Hi when I set the property hibernate.hbm2ddl.auto to create in one datasource and not in the other - it works. My problem is that I have tables that should bei created each time and some are not! here it seems I need one datasource special for the tables that I want to create each time - or is there another possilbility? regards Pascal <persistence-unit name="pms-msgbrowser"> | <provider>org.hibernate.ejb.HibernatePersistence</provider> | <jta-data-source>java:/pms-msgbrowserDatasource</jta-data-source> | <properties> | <property name="hibernate.hbm2ddl.auto" value="create"/> | <property name="hibernate.cache.use_query_cache" value="true"/> | <property name="hibernate.show_sql" value="true"/> | <property name="jboss.entity.manager.factory.jndi.name" value="java:/pms-msgbrowserEntityManagerFactory"/> | </properties> | </persistence-unit> | | <persistence-unit name="pms-msgbrowser-LUZ"> | <provider>org.hibernate.ejb.HibernatePersistence</provider> | <jta-data-source>java:/pms-msgbrowser-LUZDatasource</jta-data-source> | <properties> | <property name="hibernate.hbm2ddl.auto" value="validate"/> | <property name="hibernate.cache.use_query_cache" value="true"/> | <property name="hibernate.show_sql" value="true"/> | <property name="jboss.entity.manager.factory.jndi.name" value="java:/pms-msgbrowser-LUZEntityManagerFactory"/> | | </properties> | </persistence-unit> View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4071027#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...