Oracle Error Codes

fine grain access policy conflicts with materialized view

A fine grain access control procedure has applied a non-null policy to the query for the materialized view.

How to Solve :

In order for the materialized view to work correctly, any fine grain access control procedure in effect for the query must return a null policy when the materialized view is being created or refreshed. This may be done by ensuring that the usernames for the creator, owner, and invoker of refresh procedures for the materialized view all receive a null policy by the user-written fine grain access control procedures.