Hi As per you direction i ve verified my logging level. And it was already set to INFO in the log4j.xml. But still my log file is a combination of INFO and DEBUG. As it failed i started picking up the lines with logging level 'INFO' from my server.log files. Then i could see the following lines which i copied here. THANK YOU I am still confused with my belief of clustering so i repeat ======================repetition============= i do have a belief that, if clustering is enabled; and if one of the server(s1) goes down, then the other(s2) will serve the requests coming to s1. Am i correct? Or is that true only in the case of "Failover clustering". If it is correct, what are all the things i have to do to achieve it? ============================================ What you think my next step to be? Is it Failover clustering? If so, boss, please give me some clues. I ll work on that. Kindly help me. Becoz, i could nt see theses informations in any book or web tutorial. Or atlest suggest me some good material if you know. All the materials i saw were explaining about the theoretical aspects only. please help........... with regards sreevals | server.log #1 | | ------------------------------------------------------- | GMS: address is rsssr01-xp:1225 (additional data: 18 bytes) | ------------------------------------------------------- | 13:09:42,544 INFO [org.jboss.ha.framework.interfaces.HAPartition.DefaultPartition] Number of cluster members: 1 | 13:09:42,544 INFO [org.jboss.ha.framework.interfaces.HAPartition.DefaultPartition] Other members: 0 | 13:09:42,544 INFO [org.jboss.ha.framework.interfaces.HAPartition.DefaultPartition] Fetching state (will wait for 30000 milliseconds): | 13:09:42,544 INFO [org.jboss.ha.framework.interfaces.HAPartition.lifecycle.DefaultPartition] New cluster view for partition DefaultPartition (id: 0, delta: 0) : [155.35.20.209:1099] | | 13:09:42,564 INFO [org.jboss.ha.framework.server.DistributedReplicantManagerImpl.DefaultPartition] I am (155.35.20.209:1099) received membershipChanged event: | 13:09:42,564 INFO [org.jboss.ha.framework.server.DistributedReplicantManagerImpl.DefaultPartition] Dead members: 0 ([]) | 13:09:42,564 INFO [org.jboss.ha.framework.server.DistributedReplicantManagerImpl.DefaultPartition] New Members : 0 ([]) | 13:09:42,564 INFO [org.jboss.ha.framework.server.DistributedReplicantManagerImpl.DefaultPartition] All Members : 1 ([155.35.20.209:1099]) | | server.log #2 | | 13:20:09,484 INFO [org.jboss.ha.framework.interfaces.HAPartition.DefaultPartition] Number of cluster members: 2 | 13:20:09,484 INFO [org.jboss.ha.framework.interfaces.HAPartition.DefaultPartition] New cluster view for partition DefaultPartition: 1 ([155.35.20.209:1099, 155.35.20.124:1099] delta: 0) | 13:20:09,500 INFO [org.jboss.ha.framework.interfaces.HAPartition.DefaultPartition] Other members: 1 | 13:20:09,515 DEBUG [org.jboss.ha.framework.interfaces.HAPartition.DefaultPartition] membership changed from 2 to 2 | 13:20:09,515 INFO [org.jboss.ha.framework.interfaces.HAPartition.DefaultPartition] Fetching state (will wait for 30000 milliseconds): | | 13:20:09,875 INFO [org.jboss.ha.framework.server.DistributedReplicantManagerImpl.DefaultPartition] I am (155.35.20.124:1099) received membershipChanged event: | 13:20:09,875 INFO [org.jboss.ha.framework.server.DistributedReplicantManagerImpl.DefaultPartition] Dead members: 0 ([]) | 13:20:09,875 INFO [org.jboss.ha.framework.server.DistributedReplicantManagerImpl.DefaultPartition] New Members : 0 ([]) | 13:20:09,875 INFO [org.jboss.ha.framework.server.DistributedReplicantManagerImpl.DefaultPartition] All Members : 2 ([155.35.20.209:1099, 155.35.20.124:1099]) | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4014416#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...