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现象：
节点2主机关停之后，VIP并没有failover到节点一 如下所示，在节点一查看，VIP并没有FAILOVER过来。
[root@MAA01 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr A4:BA:DB:13:E2:AB
inet addr:10.8.32.111 Bcast:10.0.15.255 Mask:255.255.255.0
inet6 addr: fe80::a6ba:dbff:fe13:e2ab/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:12896778 errors:0 dropped:0 overruns:0 frame:0
TX packets:9488933 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2875695560 (2.6 GiB) TX bytes:2411913446 (2.2 GiB)
Interrupt:114 Memory:d6000000-d6012800
eth0:1 Link encap:Ethernet HWaddr A4:BA:DB:13:E2:AB
inet addr:10.8.32.115 Bcast:10.0.15.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:114 Memory:d6000000-d6012800
eth1 Link encap:Ethernet HWaddr A4:BA:DB:13:E2:AD
inet addr:192.168.127.101 Bcast:192.168.127.255 Mask:255.255.255.0
inet6 addr: fe80::a6ba:dbff:fe13:e2ad/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:203865 errors:0 dropped:0 overruns:0 frame:0
TX packets:309076 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:217218808 (207.1 MiB) TX bytes:66031839 (62.9 MiB)
Interrupt:122 Memory:d8000000-d8012800
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:2264776 errors:0 dropped:0 overruns:0 frame:0
TX packets:2264776 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3249461652 (3.0 GiB) TX bytes:3249461652 (3.0 GiB)
[oracle@MAA01 ~]$ crs_stat -t
Name Type Target State Host
------------------------------------------------------------
ora....SM1.asm application ONLINE ONLINE maa01
ora....01.lsnr application ONLINE ONLINE maa01
ora....t01.gsd application ONLINE ONLINE maa01
ora....t01.ons application ONLINE ONLINE maa01
ora....t01.vip application ONLINE ONLINE maa01
ora....SM2.asm application ONLINE OFFLINE
ora....02.lsnr application ONLINE OFFLINE
ora....t02.gsd application ONLINE OFFLINE
ora....t02.ons application ONLINE OFFLINE
ora....t02.vip application ONLINE OFFLINE
ora.rac.db application ONLINE ONLINE maa01
ora....c1.inst application ONLINE ONLINE maa01
ora....c2.inst application ONLINE OFFLINE
ora...._taf.cs application OFFLINE OFFLINE
ora....ac1.srv application OFFLINE OFFLINE
ora....ac2.srv application OFFLINE OFFLINE
ora....rac1.cs application OFFLINE OFFLINE
ora....ac1.srv application OFFLINE OFFLINE
ora....rac2.cs application OFFLINE OFFLINE
ora....ac2.srv application OFFLINE OFFLINE
[oracle@MAA01 ~]$
此时，在节点1上ping节点2，无法ping通：[oracle@MAA01 ~]$ ping 10.8.32.112
PING 10.8.32.112 (10.8.32.112) 56(84) bytes of data.
From 10.8.32.111 icmp_seq=1 Destination Host Unreachable
From 10.8.32.111 icmp_seq=2 Destination Host Unreachable
分析：
查看了节点1的监听配置文件，未发现有异常：
$CRS_HOME/log//*.log
$CRS_HOME/log//crsd/*.log
$CRS_HOME/log//cssd/*.log
$ORACLE_HOME/network/admin/listener.ora
[oracle@MAA01 ~]$
[oracle@MAA01 ~]$ cd $ORACLE_HOME
[oracle@MAA01 db]$ cd network/admin/
[oracle@MAA01 admin]$ cat listener.ora
# listener.ora.maa01 Network Configuration File: /oracle/app/11gR1/db/network/admin/listener.ora.maa01
# Generated by Oracle configuration tools.
INBOUND_CONNECT_TIMEOUT_LIS |