How to fix the Oracle error TNS-12618: TNS:versions are incompatible?

In this post, you’ll learn more about the Oracle ErrorTNS-12618: TNS:versions are incompatible with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-12618: TNS:versions are incompatible

Reason for the Error TNS-12618: TNS:versions are incompatible

Cause: The two machines are running incompatible versions of TNS.

How to fix the Error TNS-12618: TNS:versions are incompatible ?

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

Action: Check the version numbers, and upgrade the machine with the smaller one.