Strange tomcat behavior

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Strange tomcat behavior

Strange tomcat behavior

2003-10-09 - By ralf.bechtel@(protected)

Back

Reply: 1 2 3

Hi everybody on the list!

We observed a strange tomcat behavior (tomcat 4.1.24) while running a servlet:
Everything works fine some days or even weeks. Suddenly (and at random time)
tomcat throws the following exceptions:

2003-10-08 11:44:48 CoyoteAdapter An exception or error occurred in the
container during the request processing
java.lang.NullPointerException

Source code of java.lang.NullPointerException

at org.apache.catalina.core.StandardEngineValve

Source code of org.apache.catalina.core.StandardEngineValve

(StandardEngineValve
.java:164)
at org.apache.catalina.core.StandardPipeline

Source code of org.apache.catalina.core.StandardPipeline

$StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline

(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase

Source code of org.apache.catalina.core.ContainerBase

(ContainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter

Source code of org.apache.coyote.tomcat4.CoyoteAdapter

(CoyoteAdapter.java:223)
at org.apache.coyote.http11.Http11Processor

Source code of org.apache.coyote.http11.Http11Processor

(Http11Processor.java:594)
at org.apache.coyote.http11.Http11Protocol

Source code of org.apache.coyote.http11.Http11Protocol

$Http11ConnectionHandler
.processConnection(Http11Protocol.java:392)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)
at org.apache.tomcat.util.threads.ThreadPool

Source code of org.apache.tomcat.util.threads.ThreadPool

$ControlRunnable.run(ThreadPool
.java:619)
at java.lang.Thread

(Thread.java:484)

This exception occurs some times. Suddenly tomcat throws another exception:

2003-10-08 11:46:44 CoyoteAdapter An exception or error occurred in the
container during the request processing
java.lang.NullPointerException

at java.lang.String

(String.java:509)
at org.apache.tomcat.util.buf.ByteChunk

Source code of org.apache.tomcat.util.buf.ByteChunk

(ByteChunk.java:669)
at org.apache.coyote.tomcat4.CoyoteAdapter

(CoyoteAdapter.java:578)
at org.apache.coyote.tomcat4.CoyoteAdapter

(CoyoteAdapter.java
:280)
at org.apache.coyote.tomcat4.CoyoteAdapter

(CoyoteAdapter.java:221)
at org.apache.coyote.http11.Http11Processor

(Http11Processor.java:594)
at org.apache.coyote.http11.Http11Protocol

$Http11ConnectionHandler
.processConnection(Http11Protocol.java:392)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)
at org.apache.tomcat.util.threads.ThreadPool

$ControlRunnable.run(ThreadPool
.java:619)
at java.lang.Thread

(Thread.java:484)

Note that there are no user defined classes in the stacktrace. What's the
reason of this behavior?

Regards

Ralf

*********************************************************************
OptiSoft GmbH Ralf Bechtel
Pforzheimer Str. 68a mail : ralf.bechtel@(protected)
D-75242 Neuhausen phone: +49 7234 9518-51
http://www.optisoft.de fax : +49 7234 9518-44

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