Why performance changes with the same conditions

Hello everyone,

I created an analysis and give filters as below;

Tarih.Year = 2015

Tarih.Month = 7

Tarih.LastDayOfMonthFlag = 1

Therefore, I want to display the values of date 31/07/2015 (mm/dd/yyyy). However, the analysis run punctuality is so bad when I use these filters

"On the other hand, when I give the filter for Tarih.Date = July 31, 2015", then the analytical results are seen immediately in one second.

Why the same conditions differ in the execution of the terms? Can you help me please.

Kind regards

Dilek

Hi Dilek,

While logically, this looks like the same query ("last day of July" vs "31 July") they'll be different queries in OBIEE, resulting from the different performance characteristics. Perhaps a strike a different logical Table (LTS), perhaps including different physical Source tables in a join, perhaps a hundred different maybes :-)

You must compare the logical and physical SQL that is executed as a result of your two queries. You can find this in the nqquery.log file - if it is not there then use SET LOGLEVEL setting logging for 2 (Google is your friend, for more details).

Compare the time spent in the database on the two motions; What's a bigger than the other? Or is the time spent in the BI server after data is returned from the DB? Whatever it is, you probably need to change your SPR so that he "understands" (i.e. the logic model is mapped optimal) this way to combine date objects you have.

Tags: Business Intelligence

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