PolarDB:Configure a maintenance window

Precautions

• Before formal maintenance, Alibaba Cloud sends SMS messages and emails to the contacts configured in your account. Check the messages in time.

• On the day of maintenance, to ensure stability throughout the maintenance process, the instance enters the Instance Maintenance state before the configured maintenance window starts. In this state, database access and query operations such as performance monitoring are not affected. However, change operations other than account management, database management, and IP address whitelist configuration, such as specification changes and restarts, are temporarily unavailable.

• After the maintenance window starts, the instance may experience one or two transient disconnections. Make sure that your application has an automatic reconnection mechanism. The instance automatically recovers to the normal state after the disconnections.

• After you configure a maintenance window, change tasks for O&M switch operations issued to the instance are executed within the specified window, allowing you to control when transient disconnections occur. We recommend that you configure the maintenance window during off-peak hours to minimize the potential impact on your business.

Procedure

1. Log on to the PolarDB Distributed Edition console.

2. In the top navigation bar, select the region where the instance is deployed.

3. On the Instances page, click the PolarDB-X 2.0 tab.

4. Find the instance and click Instance ID to go to the instance details page.

5. In the Basic Information section, click Modify next to Maintenance Window.

6. In the dialog box that appears, select a maintenance window for the instance and click OK.

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