The question is: Is it a feasible solution to have views/materialized views created in one database and have them access 50 tables in another database through db link, considering that there will be DMLs happening every day?
As for the MV's…I would not create a MV which uses remote tables. Instead, I'd create the MV in the remote database. Then I'd use the db link to see the MV in the remote database.
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