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Expert speaks on Oracle 10g OLAP and Hyperion

By Michael Armstrong-Smith


 In my opinion the best OLAP tool around is the one built by Hyperion.  Here is a link to their products  I have used a standard Oracle data warehouse, built using OWB, as a source to a Hyperion solution.  However, I did not build the Hyperion piece. I only made the data available from my data warehouse for them to create OLAP cubes of the essential data.  Hyperion does allow drills back into a relational environment where Discoverer could be used to produce the raw results.


This is what we did at a recent client.  Discoverer handled 75% of the reporting and Hyperion the remaining 25% which was used by executives and senior management.  Note: Hyperion does not use an Oracle database.  It uses its own database called Essbase.  This database is a really clever OLAP-only database and employs algorithms that Oracle only dream about. 


For instance, they have a smart algorithm that only populates cube cells that actually have values, the rest are not only unpopulated but don't even exist.  Oracle cubes do not do this; they expand all values in all dimensions, leaving around 75% of cells NULL. 


Hyperion is not cheap but it is used by most of the Fortune 500 companies.




Rittman on OLAP 10g:


Oracle OLAP features:


Here is the Oracle Forum for OLAP -


Details on Discoverer cube creation:


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