It got deployed. Thanks Tom. If anyone interested, this is what done to resolve the issue. the hibernate should be configured to identify the ehcache class and the ehcache.xml file. this can be done either in the .properties file or in the .cfg.xml file and this file should be in the classpath. hibernate.properties file contains hibernate.cache.provider_class=net.sf.ehcache.hibernate.EhCacheProvider net.sf.ehcache.configurationResourceName=/ehcache.xml View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3992161#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...