Java VisualVM Enable Heap Dump on OOME

java profiling jvisualvm
Mike picture Mike · Nov 29, 2011 · Viewed 15.2k times · Source

According to documentation one could automatically take a heap dump when the application encounters an OutOfMemoryException.
After OutOfMemoryException process just disappear from left menu.
How does this feature works in VisualVM?

Thanks.

C:\work\temp>java -XX:HeapDumpPath=c:/work/temp/file.hprof -XX:+HeapDumpOnOutOfMemoryError -jar example.jar

Answer

Eli Acherkan picture Eli Acherkan · Nov 29, 2011

As far as I know, that option in JVisualVM is equivalent to specifying -XX:+HeapDumpOnOutOfMemoryError as a JVM parameter. This causes the JVM to create a heap dump file when it encounters an OutOfMemoryError. This file can be then loaded into JVisualVM (or into a profiler) and analyzed there. The directory where the file is stored is defined by the -XX:HeapDumpPath parameter.

See also:

Related questions

How to find the default JMX port number?

I am running a Java application on Java 6 VM on a remote Windows XP, on which I can run jvisualvm.exe to connect to the running application automatically. Now I need to connect that application from my local computer, but …

Read More
How to find memory leaks using visualvm

I suspect we have a major memory leak in our ActiveMQ connection bridge - we're seeing typical memory leak patterns (app loads fine, slows down if it runs for prolonged periods of time or is restarted over and over again …

Read More
Java VisualVM does not show/list my tomcat java process

I am using jdk64 and my java version is 1.6.0_24. I am running both (Tomcat java process and VisualVM) processes as Administrator on Windows Server 2008. Tomcat is running with -Xmx7196m, where as jvisualvm is running with -Xms24m and -Xmx256…

Read More