1. what is the purpose of creation of universe than other
data sources ?
2. which is the best method in performance tuning techniques ?

Answer Posted / babu

Universe creation in other data source is to get more info
or which not possible in the same universe like(more than 2
fact tables ) in the way we can go for more than one data
source.

Performence tuning :
Universe level
1.universe should be Indexed on key columns
2.Increase Array fetch size.
3.Make short cut joins
4.Delete unnessory joins.
5.Use less no of Aliases
6.Use less Outer joins
Query Level:
1.Disable LoV for measure objects
2.Create filters(condition objects) at universe level
Report level
1.Create less no of variables
2.create comoplex logic in D/B level.

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