How to fix the Oracle error TNS-12640: Authentication adapter initialization failed?

In this post, you’ll learn more about the Oracle ErrorTNS-12640: Authentication adapter initialization failed with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-12640: Authentication adapter initialization failed

Reason for the Error TNS-12640: Authentication adapter initialization failed

Cause: The function specified in the authentication table entry for the service failed.

How to fix the Error TNS-12640: Authentication adapter initialization failed ?

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

Action: Enable tracing to determine the exact error.