AWM does not provide Materialized Views as potential data sources.

Question

Hi
I would like to map OLAP dimensions and cubes directly to materialized views. The Oracle AWM tool, however, only displays Tables, Views and Synonyms as mapping objects and I have to indirectly map to normal views created over the materialized views.
Why does Oracle enforce this limitation?
Thanks
Kind Regards
Greg

Answer 1

Greg,
Not sure why AWM enforces this limitation, certainly Warehouse Builder does not enforce this rule (at least not to my knowledge). You could raise a bug/enhancement request with Support. However, my recommendation is to never to map directly to a source object, such as a fact table or materialized view, in AWM. This can create all sorts of problems as you move your AWM model across environments. I always suggest to my customers and consultants they create a view over their source objects and use the view within the mapping editor. It will give you more control over the flow of data into your cube/dimension since it allows you to define filters on the view.
Hope this helps
Keith Laker
Oracle EMEA Consulting
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