One of the quorum disks for an ASM diskgroup shows up as missing (Doc ID 2874102.1)

Last updated on APRIL 17, 2023

Applies to:

Symptoms

One of the quorum disks for an ASM diskgroup is reported missing when querying v$asm_disk.

For example, issuing "select name,header_status,mount_status,path from v$asm_disk" shows
SQL> select name,header_status,mount_status,path from v$asm_disk;

GROUP_NUMBER MOUNT_S HEADER_STATU NAME LABEL
------------ ------- ------------ ------------------------------ -------------------------------
PATH
------------------------------------------------------------------------------------------------------------------------
1 MISSING UNKNOWN QD_DATA_<DB node1>_MG

Changes

 The node is rebooted.

Cause

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