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Known Issues When asm_diskstring is Set to /dev/* (Doc ID 1921561.1)

Last updated on APRIL 19, 2022

Applies to:

Oracle Database - Enterprise Edition - Version 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
Information in this document applies to any platform.


In 11gR2 onward, changing asm_diskstring will also change DiscoveryString in gpnp profile which CSS uses when discovering voting files.

A "bad" string may prevent CSS from starting as discover may not find the voting or take very long time.

ASM  parameter asm_diskstring should never be set to '/dev/*' as it's known to cause issues. This note lists known issues and remedies in this area.

Refer to the following note for best practice to set this parameter.

<note 1608549.1> - Improving ASM Disk Discovery (ASM_DISKSTRING) Time Best Practices 


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