When the CBO would not use bitmap indexes available?

I have a large data warehouse table in a star schema classic, with an index number of bitmap for the dimension tables. When you run queries that contain parameters for multiple indexes, the CBO will only use generally one or rarely two bitmap index.

It seems to me that if the indexes are valid, statistics, the values of the parameters are present, etc and the CBO uses a bitmap index in an AND condition, he would like to use all those she could.

there all the parameters that affect or bitmap how indexes him CBO will use? I'm looking for some advice on what to look for or research.

Database is 11.2.0.3 base with no patch.

Thanks in advance,

Sean

rp0428 - who has been deliberate because my question is not "how to solve this problem", that's exactly what I pointed out in my post. Just trying to see if there are all the controls to weight the decision-making community organizations in this area.

OK - then let me simply state it.

No - there are NO these parameters. But most of the posters are not really looking for a simple yes/no answer even if of many word of questions like that.

See my response as of March 18, 2012 19:21 in this thread: https://community.oracle.com/message/10219613?

Here I provide a simple table with SIX bitmap index, a query that uses predicates that combine values since the execution plan and the six columns indicating the different INDEX of BITMAP UNIQUE BITMAP, BITMAP or operations and BITMAP CONVERSION to ROWID.

I won't repeat everything here, but this example should show you that Oracle will limit itself the way you suggest.

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