Webi -- Slow prompt performance

Hi,
I have a problem with Prompts in web intelligence, particularly those of type date,
the lists of values are recreated on each call, which makes the
Refresh of a document very slow
The filter definition is:
WP.S_DATE BETWEEN @ Prompt ('Start 1.
von? ',' D ',' Wp \ S Date ', MONO, FREE) AND
@ Prompt ('Start 2. Ba?', 'D', 'Wp\ S Date', MONO, FREE)
P.S: I have :
1) Uncheck the property "Auto Refresh"
2) Check the property "Export with universe"
Ans the problem still persist.
Any idea please?
Best Reagards,
Edited by: Asma REZGUI on Jan 11, 2011 11:30 AM

why do you need a LOV for date?
and even so, do you have a master table for time/date dimension or you get it directly from your fact table?
if you're getting it directly from fact table then its wrong, it will take much time loading dates,
my advice in dates prompts, in webi filter go to prompts option and deselect the LOV.
good luck

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