在前面的文章中提到过如何修改Oralce RAC的scan ip,在实际工作中，可能会根据客户现场需要修改Oracle RAC的各种Ip地址，比如Public Ip、Private Ip、Vip，在这篇文章中将会介绍如何修改Oracle RAC的vip（Virtual Ip）。案例中以Oracle 11.2.0.4 RAC为例进行操作步骤分解。
1、操作系统及数据库
Os Version：Red Hat Enterprise Linux Server release 6.9
Database Version：oracle 11.2.0.4
2、/etc/hosts配置
cat /etc/hosts
192.168.77.10 rac1
10.10.10.30 rac1priv
192.168.77.11 rac2
10.10.10.40 rac2priv
192.168.77.12 rac1vip
192.168.77.13 rac2vip
192.168.77.15 racscanip
3、实验需求
将rac1vip 192.168.77.12改为192.168.77.16
将rac2vip 192.168.77.13改为192.168.77.17
4、查看当前vip的状态信息
[grid@rac1 ~]$ srvctl status vip -n rac1
VIP rac1vip is enabled
VIP rac1vip is running on node: rac1
[grid@rac1 ~]$ srvctl status vip -n rac2
VIP rac2vip is enabled
VIP rac2vip is running on node: rac2
[grid@rac1 ~]$ srvctl config vip -n rac1
VIP exists.: rac1
VIP exists.: /rac1vip/192.168.77.12/255.255.255.0/eth0
[grid@rac1 ~]$ srvctl config vip -n rac2
VIP exists.: rac2
VIP exists.: /rac2vip/192.168.77.13/255.255.255.0/eth0
5、停止两节点的监听及vip资源
[grid@rac1 ~]$ srvctl stop listener -n rac1
[grid@rac1 ~]$ srvctl stop listener -n rac2
[grid@rac1 ~]$ srvctl stop vip -n rac1
[grid@rac1 ~]$ srvctl stop vip -n rac2
[grid@rac1 ~]$ crsctl stat res -t
6、在所有节点/etc/hosts文件中修改新v ip地址
7、修改ocr注册信息,此时查看config配置已经修改完成 （root用户权限）
srvctl modify nodeapps -n rac1 -A 192.168.77.16/255.255.255.0/eth0
srvctl modify nodeapps -n rac2 -A 192.168.77.17/255.255.255.0/eth0
[root@rac1 grid]# srvctl config vip -n rac1
VIP exists.:rac1
VIP exists.: /rac1vip/192.168.77.16/255.255.255.0/eth0
[root@rac1 grid]# srvctl config vip -n rac2
VIP exists.:rac2
VIP exists.: /rac2vip/192.168.77.17/255.255.255.0/eth0
[root@rac1 grid]#
8、启动两节点的监听及vip资源
[root@rac1 grid]# srvctl start vip -n rac1
[root@rac1 grid]# srvctl start vip -n rac2
[root@rac1 grid]# srvctl start listener -n rac1
[root@rac1 grid]# srvctl start listener -n rac2
9、检查修改后vip的详细情况
[root@rac1 grid]# crsctl stat res -t
10、检查vip配置是否正确
[root@rac1 grid]# srvctl status vip -n rac1
VIP rac1vip is enabled
VIP rac1vip is running on node: rac1
[root@rac1 grid]# srvctl status vip -n rac2
^[[AVIP rac2vip is enabled
VIP rac2vip is running on node: rac2
[root@rac1 grid]# srvctl status vip -n rac2
VIP rac2vip is enabled
VIP rac2vip is running on node: rac2
[root@rac1 grid]# srvctl config vip -n rac1
VIP exists.:rac1
VIP exists.: /rac1vip/192.168.77.16/255.255.255.0/eth0
[root@rac1 grid]# srvctl config vip -n rac2
VIP exists.:rac2
VIP exists.: /rac2vip/192.168.77.17/255.255.255.0/eth0
[root@rac1 grid]#
11、检查vip是否可以ping通及连接
12、修改参数LOCAL_LISTENER后，手工注册监听，成功，无需重启任务服务
alter system set local_listener='(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.77.16)(PORT=1521))' sid = 'racdb1';
alter system set local_listener='(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.77.17)(PORT=1521))' sid = 'racdb2';
alter system register；
13、测试连接
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