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From Felix Schumacher <felix.schumac...@internetallee.de>
Subject Re: TOMCAT be in Hung state?
Date Wed, 08 Dec 2010 14:51:51 GMT
Am Mittwoch, den 08.12.2010, 13:10 +0530 schrieb Karthik Nanjangude:
> Hi
> 
> Spec
> 
> a) JDK 1.6
> 
> b) 2 Web Server Tomcat 5.0.20 (on same O/s with different Startup /shutdown ports   &
share the same  RAM / CPU Processor]
> 
> c) O/s Linux Red hat  [ Linux DTVMS1 2.6.18-128.1.10.el5PAE #1 SMP Wed Apr 29 14:24:53
EDT 2009 i686 i686 i386 GNU/Linux ]
> 
> 
> 1.       RHEL AS 4U6
> 
> 2.       8*2 GB RAM
> 
> 3.       4 Processors
> 
> 
> JAVA_OPTS="-Xms256m -Xmx512m"
That is a low setting compared to the ram of the machines. But if your
application needs only that much, it should be fine.
> 
> Problem: Tomcat is not responding every 45 days
> 1)      Stops writing  Catalina.out,
> 2)      Not  responding with  any of the  jsp pages of the Application,
> 3)      No exceptions raised.
> 
> and needs restart  to over come the situation.
> 
>  Can any body tell me under what circumstances can a TOMCAT be in Hung state?
You could try yourself by taking threaddumps at such times:
http://wiki.apache.org/tomcat/HowTo#How_do_I_obtain_a_thread_dump_of_my_running_webapp_.3F

hth
 Felix
> 
> 
> with regards
> 
> N.S.Karthik
> 



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