The JMX based graphical tool jconsole is used to display thread usage, memory consumption, and class loading details. For more information about this tool, see http://java.sun.com/j2se/1.5.0/docs/guide/management/jconsole.html.
To use the tool, you need to:
1. Set the JVM option -Dcom.sun.management.jmxremote in server.xml.
Use the Admin Console or CLI to set this JVM option. For more information, see Configuring Your JVM in Sun Java System Web Server 7.0 Update 7 Administrator’s Guide.
2. Start jconsole.
The binary is available in $JAVA_HOME/bin directory. Specify the pid in the command line when invoking the tool. The pid of the Web Server process is obtained either from the log file or by locating the child webservd process.
You may also invoke jconsole without the pid argument and then select the appropriate VM from the window displaying available VMs.