I am thankful to receive your reply. There is no error log, and I can see the deployed package message for both .wlar file and the generated .jar. However, when I examine the content in the generated .jar file, the jboss.xml and jbosscmp-jdbc.xml is not there, but weblogic-ejb-jar.xml and weblogic-cmp-rdbms-jar.xml is still there. Does this mean that the EJB has been deployed with default configuration and ignoring any WebLogic-specific deployment descriptors? I have the extension .wlar for my weblogic EJB already but why does this happen? I try it with .jar.wl too but the result is still the same. I have try on the .wlar bean from the sample application too but the generated .jar 's contents also like above. May I know where is the problem? Thanks a lot!