Use this task to generate heap dumps manually. This function is not supported on when using a Sun Java virtual machine (JVM) which includes WebSphere Application Server running on HP-UX and Solaris operating systems.
Although heap dumps are generated
only in response to a detected memory leak, you must understand that generating
heap dumps can have a severe performance impact on WebSphere Application Server
for several minutes. When generating multiple heap dumps manually for memory
leak analysis, make sure that significant objects are leaked in between the
two heap dumps. This approach enables problem determination tools to identify
the source of the memory leak.
The WebSphere Application Server wsadmin tool provides the ability to run scripts. You can use the wsadmin tool to manage a WebSphere Application Server installation, as well as configuration, application deployment, and server runtime operations. WebSphere Application Server supports the Jacl and Jython scripting languages only. To learn more about the wsadmin tool, see the Starting the wsadmin scripting client topic.
After running the wsadmin command, the file name of the heap dump is returned. For more information on finding heap dumps, refer to the Locating and analyzing heap dumps topic. When you have a couple of heap dumps, use a number of memory leak problem determination tools to analyze your problem.