Case Study:
Scorfield working in support team and he need to check Listeners status when there is any disturbance and start/stop the listener at night when DBA’s are not available.
Solution:
Provide sudo access to user scorfield:
[root@stagedb3 ~]# vi /etc/sudoers
scorfield ALL=(oracle) NOPASSWD: /opt/oracle/product/11.2.0.1/bin/lsnrctl
Check Listener Status:
[scorfield@stagedb3 ~]$ sudo -i -u oracle /opt/oracle/product/11.2.0.1/bin/lsnrctl status
[sudo] password for scorfield:
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 08-AUG-2014 15:45:34
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.3.0 - Production
Start Date 08-AUG-2014 11:27:13
Uptime 0 days 4 hr. 18 min. 20 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /opt/oracle/product/11.2.0.3/network/admin/listener.ora
Listener Log File /opt/oracle/diag/tnslsnr/stagedb3/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=stagedb3.ipx.com)(PORT=1521)))
Services Summary...
Service "ipxtest.ipx.com" has 1 instance(s).
Instance "ipxtest", status READY, has 1 handler(s) for this service...
The command completed successfully
Stop Listener:
[scorfield@stagedb3 ~]$ sudo -i -u oracle /opt/oracle/product/11.2.0.1/bin/lsnrctl stop
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 08-AUG-2014 15:45:51
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
The command completed successfully
[scorfield@stagedb3 ~]$ sudo -i -u oracle /opt/oracle/product/11.2.0.1/bin/lsnrctl status
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 08-AUG-2014 15:46:05
Copyright (c) 1991, 2009, Oracle. All rights reserved.
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
Start Listener:
[scorfield@stagedb3 ~]$ sudo -i -u oracle /opt/oracle/product/11.2.0.1/bin/lsnrctl start
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 08-AUG-2014 15:46:21
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Starting /opt/oracle/product/11.2.0.3/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 11.2.0.3.0 - Production
System parameter file is /opt/oracle/product/11.2.0.3/network/admin/listener.ora
Log messages written to /opt/oracle/diag/tnslsnr/stagedb3/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=stagedb3.ipx.com)(PORT=1521)))
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.3.0 - Production
Start Date 08-AUG-2014 15:46:21
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /opt/oracle/product/11.2.0.3/network/admin/listener.ora
Listener Log File /opt/oracle/diag/tnslsnr/stagedb3/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=stagedb3.ipx.com)(PORT=1521)))
The listener supports no services
The command completed successfully
[scorfield@stagedb3 ~]$ sudo -i -u oracle /opt/oracle/product/11.2.0.1/bin/lsnrctl status
LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 08-AUG-2014 15:47:06
Copyright (c) 1991, 2009, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version 11.2.0.3.0 - Production
Start Date 08-AUG-2014 15:46:21
Uptime 0 days 0 hr. 0 min. 44 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /opt/oracle/product/11.2.0.3/network/admin/listener.ora
Listener Log File /opt/oracle/diag/tnslsnr/stagedb3/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=stagedb3.ipx.com)(PORT=1521)))
Services Summary...
Service "ipxtest.ipx.com" has 1 instance(s).
Instance "ipxtest", status READY, has 1 handler(s) for this service...
The command completed successfully