In this post, you’ll learn more about the Oracle ErrorORA-00331: 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-00331: log version string incompatible with ORACLE version string
Reason for the Error ORA-00331: log version string incompatible with ORACLE version string
The log was written by incompatible version of Oracle.
How to fix the Error ORA-00331: 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.