Managing data migrations in Amazon DMS - Amazon Database Migration Service
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Managing data migrations in Amazon DMS

After you create a data migration, Amazon DMS doesn't automatically start migrating data. You start a data migration manually when needed.

Before you start a data migration, you can modify all settings of your data migration. After you start your data migration, you can't change the replication type. To use another replication type, create a new data migration.

To start a data migration

  1. Sign in to the Amazon Web Services Management Console and open the Amazon DMS console at https://console.aws.amazon.com/dms/v2/.

  2. Choose Migration projects. The Migration projects page opens.

  3. Choose your migration project. On the Data migrations tab, choose your data migration. The Summary page for your data migration opens.

  4. For Actions, choose Start.

    After this, Amazon DMS creates a serverless environment for your data migration. This process takes up to 15 minutes.

After you start a data migration, Amazon DMS sets its status to Starting. The next status that Amazon DMS uses for your data migration, depends on the type of replication that you choose in the data migration settings. For more information, see Migration statuses.

To modify a data migration

  1. Sign in to the Amazon Web Services Management Console and open the Amazon DMS console at https://console.aws.amazon.com/dms/v2/.

  2. Choose Migration projects. The Migration projects page opens.

  3. Choose your migration project. On the Data migrations tab, choose your data migration. The Summary page for your data migration opens.

  4. Choose Modify.

  5. Configure the settings for your data migration.

    Important

    If you have started a data migration, then you can't change the replication type.

  6. To view your data migration logs in Amazon CloudWatch, select the check box for Turn on CloudWatch logs.

  7. Choose Save changes.

After Amazon DMS starts a data migration, you can stop it. To do so, choose your data migration on the Data migrations tab. Next, for Actions, choose Stop.

After you stop a data migration, Amazon DMS sets its status to Stopping. Next, Amazon DMS sets the status of this data migration to Stopped. After Amazon DMS stops a data migration, you can modify, resume, restart, or delete your data migration.

To continue the data replication, choose the data migration that you stopped on the Data migrations tab. Next, for Actions, choose Resume processing.

To restart the data load, choose the data migration that you stopped on the Data migrations tab. Next, for Actions, choose Restart. Amazon DMS deletes all data from your target database and starts the data migration from scratch.

You can delete a data migration that you have stopped or that you haven't started. To delete a data migration, choose it on the Data migrations tab. Next, for Actions, choose Delete. To delete your migration project, stop and delete all data migrations.