Application load balancing

Question

Dear all,
We have installed 10g RAC on Solaris on which 2 heavy applications are running.. Now th lead is sayin to divert the applications. i.e.. application1 should run on proddb01 and application2 on proddb02. How we can do this ?.. If am not wrong, we have the followin entries in tnsnames.ora
PROD2 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = PRODdb02)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = PRODPROD)
(INSTANCE_NAME = PROD2)
PROD1 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = PRODdb01)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = PRODPROD)
(INSTANCE_NAME = PROD1)
So if we make sure application1 is using PROD1 and application2 is using PROD2 then, the above requirement can be achieved ?
2) For failover, is it necessary that we should have TAF configured(failover_mode.type) in tnsnames or the following connection string should work
PRODPROD =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = PRODdb01)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = PRODdb02)(PORT = 1521))
(LOAD_BALANCE = yes)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = PRODPROD)
Guys,please guide ?
Am new to RAC
Thanks
kai

Answer 1

Use services:
srvctl add service -d prodprod -s prod1 -r "prod1" -a "prod2" -P BASIC
srvctl add service -d prodprod -s prod2 -r "prod2" -a "prod1" -P BASIC
srvctl start service -d prodprod -s prod1
srvctl start service -d prodprod -s prod2
Your tns entries for each of the services should contain both listeners and no hard-coded instance name in connect data.
PROD1 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = PRODdb01)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = PRODdb02)(PORT = 1521))
(LOAD_BALANCE = yes)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = PROD1)
(FAILOVER_MODE =
(TYPE = SELECT)
(METHOD = BASIC)
(RETRIES = 180)
(DELAY = 5)
PROD2 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = PRODdb01)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = PRODdb02)(PORT = 1521))
(LOAD_BALANCE = yes)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = PROD2)
(FAILOVER_MODE =
(TYPE = SELECT)
(METHOD = BASIC)
(RETRIES = 180)
(DELAY = 5)
You can also use dbca to create both services and tns entries.