Thanks Vickyk for your answer, But my question was not for the reconnection to the ldap backend. We know where the problem might be. What we don't understand is the problem we have seen where when we fix connections from one node of the cluster to the backend (redeploying the datasource), connections to the backend gets also fixed in the other node of the cluster. Can you throw some light on this? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4160752#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...