This topic describes precautions you must consider before you use AnalyticDB for PostgreSQL.

You do not need to conduct basic database O&M operations such as ensuring high availability and installing security patches for purchased AnalyticDB for PostgreSQL instances. However, you must pay attention to the following situations:

  • Instance upgrade: Instances are read-only while they are being upgraded. Transient disconnections may occur after the upgrade is completed for up to 30 seconds. Make sure that your application is configured with automatic reconnection policies by using mechanisms such as the connection pool.
  • Switchover: The coordinator and compute nodes each adopts a primary/secondary high availability architecture. When an error occurs in the primary node, the service is automatically switched to the secondary node within 30 seconds. A transient disconnection of up to 30 seconds may occur during the switchover. Make sure that your application is configured with automatic reconnection policies by using mechanisms such as the connection pool.