详情：

Oralce 11g RAC OCR和VOTEDISK 迁移

1、新建一个磁盘组+NEW
Create diskgroup CRS NORMAL REDUNDANCY
FAILGROUP CRS_0000 disk '/dev/asm-orctest1'
FAILGROUP CRS_0001 disk '/dev/asm-orctest2'
FAILGROUP CRS_0002 disk '/dev/asm-orctest3'
ATTRIBUTE 'compatible.asm' = '11.2';

2、查看ocr备份
[root@rac02 bin]# ./ocrconfig -manualbackup
ocrconfig -showbackup
[root@rac02 bin]# ./ocrconfig -showbackup manual
rac01   2017/08/03 06:47:10   /u01/11.2.0/grid/cdata/rac-cluster/backup_20170803_064710.ocr
rac02   2017/08/01 02:32:01   /u01/11.2.0/grid/cdata/rac-cluster/backup_20170801_023201.ocr
2、2个节点停止集群并修改配置文件（更改里面的磁盘组名字为新建的磁盘组）
./crsctl stop crs
vi /etc/Oracle/ocr.loc

3、启动一个节点到独占模式并确认磁盘组+NEW是否mount，如没有，手动mount。
crsctl start crs -excl -nocrs

SQL> select  GROUP_NUMBER, NAME,STATE from  v$asm_diskgroup;
GROUP_NUMBER NAME                         STATE
------------ ------------------------------ -----------
         1 ASM_DATA1                      MOUNTED
         2 ASM_FL                       MOUNTED
         3 CRS                            MOUNTED
         4 DATA                         MOUNTED
4、使用OCR备份恢复OCR到新的磁盘组（注意提前更改ocr.loc）
#./ocrconfig -restore  /u01/11.2.0/grid/cdata/rac-cluster/backup_20170801_023201.ocr

[root@rac02 bin]# ./ocrconfig -manualbackup
rac01   2017/08/03 06:47:10   /u01/11.2.0/grid/cdata/rac-cluster/backup_20170803_064710.ocr
rac02   2017/08/01 02:32:01   /u01/11.2.0/grid/cdata/rac-cluster/backup_20170801_023201.ocr

5、恢复votedisk
[root@rac02 bin]# ./crsctl replace votedisk  +CRS
[root@rac02 bin]# ./ocrconfig -restore  /u01/11.2.0/grid/cdata/rac-cluster/backup_20170801_023201.ocr
[root@rac02 bin]# ./crsctl replace votedisk  +CRS
Successful addition of voting disk 99fc4fb627ab4ffabfa4819288ef362d.
Successful addition of voting disk 69c39aef708f4f0abf39c97b4c55dcea.
Successful addition of voting disk 6bef23769bae4f5fbfb594f99707b160.
Successful deletion of voting disk 264b8b526ac54fe9bf80c5eee1350526.
Successfully replaced voting disk group with +CRS.
CRS-4266: Voting file(s) successfully replaced

检查
ocrcheck---------------------------------------------检查结果未变化
crsctl query css votedisk
[root@rac02 bin]# ./ocrcheck
Status of Oracle Cluster Registry is as follows :
       Version                  :          3
       Total space (kbytes)   :   262120
       Used space (kbytes)      :     3480
       Available space (kbytes) :   258640
       ID                     : 1128199232
       Device/File Name       :      +DATA
                                    Device/File integrity check succeeded
                                    Device/File not configured
                                    Device/File not configured
                                    Device/File not configured
                                    Device/File not configured
       Cluster registry integrity check succeeded
       Logical corruption check succeeded
[root@rac02 bin]# ./crsctl query css votedisk
##  STATE    File Universal Id                File Name Disk group
--  -----    -----------------                --------- ---------
 1. ONLINE 99fc4fb627ab4ffabfa4819288ef362d (/dev/asm-orctest1) [CRS]
 2. ONLINE 69c39aef708f4f0abf39c97b4c55dcea (/dev/asm-orctest2) [CRS]
 3. ONLINE 6bef23769bae4f5fbfb594f99707b160 (/dev/asm-orctest3) [CRS]
Located 3 voting disk(s).

6、删除掉原来
./ocrconfig -delete  +DATA
然后重启集群