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Connectors and Middleware

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Tools

OceanBase Cloud PlatformOceanBase Migration ServiceOceanBase Developer CenterOceanBase Migration AssessmentOceanBase Admin ToolOceanBase Loader and DumperOceanBase DeployerKubernetes operator for OceanBaseOceanBase Diagnostic Tool OceanBase Binlog Service
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OceanBase Migration Service

V4.0.0Community Edition
  • OMS Documentation
  • What's new
  • OMS Community Edition Introduction
    • What is OMS Community Edition?
    • Limits
    • Architecture
      • Overview
      • Hierarchical functional system
      • Basic components
    • Terms
  • Quick Start
    • Data migration process
    • Data synchronization process
  • Deploy OMS Community Edition
    • Deployment type
    • 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 and deployment
    • Check the deployment
    • Deploy a time-series database (Optional)
  • OMS Community Edition console
    • Log on to the OMS console
    • Overview
    • User center
      • Configure user information
      • Change your logon password
      • Log off
  • Data migration
    • Data migration overview
    • Migrate data from a MySQL database to OceanBase Community Edition
    • Migrate data from OceanBase Community Edition to a MySQL database
    • Migrate data within OceanBase Community Edition
    • Migrate data within OceanBase Community Edition in active-active disaster recovery scenarios
    • Migrate data from a TiDB database to OceanBase Community Edition
    • Migrate data from a PostgreSQL database to OceanBase Community Edition
    • Manage data migration projects
      • View details of a data migration project
      • View and modify migration objects
      • Use tags to manage data migration projects
      • Download and import the settings of migration objects
      • Start, pause, and resume a data migration project
      • Release and delete a data migration project
    • Schema migration mechanisms
    • Supported DDL operations in incremental migration and limits
      • Supported DDL operations in incremental migration from a MySQL database to OceanBase Community Edition and limits
      • Supported DDL operations in incremental migration from OceanBase Community Edition to a MySQL database and limits
      • Supported DDL operations in incremental migration between MySQL tenants of OceanBase Database
    • Configure matching rules for migration objects
  • Data synchronization
    • Data synchronization overview
    • Create a project to synchronize data from OceanBase Database Community Edition to a Kafka instance
    • Create a project to synchronize data from OceanBase Database Community Edition to a RocketMQ instance
    • Manage data synchronization projects
      • View details of a data synchronization project
      • View and modify synchronization objects
      • Use tags to manage data synchronization projects
      • Download and import the settings of synchronization objects
      • Start, pause, and resume a data synchronization project
      • Release and delete a data synchronization project
    • Data formats
  • 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
    • Manage data sources
      • View data source information
      • Copy a data source
      • Edit a data source
      • Delete a data source
    • 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 quotas
      • View server logs
    • Components
      • Store
        • Create a store
        • View details of a store
        • Update the configurations of a store
        • Start and pause a store
        • Destroy a store
      • Connector
        • View details of a connector
        • Start and pause a connector
        • Migrate a connector
        • Update the configurations of a connector
        • Batch O\&M
        • Delete a connector
      • JDBCWriter
        • View details of a JDBCWriter
        • Start and pause a JDBCWriter
        • Migrate a JDBCWriter
        • Update the configurations of a JDBCWriter
        • Batch O\&M
        • Delete a JDBCWriter
      • Checker
        • View the information about a checker
        • Start and pause a checker
        • Rerun and reverify a checker
        • Update the configurations of a checker
        • Delete a checker
    • O&M tickets
      • View details of an O\&M ticket
      • Skip a ticket or sub-ticket
      • Retry a ticket or sub-ticket
  • System management
    • Permission Management
      • Overview
      • Manage users
      • Manage departments
    • Alert center
      • View project alerts
      • View system alerts
      • Manage alert settings
    • Associate with OCP
    • System parameters
      • Modify system parameters
      • Modify HA configurations
  • OMS Community Edition O&M
    • Manage OMS services
    • OMS logs
    • O&M operations for the Store component
    • Store parameters
      • Parameters of a MySQL store
      • Parameters of an OceanBase store
    • O&M operations for the Supervisor component
    • Parameters of the Supervisor component
    • O&M operations for the Connector component
    • Connector parameters
      • Parameters of a destination RocketMQ instance
      • Parameters of a DataflowSink instance
      • Parameters in the destination Kafka instance
      • Parameters of the source database in full migration
      • Parameters of the source database in incremental data synchronization
      • Parameters for intermediate-layer synchronization
    • Checker parameters
    • JDBCWriter parameters
    • Parameters of the CM component
  • Reference Guide
    • API Reference
      • Obtain the status of a migration project
      • Obtain the status of a synchronization project
    • 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
  • Upgrade Guide
    • Overview
    • Upgrade OMS in single-node deployment mode
    • Upgrade OMS in multi-node deployment mode
    • FAQ
  • FAQ
    • General O&M
      • How do I modify the resource quotas of an OMS container?
      • How do I troubleshoot the OMS server down issue?
    • Project 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
    • Data migration
      • Full migration
        • FAQ about 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?
          • What do I do if the destination table does not exist?
      • Incremental synchronization
        • How do I skip DDL statements?
        • How do I update the configurations of a JDBCWriter?
        • How do I start or stop a JDBCWriter?
        • How do I update whitelists and blacklists?
        • What are the application scope and limits of ETL?
    • Installation and deployment
      • How do I download an image?
      • How do I upgrade Store?

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  1. Documentation Center
  2. OceanBase Migration Service
  3. V4.0.0

How do I query log files of the Checker component of OMS?

Last Updated:2026-09-04 08:14:02

  1. Identify the server where the OMS Docker container resides based on the IP address in the component ID.

    Generally, the ID of a component is in the format of IP-PORT:INNER ID:SEQ, for example, xxx.xxx.xxx.1-9000:90322:0000000111. For more information about how to query component IDs, see How do I query the ID of a checker.

  2. Run the following command to log on to the Docker container of OMS:

    # Obtain the name of the OMS Docker container.
    sudo docker ps
    # Assume that the name of the OMS Docker container is oms. Enter the Docker container.
    sudo docker exec -it oms bash
    
  3. The log files of the Checker component of OMS are located in the /home/ds/run/{component ID}/logs directory, which contains the task.log and error.log log files.

    • task.log: contains general logs.

    • error.log: contains error logs.

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