SQL Server RLS vs Oracle FGAC What is the difference between SQL Server RLS and Oracle FGAC. How to decide which one to go for? We already have both the products in place and teams to support the products.
I don't know Oracle, but these the seems to do different things.

RLS is row-level security. I.e., you see this row, but not that row. 

FGAC (fine-grained access control) seems to be about auditing, i.e., "I can see that you did this modification yesterday". That would be more comparable to the Server Audit feature in SQL Server. (Please correct me if I'm wrong, those who know about FGAC.)