Configure Java VisualVM with Websphere Application Server

Configure Java VisualVM with Websphere Application Server

Hi everyone,

Since Version 1.5, Sun’s JDK includes a nice profiling tool called VisualVM, intended to be used by developers, sysadmins and any person that needs to troubleshoot and profile memory consumption in Java applications and servers.  To run it, just execute the file jvisualvm located in $JAVA_HOME/bin. With VisualVM you can:

1.Monitor heap usage

2.Monitor CPU usage

3.Monitor Threads

4.Initiate garbage collections

5.Profile CPU and memory

6.And more…

To profile local applications is pretty easy, since you only need to start it and it’ll detect all Java-based applications and you’ll be able to see the Heap/PermGen usage, the number of threads used, the classes loaded by the class loader and other stuff.It can also be used to monitor IBM JVM’s. VisualVM is not able to connect to the IBM JVM locally. JMX must be used instead. To enable JMX monitoring on the IBM JVM follow the bellow procedure

Procedure:

From Websphere Application Server Side:

On the admin console Click on Servers->Server types->WebSphere application servers->server1->Process definition->Java Virtual Machine, add the following line into the field of Generic JVM Argument (note that the first system property is equal to nothing and no equal sign for the second system property):

-Djavax.management.builder.initial= -Dcom.sun.management.jmxremote

Add or uncomment the following three lines in fileWAS_HOME/java/jre/lib/management/management.properties

com.sun.management.jmxremote.port=1099

com.sun.management.jmxremote.authenticate=false

com.sun.management.jmxremote.ssl=false

com.sun.management.jmxremote.local.only=false

From Java  VisualVM Side:

Go to the JAVA_HOME/bin and execute following command

jvisualvm.exe

Right click on the Local and clock on Add JMX connection

 Insert the jmx port wich we have mentioned earlier in management.properties file i.e 1099

Double click on newly added jmx connection i.e localhost:1099 and we will get the monitoring console available for check

We can use the different tabs for monitoring different areas.