TNS-12555 TNS-12560 TNS-00525 Insufficient privilege for operation Listener does not start

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Issue:

Unable to start listener as it throws error as below:


eul2006:oraSID 56> lsnrctl start LISTENER

LSNRCTL for Linux: Version 11.2.0.2.0 - Production on 07-FEB-2017 11:55:04
Copyright (c) 1991, 2010, Oracle.  All rights reserved.
Starting /oracleSID/SID/112_64/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 11.2.0.2.0 - Production System
parameter file is /oracleSID/SID/112_64/network/admin/listener.oraLog
messages written to /oracle/diag/tnslsnr/eul2006/listener/alert/log.xml

Error listening on: (ADDRESS=(PROTOCOL=IPC)(KEY=SID.WORLD))
TNS-12555: TNS:permission denied
TNS-12560: TNS:protocol adapter error
TNS-00525: Insufficient privilege for operation
Listener failed to startLinux Error: 1: Operation not permitted
ee the error message(s) above..."



Description:

The reason for this issue could be if listener was not stopped correctly means got killed at OS level or any other thing.

Solution.

Just remove the all listener socket files of that particular SID and try to start the Listener.

Usually the location of the listener socket files resides at  /var/tmp/.oracle
So go to  /var/tmp/.oracle
emove the socket file of the database whose listener needs to be started.

Best Wishes,
Nikhil Kumar.

In SAP app coonections to DB (RAC) get breaks multiple time ????

ORA-19625 ORA-17503 ORA15012 failure of archive backup via RMAN



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