When the 11gR2 clusterware is installed the listener and scan listeners are created with default names. Default listener is named "LISTENER" while the scan listeners have the following naming convention "LISTENER_SCAN#" (# scan listener number).
At times it may be required to setup the cluster with all non-default values thus requiring to rename the default listener names. This post uses the
11gR2 RAC installation with role separation (with
COST setup) and already has the
listener and scan listener default ports changed.
Changing the scan listener name (read end of the post for known issue)
1. Current scan listener configuration is as follows
cat /opt/app/11.2.0/grid/network/admin/listener.ora
LISTENER=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER)))) # line added by Agent
LISTENER_SCAN1=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1)))) # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER_SCAN1=ON # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER=ON # line added by Agent
WALLET_LOCATION =
(SOURCE =
(METHOD = FILE)
(METHOD_DATA =
(DIRECTORY = /opt/app/11.2.0/grid/network/admin/cost)
)
)
SECURE_REGISTER_LISTENER = (IPC,TCP)
SECURE_REGISTER_LISTENER_SCAN1 = (IPC,TCPS) <---- part of COST2. New scan listener cannot be added while there are scan listeners already configured.
srvctl config scan_listener
SCAN Listener LISTENER_SCAN1 exists. Port: TCP:9120/TCPS:1523
srvctl add scan_listener -l myscanlistener
PRCS-1028 : Single Client Access Name listeners already exist
3. To add a new scan listener remove the default scan listener first. When the new scan listener name is specified it's give only with the prefix of the scan listener name. There's no need to include the "SCAN", this will be added by the clusteware.
srvctl stop scan_listener
srvctl remove scan_listener
Remove scan listener? (y/[n]) y
srvctl add scan_listener -l myscanlistener -p TCP:9120/TCPS:1523
srvctl config scan_listener
SCAN Listener MYSCANLISTENER_SCAN1 exists. Port: TCP:9120/TCPS:1523
Listener.ora file won't be modified at this stage. Entries related to new scan listener name will be added when the scan listener is started. The old scan listener entries will still be there on the listener.ora and must be manually removed. Listener.ora files across all nodes will be updated when the scan listener is started. The COST related scan listener entries must be manually changed
cat /opt/app/11.2.0/grid/network/admin/listener.ora # before scan listener start
LISTENER=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER)))) # line added by Agent
LISTENER_SCAN1=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1)))) # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER_SCAN1=ON # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER=ON # line added by Agent
WALLET_LOCATION =
(SOURCE =
(METHOD = FILE)
(METHOD_DATA =
(DIRECTORY = /opt/app/11.2.0/grid/network/admin/cost)
)
)
SECURE_REGISTER_LISTENER = (IPC,TCP)
SECURE_REGISTER_LISTENER_SCAN1 = (IPC,TCPS)
srvctl start scan_listener
srvctl config scan_listener
SCAN Listener MYSCANLISTENER_SCAN1 exists. Port: TCP:9120/TCPS:1523
srvctl status scan_listener
SCAN Listener MYSCANLISTENER_SCAN1 is enabled
SCAN listener MYSCANLISTENER_SCAN1 is running on node rhel6m1
cat /opt/app/11.2.0/grid/network/admin/listener.ora # after scan listener start
MYSCANLISTENER_SCAN1=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=MYSCANLISTENER_SCAN1)))) # line added by Agent
LISTENER=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER)))) # line added by Agent
LISTENER_SCAN1=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_SCAN1)))) # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER_SCAN1=ON # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER=ON # line added by Agent
WALLET_LOCATION =
(SOURCE =
(METHOD = FILE)
(METHOD_DATA =
(DIRECTORY = /opt/app/11.2.0/grid/network/admin/cost)
)
)
SECURE_REGISTER_LISTENER = (IPC,TCP)
SECURE_REGISTER_MYSCANLISTENER_SCAN1 = (IPC,TCPS) <--- must be changed manually
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_MYSCANLISTENER_SCAN1=ON # line added by Agent4. Check the scan listener status
lsnrctl status MYSCANLISTENER_SCAN1
LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 24-JAN-2013 10:35:24
Copyright (c) 1991, 2011, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=MYSCANLISTENER_SCAN1)))
STATUS of the LISTENER
------------------------
Alias MYSCANLISTENER_SCAN1
Version TNSLSNR for Linux: Version 11.2.0.3.0 - Production
Start Date 24-JAN-2013 10:34:57
Uptime 0 days 0 hr. 0 min. 27 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /opt/app/11.2.0/grid/network/admin/listener.ora
Listener Log File /opt/app/11.2.0/grid/log/diag/tnslsnr/rhel6m1/myscanlistener_scan1/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=MYSCANLISTENER_SCAN1)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcps)(HOST=192.168.0.91)(PORT=1523)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.0.91)(PORT=9120)))
Services Summary...
Service "std11g2" has 1 instance(s).
Instance "std11g21", status READY, has 1 handler(s) for this service...
Service "std11g2XDB" has 1 instance(s).
Instance "std11g21", status READY, has 1 handler(s) for this service...
