How to fix the Oracle error ORA-16655: specified target standby database invalid?

In this post, you’ll learn more about the Oracle ErrorORA-16655: specified target standby database invalid with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-16655: specified target standby database invalid

Reason for the Error ORA-16655: specified target standby database invalid

The attempted command was not allowed because fast-start failover was enabled for this Data Guard configuration and the target standby database specified in the command differs from the standby database that was indicated by the FastStartFailoverTarget property associated with the current primary database.

How to fix the Error ORA-16655: specified target standby database invalid ?

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

Retry the attempted command by specifying the standby database that is indicated by the FastStartFailoverTarget property that is associated with the current primary database. Alternatively, fast-start failover may be disabled. Then retry the command using the originally specified target standby database.