If you need memory management, AND a schedule, then
S K Schema may be what you are looking for. It is essentially a very powerful scheduling program.
It comes from the same authors as the hightly regarded SK Tools, and includes an embedded copy of 'Free Up RAM' , though it could of course be set to run your Oxios program; Costs €9.95
Beware though that these types of program often stop processes you need to preserve- like Email polling etc, so make sure, if you do find something suitable that it includes an Exception List.