HeatWave: Timeout in switchover of high availability DB systems

Previously, when you initiate a switchover in a high availability DB system, it waits until all existing transactions have completed before switching the primary instance. Long running transactions will delay the switchover.

Now, a newly created or upgraded high availability DB system has a 5-minute timeout in switchover operations. It waits for all existing transactions to complete or a maximum of 5 minutes before switching the primary instance. Any transactions that cannot complete within 5 minutes are rolled back.

For more information, see Switchover.