WAS TOOLS: Generate Heap Dump

Before Generating Heap Dump , you've got an inspiration concerning heap dump

What is Heap Dump and why you generate that?
Heap Dump is the snap shot of Heap memory at the time of dump creation. It contains info like size and address of all objects additionally because the address of objects that it references.
Before generating the heap dump we need to enable the garbage collection to get only live objects information in dump. by default whenever out of memory exception occurs websphere application server create heap dump in profiles home directory.

From WebSphere Application Server (WAS V.8) onwards we will generate the Dumps (Heap Dump and Thread Dumps) from console. They add an additional feature in trouble shooting that's Java and Cores in console. click Java and core Dumps in trouble shooting, it'll show all the server instances in the server, choose the actual server from the list and click the buttons (Heap Dump, Thread Dump, Core Dump).

Screen shoots for Heap Dumps Generation from WAS Console in WAS V8.0

Select the Server instance from the list of servers and generate Dumps (Heap Dump/Thread Dump) what ever from console

All the Dumps are stored in WAS profile root directory like below

In typically generate Dumps in WebSphere Application Server V7.0 by command prompt to follow the bellow method.
Go to profile bin directory from command prompt like bellow
WAS_Profileroot\bin>wasadmin.bat hostname soap port nummber conntype soap
EX: wsadmin.bat localhost 8880 conntype soap
It will ask to provide the authentication details about the server to access the server

you will realize the change like bellow
control can goes C:\\IBM\WEBSPHERE\AppSrv01_Profile\bin to wasadmin
then provide the bellow command
wsadmin>set jvm [$AdminControl completeObjectName type=JVM,process=server1,*]

It will get the complete details about JVM like node name, server name, platform with version.
then provide bellow the command to get HeapDumps
wsadmin>$AdminControl invoke $jvm henerateHeapDump