How to fix the Oracle error ORA-16819: fast-start failover observer not started?

In this post, you’ll learn more about the Oracle ErrorORA-16819: fast-start failover observer not started with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-16819: fast-start failover observer not started

Reason for the Error ORA-16819: fast-start failover observer not started

The observer for fast-start failover was not started. As a result, fast-start failover could not happen in the case of a primary database failure.

How to fix the Error ORA-16819: fast-start failover observer not started ?

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

Start the fast-start failover observer by using, for example, the DGMGRL START OBSERVER command.