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From Stefán F. Stefánsson <>
Subject RE: Crashing tomcat
Date Thu, 01 Mar 2001 11:04:11 GMT

Are you guys running windows?  If so, are you getting the popup window
with the red cross and an ok button saying that some memory address
can't be read?

If that is the case I would bet that you have found a bug in the JVM.
The reason for that being that Java doesn't have any pointers so there
is no way that any of your code could generate this message.  Java would
not allow you to write into an illegal memory address, this window would
only appear if the JVM was doing something like that (or perhaps the
JDBD driver, depending on what type of driver you are using).

Are you guys using any native code (dll's or system calls)?  What type
of JDBC driver are you using (Type 4 is pure java and should therefore
not be able to cause this behavior but Type 1 (and maybe Type 2 too) may
rely on native code and could therefore cause the error message to

Hope this gives you guys a hint,
	Regards, Stefan.

-----Original Message-----
From: dick []
Sent: 1. mars 2001 10:50
Subject: Re: Crashing tomcat

Hi Christopher,

I also use some taglib to query a database (mysql) and then show the
in html back.
It occasionally crash, I don't know the reason too. So, let's figure the
reason out !


Dick Poon
----- Original Message -----
From: "Christopher Miller" <>
To: <>
Sent: Thursday, March 01, 2001 6:16 PM
Subject: Crashing tomcat

> I have written a simple servlet to access a database and place the
> results in an html page. However this is regularly crashing the tomcat
> server.
> I have tomcat and apache running together with the basic config files,
> but I am not sure where the fault lies (servlet or config file).
> the error on tomcat crashing is in the form of
> "instruction at xxx referenced memory at xxx. the memory could not be
> written"
> Any help would be well received.
> Chris
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