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    Data Management:Modify a backup source

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    Data Management:Modify a backup source

    Last Updated:Aug 27, 2026

    This topic describes how to modify a backup source for a backup schedule if the source no longer meets your requirements.

    Use cases

    • The original database is migrated or decommissioned, requiring you to switch to a new database for backups to ensure data continuity and a smooth business transition.

    • After the testing phase is complete, you must switch the backup source to a production database to ensure it matches the production environment, guaranteeing the integrity and availability of production data backups.

    • If the account or password for the backup source is incorrect, or the database account has insufficient permissions, you must modify the account credentials or adjust the permissions.

    • If there are changes to the databases or tables in the backup source (for example, objects are added, deleted, or modified), you must reconfigure the backup objects.

    Prerequisites

    You have created and configured a backup schedule.

    Note

    • The backup method for the backup schedule is logical backup.

    • The database account for the backup source must have permissions to back up and restore data. For more information, see Account permissions.

    Procedure

    1. Log on to DMS.

    2. In the top navigation bar, choose Security and disaster recovery (DBS) > Data Disaster Recovery (DBS) > Backup Plan.

      Note

      If you use the DMS console in simple mode, move the pointer over the 2023-01-28_15-57-17.png icon in the upper-left corner of the DMS console and choose All Features > Security and disaster recovery (DBS) > Data Disaster Recovery (DBS) > Backup Plan.

    3. In the Actions column of the backup schedule, click Manage to open the Configure Task page.

    4. In the Basic Information section, click Edit Backup Source. For details on configuring the backup source for different databases, see Configure a backup schedule and restore data.

    5. Configure the backup source information. After the connection test passes, click Next.

      The backup source information includes parameters such as Backup Method (for example, logical backup), Database Location (for example, RDS instance), Instance Region, RDS Instance ID, Database Account, Password, and Connection Method (Unencrypted Connection or SSL-encrypted Connection). After entering the information, select the data cross-border compliance commitment checkbox and click Test Connection.

    6. Configure the backup objects and click Save.

      • To add a new source database, select the database in the Available section and click the image icon.

      • To delete a selected database, select the database in the Selected section and click the image icon.

      Backing up an entire database also backs up information such as permissions and stored procedures. If your OSS account has overdue payments, settle them promptly to avoid data loss.

    7. After the precheck passes, click Start Task. This applies the new backup configuration.

      Note

      • After you click Start Task, if an incremental backup task is running for the original backup schedule, the system marks that task as complete. A new incremental backup task is then scheduled and initiated with the new database account and password.

      • If no full backup task is currently running, the system immediately initiates a full backup task. This action may impact your source database. We recommend modifying the configuration during off-peak hours.

      • If a full backup task is already running, it continues with its original configuration. The new configuration takes effect the next time a full backup task is scheduled or initiated.

    Related operations

    To modify the database backup source or backup objects by using an API, see ModifyBackupSourceEndpoint or ModifyBackupObjects.