I recommend you use MAT (http://www.eclipse.org/mat/downloads.php) to analyze your heap dumps. It has the ability to load significantly large heap dumps on machines will limited resources. I have opened 4G heap dumps with MAT using a 2G heap. I'm sure I could have used less, but I didnt need to.
The other option is to use jvisualvm (it comes with your Java6 JVM) if the process is still running. On Wed, Feb 24, 2010 at 6:18 AM, Caldarale, Charles R <chuck.caldar...@unisys.com> wrote: >> From: Jonathan Soons [mailto:jso...@juilliard.edu] >> Subject: More heap space for jhat >> >> When I run jhat on this I get: >> Exception in thread "main" java.lang.OutOfMemoryError: Java heap space >> >> Is there a way to make jhat use more memory? I cannot find a command >> line option that does this. > > To quote from the Sun documentation on jhat: > > -J<flag> > Pass <flag> to the Java virtual machine on which jhat is run. For example, > -J-Xmx512m to use a maximum heap size of 512MB. > > http://java.sun.com/javase/6/docs/technotes/tools/share/jhat.html > > The -J option is the standard mechanism for most if not all of the JDK tools. > > - Chuck > > > THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY > MATERIAL and is thus for use only by the intended recipient. If you received > this in error, please contact the sender and delete the e-mail and its > attachments from all computers. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
