环境：OEL 5.7 + Oracle 10.2.0.5 RAC
需求：更换存储，OCR、Voting disk同时需要更换到新存储。
替换OCR（Oracle Cluster Registry）首先需要关闭RAC所有节点的crs，然后导出当前的ocr配置文件，手工修改ocr.loc文件后，导入ocr配置文件，可选择性创建ocrmirror。
本次实验演示就是将原来的/dev/raw/raw1替换为/dev/raw/raw14，并创建ocrmirror为/dev/raw/raw15.
--replace ocr--两个节点关闭crs/s01/oracle/product/10.2.0/crs_1/bin/crsctl stop crs--ocrcheck/s01/oracle/product/10.2.0/crs_1/bin/ocrcheck --导出ocr的配置/s01/oracle/product/10.2.0/crs_1/bin/ocrconfig -export /tmp/ocrfile.dmp --查看文件大小ls -lrt /tmp/ocrfile.dmp --两个节点修改ocr为新的/dev/raw/raw14cat /etc/oracle/ocr.loc --导入ocr配置文件/s01/oracle/product/10.2.0/crs_1/bin/ocrconfig -import /tmp/ocrfile.dmp /s01/oracle/product/10.2.0/crs_1/bin/ocrcheck --增加ocrmirror/s01/oracle/product/10.2.0/crs_1/bin/ocrconfig -replace ocrmirror /dev/raw/raw15/s01/oracle/product/10.2.0/crs_1/bin/ocrcheck--最后查看ocr.loc文件cat /etc/oracle/ocr.loc 实际测试替换OCR的关键操作：
[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl stop crs[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/ocrconfig -export /tmp/ocrfile.dmp [root@rac1-server rules.d]# vi /etc/oracle/ocr.loc ocrconfig_loc=/dev/raw/raw14local_only=FALSE[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/ocrconfig -replace ocrmirror /dev/raw/raw15[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/ocrcheckStatus of Oracle Cluster Registry is as follows : Version : 2 Total space (kbytes) : 96144 Used space (kbytes) : 4652 Available space (kbytes) : 91492 ID : 1953645605 Device/File Name : /dev/raw/raw14 Device/File integrity check succeeded Device/File Name : /dev/raw/raw15 Device/File integrity check succeeded Cluster registry integrity check succeeded[root@rac1-server ~]# cat /etc/oracle/ocr.loc #Device/file getting replaced by device /dev/raw/raw15 ocrconfig_loc=/dev/raw/raw14ocrmirrorconfig_loc=/dev/raw/raw15local_only=false[root@rac1-server ~]# 替换voting disk比较简单，只需要把新的voting disk加进来，然后把旧的删除即可。
本次实验演示就是新加/dev/raw/raw11,/dev/raw/raw12,/dev/raw/raw13,然后将原来的/dev/raw/raw2删除。
--replace voting disk--which crsctl确认crsctl的全路径/s01/oracle/product/10.2.0/crs_1/bin/crsctl--查询当前的votediskcrsctl query css votedisk--添加新的votediskcrsctl add css votedisk /dev/raw/raw11 -forcecrsctl add css votedisk /dev/raw/raw12 -forcecrsctl add css votedisk /dev/raw/raw13 -force--删除旧的votediskcrsctl delete css votedisk /dev/raw/raw2 -force实际替换voting disk的关键操作：
[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl add css votedisk /dev/raw/raw11 Cluster is not in a ready state for online disk addition[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl add css votedisk /dev/raw/raw11 -forceNow formatting voting disk: /dev/raw/raw11successful addition of votedisk /dev/raw/raw11.[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl query css votedisk 0. 0 /dev/raw/raw2 1. 0 /dev/raw/raw11located 2 votedisk(s).[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl add css votedisk /dev/raw/raw12 -forceNow formatting voting disk: /dev/raw/raw12successful addition of votedisk /dev/raw/raw12.[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl add css votedisk /dev/raw/raw13 -forceNow formatting voting disk: /dev/raw/raw13successful addition of votedisk /dev/raw/raw13.[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl query css votedisk 0. 0 /dev/raw/raw2 1. 0 /dev/raw/raw11 2. 0 /dev/raw/raw12 3. 0 /dev/raw/raw13located 4 votedisk(s).[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl delete css votedisk /dev/raw/raw2Cluster is not in a ready state for online disk removal[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl delete css votedisk /dev/raw/raw2 -forcesuccessful deletion of votedisk /dev/raw/raw2.[root@rac1-server rules.d]# /s01/oracle/product/10.2.0/crs_1/bin/crsctl query css votedisk 0. 0 /dev/raw/raw11 1. 0 /dev/raw/raw12 2. 0 /dev/raw/raw13located 3 votedisk(s).[root@rac1-server rules.d]# 附录：本次实验环境：
1.旧存储模拟：4块盘：其中第1块盘分成了2个区，绑定为raw设备raw1和raw2，分别给ocr和voting disk使用，剩余3块是给ASM使用的：
2.新存储模拟：10块盘：其中前三块（raw11，raw12，raw13）给voting disk使用，第4块和第5块（raw14和raw15）给ocr使用：
3.使用新存储3块10G的盘和2块5G的盘分别新增DATADG和FRA2个ASM磁盘组，其中DATADG是Normal冗余，FRA是External冗余：
