the big problem is that it makes refactoring and changing logic much harder, as you now two different places to maintain business logic. In my experience, most

the big problem is that it makes refactoring and changing logic much harder, as you now two different places to maintain business logic. In my experience, most problems that DBAs would like to use SPs for can be easily solved by refactoring/merging SQL calls and proper caching of objects during a request or session, two things that an ORM really help you with.