EJB3 Entities in JBoss use Hibernate under the hood. So in persistence.xml, I pass in the property: <property name="hibernate.show_sql" value="true" /> I'm pretty sure this instructs Hibernate to write to System.out. If anyone knows how to get this sent to Commong Logging or Log4J appenders, I'd love to know. I also like to see the output from the Schema Export, so set the following in my $JBOSS_HOME/server//[servername]/conf/log4j.xml: <!-- Show SQL Logs for Hibernate Schema Export --> | <category name="org.hibernate.tool.hbm2ddl.SchemaExport"> | <priority value="DEBUG" /> | </category> S, ALR View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3968192#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...