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javaprofilingjvisualvm

Java VisualVM Enable Heap Dump on OOME


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


Solution

  • 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: