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OEM 12c - Disk f of server is 99% busy, but how to tell what instance is doing most of that work.

edited Mar 18, 2015 4:11PM in Enterprise Manager Generic (MOSC) 7 commentsAnswered

I am using OEM Cloud Control 12c (12.1.0.2) and I have a disk on a server that is getting killed by IO.  99% busy and is highlighted as critical in OEM and I can drill down on this until I am blue in the face and I only get more graphs telling me just how bad it is. 

I have over 20 instances on this server, so I would like to be able to figure out how to see a percentage of the IO broken down by target (db instance).

which database is doing the most IO on this drive that is so busy? 

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