Relational Database ServiceRelational Database Service

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Updated at: Apr 02, 2022 GMT+08:00

Changing a Database Port


This section describes how to change the database port of a primary DB instance or a read replica. For primary/standby DB instances, changing the database port of the primary DB instance will cause the database port of the standby DB instance to also be changed.

If specific security group rules have been configured for a DB instance, you need to change the inbound rules of the security group to which the DB instance belongs after changing the database port.


  1. Log in to the management console.
  2. Click in the upper left corner and select a region and a project.
  3. Click in the upper left corner of the page and choose Database > Relational Database Service. The RDS console is displayed.
  4. On the Instance Management page, click the target DB instance or click first and then click the target read replica.
  5. In the Connection Information area on the Basic Information page, click in the Database Port field.

    RDS for PostgreSQL instances can use database ports 2100 to 9500.

    • To submit the change, click .
      • In the dialog box, click Yes.

        If you have enabled operation protection, click Send Code in the displayed Identity Verification dialog box and enter the obtained verification code. Then, click OK.

        Two-factor authentication improves the security of your account and cloud product. For details about how to enable operation protection, see the Identity and Access Management User Guide.

        1. If you change the database port of the primary DB instance, that of the standby DB instance will also be changed and both DB instances will be rebooted.
        2. If you change the database port of a read replica, the change will not affect other DB instances. Only the read replica will be rebooted.
        3. This process takes 1-5 minutes.
      • In the dialog box, click No to cancel the modification.
    • To cancel the change, click .

  6. View the results on the Basic Information page.

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