How to fix the Oracle error ORA-12204: TNS:received data refused from an application?

In this post, you’ll learn more about the Oracle ErrorORA-12204: TNS:received data refused from an application with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12204: TNS:received data refused from an application

Reason for the Error ORA-12204: TNS:received data refused from an application

The application using Connection Manager refused the connection at the listener.

How to fix the Error ORA-12204: TNS:received data refused from an application ?

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

Make sure that the application listener at the destination is functioning correctly. If it is and the problem persists, contact Worldwide Customer Support.