How to fix the Oracle error ORA-15244: new compatibility setting less than current [string]?

In this post, you’ll learn more about the Oracle ErrorORA-15244: new compatibility setting less than current [string] with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-15244: new compatibility setting less than current [string]

Reason for the Error ORA-15244: new compatibility setting less than current [string]

The compatibility setting was invalid. The compatibility setting can only be advanced.

How to fix the Error ORA-15244: new compatibility setting less than current [string] ?

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

Check the version number.