How to fix the Oracle error NNC-00402: program interface de-initialization failed?

In this post, you’ll learn more about the Oracle ErrorNNC-00402: program interface de-initialization failed with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

NNC-00402: program interface de-initialization failed

Reason for the Error NNC-00402: program interface de-initialization failed

Cause: An internal error occurred while the name server program interface was being de-initialised by an internal function.

How to fix the Error NNC-00402: program interface de-initialization failed ?

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

Action: Not normally visible to the user. For further details, turn on tracing and re-execute the failing operation. If the error persists, contact Worldwide Customer Support.