How to fix the Oracle error ORA-16409: archive log switchover reference number mismatch?

In this post, you’ll learn more about the Oracle ErrorORA-16409: archive log switchover reference number mismatch with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-16409: archive log switchover reference number mismatch

Reason for the Error ORA-16409: archive log switchover reference number mismatch

The archive log switchover reference numbers of the primary and standby database did not match. Remote archival of redo log files is not allowed to incompatible standby database instances.

How to fix the Error ORA-16409: archive log switchover reference number mismatch ?

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

No action is required.