Dump Java Heap when OutOfMemoryError occurs

• Add argument

  -XX:+HeapDumpOnOutOfMemoryError

  and it will dump to java_pid.hprof file in the working directory.
• Add argument

  -XX:HeapDumpPath=/path/to/output-dir

  to specify the output directory for the dump file. For example:

  -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=$HOME/JavaHeapDumps/

see also

• Oracle Documentation
• Using HeapDumpOnOutOfMemoryError parameter for heap dump for JBoss