Configuring TNS in TAF preconnect client mode
Advantages: Instantly switch connections,
Disadvantages: double the number of connections, and resources are changed for efficiency
RACDB_ZN1 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.201)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME =
RACDB
)
(SERVER = DEDICATED)
(FAILOVER_MODE =
(TYPE = session)
(METHOD =
preconnect
)
(BACKUP =
RACDB_ZN2
)
)
)
)
RACDB_ZN2 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.202)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME =
RACDB
)
(SERVER = DEDICATED)
(FAILOVER_MODE =
(TYPE = session)
(METHOD =
preconnect
)
(BACKUP =
RACDB_ZN1
)
)
)
)