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From VTR Ravi Kumar <>
Subject Re: Tomcat Freezes unexpectedly
Date Thu, 27 Jan 2005 11:10:52 GMT

This might be something related to number of simultaneous users 
increasing some threshold.

Similar thing happens in our intranet server also and at that time a 
message like Internal Server Error. Your servlet container is bing 
upgraded ... appears.

VTR Ravi Kumar.

Diego Espada wrote:

> Hi,
> we are having a serious problem with Tomcat 5.0.27. We have a web 
> server in production that is supposed to be 7x24, but it keeps hanging 
> after a few hours with no apparent cause. We have to keep restarting 
> it. One time, Tomcat logged that it was running out of threads (150), 
> so I changed this value to 2000 in the xml server config file and only 
> seemed to make things worse... now it hangs more often that before, 
> probably twice a day or more.
> The hangup does not follow any pattern... it can be at any moment in 
> the day, some days it doesn't hang and some days it hangs three or 
> four times.
> The log doesn't say anything useful. It seems that Tomcat just stops 
> logging after the hang up occurs.
> My Tomcat is deployed on a Windows 2000 Server with jdk 1.4.2_05 as a 
> service. It is not using the server jvm yet.
> Any configurations I should look ? any optimizations ? any clues ?
> Thanks
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