How to fix the Oracle error TNS-12672: Database logon failure?

In this post, you’ll learn more about the Oracle ErrorTNS-12672: Database logon failure with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-12672: Database logon failure

Reason for the Error TNS-12672: Database logon failure

Cause: The authentication service adapter in use encountered an error it attempted to validate the logon attempt of a user.

How to fix the Error TNS-12672: Database logon failure ?

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

Action: Enable tracing to determine the exact error encountered by the adapter.