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This article is to share with you what to do about the failure of the ocr disk group, the editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article.

Ocr disk group failure

1. Automatic backup and recovery

Dd command copy

Backup first

Dd if=/dev/raw/raw1 of=/home/grid/voting.2017

Restore

Dd if=/home/oracle/voting.2017 of=/dev/raw/raw1

Md_backup command backup disk group

Asmcmd-p

Md_backup / home/grid/ocrvote2.bak-G OCR

Manual export

. / ocrconfig-export / home/grid/ocr2.bak

2. Simulated damage

Dd if=/dev/zero of=/dev/raw/raw1 bs=8192 count=12800

Error

[grid@rac1 rac1] $ocrcheck

PROT-602: Failed to retrieve data from the cluster registry

PROC-26: Error while accessing the physical storage

The cluster status is normal.

[grid@rac1 rac1] $crsctl check crs

CRS-4638: Oracle High Availability Services is online

CRS-4537: Cluster Ready Services is online

CRS-4529: Cluster Synchronization Services is online

CRS-4533: Event Manager is online

2017-10-07 16 purl 19V 38.269:

[/ u01/app/11.2.0/grid/bin/orarootagent.bin (3040)] CRS-5822:Agent'/ u01 disconnected from server. Details at (: CRSAGF00117:) {0 in 3VR 307} in / u01/app/11.2.0/grid/log/rac1/agent/crsd/orarootagent_root/orarootagent_root.log.

2017-10-07 16 purl 19 purl 38.274:

[/ u01/app/11.2.0/grid/bin/scriptagent.bin (17425)] CRS-5822:Agent'/ u01 disconnected from server. Details at (: CRSAGF00117:) {0:13:3} in / u01/app/11.2.0/grid/log/rac1/agent/crsd/scriptagent_grid/scriptagent_grid.log.

2017-10-07 16 1914 38.287:

[/ u01/app/11.2.0/grid/bin/oraagent.bin (3036)] CRS-5822:Agent'/ u01 disconnected from server. Details at (: CRSAGF00117:) {0:1:7} in / u01/app/11.2.0/grid/log/rac1/agent/crsd/oraagent_grid/oraagent_grid.log.

2017-10-07 16 purl 19 purl 38.298:

[/ u01/app/11.2.0/grid/bin/oraagent.bin (3272)] CRS-5822:Agent'/ u01 disconnected from server. Details at (: CRSAGF00117:) {0 in 11 in 843} / u01/app/11.2.0/grid/log/rac1/agent/crsd/oraagent_oracle/oraagent_oracle.log.

2017-10-07 16 1914 38.305:

[ohasd (2103)] CRS-2765:Resource 'ora.crsd' has failed on server' rac1'.

2017-10-07 16 Suzhou 1914 39.738:

[crsd (17471)] CRS-1013:The OCR location in an ASM disk group is inaccessible. Details in / u01/app/11.2.0/grid/log/rac1/crsd/crsd.log.

2017-10-07 16 1914 39.757:

[crsd (17471)] CRS-0804:Cluster Ready Service aborted due to Oracle Cluster Registry error [PROC-26: Error while accessing the physical storage

]. Details at (: CRSD00111:) in / u01/app/11.2.0/grid/log/rac1/crsd/crsd.log.

2017-10-07 16 1914 44.785:

[ohasd (2103)] CRS-2765:Resource 'ora.crsd' has failed on server' rac1'.

2017-10-07 16 1915 46.138:

[crsd (17484)] CRS-1013:The OCR location in an ASM disk group is inaccessible. Details in / u01/app/11.2.0/grid/log/rac1/crsd/crsd.log.

2017-10-07 16 1915 46.147:

[crsd (17484)] CRS-0804:Cluster Ready Service aborted due to Oracle Cluster Registry error [PROC-26: Error while accessing the physical storage

]. Details at (: CRSD00111:) in / u01/app/11.2.0/grid/log/rac1/crsd/crsd.log.

2017-10-07 16-19-19-48-171:

[ctssd (2629)] CRS-2407:The new Cluster Time Synchronization Service reference node is host rac1.

2017-10-07 16 1915: 51.185:

[ohasd (2103)] CRS-2765:Resource 'ora.crsd' has failed on server' rac1'.

2017-10-07 16 1914 51.303:

[cssd (2549)] CRS-1625:Node rac2, number 2, was manually shut down

View automatic backup

. / ocrconfig-showbackup

Check

Crsctl check crs

Crsctl query css votedisk

Ocrcheck

3. Restore (under root users)

All nodes stop crs

. / crsctl stop crs-f

. / crsctl stop has-f

. / crsctl disable has

. / crsctl disable crs-- shuts down and restarts

Crsctl start crs-excl

Open crs exclusively

Crsctl start crs-excl-nocrs

Create a disk group

Select name, COMPATIBILITY from v$asm_diskgroup

Create diskgroup ocr external redundancy DISK'/ dev/raw/raw1' ATTRIBUTE 'compatible.asm'='11.2.0.0.0'

Drop diskgroup ocr force including contents

Ocrconfig-restore / u01/app/11.2.0/grid/cdata/rac-cluster/backup_20171007_153630.ocr

. / ocrconfig-restore / u01/app/11.2.0/grid/cdata/rac-cluster/backup00.ocr

Execute ocrcheck

Do you need to restore votingdisk?

Restore voting disk

. / crsctl replace votedisk + OCR

Stop clusterware running in exclusive mode

Crsctl stop crs-f

All nodes start crs normally

Crsctl start crs

CVU verifies the integrity of all RAC node OCR

Cluvfy comp ocr-n all-verbose

The above is how to do the failure of ocr disk group. The editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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