During the research for this session I examined the examples delivered with the Weblogic server. You can find them in your local installation at
There are two cluster examples available. First one is about a statefull session bean and the second one about HTTP Session Failover.
If you run the statefull session bean example, you will notice that you don't see any message about a happening failover. I need to digg into this a bit deeper, cause the documentation states, that you should (!) see a message. Anyway: If you would like to find out, on which node you are running, you can simply use a weblogic server MBean to find out:
InitialContext ic = new InitialContext();
MBeanHome mbeanHome = (MBeanHome) ic.lookup("weblogic.management.home.localhome");
String nodeName = mbeanHome.getMBeanServer().getServerName();
And yes, I know, that the MBeanHome interface is deprecated since the 18.104.22.168 ;) But it's a quite short way to figure it out. It was replaced by standard JMX design patterns in which clients use the javax.management.MBeanServerConnection interface to discover MBeans, attributes, and attribute types at runtime.