Error on RAC failover process

Question

Dear All,
i am using oracle 10.2.04 RAC configured database and below is my TNS entry.
ORCL =
(DESCRIPTION_LIST =
(LOAD_BALANCE = OFF)
(FAILOVER = ON)
(DESCRIPTION =
(ADDRESS_LIST =
(LOAD_BALANCE = ON)
(FAILOVER = ON)
(ADDRESS = (PROTOCOL = TCP)(HOST = host01.com)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = host02.com)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = host03.com)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = ORCL)
(FAILOVER_MODE =
(TYPE = SESSION)
(METHOD = BASIC)
(RETRIES = 120)
(DELAY = 5)
Following are the TNS set up for three conection pools to db throught the web logic
jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=host01.com)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=ORCL)))
jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=host02.com)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=ORCL)))
jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=host03.com)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=ORCL)))
today we have faced connectivity issue in one server and failover not worked. due to this we have to restart the manage servers.
can you kindly review and let me know any issues in my configuration? if we create 3 separate connection pools will that ignore the RAC fail over?
Also please tell me the correct way to setup this.
Thanks,

Answer 1

Hi,
I didn't understand something, you wrote your connection pool strings, but you have 3. How does your application server open these connections? Which string does it use?
JDBC thin client does not use TNS configuration, so if a specific connection from the pool got connected to host2 and this node crashed. How do you expect it to failover if it doesn't have any information other than host2?