TNS-12555: TNS:permission denied TNS-12560: TNS:protocol adapter error TNS-00525: Insufficient privilege for operation IBM/AIX RISC System/6000 Error: 1: Not owner

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I was trying to start the Listener when …

Welcome to LSNRCTL, type “help” for information.

LSNRCTL> set curr LISTENER_DB
Current Listener is LISTENER_DB
LSNRCTL> start
Starting /oracle/PIQ/112_64/bin/tnslsnr: please wait…

TNSLSNR for IBM/AIX RISC System/6000: Version 11.2.0.3.0 – Production
System parameter file is /oracle/DB/112_64/network/admin/listener.ora
Log messages written to /oracle/diag/tnslsnr/host/listener_db/alert/log.xml
Error listening on: (ADDRESS=(PROTOCOL=IPC)(KEY=DB.WORLD))
TNS-12555: TNS:permission denied
TNS-12560: TNS:protocol adapter error
TNS-00525: Insufficient privilege for operation
IBM/AIX RISC System/6000 Error: 1: Not owner

Then, I check whether the directory /var/tmp/.oracle or /tmp/.oracle there are in the server. After that, I renamed the file (as user root) . When I tried to start the Listener again (as user oracle) was successful.

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