RE: How to increase the stack memory for tomcat ?

[Ming Zhao]

If I want to increase the memory size of each process
or session, how can I do for Tomcat only or
Apache+Tomcat?

--- "Shapira, Yoav" <[EMAIL PROTECTED]> wrote:
> Howdy,
> Really?  The stack, no the heap?  You're sure?  Why?
> 
> Try -Xss a parameter into your java command line.
> 
> 
> Yoav Shapira
> Millennium ChemInformatics
> 
> 
> >-Original Message-
> >From: Surendra Kumar [mailto:[EMAIL PROTECTED]]
> >Sent: Friday, February 07, 2003 8:52 AM
> >To: Tomcat Users List
> >Subject: How to increase the stack memory for
> tomcat ?
> >
> >Hi All
> >   I want to increase the stack size allocated to
> my tomcat process. Is
> >there any configuration file where i can change
> this ?
> >   Besides is there any way i can configure the
> stack size for per Web
> >applications ?
> >
> >   I am using Tomcat version 3.3.1
> >
> > Thanks for any help/pointers.
> >
> >-Surendra
> >
> >
>
>-
> >To unsubscribe, e-mail:
> [EMAIL PROTECTED]
> >For additional commands, e-mail:
> [EMAIL PROTECTED]
> 
> 
>
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> 


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Pls help me on config of the memory problem

[Ming Zhao]

Hi,

How to set the maximum number of threads or clients
that the server can deal with simultonously? Running
java bean takes much memory, so I want to control the
number of users who can run it at the same time. I use
Apache2, Tomcat4.1 and mod-Jk2 under win2k. Thx,

Minger

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Re: JSP's in other directories

[Ming Zhao]

You use JK2 as the connector between Apache and
Tomcat? If so, you can map your jsp in the
workers2.properties. Still I have a question: how can
you set the main directory of your page files and call
Tomcat to deal with jsp files under your main
directory?

--- Erik Price <[EMAIL PROTECTED]> wrote:
> 
> 
> Nicholas J Campbell wrote:
> > Hi,
> > I have a question, I want to be able to access
> JSP pages that
> > are outside of the web-inf directory setup by
> tomcat…I do not know how
> > to do it, obviously. I have Apache 2 installed and
> use that at my main
> > server and then am running tomcat for the purposes
> of Servlets and JSP’s
> > and I want to know what I have to do to make
> myself be able to access a
> > jsp page that is in a directory like c:\site
> 
> You should generally be able to refer to resources
> in your site by using 
> a path relative to the context.  For instance, I
> have the following site 
> structure:
> 
> /MyApp
>   index.jsp
>   main.jsp
>   others.jsp
>   /WEB-INF
>/classes
> /com
>  /ptc
>   /myapp
>SomeClass.class
>OtherClass.class
>/server
> SomeServlet.class
> OtherServlet.class
>/lib
> somejar.jar
> 
> To access one of my JSPs from another JSP, I just
> use a relative path in 
> the "HTML" part of the JSP.  To forward to one of my
> JSPs from a 
> servlet, I use the following line of code:
> 
>String TARGET_JSP = "/main.jsp";
> 
>javax.servlet.ServletContext sc =
> this.getServletContext();
>javax.servlet.RequestDispatcher rd =
>  
> sc.getRequestDispatcher(TARGET_JSP);
>rd.forward();
> 
> That's one way to do it, even though the servlet is
> in 
> /MyApp/WEB-INF/classes and the JSP is in /MyApp.
> 
> 
> 
> Erik
> 
> 
>
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How to configure number of sessions, threads or connections of the server?

[Ming Zhao]

Hi,
I met a problem on my server's configuration.
On my website, the user can simulate the manufacturing
systme (java bean) online. If I run the simulation
offline (with the JBuilder), it's no problem to run
for the real time from year 1990 to now. When I put it
online, it can only run for short time (from 1/1/2002
to now), and I got some error for the long running
time simulation. So I think it the memory problem.
Therefor, I want to set the number of threads or
connections the server can server simultanously. But I
tried and failed. If you know something on it or you
think it's not the memory problem, please help me.

I use Apache2 and Tomcat4.1 (as the service to deal
with jsp files) under windows2000; In fact I once only
used Tomcat and the same problem. You can test it: 
1.http://shan.bu.edu/CRCD to sign in with zcm as
username and password;
2.click first button "reset simulation" to set the
beginning time of simulation;
3.click the last button "start simulation" to run
simulation.

