I have checked everything so far. The most important test is to check whether all the admin tools work ok. So, I tested adpatch and adadmin.
The Oracle Applications Manager is working, and the applications login also. I cannot start up a forms session from the webapplication..nothing happens. I can login forms without the web application, directly into the forms application.
I think it could be a memory problem, when I start all the services..my laptop is running out of memory.