How to fix the Oracle error TNS-12643: Client received internal error from server?

In this post, you’ll learn more about the Oracle ErrorTNS-12643: Client received internal error from server with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-12643: Client received internal error from server

Reason for the Error TNS-12643: Client received internal error from server

Cause: The client process received an error from the server that indicated that an internal Oracle Net native services error had occurred.

How to fix the Error TNS-12643: Client received internal error from server ?

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

Action: Enable tracing on both processes and attempt to recreate the problem. If successful in recreating the problem, contact Oracle Customer Support.