What are the strategies for ensuring the message order in incremental data synchronization to Kafka
      • Performance troubleshooting and tuning for data synchronization from OceanBase Community Edition to Kafka
    • Data migration
      • Full migration
        • How do I query the ID of a checker?
        • How do I query log files of the Checker component of OMS?
        • How do I query the verification result files of the Checker component of OMS?
        • Garbled characters in the Latin1 character set
        • What do I do if the target table does not exist?
        • What can I do when the full migration failed due to LOB fields?
        • What do I do if garbled characters cannot be written into OceanBase Database V3.1.2?
      • Incremental synchronization
        • How do I skip DDL statements?
        • How do I update whitelists and blacklists?
        • What are the application scope and limits of ETL?
    • Logon and password
      • What do I do if my logon password is locked?
    • Installation and deployment
      • How do I upgrade Store?
      • What do I do when the "Failed to fetch" error is reported?
      • Change port numbers for components
      • Switching between the primary and standby OMS MetaDBs

Download PDF

OMS Documentation What's New What is OMS Community Edition? Terms OMS Community Edition HA Overview Hierarchical functional system Basic components Limitations Data migration process Data synchronization process Deployment modes System and network requirements Memory and disk requirements Prepare the environment Deploy OMS Community Edition on a single node Deploy OMS Community Edition on multiple nodes in a single region Deploy OMS Community Edition on multiple nodes in multiple regions Scale out deployment Check the deployment Deploy a time-series database (Optional) Single-node deployment Single-region multi-node deployment Multi-region multi-node deployment Scale out Integrate the OIDC protocol into OMS Community Edition to implement SSO Log in to the console of OMS Community Edition Overview Configure user information Change your logon password Log off Overview Migrate data from a MySQL database to OceanBase Database Community Edition Migrate data from HBase to OBKV Migrate incremental data from OBKV to HBase Migrate data from a Milvus database to OceanBase Database Community Edition Migrate data from a Redis database to an OBKV-Redis database Migrate data between tenants of OceanBase Database Community Edition Migrate data in active-active disaster recovery scenarios Migrate data from a TiDB database to OceanBase Database Community Edition Migrate data from a PostgreSQL database to OceanBase Database Community Edition Migrate data from Hive to OceanBase Database Community Edition Migrate data from an ElasticSearch database to OceanBase Database Community Edition Migrate data from OceanBase Database Community Edition to an ElasticSearch database Migrate data from a MongoDB database to OceanBase Database Community Edition Migrate data from a StarRocks database to OceanBase Database Community Edition Migrate data from a Qdrant database to OceanBase Database Community Edition Migrate data from a Doris database to OceanBase Database Community Edition View details of a data migration task Change the name of a data migration task View and modify migration objects Manage computing platforms Use tags to manage data migration tasks Perform batch operations on data migration tasks Download and import settings of migration objects Start and pause a data migration task Release and delete a data migration task DML filtering DDL synchronization Configure matching rules for migration objects Wildcard rules Rename a database table Use SQL conditions to filter data Create and update a heartbeat table Schema migration mechanisms Schema migration operations Set an incremental synchronization timestamp Direct load Supported DDL operations in incremental migration between MySQL-compatible tenants of OceanBase Database Synchronize DDL operations from a PostgreSQL database to OceanBase Database Data synchronization overview Create a task to synchronize data from OceanBase Database Community Edition to a Kafka instance Create a task to synchronize data from OceanBase Database Community Edition to a RocketMQ instance View details of a data synchronization task Change the name of a data synchronization task View and modify synchronization objects Use tags to manage data synchronization tasks Perform batch operations on data synchronization tasks Download and import the settings of synchronization objects Start and pause a data synchronization task Release and delete a data synchronization task DML filtering DDL synchronization Configure matching rules for synchronization objects Rename a topic Use SQL conditions to filter data Column filtering Data format description Create an OceanBase-CE data source Create a MySQL data source Create a TiDB data source Create a Kafka data source Create a RocketMQ data source Create a PostgreSQL data source Create an HBase data source Create a Qdrant data source Create a Milvus data source Create a Redis data source Create a Hive data source Create an ElasticSearch data source
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  5. V4.2.12
iconOceanBase Migration Service
V 4.2.12Community Edition
Enterprise Edition
  • V 4.3.2
  • V 4.3.1
  • V 4.3.0
  • V 4.2.5
  • V 4.2.4
  • V 4.2.3
  • V 4.0.2
  • V 3.4.0
Community Edition
  • V 4.2.13
  • V 4.2.12
  • V 4.2.11
  • V 4.2.10
  • V 4.2.9
  • V 4.2.8
  • V 4.2.7
  • V 4.2.6
  • V 4.2.5
  • V 4.2.4
  • V 4.2.3
  • V 4.2.1
  • V 4.2.0
  • V 4.0.0
  • V 3.3.1

What's New

Last Updated：2026-04-22 09:51:04  Updated
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Usability improvements

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This topic describes the features of OceanBase Migration Service (OMS) Community Edition V4.2.12-CE.

Notice

Currently, you can upgrade OMS Community Edition V4.2.0-CE ~ V4.2.11-CE to V4.2.12-CE. You cannot upgrade OMS Community Edition V4.2.0-CE or earlier versions to V4.2.12-CE.

New features

  • Added support for incremental synchronization for OceanBase Database Community Edition V4.5.0.

  • Added support for full data migration from an Apache Doris database to OceanBase Database Community Edition.

  • Added support for data migration from a MySQL RocksDB engine.

  • Added support for synchronization of data from OceanBase Database Community Edition to Kafka V3.x and V4.x.

  • Optimized full migration performance.

    • Optimized support for time field sharding during full migration of data from MySQL and TiDB databases.

    • Optimized full migration performance for QDrant databases.

  • Added support for CentOS V8 and Rocky Linux.

  • Added openAPIs: Create a Kafka data source, delete a data source, upload a file, create a pre-check task, view the details of a pre-check task, and retry a pre-check task.

  • Added support for the OceanBase ADD HASH PARTITION syntax during incremental synchronization.

  • Added support for migration of PostgreSQL UUID and VECTOR types to OceanBase Database Community Edition.

    • Added support for migration of PostgreSQL UUID type data to OceanBase Database Community Edition.

    • Added support for incremental DDL operations for PostgreSQL VECTOR type data.

  • Added support for expanding nested fields in Elasticsearch data to OceanBase Database.

  • Added support for migration of Milvus array, JSON, and sparse matrix SPARSE_FLOAT_VECTOR type data to OceanBase Database Community Edition.

Usability improvements

  • Optimized TLS configuration for MongoDB data sources.

  • Added support for protocol pre-check for TiCDC during incremental data synchronization from a TiDB database to OceanBase Database Community Edition.

  • Added support for GUI-based configuration for third-party login.

  • Added support for periodic cleanup of heartbeat data.

  • Optimized load balancing threshold configuration for OMS multi-node scenarios.

  • Added support for migration of one non-empty DB and multiple empty DBs in wildcard scenarios.

  • Added support for displaying the task information of the component being deleted in the confirmation window.

  • Added support for deletion of OMS failed nodes.

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