這篇文章主要介紹RAC如何改VIP和SCAN IP，文中介紹的非常詳細(xì)，具有一定的參考價(jià)值，感興趣的小伙伴們一定要看完！

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集群改不了計(jì)算機(jī)名，但是可以改IP，但是改IP的話最好不要改網(wǎng)段，改網(wǎng)段涉及到網(wǎng)絡(luò)層的更改，網(wǎng)絡(luò)層的命令為oifcfg


查看VIP的信息：
srvctl config vip -n node1
srvctl config vip -n node2
srvctl config nodeapps -a
[root@node1 ~]# srvctl config vip -n node1
VIP exists: /node1-vip/192.168.92.22/192.168.92.0/255.255.255.0/eth0, hosting node node1
[root@node1 ~]# srvctl config vip -n node2
VIP exists: /node2-vip/192.168.92.24/192.168.92.0/255.255.255.0/eth0, hosting node node2
[root@node1 ~]# srvctl config nodeapps -a
Network exists: 1/192.168.92.0/255.255.255.0/eth0, type static
VIP exists: /node1-vip/192.168.92.22/192.168.92.0/255.255.255.0/eth0, hosting node node1
VIP exists: /node2-vip/192.168.92.24/192.168.92.0/255.255.255.0/eth0, hosting node node2

修改node2的vip：(由24改為26)
/u01/app/11.2.0/grid/bin/srvctl stop listener -n node2
/u01/app/11.2.0/grid/bin/srvctl stop vip -n node2
修改兩個(gè)節(jié)點(diǎn)的/etc/hosts，把node2的新的vip體現(xiàn)出來。
/u01/app/11.2.0/grid/bin/srvctl modify nodeapps -n node2 -A 192.168.92.26/255.255.255.0/eth0
/u01/app/11.2.0/grid/bin/srvctl start vip -n node2
/u01/app/11.2.0/grid/bin/srvctl start listener -n node2



查看SCAN IP的信息(node-scan是/etc/hosts中scan ip的別名)
srvctl config scan
srvctl status scan
[root@node1 ~]# srvctl status scan
SCAN VIP scan1 is enabled
SCAN VIP scan1 is running on node node1
[root@node1 ~]# srvctl config scan
SCAN name: node-scan, Network: 1/192.168.92.0/255.255.255.0/eth0
SCAN VIP name: scan1, IP: /node-scan/192.168.92.30

修改SCAN VIP
/u01/app/11.2.0/grid/bin/srvctl stop scan_listener
/u01/app/11.2.0/grid/bin/srvctl stop scan
修改/etc/hosts里的scan vip的地址
/u01/app/11.2.0/grid/bin/srvctl modify scan -n node-scan
/u01/app/11.2.0/grid/bin/srvctl start scan
/u01/app/11.2.0/grid/bin/srvctl config scan
/u01/app/11.2.0/grid/bin/srvctl modify scan_listener -u
/u01/app/11.2.0/grid/bin/srvctl start scan_listener

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