IBM User Guide for Java V7 on Windows > Troubleshooting and support > Using diagnostic tools > Using Heapdump

Getting Heapdumps

By default, a Heapdump is produced when the Java™ heap is exhausted. Heapdumps can be generated in other situations by use of -Xdump:heap.

To see which events will trigger a dump, use -Xdump:what. See Using dump agents for more information about the -Xdump parameter.

You can also use the com.ibm.jvm.Dump.HeapDump() method API in your application code, to generate a Heapdump programmatically.

By default, Heapdumps are produced in PHD format. To produce Heapdumps in text format, see Enabling text formatted ("classic") Heapdumps.

Environment variables can also affect the generation of Heapdumps (although this is a deprecated mechanism). See Environment variables and Heapdump for more details.

• Enabling text formatted ("classic") Heapdumps
  The generated Heapdump is by default in the binary, platform-independent, PHD format, which can be examined using the available tooling.

Parent: Using Heapdump

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