Heapdump

Analyzing Heap of JAVA-Process i.e. Wildfly

    jmap -heap <pid>

will show the current heap usage.

The full heap can be dumped with

    jmap -dump:format=b,file=<file> <pid>

Please see https://docs.oracle.com/javase/7/docs/technotes/tools/share/jmap.html.

The heapdump can be analyzed with MemoryAnalyingTool (MAT) https://www.eclipse.org/mat/.