How to Change IP and VIP in Oracle Clusterware(一)-概念篇
一、目的
how to change or update the cluster_interconnect and/or public interface IP information that is stored in the OCR
二、定义
public：IP
cluster_interconnec： cache fusion traffic
oifcfg：Oracle Interface Configuration Assistant
三、修改public ip
a. Use the getif option to show the currently configured interfaces
% $ORA_CRS_HOME/bin/oifcfg getif
b. Delete the interface
% $ORA_CRS_HOME/bin/oifcfg delif -global eth0
c. Add the interface
% $ORA_CRS_HOME/bin/oifcfg setif –global eth0/10.2.166.0:public
d. The same step could be use for the private interface
% $ORA_CRS_HOME/bin/oifcfg delif –global eth1
% $ORA_CRS_HOME/bin/oifcfg setif –global eth1/192.168.1.0:cluster_interconnect
四、修改vip
(note: Stop database instances,stop the ASM instance ,stop the nodeapps )
a. Verifying Current VIP configuration
srvctl config nodeapps -n
b. Syntax for modifying nodeapps
$ srvctl modify nodeapps -n node1 -A 192.168.2.125/255.255.255.0/eth0
参考文献：
1. How to Change Interconnect/Public Interface IP or Subnet in Oracle Clusterware [ID 283684.1]
2. Modifying the VIP or VIP Hostname of a 10g or 11g Oracle Clusterware Node
[ID 276434.1]
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