1. What is the best way to increase Forms scalability, except bigger box? Additional managed servers or ...?There is the tuning (http://docs.oracle.com/cd/E24269_01/doc.11120/e24477/tuning.htm#i1012865) , but beyond that there has to be more hardware resources for scalability. Whether one big box, many smaller boxes or virtual machines , more hardware is always going to needed. Add to that the specifics of deployment options like you have mentioned.