Now i only want to know if i compile a jca adapter ,what classes are nessesary. connection ? Now i don't process the transaction and security. and only connection. and i just call the method test() of the remote EJB. that is i will create an adapter for EJB. and the record input and output are not used. I compile the connection adapter,but when i deploy it .there is wrong message. I attach the adapter ,and i hope someone can help me look it ,and tell me what's wrong it? the jca-test.jar is the bean that call the jca. And the jca-res.rar is the adaper file. the ejbadapter-service.xml is the configure file of the adapter.