Anybody could told me when the JVM process will disappear?

1.The system is RHEL5.1 and PC is my private machine, not connect to internet or local network.
2.I was had a tomcat performance test, login as "tomcat" and start tomcat server, it's pid was 8902.
3. after 12 hours, I relogin to the server but can not found process 8902.
4.I could not found any hs_err_pid.log and core.pid file under "tomcat" home, and only myself use this machine.
5. the jvm process have enough privilege for the file read and write.
So, I lost my road, why the jvm process will disappear and not leave any mark? thank you for help me !

Roy_Li wrote:
1.The system is RHEL5.1 and PC is my private machine, not connect to internet or local network.
2.I was had a tomcat performance test, login as "tomcat" and start tomcat server, it's pid was 8902.I don't know how you start it, but it's possible that your program gets a hangup signal and quits when you logout. You should in that case start it with nohup.
[http://en.wikipedia.org/wiki/Nohup]
Kaj

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