Eclipse Memory Analyzer
The Memory Analyzer is Open Source!
The Memory Analyzer is an Open Source Project at Eclipse (http://www.eclipse.org/mat/) licensed under the Eclipse Public License. Check out our blog, the WIKI and the forum. If you find a bug, please file it against Bugzilla.
While the open source version contains all the core features, the SAP Netweaver Extensions provide names for NetWeaver deployment units and information about caches, sessions, etc. The extensions are helpful if you analyze heap dumps from NetWeaver Java Server systems.
What does the Memory Analyzer do?
The Memory Analyzer was developed to analyze productive heap dumps with hundreds of millions of objects. Once the heap dump is parsed, you can re-open it instantly, immediately get the retained size of single objects and quickly approximate the retained size of a set of objects. The Analyzer is (relatively) low on resource consumption, so you can analyze multi-GB heap dumps on 32 bit boxes.
What heap dumps are supported?
SAP Memory Analyzer supports by default HPROF binary heap dumps, a de-facto standard of Sun supported also by other vendors:
Sun, SAP and HP JDK/JVM from version 1.4.2_12 and 5.0_7 and 6.0 upwards
Memory Analyzer can also work with system dumps and PHD dumps from various IBM platforms. For the purpose one has to install the DTFJ implementation into the Memory Analyzer. More details are available here http://wiki.eclipse.org/index.php/MemoryAnalyzer#System_Dumps_and_Heap_Dumps_from_IBM_Virtual_Machines. SAP Notes for the different IBM platfomrs are available on the "How can I get a heap dump" page.
Minimum-required versions are:
IBM JDK 1.4.2 SR12, 5.0 SR8a and 6.0 SR2. Read more here.
On what platforms does the SAP Memory Analyzer run?
The Memory Analyzer is available as a standalone tool (RCP application based on Eclipse 3.5) for all platforms that Eclipse 3.5 is available. The tool requires a 1.5 JDK. Alternatively one can install the Memory Analyzer features and plugins from an update site into an existing Eclipse IDE. In this form it is compatible with Eclipse 3.4 and higher releases. We greatly appreciate your feedback regarding platforms other than Windows as our scarce resources let us primarily target Windows.
How can I get a heap dump?
Please see here for details.