ASM Does Not Discover Disk on Solaris (Doc ID 368840.1)

Last updated on JANUARY 30, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 10.1.0.2 to 12.1.0.2 [Release 10.1 to 12.1]
Oracle Solaris on SPARC (64-bit)
Solaris Operating System (SPARC 64-bit)

***Checked for relevance on 01-Nov-2014***

Symptoms

Using ASM on any  SOLARIS platform and not using a volume manager to manage the disks.  Under this circumstances, the disks are identified under path /dev/rdsk.

The problem is the disks are not discovered when the instance is started.

Basic points that need to be reviewed:

* permissions of the device are set for the oracle owner, group and mode 0660.
* Parameter asm_diskstring is configured with a value that resolves the disks to be used.

Queries over v$asm_disk does not return rows or does not return all the expected disks.

Cause

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