Re: Can two Tomcat web apps deadlock each other?

2007-09-06 Thread Wm.A.Stafford
Alexey, Thanks for taking the time to reply. I'll try all your suggestions but I wanted to investigate the windows vs linux possibilities. Does the fact that this Tomcat behavior does not occur on the windows-based development server offer any clue as to what may be happening on the

RE: Can two Tomcat web apps deadlock each other?

2007-09-06 Thread Peter Crowther
From: Wm.A.Stafford [mailto:[EMAIL PROTECTED] Does the fact that this Tomcat behavior does not occur on the windows-based development server offer any clue as to what may be happening on the linux server when Tomcat hangs? I'm going to take a guess: server load. How heavily do you

Re: Can two Tomcat web apps deadlock each other?

2007-09-06 Thread Wm.A.Stafford
Peter, Thanks for replying. I don't think server load is a factor but I will look into it. What makes me think that load is probably not the cause is that when there are no startup errors everything starts and runs as normal in the normal amount of time. The problem occurs when one

Re: Can two Tomcat web apps deadlock each other?

2007-09-05 Thread Alexey Solofnenko
Everything is possible, but unlikely. Please try running server stack trace from http://tmitevski.users.mcs2.netarray.com/stacktrace/app/launch.jnlp to get a thread dump. It will show the list of threads and what locks they have acquired and what locks they are waiting for. - Alexey.

Re: Can two Tomcat web apps deadlock each other?

2007-09-05 Thread Wm.A.Stafford
Thanks Alexey. Unfortunately, the server in question is not ours and we do not even have log in on it, so any kind of sane analysis is probably out of the question. All we can do is try deploying another version with changes that will either fix the problem (we hope) or yield some more

Re: Can two Tomcat web apps deadlock each other?

2007-09-05 Thread Alexey Solofnenko
There can be a simple problem with locking - see http://tomcat.apache.org/faq/windows.html#lock . On Linux the files are usually not locked, so you can get class not found exception when a jar file is replaced with a new one. Ask administrators to get the stack trace (and check if CPU is at