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;
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