RDS needs to be regularly maintained to guarantee overall instance health in production environment. You can set the maintenance period in the idle service hours based on service regularities to prevent the potential interruptions for production during maintenance. RDS performs regular maintenance within the period you have configured.

Background information

To guarantee the stability and efficiency of ApasaraDB RDS instances on Alibaba Cloud platform, the backend system performs a serial of maintenance tasks at irregular basis and as needed.

Before official maintenance, RDS sends text messages and emails to contacts configured by your Alibaba Cloud account.

To guarantee stability during maintenance process, instances enter the Instance being maintained state before the preset maintenance period on the day of maintenance. When an instance is in this state, normal data access to the database is not affected. However, apart from account management, database management, adding IP addresses to the whitelist, and other services associated with changes (such as common operations including upgrade, degrade, and restart) are unavailable on the console of this instance. Query services such as performance monitoring are available.

When the maintenance period preset by an instance begins, transient disconnection occurs once or twice on the instance during this period. You must make sure that the application program supports the reconnection policy. After transient disconnection, the instance restores to the normal state.


  1. Log on to the RDS console and select the target instance.
  2. Select Basic information in the menu.
  3. Behind Time segment in Configuration information, click Settings. The default maintenance period of the RDS is from 02:00 to 06:00.

  4. Select the maintenance period and click Save, as shown in the following figure.
    Note: Time segment is the time in Beijing.