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Recover a Migration Job

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Relational Migrator can attempt to recover continuous (CDC) migration jobs that have failed within the preceding 24-hour period. The procedure for recovering a CDC migration job differs, depending on whether you're using the embedded or Kafka deployment mode. For details on each job type, see Migration Jobs.

About this Task

  • CDC migration job recovery depends on the type of deployment mode your using. The following table summarizes the modes.

    Mode
    Description
    Embedded Mode
    Migration jobs that are running on a local machine or a unattended server.
    Kafka Mode
    Migration jobs that are running with Kafka support.

  • Examples of embedded mode recoverable scenarios include:

    • Unexpected application failure

    • Operating system restarts

  • Examples of Kafka CDC migration job recoverable scenarios include:

    • Loss of individual brokers in Kafka cluster

    • Application-level issues resulting in failed health checks

Task

Click the tab to display the recovery procedure for each deployment mode.

For embedded mode recovery, the process to restart a migration job is manually triggered. This process requires restarting the Relational Migrator application.

1

Navigate to the Data Migration tab

2

Click Resume on the failed migration job

For the Kafka deployment mode recovery, the process to recover a migration job is automatic. Kafka health checks automatically attempt to resume CDC migration jobs after a failure of individual Kafka brokers for up to 24 hours.

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Pause & Resume with Kafka