Seriously? Who thought it would be a good idea to create a view to return the DISTINCT list of BUSINESS_UNIT from RC_CASE? Talk about an O (n) performance disaster.
What’s wrong with a SELECT BUSINESS_UNIT FROM PS_BUS_UNIT_TBL_RC WHERE EXISTS (… case sub-query….).
Oh look … Two index seeks … shocker! It scales too …. wow … well I never.