Re: OutOfMemoryError some time on some tomcat!!!!1

2010-11-23 Thread xu cheng
! On 23 November 2010 14:10, Caldarale, Charles R chuck.caldar...@unisys.comwrote: From: xu cheng [mailto:xcheng@gmail.com] Subject: Re: OutOfMemoryError some time on some tomcat1 I just kept redeploying apps , and the perm gen keep growing each time I deploy the same app. and when

Re: OutOfMemoryError some time on some tomcat!!!!1

2010-11-23 Thread Daniel Baktiar
), for example. --- daniel baktiar http://savinggaia.tritiumapps.com - saving the planet is everyone's business! On 23 November 2010 14:10, Caldarale, Charles R chuck.caldar...@unisys.comwrote: From: xu cheng [mailto:xcheng@gmail.com] Subject: Re: OutOfMemoryError some time

RE: OutOfMemoryError some time on some tomcat!!!!1

2010-11-23 Thread Caldarale, Charles R
From: xu cheng [mailto:xcheng@gmail.com] Subject: Re: OutOfMemoryError some time on some tomcat1 hanging onto a reference to an object from your webapp classes, preventing the old webapp deployment from being garbage collected. what kind of object do you mean by saying

Re: OutOfMemoryError some time on some tomcat!!!!1

2010-11-23 Thread Sylvain Laurent
Don't bother with jhat, try eclipse Memory Analysis Tool instead. It's much more friendly and efficient to find leaks. On 23 nov. 2010, at 12:18, xu cheng wrote: hi, Chuck.Caldarale I referenced to these two links http://blogs.sun.com/fkieviet/entry/classloader_leaks_the_dreaded_java

Re: OutOfMemoryError some time on some tomcat!!!!1

2010-11-22 Thread Daniel Baktiar
hi xu cheng, having a powerful machine with big memory is good. but don't assume that everything will be used automatically. the jvm doesn't automatically use all the resources in your memory when you start tomcat. you need to configure it. try to add something like this:

Re: OutOfMemoryError some time on some tomcat!!!!1

2010-11-22 Thread xu cheng
hi Daniel thanks alot for replying. I don't know how to figure out how much the param MaxPermSize is set to. may be it's set to be default. I just set the xmx and xms, so I thought that the memory will absolutely enough, I didn't notice this param, my fault. I did an experiment on tomcat , I

Re: OutOfMemoryError some time on some tomcat!!!!1

2010-11-22 Thread xu cheng
ps: after several times of redeployment, java.lang.OutOfMemoryError: PermGen space comes up. I always redeploy the apps *without* shutting down the server 在 2010年11月23日 下午1:50,xu cheng xcheng@gmail.com写道: hi Daniel thanks alot for replying. I don't know how to figure out how much the

Re: OutOfMemoryError some time on some tomcat!!!!1

2010-11-22 Thread Daniel Baktiar
hi xu cheng, don't mention it. glad you've eventually solved your problem. daniel --- daniel baktiar http://savinggaia.tritiumapps.com - saving the planet is everyone's business! 2010/11/23 xu cheng xcheng@gmail.com hi Daniel thanks alot for replying. I don't know how to figure out

RE: OutOfMemoryError some time on some tomcat!!!!1

2010-11-22 Thread Caldarale, Charles R
From: xu cheng [mailto:xcheng@gmail.com] Subject: Re: OutOfMemoryError some time on some tomcat1 I just kept redeploying apps , and the perm gen keep growing each time I deploy the same app. and when I undeploy the app, the perm gen didn't clean the garbage Exactly the situation

Re: OutOfMemoryError some time on some tomcat!!!!1

2010-11-22 Thread xu cheng
? for example? thanks 2010/11/23 Caldarale, Charles R chuck.caldar...@unisys.com From: xu cheng [mailto:xcheng@gmail.com] Subject: Re: OutOfMemoryError some time on some tomcat1 I just kept redeploying apps , and the perm gen keep growing each time I deploy the same app. and when

Re: OutOfMemoryError some time on some tomcat!!!!1

2010-11-22 Thread Daniel Baktiar
), for example. --- daniel baktiar http://savinggaia.tritiumapps.com - saving the planet is everyone's business! On 23 November 2010 14:10, Caldarale, Charles R chuck.caldar...@unisys.comwrote: From: xu cheng [mailto:xcheng@gmail.com] Subject: Re: OutOfMemoryError some time on some tomcat1

RE: OutOfMemoryError some time on some tomcat!!!!1

2010-11-21 Thread Caldarale, Charles R
From: xu cheng [mailto:xcheng@gmail.com] Subject: OutOfMemoryError some time on some tomcat1 the app works pretty well on my pc, and the tomcat is apache-tomcat-6.0.29 however , when I put this app on to another computer with the same tomcat it throws this exception Java

Re: OutOfMemoryError some time on some tomcat!!!!1

2010-11-21 Thread xu cheng
hi: thanks for replying the app is running on a powerful server and the memory is suppose to be enough I'll check if there is a memory leak,(althouth the app is suppose to use only a few memory) thanks 2010/11/22 Caldarale, Charles R chuck.caldar...@unisys.com From: xu cheng

Re: OutOfMemoryError some time on some tomcat!!!!1

2010-11-21 Thread xu cheng
by the way, it doesn't throws this exception while running on my computer it is only when the app is deploy on another computer that this problem occur 2010/11/22 xu cheng xcheng@gmail.com hi: thanks for replying the app is running on a powerful server and the memory is suppose to be

Re: OutOfMemoryError some time on some tomcat!!!!1

2010-11-21 Thread xu cheng
after tracing the app with jprofiler for several hours , I still cannot figure the problem. it seems that the app doesn't use a lot of memory. and it still run pretty well in my computer.and after it is deployed in the server, it crash the problem of the environment? but the tomcat on the