The command completed successfully
Changing the listener name
1. To add the new listener name on the same port as the current default listener name -s option must be used. This will skip the port check if not an error will be thrown.
srvctl status listener
Listener LISTENER is enabled
Listener LISTENER is running on node(s): rhel6m2,rhel6m1
srvctl add listener -l mylistener -p 9120 # without -s results in an error
PRCN-2061 : Failed to add listener ora.MYLISTENER.lsnr
PRCN-2065 : Port(s) 9120 are not available on the nodes given
PRCN-2067 : Port 9120 is not available across node(s) "rhel6m1-vip,rhel6m2-vip"
srvctl add listener -l mylistener -s -p 9120
srvctl config listener
Name: MYLISTENER
Network: 1, Owner: grid
Home: <CRS home>
End points: TCP:9120
Before removing the default listener modify the asm configuration with the new listener. If not asm configuration will continue to use the old listener name and will report
PRCA-1032: ASM Listener LISTENER Does Not Exist when srvctl config asm is run. It's important that this is done before the default listener is dropped if not the default listener need to be added and then new listener name is specified for the asm configuration. More on this is available on
1428284.1srvctl modify asm -l MYLISTENER
srvctl config asm
ASM home: /opt/app/11.2.0/grid
ASM listener: MYLISTENER
2. Stop the default listener and remove it from the configuration.
srvctl stop listener -l listener
srvctl remove listener -l listener
3. The new listener name related entries are not added to the listener.ora file until the listener is restarted and update will be done across all nodes of the cluster. Similar to scan listener the old entries will still remain the listener.ora file and must be manually removed. At the same time also edit the COST related listener entry.
cat /opt/app/11.2.0/grid/network/admin/listener.ora # before listener start
MYSCANLISTENER_SCAN1=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=MYSCANLISTENER_SCAN1)))) # line added by Agent
LISTENER=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER)))) # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER=ON # line added by Agent
WALLET_LOCATION =
(SOURCE =
(METHOD = FILE)
(METHOD_DATA =
(DIRECTORY = /opt/app/11.2.0/grid/network/admin/cost)
)
)
SECURE_REGISTER_LISTENER = (IPC,TCP)
SECURE_REGISTER_MYSCANLISTENER_SCAN1 = (IPC,TCPS)
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_MYSCANLISTENER_SCAN1=ON # line added by Agent
srvctl start listener -l mylistener
cat /opt/app/11.2.0/grid/network/admin/listener.ora # after listener start
MYLISTENER=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=MYLISTENER)))) # line added by Agent
MYSCANLISTENER_SCAN1=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=MYSCANLISTENER_SCAN1)))) # line added by Agent
LISTENER=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER)))) # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER=ON # line added by Agent
WALLET_LOCATION =
(SOURCE =
(METHOD = FILE)
(METHOD_DATA =
(DIRECTORY = /opt/app/11.2.0/grid/network/admin/cost)
)
)
SECURE_REGISTER_MYLISTENER = (IPC,TCP) <-- must be changed manually
SECURE_REGISTER_MYSCANLISTENER_SCAN1 = (IPC,TCPS)
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_MYSCANLISTENER_SCAN1=ON # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_MYLISTENER=ON # line added by Agent4. Listener status
lsnrctl status mylistener
LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 24-JAN-2013 11:57:18
Copyright (c) 1991, 2011, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=MYLISTENER)))
STATUS of the LISTENER
------------------------
Alias MYLISTENER
Version TNSLSNR for Linux: Version 11.2.0.3.0 - Production
Start Date 24-JAN-2013 11:51:49
Uptime 0 days 0 hr. 5 min. 29 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /opt/app/11.2.0/grid/network/admin/listener.ora
Listener Log File /opt/app/11.2.0/grid/log/diag/tnslsnr/rhel6m2/mylistener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=MYLISTENER)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.0.86)(PORT=9120)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.0.90)(PORT=9120)))
Services Summary...
Service "+ASM" has 1 instance(s).
Instance "+ASM2", status READY, has 1 handler(s) for this service...
Service "std11g2" has 1 instance(s).
Instance "std11g22", status READY, has 1 handler(s) for this service...
Service "std11g2XDB" has 1 instance(s).
Instance "std11g22", status READY, has 1 handler(s) for this service...
The command completed successfully
This concludes the changing of listener and scan listener names.
Known Issues
There were no known application related issues after this listener name change. Application was able to connect (JDBC) using the scan ip. However running cluvfy comp healthcheck resulted in following error
ERROR:
PRVG-0222 : Error establishing connection to database "std11g2". Verification will be skipped for this database.
PRCQ-1000 : An error occurred while establishing connection to database with user name "cvusys" and connect descriptor:
(DESCRIPTION = (LOAD_BALANCE=on) (ADDRESS = (PROTOCOL = TCP)(HOST = rhel6m-scan)(PORT = null)) (CONNECT_DATA =(SERVER = DEDICATED)(SERVICE_NAME = std11g2)))
IO Error: The Network Adapter could not establish the connection
It could be seen that it's trying to use the scan-ip but the port value is null. When the scan listener name is reverted back to the default value (LISTENER_SCAN1) then the cluvfy comp healthcheck continue without any errors. It cluvfy comp healthcheck depends on the default scan listener name. SR was raised regarding this. However Oracle couldn't confirm or deny that there are components depending on the scan listener name to be of the default format. Final reply for this SR was "
I think you are the first person did this change. Since you have followed the steps to change the SCAN Listener using srvctl then it is fine." With a phone call Oracle confirmed the steps are indeed correct and there are no documents available (yet) detailing how to change scan listener name. For the time being the RAC setup work fine and had no adverse effect other than the cluvfy issue.
Related Post
Changing Listener and SCAN Listener Port in 11gR2 RAC
Useful metalink notes
PRCA-1032: ASM Listener LISTENER Does Not Exist On 11.2 SIHA/OHAS Configuration.
[ID 1428284.1]
