Oracle 11g on OL 6 - Listener not working.

I am trying to configure the listener for Oracle DB but get the result below when i run the lsnrctl status

TNS-12541: TNS: No listener
TNS-12560: TNS: Protocol adapter error
TNS-00511: No listener
Linux Error: 111: Connection refused

Firewall service is not running. Tnsping give me no listner.

please help.
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

johnsoneSenior Oracle DBACommented:
Is the process running?  Can you do a ps and see?

Depending on which version of ps is in your path, I believe this should work:

ps -fu oracle | grep lsnr | grep -v grep
GulfITAuthor Commented:
Seems that the process is starting and then stopping after a few seconds. I guess that seems to be the issue.

Please help.
what happens if you launch :
lsnrctl start
and then
lsnrctl status

can you also post the result of the following command (after having launched the command above) :
lsof -i:1521

also can you post your listener.ora file ?
Big Business Goals? Which KPIs Will Help You

The most successful MSPs rely on metrics – known as key performance indicators (KPIs) – for making informed decisions that help their businesses thrive, rather than just survive. This eBook provides an overview of the most important KPIs used by top MSPs.

GulfITAuthor Commented:
tnslsnr 12542 oracle    8u  IPv4  45565      0t0  TCP (LISTEN) "This exists for about 5 seconds after that goes off"


    (SID_DESC =
      (GLOBAL_DBNAME = fctestdb)
      (ORACLE_HOME = /oracle/app/product/11.2.0/db_1)
      (SID_NAME = fctestdb)

    (ADDRESS = (PROTOCOL = TCP)(HOST = = 1521))

ADR_BASE_LISTENER = /oracle/app
is correct address ?
can you try using localhost in place of this address just for testing ?
Also could you post your listener.log ?
Mark GeerlingsDatabase AdministratorCommented:
Is this a new Oracle install on a new server?  Or, was this working but now it has stopped working?
Is there possibly something else running on this server that uses the same TCP/IP port (1521)?

Did you try changing this port number to a different port number (1522, 1530, 1540, etc.) then re-starting the listener?  Of course if you change this, and that works, you will need to change any/all tnsnames.ora files on your network to this new port number also.
GulfITAuthor Commented:

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
GulfITAuthor Commented:
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Oracle Database

From novice to tech pro — start learning today.