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Salvaging MDW on SQL Server 2008




Last week I had the opportunity in attempting to salvage a MDW configuration.
As at the time of compiling this  it was still not working ; I’m hoping it a stone through away from getting the collections running.

The client had setup the MDW and found it was collecting far too much data as part of the default collections and wanted it stopped. And as you know there is no Microsoft documented way of uninstalling the MDW.  However, Aaron has a good article with disclaimer ridden code offered at http://www.mssqltips.com/sqlservertip/2473/removing-the-sql-server-management-data-warehouse/. With my limited experience with the code and testing, I’d say it is very close to safe as long as you don’t drop any of the schedules.

FYI -  If MDW is ever re-enabled the CollectorSchedule_Every_15min , CollectorSchedule_Every_6h schedules needs to exists for three of the data collection to be reinitiated.

Unfortunately the client seem to have gone the extra step and deleted data from three of the system collection tables (syscollector_collection_sets_internal ,syscollector_collection_items_internal).

At the moment, I have managed to identify the missing records and relationships; and inserted the data to the system tables. Which has made things much more better than not having any error messages popping up from the MDW UI. I’m hoping and praying that Bill Ramos will have some time to respond to get this done and dusted.

FYI – From the testing I carried out, I did realise that all the GUID’s in the system tables are consistent and shouldn’t make a different if you copied them over to another environment.

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