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

Last updated on MARCH 06, 2019

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 Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.


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, 


No changes but testing disk/interconnect failures


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