Hi,

We have recently put into production a Tomcat 5.5.27 based web site, using JDK 1.6 (JDK 1.6.0_12-b04 on RedHat Linux). We have spent months developing and testing the site, both by us and the customer, and experienced no VM crashes. Now that we are in production we find the VM is crashing from time to time. Trying to see if anyone else has experienced the same thing I simply find plenty of requests for help, but no answers.

Looking at my catalina log I see:

[2009-05-08 01:22:33,174] ERROR (StandardWrapperValve.java:260) - Servlet.service() for servlet action threw exception
java.lang.IllegalStateException
at org .apache .catalina.connector.ResponseFacade.sendError(ResponseFacade.java:405) at org .apache .struts.action.RequestProcessor.processMapping(RequestProcessor.java: 658) at org .apache.struts.action.RequestProcessor.process(RequestProcessor.java: 193) at org.apache.struts.action.ActionServlet.process(ActionServlet.java: 1164)
        at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:397)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org .apache .catalina .core .ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java: 269) at org .apache .catalina .core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
        at com.myco.web.filter.CharsetFilter.doFilter(CharsetFilter.java:35)

I doubt this would be enough to destabilize a VM? We have a second filter that might be picky about the order that it is called, and we will look into this, but not being able to reproduce this issue in a non-producion environment is making it challenging. The 'uname -a' command gives:

Linux myco-prod01 2.4.21-37.ELsmp #1 SMP Wed Sep 7 13:28:55 EDT 2005 i686 i686 i386 GNU/Linux

Can anyone suggest an approach to establish the route cause? What stuff should I be checking?

André-John
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