Thanks,
Minger


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RE: Help: Simple example to use tomcat 4.1.12 / Apache 1.3 and mo d_jk ??

[Ming Zhao]

Hi, John

Is there any HOWTO for win2k? Similar to that for RH?
For my setup and configure of Apache, Tomcat and JK2
on win2k, it seems that Apache and Tomcat can work
well seperately. But it cannot work to open jsp file
with Apache to acivate Tomcat to deal with. And I got
the message on the Tomcat window: APR not loaded,
disabling jni component:java.io.ioexception: no jkjni
in java.library.path. Can you help me? Thanks lots,

Minger

--- "Turner, John" <[EMAIL PROTECTED]> wrote:
> 
> I don't think you can get any simpler than this:
> 
> http://www.johnturner.com/howto
> 
> The version numbers are irrelevant...the procedures
> are the same.
> 
> Newer versions of Tomcat use one connector class to
> handle multiple
> protocols.  That class is called CoyoteConnector and
> it "talks" JK, JK2, and
> HTTP (and I think HTTPS as well).  Older versions of
> Tomcat used a class
> called Ajp13Connector to "talk" JK.  If you are
> using JK, you can use either
> CoyoteConnector (enabled by default) or
> Ajp13Connector.  If you are using
> JK2, you have to use CoyoteConnector.
> 
> In your files, you are using JK commands (JkMount)
> with a JK2 module, that
> won't work. Check my HOWTO, if you have problems,
> post back to the list.
> 
> Also, flagging messages as "urgent" or "high
> importance" isn't very polite,
> and will probably cause more people to ignore your
> post than to read it and
> answer itwe're all very, very busy, and your
> important issue isn't any
> more important than those of anyone else.
> 
> John
> 
> 
> -Original Message-
> From: Rob Cartier [mailto:[EMAIL PROTECTED]] 
> Sent: Monday, December 16, 2002 5:11 PM
> To: [EMAIL PROTECTED]
> Subject: Help: Simple example to use tomcat 4.1.12 /
> Apache 1.3 and mod_jk
> ??
> Importance: High
> 
> I having looking for a very simple howto
> on how to get on RH 7.2
> 
> Tomcat 4.1.12 
> Apache 1.3 
> Mod_jk  or mod_jk2
> 
> working together possibly using the /examples that
> are included with tomcat as a test bed.
> 
> I am confused on how to configure tomcat. 
> I see Coyote/AJP13 and ajp13 in  the server.xml
> file but I am unsure which one to  use.
> 
> There is also a discussion of jk2.properties
> file but that one is all commented out and there
> seems to be no clear example of what needs to
> be done in the server.xml and jk2.properties
> if anything that needs to be adjusted. 
> 
> On the Apache side I have tried both
> mod_jk and mod_jk2 but the examples in the how to 
> are either for mod_jk.so or mod_jk2.so
> cant tell . It is very fustrating.
> 
> Does anyone have a very simple docs I can follow
> 
> ==
> 
> Here are some of my files
> 
> 
> I added this to my httpd.conf in the beginning
> 
> LoadModule jk2_module  modules/mod_jk2.so
> ADDModule  mod_jk2.c
> --
> 
> at the bottom I added so that it would at least
> start
> 
> 
> LoadModule jk2_module libexec/mod_jk2.so
> AddModule mod_jk2.c
> 
> 
>  Jk2WorkersFile /etc/httpd/conf/workers.properties
>  JkLogFile /var/log/httpd/mod_jk2.log
>  JkLogLevel info
>  JkLogStampFormat "(%a %b %d %H:%M:%S %Y) "
>  JkOptions +ForwardKeySize +ForwardURICompat
> -ForwardDirectories
>  JkRequestLogFormat "%w %V %T"
>  JkMount /examples/servlet/* worker1
>  JkMount /examples/*.jsp worker1
> 
> 
> 
> my worker2.properties file
> 
> # Define 1 real worker using
> ajp13worker.list=worker1 
> # Set properties for worker1
> (ajp13)worker.worker1.type=ajp13 
> worker.list=worker1
> worker.worker1.host=localhost 
> worker.worker1.port=8009 
> worker.worker1.lbfactor=50 
> worker.worker1.cachesize=10 
> worker.worker1.cache_timeout=600 
> worker.worker1.socket_keepalive=1 
> worker.worker1.socket_timeout=300 
> 
> 
> 
> 
> What I wind up is protocol errors in my catalina.out
> file
> 
> Ajp13Connector active threads=6
>
java.lang.ThreadGroup[name=Ajp13Connector[8009],maxpri=10]
>
> Thread[Ajp13Connector[8009],5,Ajp13Connector[8009]]
>
>
Thread[Ajp13Processor[8009][0],5,Ajp13Connector[8009]]
>
>
Thread[Ajp13Processor[8009][1],5,Ajp13Connector[8009]]
>
>
Thread[Ajp13Processor[8009][2],5,Ajp13Connector[8009]]
>
>
Thread[Ajp13Processor[8009][3],5,Ajp13Connector[8009]]
>
>
Thread[Ajp13Processor[8009][4],5,Ajp13Connector[8009]]
> ===
> BAD packet 256
> In: : [B@958bf9 4/843
> 01 00 03 47 00 00 00 00 00 00 00 00 00 00 00 00  |
> ...G
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  |
> 
> 
> 
> 
> 
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RE: Tomcat using VERY LARGE Memory (URGENT!!!!!!!!!)

