Preface

Questions

  1. When I run ps (on Linux), why do I see my java process a bazillion times!

  2. How do I run without an X server and still get graphics?

  3. Tomcat dies after I log out!

Answers

When I run ps (on Linux), why do I see my java process a bazillion times!

Linux implemented threads as processes. Due to other gory details that is beyond the scope of this FAQ - the ps command doesn't work correctly with respect to threads. You can get more gory details here and here .

How do I run without an X server and still get graphics?

You either need to run headless or run an alternate X-server. Some more information can be found here, here, or here. Or if your are using a JVM 1.4 or better, you can use the system property java.awt.headless=true

Tomcat dies after I log out!

This is a common complaint when using Solaris. Make sure you use nohup and see this thread