How to fix the Oracle error ORA-16406: primary and standby database software version mismatch?

In this post, you’ll learn more about the Oracle ErrorORA-16406: primary and standby database software version mismatch with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-16406: primary and standby database software version mismatch

Reason for the Error ORA-16406: primary and standby database software version mismatch

The primary and standby databases were not running compatible versions of Oracle server software.

How to fix the Error ORA-16406: primary and standby database software version mismatch ?

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

Install the correct Oracle server software and try again.