[Ming Zhao]

Can it work on Win2k? Thanks,

--- Luc Santeramo <[EMAIL PROTECTED]>
wrote:
> Hi,
> 
> there is a way to limit memory use by tomcat
> just specify it in your CATALINA_OPTS env var
> here is mine
> CATALINA_OPTS="-server -Xmx220m -Xms220m
> -Dfile.encoding=UTF-8"
> 
> these are jvm parameter I think
> Xmx is the max mem to use and Xms is the min
> 
> hope this helps
> 
> Luc
> 
> At 11:03 13/12/2002  +0100, Marco Bucciarelli wrote:
> >Hi, I have also this problem/doubt: how to limit
> the number of threads
> >opened by Tomcat?
> >I tried to change a lot of settings in server.xml
> but nothing influenced
> >that number.
> >I have always 46 new java processes opened by
> Tomcat.
> >
> >I did this test (Linux RedHat 7.0, Tomcat 4.1.12,
> Apache 1.3.12, Sun JDK
> >1.4.1_01):
> >- reboot the machine, with tomcat service disabled
> at startup
> >- the free command gives me 221.196Kb of memory
> free (Total 256Mk)
> >- start tomcat
> >- I found 46 new java processes
> >- the top command says that every process uses 56Mb
> of RAM
> >- the free command now gives me 44.436Kb free
> >
> >All this without accessing to Apache or Tomcat,
> only before and after the
> >start of Tomcat!
> >
> >Of course I do not have a memory usage of 46*56Mb,
> but I do not have only
> >56Mb of RAM used by Tomcat (after the start I have
> only 44Mb of memory free,
> >before the start I had 220Mb free).
> >
> >What is happening?
> >
> >Bye,
> >Marco.
> >
> >
> >From: "Galbayar"
> >Subject:  Re: Tomcat using VERY LARGE Memory
> (URGENT!)
> >Date:  Tue, 12 Mar 2002 10:26:21 +0800
> >
> >it is top result and every java process using 59M
> RAM
> >i'm use mod_jk integrated Tomcat with Apache and
> Tomcat
> >top result is :
> >
> >
> >110 processes: 109 sleeping, 1 running, 0 zombie, 0
> stopped
> >CPU states:  2.3% user,  1.9% system,  0.0% nice,
> 95.6% idle
> >Mem:  1028860K av,  938924K used,   89936K free,   
>  116K shrd,
> >139628K
> >buff
> >Swap: 1020116K av,   0K used, 1020116K free
> >680228K
> >cached
> >
> >   PID USER PRI  NI  SIZE  RSS SHARE STAT %CPU
> %MEM   TIME
> >COMMAND
> >17862 root  15   0  1092 1092   836 R 1.7 
> 0.1   0:00 top
> >17293 root  13   0 28176  59M  9576 S 1.5 
> 2.7   0:01 java
> >17272 root  10   0 28176  59M  9576 S 0.1 
> 2.7   0:02 java
> >
> >and see MEM usage total RAM is 1028860K  938924K
> used,   89936K free
> >
> >
> >- Original Message -
> >From: "Filip Hanik" <[EMAIL PROTECTED]>
> >To: "Tomcat Users List"
> <[EMAIL PROTECTED]>
> >Sent: Tuesday, March 12, 2002 10:14
> >Subject: RE: Tomcat using VERY LARGE Memory
> (URGENT!)
> >
> >
> > > what you are seeing is that "ps" or "top" lists
> one process for
> >each
> >thread
> > > in Tomcat.
