How to fix the Oracle error TNS-12556: TNS:no caller?

In this post, you’ll learn more about the Oracle ErrorTNS-12556: TNS:no caller with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-12556: TNS:no caller

Reason for the Error TNS-12556: TNS:no caller

Cause: TNS detected an incoming connect request but there was no caller.

How to fix the Error TNS-12556: TNS:no caller ?

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 reexecute the operation. If error persists, contact Oracle Customer Support.