1、客户端hosts文件配置:
10.19.65.167 sdwgrac1-vip
10.19.65.169 sdwgrac2-vip
注:unix平台是/etc/hosts;windows平台是C:WindowsSystem32driversetchosts。
2、客户端tnsnames.ora配置:
EOMS =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = sdwgrac1-vip)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = sdwgrac2-vip)(PORT = 1521))
(LOAD_BALANCE = yes)
(CONNECT_DA TA =
(SERVER = DEDICATED)
(SERVICE_NAME = eoms)
)
)
如上配置后,就可以在连接串里连接了,如:
sqlplus name/passwd@eoms
建议尽量使用eoms这个指定的数据库服务名来连接数据库。
我们的应用必须使用这个服务名来连接数据库,以合理使用数据库的负载均衡功能。
3、如果通过中间件进行连接,则URL应为:
jdbc:Oracle:thin:username/password@hostname:port/service_name
jdbc:oracle:thin:@(DESCRIPTION =(ADDRESS_LIST =(ADDRESS = (PROTOCOL = TCP)(HOST = sdwgrac1-vip)(PORT = 1521))(ADDRESS = (PROTOCOL = TCP)(HOST=sdwgrac2-vip)(PORT = 1521))(LOAD_BALANCE = yes))(CONNECT_DATA=(SERVER = DEDICATED)(SERVICE_NAME = eoms)(FAILOVER_MODE =(TYPE =SELECT )(METHOD = BASIC)(RETRIES = 120)(DELAY = 5))))