Resolving the ORA-12541 Error: Your Roadmap to Listener Success

Encountering the ORA-12541 is usually a quick fix.

Verify Your Listener is started

First and foremost, ensure that your listener is started on the server by using the command:

lsnrctl status

Otherwise, start the listener up on the server:

lsnrctl start

Once the listener is up and running, retry your database connection. 

If you encounter any issues or need further assistance, feel free to reach out to our support team. We're here to help.