环境：AIX7.1+Oracle Rac 11.2.0.3
迁移描述：今天在装Oracle Rac的时候，错误的将500G的数据盘用作OCRDG了，遂后续比较麻烦，只能讲ocr和votedisk迁移到新建的OCRDG上，并把DATADG删除并格式化该盘。（OCRDG为normal 冗余）
操作如下：
grid@rac1:/home/grid>/oraapp/grid/gridhome/bin/ocrcheck
Status of Oracle Cluster Registry is as follows :
Version : 3
Total space (kbytes) : 1469612
Used space (kbytes) : 3784
Available space (kbytes) : 1465828
ID : 1820175369
Device/File Name : +DATADG
Device/File integrity check succeeded
Device/File not configured
Device/File not configured
Cluster registry integrity check succeeded
Logical corruption check bypassed due to non-privileged user
添加ocr信息到+OCRDG中：
root@rac1:./root>/oraapp/grid/gridhome/bin/ocrconfig -add +OCRDG
删除+DATADG中ocr：
root@rac1:./root>/oraapp/grid/gridhome/bin/ocrconfig -delete +DATADG
然后迁移votedisk：
grid@rac1:/home/grid>crsctl replace votedisk +OCRDG
查看votedisk的信息：
grid@rac1:/home/grid>crsctl query css votedisk;
查看diskgroup的信息：
sqlplus / as sysasm
SQL> select group_number,name,state,type from V$asm_diskgroup;
此时spfile存放在+DATADG中，需要重建spfile：
SQL>create pfile='/tmp/asmpfile.ora' from spfile;
SQL>create spfile='+OCRDG' from pfile='/tmp/asmpfile.ora';
然后使用root用户重启crs即可（两边顺序重启）
root@rac1:./root>/oraapp/grid/gridhome/bin/crsctl stop crs
root@rac1:./root>/oraapp/grid/gridhome/bin/crsctl start crs
删除磁盘组+DATADG：
SQL>alter diskgroup DATADG dismount;
SQL>drop diskgroup DATADG including contents;
转载于:https://www.cnblogs.com/seven-dba/p/4354873.html
