Java EE (Java Enterprise Edition) General Discussion

Short version: What timeouts exist in Tomcat, and where do I set them? I've found a "connection timeout" which appears to be how long the server will wait from when a connection is first opened until you send the complete URL, and a "session timeout" which is how long the session will stay open without you sending another request. But I appear to by timing out inside my JSP code. Can I set this somewhere?

Longer version: I'm working on an app where I want to upload a sizable file (65 MB) and use it to update a database. This would be a once-a-month mass update. I wrote the processing code and it appears to work just find when I use a file with just a hundred records or so, but when I send the full file, 400,000 records or thereabouts, I get a very generic servlet exception, which I'm guessing is because I'm timing out somewhere. But I can't find any parameters to control timeout intervals.