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From "Nikolaos Giannopoulos" <nikol...@solmar.ca>
Subject Determining JVM stability
Date Fri, 23 May 2003 21:26:21 GMT
We have a Solaris 8 (sparc) production box at patch level 17 (java patch
level 61) and we are seeing Tomcat (jdk 1.4.1_01) processes and application
processes (jre 1.4.1_01) simply dissappear!

The tomcat logs show a rather generic exception that starts in Thread.run()

Anyone know of OR have seen any problems of this nature?

Anyone know of a tool or software component that can verify that in fact
there is a problem (i.e. that the JVM is crashing) with the underlying OS
libraries or something thereof.  Maybe there's a default JVM switch that
could be turned on to spit out debug info before it dies.

Any ideas are totally welcome... (barring rebuild the OS that is).

Thanks,

--Nikolaos


2003-05-16 11:21:26 CoyoteAdapter An exception or error occurred in the
container during the request processing
java.lang.NullPointerException
        at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
:164)
        at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invok
eNext(StandardPipeline.java:643)
        at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
        at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
        at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
        at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:432)
        at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConne
ction(Http11Protocol.java:386)
        at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:534)
        at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav
a:530)
        at java.lang.Thread.run(Thread.java:536)



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