if you want to use it in a certain ear, then place the jar in there (together with its dependencies). If you want it to be visible to all applications in glassfish, then this is a glassfish specific configuration. Either way, from this point of view JBossCache should not be handled differently than any other jar you want to deploy on GlassFish View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4171693#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...