oracle11g RAC GI ORA-15003: diskgroup "XXXX" already mounted in another lock name space

昨天同事安装GI，在执行root.sh时报错：

Disk Group DG_CLUSTER creation failed with the following message:
ORA-15018: diskgroup cannot be created
ORA-15017: diskgroup "XXXX" cannot be mounted
ORA-15003: diskgroup "XXXX" already mounted in another lock name space

原因是在两个节点上同时执行了root.sh。

 

解决办法 (as root)：

cd $ORACLE_HOME/crs/install
./rootcrs.pl -deconfig -force

 

然后重新两边执行root.sh即可。