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ALERT.LOG for ASM Shows "WARNING: failed to online diskgroup resource ora.<DISKGROUP>.dg (unable to communicate with CRSD/OHASD)" (Doc ID 1060920.1)

Last updated on MAY 08, 2023

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.1 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

If OCR is located on ASM diskgroup, following shows in ASM alert log ($ORACLE_BASE/diag/asm/+asm/+ASMn/trace/alert_+ASMn.log) after ASM mounted all diskgroup successfully while starting up Grid Infrastructure(CRS):


SQL> ALTER DISKGROUP ALL MOUNT /* asm agent */
..
SUCCESS: diskgroup <DISKGROUP> was mounted
SUCCESS: ALTER DISKGROUP ALL MOUNT /* asm agent */
..
WARNING: failed to online diskgroup resource ora.<DISKGROUP>.dg (unable to communicate with CRSD/OHASD)



Or after ASM dismounted all diskgroup successfully while shutting down clusterware:

..
SUCCESS: ALTER DISKGROUP ALL DISMOUNT /* asm agent */
Sun Feb 07 11:11:13 2010
WARNING: failed to offline diskgroup resource ora.<DISKGROUP>.dg (unable to communicate with CRSD/OHASD)
..
freeing rdom 0




Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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