.

Considering this, how do I make a heap dump?

There are several ways to generate a java heap dump:

1. Use jmap -dump option to obtain a heap dump at runtime;
2. Use jconsole option to obtain a heap dump via HotSpotDiagnosticMXBean at runtime;
3. Heap dump will be generated when OutOfMemoryError is thrown by specifying -XX:+HeapDumpOnOutOfMemoryError VM option;
4. Use hprof.

Beside above, what is heap dump? A heap dump is a snapshot of the memory of a Java™ process. The snapshot contains information about the Java objects and classes in the heap at the moment the snapshot is triggered. Class loader, name, super class, and static fields. Garbage collection roots. Objects defined to be reachable by the JVM.

In this way, how do you Analyse a memory leak for heap dump?

To track down a memory leak, you'll need a "heap dump" with a summary of the live objects in a leaky process. To record a dump, first run jps to find the process's PID, then run jmap -dump:live,format=b,file=(dumpfile) (pid) .

Why heap dump is generated?

The JVM generates the Heap Dump file in the specified file path. Sometimes we might require Heap Dump in an on-demand basis. To troubleshoot the memory consumption, we require Heap Dump. If you have not specified the HeapDumpPath, then the JVM generates the file where the JAVA process is running.