As suggested by you I went with approach 2 and added my class in default-ds file But the switchover happened without giving control to my class. Am I missing anything? Even with a junk value like the one below the switchover happened without issues..... <url-selector-strategy-class-name>abcd</url-selector-strategy-class-name> To remind again, I am using 4.0.5 GA version of Jboss. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4078361#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...