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Cube Query not responding first time but second time

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Hi

I am not sure this is a basic problem or a strange problem. I cannot categorize it because i am a newbie.

When i run an MDX query on cube, i never get a response (even after 2 hours). But if i cancel the processing of query. Restart Analysis Services and then reexecute query, then i am getting response in a minute.

I am guessing, Query is trying to search more records than it is supposed to search in the first pass. If it is so, how can i prove it to somebody and what causes this.

My cube does have partitions for measure groups. each partition definition has 2 filters. Do think having 2 filters is wrong?

When i request data from a specific month and Product, i noticed, query processor is reading partitions of all months and all products - while I am expecting processor to read only one partition. (i found this by looking at profiler)

I don't have any aggregations for partitions.

thanks
Subhash


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