How to fix the Oracle error ORA-16659: failover operation in progress?

In this post, you’ll learn more about the Oracle ErrorORA-16659: failover operation in progress with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-16659: failover operation in progress

Reason for the Error ORA-16659: failover operation in progress

A primary database that restarted contacted a standby database that is being failed over to.

How to fix the Error ORA-16659: failover operation in progress ?

You can fix this error in Oracle by following the below steps

Shut down the primary database and wait for failover to complete on the standby database. Once failover is complete, restart the old primary database. If the failover occurred due to fast-start failover, restarting the primary database after failover is complete allows it to be automatically reinstated as a standby database to the new primary database.