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Linux: TNS Listener not starting

Hi,

Installed Oracle XE in RH 5.6 x64 using 'oracle-xe-11.2.0-1.0.x86_64.rpm.zip'.

After installation, I was able to connect to db using local sqlplus.
However, when tried to establish a connection from a remote host, connection failed.
Further looking into the oracle installed server, I found that LISTENER is not running and 1521 port is not listening.

Tried to start the listener using 'lsnrctl start' command, below is the output:

LSNRCTL for Linux: Version 11.2.0.2.0 - Production on 12-JUL-2012 20:09:30

Copyright (c) 1991, 2011, Oracle. All rights reserved.

Starting /u01/app/oracle/product/11.2.0/xe/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 11.2.0.2.0 - Production
System parameter file is /u01/app/oracle/product/11.2.0/xe/network/admin/listener.ora
Log messages written to /u01/app/oracle/product/11.2.0/xe/log/diag/tnslsnr/gopar01-VM47438/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC_FOR_XE)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=gopar01-VM47438.ca.com)(PORT=1521)))

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.2.0 - Production
Start Date 12-JUL-2012 20:09:31
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Default Service XE
Listener Parameter File /u01/app/oracle/product/11.2.0/xe/network/admin/listener.ora
Listener Log File /u01/app/oracle/product/11.2.0/xe/log/diag/tnslsnr/gopar01-VM47438/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC_FOR_XE)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=gopar01-VM47438.ca.com)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully

However, listener is not running. Please find below the listener.ora file:

# listener.ora Network Configuration File:

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /u01/app/oracle/product/11.2.0/xe)
(PROGRAM = extproc)
)
)

LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC_FOR_XE))
(ADDRESS = (PROTOCOL = TCP)(HOST = gopar01-VM47438)(PORT = 1521))
)
)

DEFAULT_SERVICE_LISTENER = (XE)

Appreciate your help in this regard. I want to start the listener service and use oracle from a remote server.

Regards,
Aravind G

slightwv (䄆 Netminder)

The status shows the listener is actually running. The XE database isn't registered with it.

Log in locally to the XE database with sqlplus and do:
alter system register;

Then do the: lsnrctl status and see if XE is being listened for.

aravindgopaluni

ASKER

Hi,

Thanks for your inputs. However, I am seeing the below error with lsnctl status after executing 'alter system register' in SQLPLUS.

-------------------------------------------
LSNRCTL for Linux: Version 11.2.0.2.0 - Production on 12-JUL-2012 20:49:26

Copyright (c) 1991, 2011, Oracle. All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE)))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
Linux Error: 111: Connection refused
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=gopar01-VM47438)(PORT=1521)))
TNS-12541: TNS:no listener
TNS-12560: TNS:protocol adapter error
TNS-00511: No listener
Linux Error: 111: Connection refused
----------------------------------

Please advise.

Regards,
Aravind G

slightwv (䄆 Netminder)

Ok, now the listener isn't started.

What happens with a lsnrctl start?

The the register of XE.

aravindgopaluni

ASKER

Hi,

Lsnectl start gives the same message as in my first post :(

vincenteam

Hi,

Could you move listener.ora file:

As oracle user:

lsnrctl stop
mv /u01/app/oracle/product/11.2.0/xe/network/admin/listener.ora /u01/app/oracle/product/11.2.0/xe/network/admin/listener.ora.old
lsnrctl start

Open in new window

Since V10.1, no listener.ora is required to start the listener; if you are willing to accept standard default values (like port=1521).

Best regards.

Vincent.

aravindgopaluni

ASKER

Hi Vincent,

Thanks for your inputs. I renamed the listener.ora file and started listener, still getting the same error

bash$lsnrctl stop

Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
TNS-12541: TNS:no listener
 TNS-12560: TNS:protocol adapter error
  TNS-00511: No listener
   Linux Error: 111: Connection refused

bash$mv listener.ora listener.ora.old
bash$lsnrctl start
Starting /u01/app/oracle/product/11.2.0/xe/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 11.2.0.2.0 - Production
Log messages written to /u01/app/oracle/product/11.2.0/xe/log/diag/tnslsnr/gopar01-VM47438/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=gopar01-VM47438.ca.com)(PORT=1521)))

Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.2.0 - Production
Start Date                13-JUL-2012 08:48:56
Uptime                    0 days 0 hr. 0 min. 0 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Log File         /u01/app/oracle/product/11.2.0/xe/log/diag/tnslsnr/gopar01-VM47438/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=gopar01-VM47438.ca.com)(PORT=1521)))
The listener supports no services
The command completed successfully

bash$ lsnrctl status

Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
TNS-12541: TNS:no listener
 TNS-12560: TNS:protocol adapter error
  TNS-00511: No listener
   Linux Error: 111: Connection refused

Open in new window

Regards,
Aravind G

vincenteam

Hi, can you post content of /etc/hosts ? and $ORACLE_HOME/network/admin/sqlnet.ora if exist ?

Best regards.

Vincent.

aravindgopaluni

ASKER

Vincent,

I cant locate the file '$ORACLE_HOME/network/admin/sqlnet.ora' in my server.
However, below is how my /etc/hosts file look like...

#127.0.0.1 <hostname>.<domain>.com <hostname> localhost.localdomain localhost
#::1 <hostname>.<domain>.com <hostname> localhost6.localdomain6 localhost6
<IP> <hostname>.<domain>.com <hostname>

-Aravind G

ASKER CERTIFIED SOLUTION

vincenteam

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aravindgopaluni

ASKER

Vincent,

Thank you, it worked. I uncommented the line in /etc/hosts file and reinstalled OracleXE.

After this reinstall, listener started successfully.

Appreciate your help

Regard,
Aravind G