以下转自张乐奕的ppt：

1. 本机的tnsnames.ora设置为：

INTERTOL =

(DESCRIPTION =

(ADDRESS_LIST =

(ADDRESS = (PROTOCOL = TCP)(HOST = 10.37.3.201)(PORT = 1521))

(ADDRESS = (PROTOCOL = TCP)(HOST = 10.37.3.202)(PORT = 1521))

(ADDRESS = (PROTOCOL = TCP)(HOST = 10.37.3.203)(PORT = 1521))

(ADDRESS = (PROTOCOL = TCP)(HOST = 10.37.3.204)(PORT = 1521))

(LOAD_BALANCE = yes)

)

(CONNECT_DATA =

(SERVICE_NAME = intertol)

(FAILOVER_MODE=

(TYPE=SELECT)

(METHOD=BASIC))

)

)