oracle 19c rac 恢复ocr

oracle19c测试：

1.检查当前环境：
检查ocr基本情况：
[root@rac1 ~]# ocrcheck
Status of Oracle Cluster Registry is as follows :
Version : 4
Total space (kbytes) : 491684
Used space (kbytes) : 84508
Available space (kbytes) : 407176
ID : 1163051970
Device/File Name : +OCR
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

检查表决盘基本情况：
[root@rac1 ~]# crsctl query css votedisk
## STATE File Universal Id File Name Disk group
-- ----- ----------------- --------- ---------
1. ONLINE 9d0eab3adf864f6bbf5aa7cbcd157573 (/dev/asmdiskb) [OCR]
2. ONLINE 418a18c31f934f59bfe7ab512b2e4e72 (/dev/asmdiskd) [OCR]
3. ONLINE 88c2b4110f464fa5bf04b1c1dcbb2f97 (/dev/asmdiskc) [OCR]
Located 3 voting disk(s).

检查备份情况：
[root@rac2 ~]# ocrconfig -manualbackup
rac1 2022/12/01 15:24:41 +OCR:/rac/OCRBACKUP/backup_20221201_152441.ocr.294.1122305083 724960844
rac1 2022/09/29 11:09:14 +OCR:/rac/OCRBACKUP/backup_20220929_110914.ocr.259.1116673755 724960844
rac2 2022/09/20 16:23:38 +OCR:/rac/OCRBACKUP/backup_20220920_162338.ocr.290.1115915021 724960844

[root@rac1 ~]# ocrconfig -showbackup
rac1 2022/11/11 09:20:47 +OCR:/rac/OCRBACKUP/backup00.ocr.289.1120468823 724960844
rac1 2022/11/11 05:20:20 +OCR:/rac/OCRBACKUP/backup01.ocr.291.1120454383 724960844
rac1 2022/11/11 01:19:39 +OCR:/rac/OCRBACKUP/backup02.ocr.263.1120439955 724960844
rac1 2022/11/10 01:16:23 +OCR:/rac/OCRBACKUP/day.ocr.262.1120353385 724960844
rac2 2022/10/28 14:40:37 +OCR:/rac/OCRBACKUP/week.ocr.260.1119278443 724960844

2.asm磁盘ocr恢复测试前的备份：
ASMCMD> cp backup_20221201_152441.ocr.294.1122305083 /home/appsoft/ocr
copying +ocr/rac/ocrbackup/backup_20221201_152441.ocr.294.1122305083 -> /home/appsoft/ocr/backup_20221201_152441.ocr.294.1122305083
[root@rac1 ocr]# ocrdump ocr20221201.dump

3.删除ocr磁盘组下文件

4.关闭所有节点，rac2无法正常关闭，加上 -f 强制关闭
[root@rac2 ~]# crsctl stop crs -f
强制关闭进程：
ps -ef |grep ora |awk '{print $2}' |xargs kill -9
ps -ef |grep grid |awk '{print $2}' |xargs kill -9
ps -ef |grep asm |awk '{print $2}' |xargs kill -9
ps -ef |grep storage |awk '{print $2}' |xargs kill -9
ps -ef |grep grid
ps -ef |grep ora
ps -ef |grep asm
ps -ef |grep crs

5.ocr恢复
我这里选择在节点一启动crs，排它模式，不启动crsd进程
[root@rac1 ocr]# crsctl start crs -excl -nocrs

[root@rac1 ocr]# ocrconfig -restore backup_20221201_153144.ocr.296.1122305507