In this post, you’ll learn more about the Oracle ErrorTNS-12541: TNS:no listener with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
TNS-12541: TNS:no listener
Reason for the Error TNS-12541: TNS:no listener
Cause: The connection request could not be completed because the listener is not running.
How to fix the Error TNS-12541: TNS:no listener ?
You can fix this error in Oracle by following the below steps
Action: Ensure that the supplied destination address matches one of the addresses used by the listener – compare the TNSNAMES.ORA entry with the appropriate LISTENER.ORA file (or TNSNAV.ORA if the connection is to go by way of an Interchange). Start the listener on the remote machine.