Adam: I am trying to teach myself EJB3 using Bill Burke's book and JBoss 4.0.4GA, and I'm getting the same kinds of errors you indicated in your post on Jboss.org, at: http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3977853 Did you ever get any kind of reply from JBoss (or anyone else) about the errors you got when deploying your EJB3 application: 3:22:57,651 WARN [JDBCExceptionReporter] SQL Warning: 1051, SQLState: 42S02 13:22:57,651 WARN [JDBCExceptionReporter] Unknown table 'simpleentity' 13:22:57,666 WARN [JDBCExceptionReporter] SQL Warning: 1051, SQLState: 42S02 13:22:57,666 WARN [JDBCExceptionReporter] Unknown table 'simpleentity' 13:22:57,713 WARN [JDBCExceptionReporter] SQL Warning: 1051, SQLState: 42S02 13:22:57,713 WARN [JDBCExceptionReporter] Unknown table 'simpleentity_longarray' Thanks...... Tom C. Michigan State University East Lansing, Michigan USA cliffo60(a)ais.msu.edu http://www.msu.edu/user/cliffo60/ http://www.clifforditservices.com/ View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4095326#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...