Just want to get a better control over the resources so that users get the lion share during the day and long running batch type processes get more juice at night.

Right now if one user comes along at noon and writes a crushing query, that one person can slow things down for everyone. Work Load manager allows granular control over process running on AIX, but since Informix is really kind of an island onto itself with its own VP's and memory management, I am wondering if WLM can even be useful with it.