thread dump analyzer Archive

Analyzing WebSphere Thread Dump

We can take thread dump on WAS using wsadmin tool in the following way.

D:\IBM\WebSphere\AppServer\profiles\ProcessCommander\bin>wsadmin.bat
WASX7209I: Connected to process “server1” on node WKHANFXPNode02 using SOAP conn
ector; The type of process is: UnManagedProcess
WASX7029I: For help, enter: “$Help help”
wsadmin>set jvm [$AdminControl completeObjectName type=JVM,process=server1,*]
WebSphere:name=JVM,process=server1,platform=proxy,node=WKHANFXPNode02,j2eeType=J
VM,J2EEServer=server1,version=6.1.0.0,type=JVM,mbeanIdentifier=JVM,cell=WKHANFXP
Node01Cell,spec=1.0
wsadmin>$AdminControl invoke $jvm dumpThreads

This will create a java core file in the following directory

D:\IBM\WebSphere\AppServer\profiles\ProcessCommander

javacore.20110511.174141.9628.txt

We need to download IBM Thread Dump Analyzer from here

Start the tool using the following command

E:\tools\jca412>java -Xmx515m -jar jca412.jar

Open the thread dump from

File > Open Thread Dumps

Then click on Analysis > Thread Details.

This will give you details of all the threads.