How to fix the Oracle error ORA-12541: TNS:no listener?

In this post, you’ll learn more about the Oracle ErrorORA-12541: TNS:no listener with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12541: TNS:no listener

Reason for the Error ORA-12541: TNS:no listener

The connection request could not be completed because the listener is not running.

How to fix the Error ORA-12541: TNS:no listener ?

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

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.