## Browsing a Heap Dump

See Also

A
captures profiling data at a specific point in time. You can load and browse any heap dump saved on your local system. You do not need to be running a profiling session to load and browse a heap dump.

1. Choose Profile > Load Heap Dump in the main menu.
2. Locate the heap dump on your system and click Open.

When you load a heap dump, the heap dump opens in the HeapWalker in the Heap window.

The HeapWalker enables you to evaluate Java heap contents and search for memory leaks. You can view the following:

- List of classes present on the heap. For each class you can see the number of instances of that class and total size of all instances.
- List of instances of each class. You can see individual instances and their size (size of instances of the same class varies only for arrays).
- Fields of each instance or class. You can browse (static) fields to identify individual instances by field values and determine dependencies among them.
- References to each instance. You can browse instances or classes holding reference to a particular instance to find unnecessary references and discover memory leaks.

### Browse Heap Dump

When the heap dump is loaded and open in the Heap window, use the following tabs to view information about the heap dump:

- Summary. This tab displays general information about the heap dump such as total numbers of classes, instances. The Summary tab also provides you with information about the environment and system properties of the machine where the heap dump was taken.
- Classes. This tab displays a list of classes with information about the number of instances of the class and total size of the instances. You can also open the Static Fields browser to browse the static fields of each class. To open the Static Fields browser, click the Static Fields button in the HeapWalker toolbar.

  You can double-click any class in the classes list to view the instances of that class in the Instances tab. Alternatively, you can right-click a class and choose Show in Instances View.

- Instances. This tab displays the instances for a class that you select in the Classes tab. For each instance, you can do the following:
  - Select an instance to browse the fields of the instance in the the Field Browser.
  - Select an instance to browse the references to the instance in the Reference Browser.

  You can hide or reveal the individual windows by using the Instances button, the Fields button and the References button in the toolbar.

See Also
  Taking a Heap Dump
  Working with Live Profiling Results

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