In a J2EE scenario, is it reasonable to consider both the possibility of running the servlet container and the EJB container in the same VM, and running them in different VMs? I would guess the former would give a small plus to performance, whereas the latter would be a small plus for scalability. -- =================================================================== David M. Karr ; Best Consulting [EMAIL PROTECTED] ; Java/Unix/XML/C++/X ; BrainBench CJ12P (#12004)