> > > your tomcat is running 59M all together
> > >
> > > Filip
> > >
> > > ~
> > > Namaste - I bow to the divine in you
> > > ~
> > > Filip Hanik
> > > Software Architect
> > > [EMAIL PROTECTED]
> > > www.filip.net
> > >
> > > >-Original Message-
> > > >From: Galbayar [mailto:[EMAIL PROTECTED]]
> > > >Sent: Monday, March 11, 2002 6:04 PM
> > > >To: Tomcat Users List
> > > >Subject: Tomcat using VERY LARGE Memory
> (URGENT!)
> > > >
> > > >
> > > >Hello all
> > > >Here is part of top output. Is it usual that
> java
> > > >processes eat all of memory? ? At now there are
> 50 java
> >processes started
> > > >that running tomcat and each of them uses 59M
> memory. There
> >is running
> > > >apache
> > > >server with tomcat 4 and mysql. OS is Redhat7.2
> x86 . JDK
> >1.4 is
> >installed.
> > > >how to solve this problem?
> > > >
> > > >106 processes: 105 sleeping, 1 running, 0
> zombie, 0 stopped
> > > >CPU states: 0.3% user, 3.4% system, 0.0% nice,
> 96.1% idle
> > > >Mem: 1028860K av, 1022352K used, 6508K free,
> 116K shrd,
> >129004K buff
> > > >wap: 1020116K av, 0K used, 1020116K free
> 762320K cached
> > > >
> > > >3201 root 9 0 60692 59M 28164 S 0.0 5.8 0:03
> java
> > > >3202 root 8 0 60692 59M 28164 S 0.0 5.8 0:00
> java
> > > >3203 root 9 0 60692 59M 28164 S 0.0 5.8 0:35
> java
> > > >3204 root 9 0 60692 59M 28164 S 0.0 5.8 0:00
> java
> > > >3205 root 9 0 60692 59M 28164 S 0.0 5.8 0:01
> java
> > > >3206 root 9 0 60692 59M 28164 S 0.0 5.8 0:00
> java
> > > >3207 root 9 0 60692 59M 28164 S 0.0 5.8 0:00
> java
> > > >3208 root 9 0 60692 59M 28164 S 0.0 5.8 0:00
> java
> > > >3209 root 9 0 60692 59M 28164 S 0.0 5.8 0:03
> java
> > > >
> > > >
> > >
> > >
> > > --
> > > To unsubscribe:    >[EMAIL PROTECTED]>
> > > For additional commands:  >[EMAIL PROTECTED]>
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> > >
> > >
> > >
> >
> >
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> >
> >
> >
> >--
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> 
> >For addi

Apache,Tomcat and JK configuration problem

[Ming Zhao]

Hi,

When I finished the configuration of Apache http
2.0.4, Tomcat 4.1.12 LE and mod_jk2-2.0.4, I got the
information:
org.apache.jk.server.JkMain start
APR not loaded, disabling jni components:
java.io.IOException: no jkjni in java.library.path
org.apache.jk.server.JkMain start
Jk running ID=0 time=0/40
config=C:\Tomcat\conf\jk2.properties.

I did anything as some suggestions getten from this
mail list. I don't know why APR cannot be loaded. So
it cannot deal with jsp file with Tomcat. Anyone help
me? It took me at leat two weeks to try solving this
problem. Thanks very much,

CMing

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RE: How to set JVM memory size?

