How to fix the error ORA-00373: online log version string incompatible with ORACLE version string?

In this post, you’ll learn more about the Oracle ErrorORA-00373: online log version string incompatible with ORACLE version string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-00373: online log version string incompatible with ORACLE version string

Reason for the Error ORA-00373: online log version string incompatible with ORACLE version string

The online log was written by incompatible version of Oracle. Can occur when the log file was created by either a new or older version of Oracle.

How to fix the Error ORA-00373: online log version string incompatible with ORACLE version string ?

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

Recover the database with the compatible software, shut it down cleanly, then restart with current software.