How to decide which BI tool is suitable in a particular scenario, SSAS or OBIEE?

For a 开发者_高级运维large Data Base which one is better in performance. which one will give data very fast on MDX query execution.

For a 200GB data set, SSAS on an ordinary wintel server will be fine. It plays nicely with readily available front-end tools and will be much, much cheaper than Oracle unless you already have incumbent OBIEE licencing.