How to fix the Oracle error TNS-02504: Parameter count retrieval failed?

In this post, you’ll learn more about the Oracle ErrorTNS-02504: Parameter count retrieval failed with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-02504: Parameter count retrieval failed

Reason for the Error TNS-02504: Parameter count retrieval failed

Cause: The native service layer was unable to determine the number of arguments given for a configuration parameter.

How to fix the Error TNS-02504: Parameter count retrieval failed ?

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

Action: If it is possible, enable tracing and attempt to reproduce the problem. In any event, contact Oracle Customer Support.