My Oracle Support Banner

New 11.2 Grid Infrastructure Installation ( Is Removing Candidate mknod devices Or Symbolic Link Devices Created At /dev/asm Directory. (Doc ID 1366159.1)

Last updated on JANUARY 30, 2022

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 11.2 to 12.1]
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 Backup Service - Version N/A and later
Information in this document applies to any platform.


i) Sometimes, in order to define and associated meaningful device names to Candidate or Member physical ASM Disks on Linux/Unix, mknod devices <Document 1313687.1> or symbolic links are used to reference the real raw devices, this practice is completely valid and supported.

ii) But on ASM 11.2 release, there is a specific issue, when you place/create mknod devices or symbolic links at the "/dev/asm" directory, as the following example:

1) The /dev/asm/ASMDISK directory is created on each RAC node.

2) Then several mknod devices were created at the "/dev/asm/ASMDISK" directory referencing the real raw devices (e.g. /dev/rdsk Solaris):




To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.