How to fix the Oracle error ORA-16075: standby database destination mismatch?

In this post, you’ll learn more about the Oracle ErrorORA-16075: standby database destination mismatch with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-16075: standby database destination mismatch

Reason for the Error ORA-16075: standby database destination mismatch

Another instance had access to a standby database destination that this instance did not. If the initialization parameter LOG_ARCHIVE_CONFIG does not define a DG_CONFIG, this may be due to a standby database becoming unavailable recently.

How to fix the Error ORA-16075: standby database destination mismatch ?

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

Ensure that at each instance the set of standby databases referred to by LOG_ARCHIVE_DEST_n initialization parameters is the same and define a DG_CONFIG at each instance to identify those databases explicitly.