参考文档：
How to remove/delete a node from Grid Infrastructure Clusterware when the node has failed (文档 ID 1262925.1)
 
删除数据库实例：
可以使用dbca图形界面删除
也可以使用dbca静默方式删除rac1中的数据库实例：
[oracle@rac2 bin]$ dbca -silent -deleteInstance -nodeList rac1 -gdbName orcl -instanceName orcl1 -sysDBAUserName sys -sysDBAPassword oracle
Deleting instance
1% complete
2% complete
6% complete
13% complete
20% complete
26% complete
33% complete
40% complete
46% complete
53% complete
60% complete
66% complete
Completing instance management.
100% complete
 
 
更新RAC节点信息：
[oracle@rac2 bin]$ echo $ORACLE_HOME
/oracle/app/oracle/product/11.2.0/db_1/oui/bin/
 
[oracle@hisrac02 bin]$  ./runInstaller -updateNodeList ORACLE_HOME=/oracle/app/oracle/product/11.2.0/db_1 "CLUSTER_NODES=hisrac02" 
Starting Oracle Universal Installer...
 
Checking swap space: must be greater than 500 MB.   Actual 62924 MB    Passed
The inventory pointer is located at /etc/oraInst.loc
The inventory is located at /oracle/app/oraInventory
 
 
查看集群节点信息：
[root@hisrac02 bin]#  ./crsctl stat res -t |grep vip
ora.hisrac02.vip
ora.scan1.vip
 
删除rac1节点的vip：
[root@hisrac02 bin]# ./srvctl remove vip -i rac1 -f
 
查看集群节点信息：
[root@hisrac02 bin]# ./olsnodes -s -t
hisrac01        Inactive        Unpinned
hisrac02        Active  Unpinned
 
从集群中删除节点1：
[root@hisrac2 bin]# ./crsctl delete node -n hisrac01
CRS-4661: Node rac1 successfully deleted.
 
更新集群节点信息：
[grid@hisrac02 bin]$  ./runInstaller -updateNodeList ORACLE_HOME=/oracle/app/oracle/product/11.2.0/db_1 "CLUSTER_NODES=hisrac02" 
Starting Oracle Universal Installer...
 
Checking swap space: must be greater than 500 MB.   Actual 62929 MB    Passed
The inventory pointer is located at /etc/oraInst.loc
The inventory is located at /oracle/app/oraInventory
'UpdateNodeList' was successful.
 
检查确认仅剩余hisrac02节点：
[grid@hisrac02 bin]$ olsnodes
hisrac02
 
 
至此，从集群中清理hisrac01信息完毕。

ITPub博客

oracle 11g rac添加节点前之清除节点信息

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