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Field / Description
Tuning Formula or Default Value
(Default value is provided if there is no
tuning formula)
Enable Heap Dump on Out of Memory
Select True from the drop-down list if you
want to generate a heapdump when the
container JVM encounters an out of memory
error.
Heapdumps are useful for troubleshooting
memory-related issues since they contain all
the live objects used by the Java application.
With this information, the objects that are
using large amounts of memory can be
identified. The contents of a heapdump can
also help a user understand why objects
cannot be freed by the Garbage Collector.
By default, the dump file is generated from
where the JVM was started (the
install_dir/bin directory).
If you select False from the drop-down list,
heapdumps are not generated when the
container JVM encounters an out of memory
error.
tuning.properties Property:
ENABLE_HEAP_DUMP_OOB_CONTAINER
Default value: True
Enable Heap Dump on Sigquit/Ctrl-break
Note: This field is not supported in the 1.6
version of the Sun JDK. It will display if you
are using the IBM JDK.Select True from the
drop-down list if you want to request a
heapdump for the container JVM using
Sigquit command or pressing Ctrl+Break
for container JVM.
By default, the dump file is generated from
where the JVM was started (the
install_dir/bin directory).
If you select False from the drop-down list,
heapdumps are not generated if you run
Sigquit command or press Ctrl+Break .
tuning.properties Property:
ENABLE_HEAP_DUMP_
SGTQCRTLBRK_CONTAINER
Default value: True
Performance Management 147