Updated on 2024-05-31 GMT+08:00

Changing the Maintenance Window


The maintenance window is 02:00–06:00 by default and you can change it as required. To prevent service interruptions, you are advised to set the maintenance window to off-peak hours.


  • Before maintenance is performed, RDS will send SMS messages and emails to the contact person that has been set in the Huawei account.
  • During the maintenance window, the DB instance will be intermittently disconnected for one or two times. Ensure that your applications support automatic reconnection.
  • If you set the time for changing your instance class to the maintenance window, the change will fail when the instance is frozen or any of the following operations is being performed during this time:

    Changing the instance class, automatically backing up the instance, creating a manual backup, scaling up or down storage, changing the storage type, changing the billing mode from pay-per-use to yearly/monthly, stopping the instance, rebooting the instance, creating a read replica, changing the database port, binding an EIP, unbinding an EIP, changing the floating IP address, modifying instance parameters, changing the instance type from single to primary/standby, resetting the administrator password, establishing a DR relationship, upgrading the major version, upgrading the minor version, and switching between primary and standby instances.


  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 Databases > Relational Database Service.
  4. On the Instances page, click the target DB instance. In the DB Information area on the Basic Information page, click Change next to the Maintenance Window field.

    Figure 1 Changing the maintenance window

  5. In the displayed dialog box, select a maintenance window and select an interval and a maintenance window, and click Yes.

    Figure 2 Changing the maintenance window

    Changing the maintenance window does not affect the execution time of the scheduled tasks in the original maintenance period.