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Date: Tue, 2 Feb 2010 15:53:42 -0500
Message-ID: <2c0ebf0c1002021253i6f8a1938y35d89ce39f1b3ba3@mail.gmail.com>
Subject: Still unable to get a heap dump from Tomcat running on Windows as a
	service
From: Laird Nelson <ljnelson@gmail.com>
To: Tomcat Users List <users@tomcat.apache.org>
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I am still unable to get Tomcat to dump heap when it encounters an
OutOfMemoryError.  My StackOverflow topic sums up what I've tried so far:
http://stackoverflow.com/questions/2172220/can-i-get-tomcat-running-as-a-service-to-dump-heap

I'm using the graphical program that comes up when you select "Monitor
Tomcat" from the Windows Start Menu.  I assume this is TomcatW.exe?

I have Tomcat 6.0.20 running as a service under the default local user
account, set to be allowed to interact with the desktop (I don't know if
this is necessary; I've tried it both ways with no effect on the outcome).

I've attempted to switch the startup mode to "java" from "jvm" to see if
that would make a difference, but in that case the service simply won't
start.

I've specified -XX:HeapDumpPath=C:\crap, and -XX:HeapDumpPath=C:/crap to no
avail.  C:\crap is world readable and writable.

I've set the working path for the Startup and Shutdown tabs to C:\crap and
C:/crap with no effect.

I've set memory to a minimum of 512 and a maximum of 1024 MB.

Finally, following the example of what was already there in the text box, I
entered the JVM options one per line.  The tomcat documentation says to
enter them separated by either a "#" or a ";", but I suspect that the GUI
tool may be taking them and turning line breaks into "#" characters for me.

Does anyone have any other suggestions to try before giving up on Tomcat in
favor of either Jetty or (God help me) JBoss?

Thanks much,
Laird

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