Sql default for prompt

Question

Hi all,
in OBIEE 11.1.1.6.4 I created a prompt with a default like:
SET VARIABLE DISABLE_CACHE_HIT=1, DISABLE_CACHE_SEED=1; SELECT "Current Date Varchar" FROM "Servizi Business Model"."Common" where 1=1
When I use the prompt in a Dashboard the default value is not updated, even if I refresh the page. The analysis using "Servizi Business Model"."Common".Current Date Varchar" shows the right and updated value. The tables in RPD are not cached
It seems to me that the query is executed on creation level but not a runtime?
Is it possible???

Answer 1

THIS IS MY FINAL STATE OF ART: PLEASE IF SOMEONE HAS SOMETHING BETTER ANSWER ME:
The prompt problem: the SQL CURSOR QUERY is cached! If database changes bu the query code is still the same, OBIEE USES THE CACHED RESULT
At the moment:
SET VARIABLE DISABLE_CACHE_HIT=1; --> not usefull at all
instanceconfig.xml
<Cache>
<Query>
<MaxEntries>1</MaxEntries>
<MaxExpireMinutes>1</MaxExpireMinutes>
<MinExpireMinutes>1</MinExpireMinutes>
<MinUserExpireMinutes>1</MinUserExpireMinutes>
</Query>
</Cache>
SELECT "Common"."Current Date Varchar" FROM "Servizi Business Model" WHERE <b>'@{system.currentTime}' = '@{system.currentTime}'</b>
By this hack, each query is different and the cache is bypassed...
The number of SQL queries increases but the cache is purged quickly.