Answer Posted / vamsee

heart beat is a signal,this signals are sent by objects.

think that there are 5 servers.(the servers with in the
cluster to communicate each other they use multicast ip)
if u add one objet to any oneof these server that object
will send a heart beat signal to multicast ip from there
remainig servers will receive that signals and update thire
jndi tree.from this only each server will known the helth
of each object.if the object is stop sending heart beats
the servers treat that that object is failed

What is meant by domain, adminserver, managedserver?

926

---

What is cluster stub?

921

---

Can I set the deployment order for application modules? For standalone modules?

935

---

How do stubs function inside weblogic server cluster at the time of failure?

950

---

What technologies are included in j2ee?

889

---

How do I publish an xml message? : BEA Weblogic

1023

---

Tell me what are the steps involved in configuring the jms?

915

---

How can classpath be set?

1052

---

What is a thread dump?

968

---

Java-corba integration: rmi-iiop or java idl? : BEA Weblogic

888

---

What are the advantages node manager?

918

---

What is the difference between multicast and unicast?

851

---

When should I use multicast subscribers? : BEA Weblogic

934

---

Explain the performance tuning in jvm, jdbc, jms?

886

---

What are the enhancements in ejb 2.0 specification with respect to asynchronous communication?

959

---