ASM Diskgroup Unmounted Following EMC VPLEX Replication Outage (Doc ID 1634828.1)

Last updated on DECEMBER 06, 2014

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.3 to 12.1.0.1 [Release 11.2 to 12.1]
Information in this document applies to any platform.

Symptoms

EXTERNAL diskgroups on RAC (but it could happen on non-RAC too).

Failure tests performed by offlining interconnect between storages. 

On the surviving site a diskgroup ( not always the same on different tests) is dismounted due to IO errors. 


No I/O errors are reported in OS logs - seems all disks are available, 



Changes

No changes but testing disk/interconnect failures

Cause

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