Webi Report Performance issue as compared with backaend SAP BW as

Hi
We are having Backend as SAP BW.
Dashboard and Webi reports are created with Backend SAP BW.
i.e thru Universe on top of Bex query and then webi report and then dashboard thru live office.
My point is that when we have created webi reprts with date range as parameter(sometimes as mandatory variable which comes as prompt in webi) or sometimes taking L 01 Calender date from Bex and creating a prompt in webi, we are facing that reports are taking lot of time to open. 5 minutes 10 minutes and sometimes 22 minutes to open.
This type of problem never ocurred when Backened was Oracle.
Also when drilling in webi report,it takes lot of time .
So can you suggest any solution?

Hi Gaurav,
We logged this issue with support already, it is acknowledged.
What happens is that whenever you use an infoobject in the condition
(so pull in the object into condition and build a condition there,
or use that object in a filter object in the universe and then use the filter)
this will result in that object being added to the result set.
Since the query will retrieve a lot of different calendar days for the period you selected,
the resultset will be VERY big and performance virtually non-existent.
The workaround we used is to use a BEX variable for all date based selections.
One optional range variable makes it possible to build various types of selections
(less (with a very early startdate), greater (with a very far in the future enddate) and between).
Because the range selection is now handled by BEX, the calendar day will not be part of the selection...
Good luck!
Marianne

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