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CRS cannot startup after node reboot, with errors opening raw OCR/VD on EMC, eg. "utopen:7:Failed To Open Ocr File/Disk" (Doc ID 1310396.1)

Last updated on JULY 26, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
HP-UX Itanium

Symptoms

CRS will not start up after server reboot.
OCR and Voting disk are on raw devices and storage is on EMC.

Symptom details:
1. ocssd.log may show errors opening voting disk
And/Or errors opening OCR may be found in cssNN.log in $CRS_HOME/log/client:



2. The oracle software owner cannot read from the EMC Luns for OCR/Vote disks :
$ dd if=DISK_PATH/ocr1 of=/dev/null bs=1024 count=2000
=> THIS FAILS
But, the permissions are correct on the $ASM_DISK_PATH devices.

3. Root user CAN read from the EMC luns for OCR/Vote disks
# dd if=DISK_PATH/ocr1 of=/dev/null bs=1024 count=2000
=> THIS SUCCEEDS

4. After root user has read from the disk with the above command, THEN the oracle software owner can read from it
# dd if=DISK_PATH/ocr1 of=/dev/null bs=1024 count=2000
# exit
$ dd if=DISK_PATH/ocr1 of=/dev/null bs=1024 count=2000
=> THIS SUCCEEDS!

Changes

The server was rebooted. Storage is on EMC.

Cause

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In this Document
Symptoms
Changes
Cause
Solution


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