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检查OCR的物理备份
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$ ocrconfig -showbackup

db02 2008/04/08 07:38:49 /opt/oracle/crs/cdata/crs

db02 2008/04/08 03:38:48 /opt/oracle/crs/cdata/crs

db02 2008/04/07 23:38:46 /opt/oracle/crs/cdata/crs

db02 2008/04/06 15:38:36 /opt/oracle/crs/cdata/crs

db02 2008/03/25 11:37:07 /opt/oracle/crs/cdata/crs

$ ls -lt /opt/oracle/crs/cdata/crs
total 48328
-rw-r--r-- 1 root system 0 Apr 16 07:38 temp.ocr
-rw-r--r-- 1 root system 3534848 Apr 08 07:38 backup00.ocr
-rw-r--r-- 1 root system 3534848 Apr 08 03:38 backup01.ocr
-rw-r--r-- 1 root system 3534848 Apr 07 23:38 backup02.ocr
-rw-r--r-- 1 root system 3534848 Apr 07 15:38 day_.ocr
-rw-r--r-- 1 root system 3534848 Apr 06 15:38 day.ocr
-rw-r--r-- 1 root system 3534848 Apr 01 11:37 week_.ocr
-rw-r--r-- 1 root system 3534848 Mar 25 11:37 week.ocr

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通过OCRCONFIG修改保存目录,-backuploc后是新目录

$ ocrconfig -backuploc /u02/backups

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***在ORACLE用户下进行检测
$ ocrcheck
Status of Oracle Cluster Registry is as follows :
Version : 2
Total space (kbytes) : 524044
Used space (kbytes) : 3304
Available space (kbytes) : 520740
ID : 926059209
Device/File Name : /dev/rrac_crs512m
Device/File integrity check succeeded

Device/File not configured

Cluster registry integrity check succeeded

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root用户下执行-export 输出备份

# ./ocrconfig -export /tmp/ocr-export

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$ ocrdump /tmp/ocrdump.txt

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单用户模式登录,CSS和CRS守护进程将不会启动,备份当前的inittab,
重建后复制回来,在CRS守护进程没有启动的情况下登录成功,
就可以通过下面的ocrconfig

ocrconfig -restore /opt/oracle/crs/cdata/crs/backup00.ocr

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