Heap Dump Capture

jmap

A command-line tool included in the JDK, used to capture heap dumps of a running Java process. It outputs a binary heap dump file for analysis.

VisualVM

A GUI-based monitoring and diagnostic tool included with the JDK. Allows capturing heap dumps, monitoring memory usage, and analyzing memory leaks in real time.

jcmd

A versatile command-line tool included in the JDK. Captures heap dumps and performs other diagnostic operations for JVM processes.

Eclipse MAT (Memory Analyzer Tool)

A powerful GUI-based tool for analyzing heap dumps. Provides detailed insights into memory leaks, object retention, and usage patterns.

IntelliJ IDEA Profiler

A built-in profiler in IntelliJ IDEA (Ultimate Edition) for capturing and analyzing heap dumps during development.

YourKit Java Profiler

A commercial Java profiler that captures and analyzes heap dumps, providing advanced features like memory leak detection and object retention graphs.

AppDynamics

An APM tool for enterprise systems that captures heap dumps as part of its diagnostics for memory usage and leak analysis.

Dynatrace

An enterprise APM solution that captures heap dumps for applications under high memory pressure and integrates with overall system monitoring.

Kill -3 Command

Sends the SIGQUIT signal to the JVM process on Unix-based systems to trigger heap dump generation, typically written to the application logs.

jhat (Java Heap Analysis Tool)

A deprecated but still usable command-line tool in the JDK to analyze heap dump files in combination with jmap.

JVM Options (-XX:+HeapDumpOnOutOfMemoryError)

A JVM option to automatically generate a heap dump when an OutOfMemoryError occurs, typically for production debugging.