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From Jon Wingfield <jon.wingfi...@mkodo.com>
Subject Re: tomcat hangs, top displays 99%
Date Thu, 08 Jul 2004 13:04:29 GMT
Just a thought. Does your error page also have header.jsp included?
Have you got yourself into an infinite loop of "Session already 
invalidated" IllegalStateExceptions?

Jon

Hans Wichman wrote:

> Hi,
> while stresstesting my application using tomcat 4.1.29, oracle, dbcp 
> connection pooling and a stresstest tool, I see the amount of my 
> connections in my pool fluctuate (as expected). At a certain while I 
> still have plenty connections left in the pool, errors start occuring:
> org.apache.jasper.JasperException: setAttribute: Session already 
> invalidated
> 
> and after this has happened for a while (some processing proceeds 
> normally), I get:
> org.apache.jasper.JasperException:
>     at 
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:254) 
> 
>     at 
> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
>     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
> ... root cause ...
> javax.servlet.ServletException:
>     at 
> org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:536)

> 
>     at org.apache.jsp.header_jsp._jspService(header_jsp.java:293)
>     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:137)
> 
> at this point tomcat hangs. If I shutdown the stresstest tool, tomcat 
> still displays at 99% when running top (freebsd).
> 
> Does anybody know why these errors occur, and why after stopping the 
> stresstest, tomcat is still at 99%?
> I don't see any out of memory errors or something like that, and don't 
> really know where to start exploring the problem.
> 
> thanks in advance
> Hans W
> 
> 
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