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    Data Transmission Service:Convert synchronization instance to Serverless

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    Data Transmission Service:Convert synchronization instance to Serverless

    Last Updated:Jun 20, 2026

    This topic describes how to convert a standard synchronization instance of Data Transmission Service (DTS) to a Serverless instance.

    Prerequisites

    The synchronization instance that you want to convert must meet the following conditions:

    • The Database Type of the source database is not PostgreSQL, PolarDB for PostgreSQL, or PolarDB (Compatible with Oracle).

    • The instance meets the Serverless requirements for supported regions and usage limits.

    • The instance is in the Running or Paused state.

    • The billing method of the instance is pay-as-you-go.

      Note

      If the billing method of the instance is subscription, you can change it to pay-as-you-go. For more information, see Change the billing method.

    • Ensure that the source database contains the logs for the synchronization checkpoint. Otherwise, the instance may fail and become unrecoverable.

    Procedure

    1. Go to the data synchronization task list page in the destination region. You can do this in one of two ways.

      DTS console

      1. Log on to the DTS console.

      2. In the navigation pane on the left, click Data Synchronization.

      3. In the upper-left corner of the page, select the region where the synchronization instance is located.

      DMS console

      Note

      The actual steps may vary depending on the mode and layout of the DMS console. For more information, see Simple mode console and Customize DMS console layout and style.

      1. Log on to the DMS console.

      2. In the top menu bar, choose Data + AI > DTS (DTS) > Data Synchronization.

      3. To the right of Data Synchronization Tasks, select the region of the synchronization instance.

    2. Find the target instance.

      To find the target instance, you can filter by task name, instance ID, or database instance ID.

    3. In the Actions column, choose 更多设置 > Change to Serverless.

    4. In the Are you sure you want to change the instances used by the selected tasks to serverless instances? dialog box, adjust the Auto Scaling Configurations for Serverless Instance by setting the Lower Limit and Upper Limit.

      The dialog box notes that a Serverless task cannot be converted back to a standard task. Ensure this change meets your requirements before proceeding. The auto-scaling range for DUs is 1 to 32.

    5. Read and select Data Transmission Service (Pay-as-you-go) Service Terms.

    6. Click Pay.