ORACLE - TAF - RAC Connect String

Here is the example for connect string :

1. Using SCAN - Oracle 11gR2 :
Service1=(DESCRIPTION =
    (LOAD_BALANCE = YES)
    (ADDRESS = (PROTOCOL = TCP)(HOST = cluster01-scan)(PORT = 1521))
     (CONNECT_DATA =  (SERVICE_NAME = ADHOC) ) )

2.Using VIPs - (Oracle 10g & 11g) :
(DESCRIPTION =
    (LOAD_BALANCE = YES)
    (FAILOVER = ON)
    (ADDRESS = (PROTOCOL = TCP)(HOST = testdb01-vip)(PORT = 1521))
    (ADDRESS = (PROTOCOL = TCP)(HOST = testdb02-vip)(PORT = 1521))
     (CONNECT_DATA =
      (SERVICE_NAME = ADHOC)
      (FAILOVER_MODE =  (type = select)   (method = basic) ) ) )

3.Thin JDBC :
url="jdbc:oracle:thin:@(DESCRIPTION= (LOAD_BALANCE = YES)
    (ADDRESS = (PROTOCOL = TCP)(HOST = cluster01-scan)(PORT = 1521))
     (CONNECT_DATA =  (SERVICE_NAME = ADHOC) ) )

4.Thick JDBC
url="jdbc:oracle:oci:@ADHOC"  (Add tnsnames.ora)


TAF Verifications :

select machine, failover_method, failover_type, failed_over, service_name, count(*)
from v$session  GROUP BY machine, failover_method, failover_type, failed_over, service_name