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Oracle Enterprise Manager unable to get hard disk statistics

Symptoms

OMS: 10.2.0.5
Target Agent: 10.2.0.5 Windows 2008 Standard Edition Service Pack 1 64-bit
Happens for all Windows 2008 64-bit hosts with SAN drives using multipathing.
When accessing the Host > Performance tab on Windows 2008 64-bit host, get a Metric Collection Error:
Exception: oracle.sysman.emSDK.emd.comm.MetricGetException: Result has repeating key value on
drive 0: for diskactivity metric
emagent.trc shows:
2009-06-19 11:19:06,125 Thread-6736 ERROR engine:
[host, <hostname>,Load] : nmeegd_GetMetricData failed : Result has repeating key value : 0 C: U: C: U:
Collection Error:
Error getting data for target <hostname>. Exception:
oracle.sysman.emSDK.emd.comm.MetricGetException: Result has repeating key value : 0 C: U: C: U:

Switching to the last 24 hrs view.

Bug 8214155: ERROR RESULT HAS REPEATING KEY VALUE: <DISK DRIVES> ON DBCONSOLE

Cause:

Microsoft issue with Windows 2008 64-bit and SAN multipath.

Appl y this hotfix: http://support.microsoft.com/kb/974878/EN-US

References:
http://forums.oracle.com/forums/thread.jspa?threadID=997169
http://support.microsoft.com/kb/974878/EN-US

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