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

Environment variables and Heapdump

Although the preferred mechanism for controlling the production of Heapdumps is now the use of dump agents with -Xdump:heap, you can also use the previous mechanism, environment variables.

The following table details environment variables specifically concerned with Heapdump production:

Environment Variable	Usage Information
IBM_HEAPDUMP IBM_HEAP_DUMP	Setting either of these to any value (such as true) enables heap dump production by means of signals.
IBM_HEAPDUMPDIR	The default location into which the Heapdump will be written.
JAVA_DUMP_OPTS	Use this environment variable to control the conditions under which Heapdumps (and other dumps) are produced. See Dump agent environment variables for more information .
IBM_HEAPDUMP_OUTOFMEMORY	By setting this environment variable to false, you disable Heapdumps for an OutOfMemory condition.
IBM_JAVA_HEAPDUMP_TEST	Use this environment variable to cause the JVM to generate both phd and text versions of Heapdumps. Equivalent to opts=PHD+CLASSIC on the -Xdump:heap option.
IBM_JAVA_HEAPDUMP_TEXT	Use this environment variable to cause the JVM to generate a text (human readable) Heapdump. Equivalent to opts=CLASSIC on the -Xdump:heap option.

Parent: Using Heapdump

Error 404 - Not Found

The document you are looking for may have been removed or re-named. Please contact the web site owner for further assistance.