Archive for category Data Warehouse

Are your #scom availability reports gray?

After a pretty long time I had to assess IT services availability using some custom Key Health Indicators. Operations Manager with its service based model is the right tool for this kind of assessment and the involved customer has an System Center 2012 Operations Manager (OpsMgr) deployment. I confidently started to drill through the standard […]


Troubleshooting Exchange 2010 MP aggregations in Operations Manager 2012

A while back in September 2012 I posted about a bug in Exchange 2010 aggregations in the data warehouse(Troubleshooting Exchange 2010 MP aggregations). The issue is still there, at least until version The aggregation stored procedure “” has been improved but the performance culprit has not been solved, so I took the time to […]


OpsMgr – Is alert reporting reliable? Reprise with some light.

In my last post Is alert reporting reliable? I focused on three aspects of alerts reporting that make me assert it isn’t reliable: alerts present in the live database, but not present in the data warehouse (anymore) alerts present in the data warehouse with an inconsistent resolution state (compared to the  data in the live […]


A tale of Identity and bad agent behavior

A couple of weeks ago my operational folks notified me of a strange new alert they need to deal with. When I took a look at the RMS I understood a new debugging session was about to start: Alert: Data Warehouse object health state data writer process failed to perform maintenance operation Source: Path: Last […]

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Troubleshooting Exchange 2010 MP aggregations

Here we are once again, many of the errors we found in MPs are related to poor "real world" testing. I guess the tester has an isolated environment where she/he tests only the specific MP and not the interactions with other MPs. The Exchange 2010 MP follows this rule. Since I installed the MP I […]