TNS-12555: TNS:permission denied

Hi,

Sometimes You can get “TNS-12555: TNS:permission denied ” error.

 

Details of error are as follows.

TNS-12555: TNS:permission denied
Cause: User has insufficient privileges to perform the requested operation.
Action: Acquire necessary privileges and try again.

 

 

Check the whether the .oracle directory exists under /var/tmp, if it doesn’t exist, create and grant it as follows.
mkdir /var/tmp/.oracle
chmod 01777 /var/tmp/.oracle
chown root /var/tmp/.oracle
chgrp root /var/tmp/.oracle

 

then add it and try to start Listener again.

[oracle@msdbadm01 ~]$ lsnrctl start LISTENER

Check listener status as follows, it is listening the Database and its service as follows.

 

[oracle@msdbadm01 ~]$ lsnrctl status

LSNRCTL for Linux: Version 18.0.0.0.0 - Production on 28-APR-2020 15:44:29

Copyright (c) 1991, 2019, Oracle. All rights reserved.

Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 18.0.0.0.0 - Production
Start Date 25-MAR-2020 20:34:20
Uptime 33 days 19 hr. 10 min. 8 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/grid/network/admin/listener.ora
Listener Log File /u01/app/grid/diag/tnslsnr/vfxidb01/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.63.34)(PORT=1521)))
Services Summary...
Service "+APX" has 1 instance(s).
Instance "+APX1", status READY, has 1 handler(s) for this service...
Service "+ASM" has 1 instance(s).
Instance "+ASM1", status READY, has 1 handler(s) for this service...
Service "+ASM_DATA" has 1 instance(s).
Instance "+ASM1", status READY, has 1 handler(s) for this service...
Service "+ASM_RECO" has 1 instance(s).
Instance "+ASM1", status READY, has 1 handler(s) for this service...
Service "MSDB" has 1 instance(s).
Instance "MSDB1", status READY, has 1 handler(s) for this service...
Service "MSDBXDB" has 1 instance(s).
Instance "MSDB1", status READY, has 1 handler(s) for this service...

[oracle@msdbadm01 ~]$

 

Or Clear the /var/tmp/.oracle (Linux or Solaris) or (on AIX), /tmp/.oracle directory and start from fresh:

Stop all listeners

Remove the /var/tmp/.oracle or /tmp/.oracle directory, e.g. run the following from the root account as follows.
rm -rf /var/tmp/.oracle

Check the listener(s) configuration contains unique keys specified for each IPC endpoint and each listener

Start the listener(s) from the normal Oracle OS user.

Clearing the /var/tmp/.oracle or /tmp/.oracle directory will force the listeners to recreate the socket files from fresh, each with its own correct ownership.

 

 

Do you want to learn more details about RMAN, then read the following articles.

https://ittutorial.org/rman-backup-restore-and-recovery-tutorials-for-beginners-in-the-oracle-database/

 

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About Mehmet Salih Deveci

I am Founder of SysDBASoft IT and IT Tutorial and Certified Expert about Oracle & SQL Server database, Goldengate, Exadata Machine, Oracle Database Appliance administrator with 10+years experience.I have OCA, OCP, OCE RAC Expert Certificates I have worked 100+ Banking, Insurance, Finance, Telco and etc. clients as a Consultant, Insource or Outsource.I have done 200+ Operations in this clients such as Exadata Installation & PoC & Migration & Upgrade, Oracle & SQL Server Database Upgrade, Oracle RAC Installation, SQL Server AlwaysOn Installation, Database Migration, Disaster Recovery, Backup Restore, Performance Tuning, Periodic Healthchecks.I have done 2000+ Table replication with Goldengate or SQL Server Replication tool for DWH Databases in many clients.If you need Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS Consultancy and Training you can send my email adress mehmetsalih.deveci@outlook.com.-                                                                                                                                                                                                                                                 -Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS ve linux Danışmanlık ve Eğitim için  mehmetsalih.deveci@outlook.com a mail atabilirsiniz.

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