Oracle Error Message
ORA-12541: TNS:no listener
Reason for the Error
The connection request could not be completed because the listener is not running.
Solution
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.
