How to configure different listener for each database in 11gR2 RAC

Question

Hi Friends,
Current Prod Setup :
11gR2 (11.2..0.2) RAC on RHEL 5.5 with 3 SCAN Listeners on default 1521 port.
Having 4 databases which are using SCAN-IP and listening on default port only.
As per policy, we have to create separate listeners (on different port) for each database.
like,
DB1 - 1522
DB2 - 1523
DB3 - 1524
DB4 - 1525
Even If I configure 4 listeners using NETCA, how my failover & load balancing will happen using SCAN & Newly Created Listeners ???
Thanks in advance..
Regards,
Manish

Answer 1

Hi,
I tried on 11gR2 TEST RAC Server to have different listener with different port (1529) for SCAN & Node Listener & tested failover, load-balancing which was successful.
[oracle@ravish5 admin]$ cat listener.ora
LISTENER_A=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_A)))) # line added by Agent
ENABLE_GLOBAL_DYNAMIC_ENDPOINT_LISTENER_A=ON # line added by Agent
[oracle@ravish5 admin]$ ps -ef | grep lsnr
oracle 1985 1 0 00:46 ? 00:00:00 /11g_crs/11.2.0.2/product/home/bin/tnslsnr LISTENER -inherit
oracle 1988 1 0 00:46 ? 00:00:00 /11g_database/11.2.0.2/product/home_1/bin/tnslsnr LISTENER_A -inherit
oracle 2928 1 0 01:00 ? 00:00:00 /11g_crs/11.2.0.2/product/home/bin/tnslsnr LISTENER_SCAN1 -inherit
[oracle@ravish5 admin]$ lsnrctl status LISTENER_A
LSNRCTL for Linux: Version 11.2.0.2.0 - Production on 02-MAY-2012 03:19:35
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=LISTENER_A)))
STATUS of the LISTENER
Alias LISTENER_A
Version TNSLSNR for Linux: Version 11.2.0.2.0 - Production
Start Date 02-MAY-2012 00:46:42
Uptime 0 days 2 hr. 32 min. 54 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /11g_database/11.2.0.2/product/home_1/network/admin/listener.ora
Listener Log File /11g_database/11.2.0.2/diag/tnslsnr/ravish5/listener_a/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=LISTENER_A)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.3.5)(PORT=1529)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=192.168.3.16)(PORT=1529)))
Services Summary...
Service "TEST" has 1 instance(s).
Instance "TEST2", status READY, has 1 handler(s) for this service...
Service "TESTXDB" has 1 instance(s).
Instance "TEST2", status READY, has 1 handler(s) for this service...
Service "srvc_test.clover.com" has 1 instance(s).
Instance "TEST2", status READY, has 1 handler(s) for this service...
The command completed successfully
SQL> show parameter listen
NAME TYPE VALUE
listener_networks string
local_listener string (DESCRIPTION=(ADDRESS_LIST=(AD
DRESS=(PROTOCOL=TCP)(HOST=192.
168.3.16)(PORT=1529))))
remote_listener string ravish-scan:1529
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options
[oracle@ravish5 admin]$ srvctl config scan_listener
SCAN Listener LISTENER_SCAN1 exists. Port: TCP:1521,1529
[oracle@ravish5 admin]$ srvctl config scan
SCAN name: ravish-scan, Network: 1/192.168.3.0/255.255.255.0/eth0
SCAN VIP name: scan1, IP: /ravish-scan.clover.com/192.168.3.22
[oracle@ravish5 admin]$ srvctl config listener
Name: LISTENER
Network: 1, Owner: oracle
Home: <CRS home>
End points: TCP:1521
Name: LISTENER_A
Network: 1, Owner: oracle
Home: /11g_database/11.2.0.2/product/home_1
End points: TCP:1529
[oracle@ravish5 admin]$ srvctl config service -d TEST -s srvc_test.clover.com
Service name: srvc_test.clover.com
Service is enabled
Server pool: TEST_srvc_test.clover.com
Cardinality: 2
Disconnect: false
Service role: PRIMARY
Management policy: AUTOMATIC
DTP transaction: false
AQ HA notifications: true
Failover type: SELECT
Failover method: BASIC
TAF failover retries: 0
TAF failover delay: 0
Connection Load Balancing Goal: LONG
Runtime Load Balancing Goal: NONE
TAF policy specification: BASIC
Edition:
Preferred instances: TEST1,TEST2
Available instances:
TEST_NEW =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = ravish-scan.clover.com)(PORT = 1529))
(LOAD_BALANCE = yes)
(FAILOVER = ON)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = srvc_test.clover.com)
(FAILOVER_MODE =
(TYPE = SELECT)
(METHOD = BASIC)
Actually different ports for different databases are required to have separation of duties. Once Firewall enabled betwen Client & DB Server only privileged users would have access to particular database.
Regards,
Manish