Rebalance of one diskgroup dismounted another diskgroup as disks were offlined

(Doc ID 1525330.1)

Last updated on JANUARY 31, 2013

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.2 and later
Information in this document applies to any platform.

Symptoms

ASM disks of diskgroup POS_REDO have gone offline.
This went offline when we were trying to rebalance another diskgroup name POS_DATA.

WARNING: Disk POS_REDO_0014 in mode 0x7f is now being taken offline
NOTE: initiating PST update: grp = 5, dsk = 14/0xf0f15f15, mode = 0x6a, op = 4
GMON updating disk modes for group 5 at 102 for pid 47, osid 26502
ERROR: Disk 14 cannot be offlined, since all the disks 14 0 with mirrored data will be offline.

Cause

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