[jboss-user] [JBoss and NetBeans] - Netbeans 5.5RC2 + JBoss 4.0.4 + Hibernate ...big problem :(

Hello everyone! I am a new in EJB3. I started learning with this link: http://www.netbeans.org/kb/55/ejb30-jboss.html I changed ma database on MySQL 4.1 and everything went ok to the moment when I added a new Session Bean for Entity Classes: public List find_new() { | return em.createQuery("select object(o) from Access as o where o.loginID=:a") | .setParameter("a","1234567") | .getResultList(); | | } I also added a line in the servlet: list=af.find_new(); Then the JBoss server displayed this information: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException org.jboss.ejb3.EJBContainer.construct(EJBContainer.java:471) org.jboss.ejb3.AbstractPool.create(AbstractPool.java:62) org.jboss.ejb3.ThreadlocalPool.get(ThreadlocalPool.java:48) org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:54) org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:78) org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47) org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106) org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) org.jboss.ejb3.stateless.StatelessContainer.localInvoke(StatelessContainer.java:181) org.jboss.ejb3.stateless.StatelessLocalProxy.invoke(StatelessLocalProxy.java:79) $Proxy191.findAll(Unknown Source) web.test.processRequest(test.java:38) web.test.doGet(test.java:59) javax.servlet.http.HttpServlet.service(HttpServlet.java:697) javax.servlet.http.HttpServlet.service(HttpServlet.java:810) org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) I don't know what this info is about? My persistence.xml: <?xml version="1.0" encoding="UTF-8"?> | <persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"> | <persistence-unit name="gogo2-ejbPU" transaction-type="JTA"> | <provider>org.hibernate.ejb.HibernatePersistence</provider> | <jta-data-source>java:/bankingDS</jta-data-source> | <class>ejb.Access</class> | <class>ejb.Customer</class> | <class>ejb.IdType</class> | <properties> | <property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306//banking"/> | <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/> | <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/> | <property name="hibernate.hbm2ddl.auto" value="update"/> | </properties> | </persistence-unit> | </persistence> What's wrong, what did I miss, did I forget to add some libraries, please help. Thanks in advance. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3979514#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...