Oracle : Ошибка ORA-12541

"TNS:no listener"
*Cause: The connection request could not be completed because the listener
is not running.
*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.

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