So periodically save the contents of sys.dm_exec_sessions to a table would be a good option?
I agree with John and will restate it... sys.dm_exec_sessions isn't the best idea by a long shot.
--Jeff Moden
RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row. First step towards the paradigm shift of writing Set Based code: ________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.
Change is inevitable... Change for the better is not.