Ok,hehe. Thanks for ataylor's help.I checked my sybase.xml and change to:<type-mapping>Sybase</type-mapping> View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4119966#4119966 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4119966