If it's null then org.jboss.weld.environment.servlet.Listener probably did not recieve the ServletContextListener.contextInitialized() notification. It would be useful to enable the debug logging for Weld and post the full bootstrap log. I don't know how to setup logging in NetWeaver though. You can check the Weld FAQ which contains some tips for GlassFish, WildFly and Tomcat: http://weld.cdi-spec.org/documentation/#7.