RAC =
　　(DESCRIPTION =
　　(ADDRESS = (PROTOCOL = TCP)(HOST = 192.158.0.60)(PORT = 1521))
　　(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.59)(PORT = 1521))
　　(LOAD_BALANCE = yes)
　　(CONNECT_DATA =
　　(SERVER = DEDICATED)
　　(SERVICE_NAME = RAC.SHIMU.COM.CN)
　　)
　　)

　　LISTENERS_RAC =
　　(ADDRESS_LIST =
　　(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.60)(PORT = 1521))
　　(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.59)(PORT = 1521))
　　)

　　RAC2 =
　　(DESCRIPTION =
　　(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.59)(PORT = 1521))
　　(CONNECT_DATA =
　　(SERVER = DEDICATED)
　　(SERVICE_NAME = RAC.SHIMU.COM.CN)
　　(INSTANCE_NAME = RAC2)
　　)
　　)

　　RAC1 =
　　(DESCRIPTION =
　　(ADDRESS = (PROTOCOL = TCP)(HOST = VIPDB.SHIMU.COM.CN)(PORT = 1521))
　　(CONNECT_DATA =
　　(SERVER = DEDICATED)
　　(SERVICE_NAME = RAC.SHIMU.COM.CN)
　　(INSTANCE_NAME = RAC1)
　　)
　　)

　　哈哈，终于发现秘密了,所有cluster的listener和service都是监听VIP的地址。。。
　　呵呵。等着好戏吧。。。
　　4.故障测试

　　停掉node1,此时所有的连接都正常工作，检测node2的网络装况，呵呵，果不出所然：
　　[root@DB2PUB root]# ifconfig -a
　　eth0 Link encap:Ethernet HWaddr 00:50:56:40:00:5B
　　inet addr:192.168.0.62 Bcast:192.168.0.255 Mask:255.255.255.0
　　UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
　　RX packets:960 errors:0 dropped:0 overruns:0 frame:0
　　TX packets:70 errors:0 dropped:0 overruns:0 carrier:0
　　collisions:0 txqueuelen:1000
　　RX bytes:284407 (277.7 Kb) TX bytes:4017 (3.9 Kb)
　　Interrupt:9 Base address:0x10c0

　　eth0:1 Link encap:Ethernet HWaddr 00:50:56:40:00:5B
　　inet addr:192.168.0.59 Bcast:192.168.0.255 Mask:255.255.255.0
　　UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
　　RX packets:734 errors:0 dropped:0 overruns:0 frame:0
　　TX packets:227 errors:0 dropped:0 overruns:0 carrier:0
　　collisions:0 txqueuelen:1000
　　RX bytes:268965 (262.6 Kb) TX bytes:9534 (9.3 Kb)
　　Interrupt:9 Base address:0x10c0

　　eth0:2 Link encap:Ethernet HWaddr 00:50:56:40:00:5B
　　inet addr:192.168.0.60 Bcast:192.168.0.255 Mask:255.255.255.0
　　UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
　　RX packets:734 errors:0 dropped:0 overruns:0 frame:0
　　TX packets:227 errors:0 dropped:0 overruns:0 carrier:0
　　collisions:0 txqueuelen:1000
　　RX bytes:268965 (262.6 Kb) TX bytes:9534 (9.3 Kb)
　　Interrupt:9 Base address:0x10c0

　　eth1 Link encap:Ethernet HWaddr 00:50:56:40:00:5C
　　inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
　　UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
　　RX packets:734 errors:0 dropped:0 overruns:0 frame:0
　　TX packets:227 errors:0 dropped:0 overruns:0 carrier:0
　　collisions:0 txqueuelen:1000
　　RX bytes:268965 (262.6 Kb) TX bytes:9534 (9.3 Kb)
　　Interrupt:14 Base address:0x10e0

　　此时node2立即接管node1的VIP网络地址，所有的连接透明的连到了后台!!