One Of The ASM Disks Can't Be Found due to Disk Label is missing (Doc ID 2000272.1)

Last updated on DECEMBER 19, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.5 and later
Linux x86-64

Symptoms

1] ASMlib disks are used for ASM disks with asm_diskstring - /dev/oracleasm/disks/*

2] One of ASM diskgroups can not be mounted due to one disk missing

Example in ASM alert.log

ERROR: diskgroup ORADATA was not mounted
ORA-15032: not all alterations performed
ORA-15040: diskgroup is incomplete
ORA-15042: ASM disk "1" is missing from group number "3"
ERROR: ALTER DISKGROUP ORADATA MOUNT /* asm agent *//* {2:28028:2} */

 

Changes

HDLM driver has been installed and system has been rebooted.

Cause

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