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This article mainly explains "how to back up and restore OCR in RAC". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to back up and restore OCR in RAC.

1 stop all nodes crs

Crsctl stop crs

2 backup OCR (export mode) root user execution

Ocrconfig-export / tmp/ocr.exp

3 start crs and destroy OCR content

Crsctl start crs

Dd if=/dev/zero f=/dev/raw/raw1 bs=1024 count=102400

4 check OCR (ocrcheck,cluvfy), and crs has been shut down automatically

[root@rac1 cluvfy] # ocrcheck

PROT-601: Failed to initialize ocrcheck

[root@rac1 cluvfy] #. / runcluvfy.sh comp ocr

Verifying OCR integrity

Checking OCR integrity...

Checking the absence of a non-clustered configuration...

All nodes free of non-clustered, local-only configurations.

ERROR:

Unable to obtain OCR integrity details from any of the nodes.

OCR integrity check failed.

Verification of OCR integrity was unsuccessful on all the nodes.

5 restore OCR (import mode) root user execution

Ocrconfig-import / tmp/ocr.exp

6 check OCR (ocrcheck,cluvfy) again

[root@rac1 tmp] # ocrcheck

Status of Oracle Cluster Registry is as follows:

Version: 2

Total space (kbytes): 104344

Used space (kbytes): 4348

Available space (kbytes): 99996

ID: 990580844

Device/File Name: / dev/raw/raw1

Device/File integrity check succeeded

Device/File not configured

Cluster registry integrity check succeeded

[root@rac1 cluvfy] #. / runcluvfy.sh comp ocr

Verifying OCR integrity

Checking OCR integrity...

Checking the absence of a non-clustered configuration...

All nodes free of non-clustered, local-only configurations.

Uniqueness check for OCR device passed.

Checking the version of OCR...

OCR of correct Version "2" exists.

Checking data integrity of OCR...

Data integrity check for OCR passed.

OCR integrity check passed.

Verification of OCR integrity was successful.

7 start all crs resources and check if the status is normal

[root@rac1 cluvfy] # crs_start-all

[root@rac1 cluvfy] # crs_stat-t

At this time, all resources and services should be started and returned to normal.

At this point, I believe you have a deeper understanding of "how to back up and restore OCR in RAC". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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