Ok i'm dumb and found what i did wrong.
All was in my client classpath : i used the wrong j2ee jar lib as soon as i referenced javaee.jar from glassfish lib dir all run weel (ok i need to refer to appserv-admin.jar, appserv-rt.jar imqjmsra.jar also ;o) ).
Sorry for the inconvenience.
Nicolas
[Message sent by forum member 'nbeucler' (nbeucler)]
http://forums.java.net/jive/thread.jspa?messageID=334151