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.查一查,server 上的listener service (ORACLETNSListner)有没有起来
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