At the rar level it can be done by adding the config-property-value | <config-property> | <description>The configurable URLSelectorStrategy class name.</description> | <config-property-name>UrlSelectorStrategyClassName</config-property-name> | <config-property-type>java.lang.String</config-property-type> | <config-property-value>your URL selector strategy ......</config-property-value> | </config-property> http://anonsvn.jboss.org/repos/jbossas/trunk/connector/src/resources/loca... You don't need to play at the RAR level . All you need is to have the following configuration at the ManagedConnectionFactory setting | <url-selector-strategy-class-name>org.demo.SampleUrlSelector</url-selector-strategy-class-name> | This is the entry you need to place in the -ds.xml file . Right now I am not able to find the samples where I had tried it , I will give it a test this weekend and probabily update the wiki . Also make sure that your custom code is made available to the server . You can jar it and drop it in the $JBOSS_HOME/server/default/lib directory . View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4078276#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...