[jboss-user] [JBoss and NetBeans] - EJB Deploynment with JBoss and use of annotations fails

I followed the instuctions on the EJB3-Tutotial on the site http://www.laliluna.de/download/firs...utorial-en.pdf but I can't deploy the application right, as the error down shows. I use mysql-ds.xml in the deploy-directory in JBOSS and mysql Server 4.1 and in jboss and I placed the mysql Connector mysql-connector-java-5.0.6-bin.jar in the directory $JBOSS_HOME/server/default/deploy/lib as said in this tutorial. I don't understand what the error-reason is. Has anybody an idea?Thanks. My mysql-ds.xml -file looks like this: <?xml version="1.0" encoding="UTF-8"?> <local-tx-datasource> <jndi-name>ejb3ExampleDS</jndi-name> <connection-url>jdbc:mysql://mysql-hostname:3306/examples</connection-url> <driver-class>com.mysql.jdbc.Driver</driver-class> <user-name>x</user-name> y <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter</exception-sorter-class-name> <type-mapping>mySQL</type-mapping> </local-tx-datasource> The JBoss Error Stack: --- MBEANS THAT ARE THE ROOT CAUSE OF THE PROBLEM --- ObjectName: persistence.units:jar=FirstEJB3Tutorial.jar,unitName=FirstEjb3Tutori al State: FAILED Reason: javax.persistence.PersistenceException: org.hibernate.HibernateExcepti on: Hibernate Dialect must be explicitly set I Depend On: jboss.jca:service=DataSourceBinding,name=ejb3ExampleDS Depends On Me: jboss.j2ee:jar=FirstEJB3Tutorial.jar,name=BookTestBean,service=EJB3 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4056877#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...