[Ming Zhao]

at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:431)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:386)
at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:537)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:533)
at java.lang.Thread.run(Thread.java:484)


Do you have any suggestion?
Ming


--- Jeremy Joslin <[EMAIL PROTECTED]> wrote:
> It's important to realize that this is setting the
> size of the Java heap
> within the JVM (which sounds like what you're
> looking for) and not the
> actual size of the JVM itself.  Also note that
> you're not always going
> to get the best performance out of your app by using
> a large heap size
> because while it decreases the frequency of GC's the
> time each GC takes
> is going to increase (more to collect).  So, and I
> know I'm not the
> first to say this, play around with the different
> settings until you
> find the one that suits your app.
> 
> Jeremy
> 
> > -Original Message-
> > From: Brandon Cruz [mailto:[EMAIL PROTECTED]]
> > Sent: Thursday, December 05, 2002 10:27 AM
> > To: Tomcat Users List
> > Subject: RE: How to set JVM memory size?
> > 
> > Set an environment variable called JAVA_OPTS and
> set your max and min
> to
> > whatever you want like this...
> > 
> > -Xmx512m -Xms256m
> > 
> > Brandon
> > 
> > -Original Message-
> > From: Ming Zhao [mailto:[EMAIL PROTECTED]]
> > Sent: Thursday, December 05, 2002 11:49 AM
> > To: [EMAIL PROTECTED]
> > Subject: How to set JVM memory size?
> > 
> > 
> > Hi,
> > 
> > I have a question to seek for your help. How do I
> set
> > the JVM memory size? I use Apache Tomcat4.1.16 and
> > J2SDK1.3. Now it seems that I have a problem of
> not
> > enough memory to implement the java bean. I want
> to
> > set JVM memory with writing some commands to some
> > file. So Tomcat can activate J2SDK with set memory
> > size. How to do that?
> > 
> > Thanks in advance,
> > Ming
> > 
> > __
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> >
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> > 
> > 
> > 
> > --
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How to set JVM memory size?

[Ming Zhao]

Hi,

I have a question to seek for your help. How do I set
the JVM memory size? I use Apache Tomcat4.1.16 and
J2SDK1.3. Now it seems that I have a problem of not
enough memory to implement the java bean. I want to
set JVM memory with writing some commands to some
file. So Tomcat can activate J2SDK with set memory
size. How to do that?

Thanks in advance,
Ming

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Error on Java Bean running

[Ming Zhao]

I use Tomcat 4.1.16 as the server. And when I run java
bean and got an error. It's a manufacturing-system
simulation java bean. On the website, click one
button to run the simulation. I can set the beginning
simulation time (e.t.,from 01/01/2000 to current
clicking time). It can work well for short running
period of time, but error for early beginning time
(e.t., 1/1/1998).

And if set the beginning time earlier, the server
shutdowns. But I run the similar simulation model
offline (with JBuiler 6) with longer running period
of time (from 1/1/1990 to current time). And it works
well and no such errors.

Can you help me figure out the problem? Is it possible
that there is some problem for memory allocation? 

The error is as below:


HTTP Status 500 - 
---type
Exception report

message 

description The server encountered an internal error
() that prevented it from fulfilling this request.

exception 

org.apache.jasper.JasperException
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:248)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
at
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:260)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(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.catalina.core.StandardContext.invoke(StandardContext.java:2415)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(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:431)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:386)
at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:537)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:533)
at java.lang.Thread.run(Thread.java:484)


root cause 

javax.servlet.ServletException
at
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:533)
at
org.apache.jsp.simul_jsp._jspService(simul_jsp.java:317)
at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:137)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:204)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
at
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at
org.

StackOverflowError when running java bean

[Ming Zhao]

Hi there,

I met a problem when running java bean online. Please
take a look and give some advice.

It's a manufacturing-system simulation java bean. On
the website, click one
button to run the simulation. I can set the beginning
simulation time (e.t.,
from 01/01/2000 to current clicking time). It can work
well for short
running period of time, but error for early beginning
time (e.t., 1/1/1998).
The error is:


type Exception report

message Internal Server Error

description The server encountered an internal error
(Internal Server Error)
that prevented it from fulfilling this request.

exception

javax.servlet.ServletException
at
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImp
l.java:457)
at
org.apache.jsp.simul$jsp._jspService(simul$jsp.java:424)

at java.lang.Thread.run(Thread.java:484)

root cause
java.lang.StackOverflowError
at
java.io.ObjectOutputStream$HandleTable.findWireOffset(ObjectOutputStream.jav
a:2344).


And if set the beginning time earlier, the server
shutdowns. But I run the
similar simulation model offline (with JBuiler 6) with
longer running period
of time (from 1/1/1990 to current time). And it works
well and no such
errors.
Can you help me figure out the problem? Is it possible
that there is some bug for Tomcat 4.0.1? Thanks,

Minger


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