OCR存储了集群的全局配置信息（如节点映射、资源定义、监听器配置、VIP/SCAN IP地址等）。若OCR因硬件故障、存储损坏或人为误操作丢失，备份文件可快速恢复集群配置，避免整个RAC环境瘫痪
。
1.1
检查
OCR
的状态
|
|
[root@rac1 bin]# ./ocrcheck
Status
of
Oracle Cluster Registry
is
as
follows :
Version : 3
Total
space
(kbytes) : 262120
Used
space
(kbytes) : 2884
Available
space
(kbytes) : 259236
ID : 278609533
Device/File
Name
: +OCRVOTE
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 |
1.2
备份
OCR
手动备份
|
|
[root@rac1 ~]# cd /oracle/grid/crs_1/bin/
[root@rac1 bin]# ./ocrconfig -manualbackup
rac1 2018/08/01 19:55:47 /oracle/grid/crs_1/cdata/rac-cluster/backup_20180801_195547.ocr |
查看有效的备份
|
|
[root@rac1 bin]# ./ocrconfig -showbackup
PROT-24: Auto backups
for
the Oracle Cluster Registry are
not
available
rac1 2018/08/01 19:55:47 /oracle/grid/crs_1/cdata/rac-cluster/backup_20180801_195547.ocr |
19c ocr
备份文件状态发生了变化，备份文件放置于
ocr
磁盘中
|
|
[grid@rac19cn1 bin]$ ./ocrconfig -showbackup
rac19cn2 2021/06/01 16:42:24 +OCRVT:/rac19cn-cluster/OCRBACKUP/backup00.ocr.263.1074098507 724960844
rac19cn2 2021/06/01 12:41:44 +OCRVT:/rac19cn-cluster/OCRBACKUP/backup01.ocr.261.1074084067 724960844
rac19cn2 2021/06/01 08:41:03 +OCRVT:/rac19cn-cluster/OCRBACKUP/backup02.ocr.264.1074069653 724960844
rac19cn2 2021/05/30 20:39:01 +OCRVT:/rac19cn-cluster/OCRBACKUP/
day
.ocr.262.1073939943 724960844
rac19cn2 2021/05/19 12:00:02 +OCRVT:/rac19cn-cluster/OCRBACKUP/week.ocr.258.1072958407 724960844 |
1.3 VOTING Disk
从
11g R2
开始，
Voting Disk
的备份会包含在
ocr
的备份中。
查看
voting
盘状态
|
|
[root@rac1 bin]# ./crsctl query css votedisk
## STATE File Universal Id File
Name
Disk
group
|
