<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"

"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>

    <session-factory>
        <property name="hibernate.current_session_context_class">thread</property>
        <property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
        <property name="hibernate.connection.url">jdbc:oracle:thin:@oracle.stud.aitel.hist.no:1521:oracle</property>
        <property name="hibernate.connection.username">vinbutikken</property>
        <property name="hibernate.connection.password">prosjektv06</property>
        <property name="dialect">org.hibernate.dialect.Oracle9Dialect</property>
        <property name="show_sql">true</property>
        <property name="hibernate.transaction.factory_class">
             org.hibernate.transaction.JDBCTransactionFactory
        </property>
        <property name="hibernate.cache.provider_class">
             org.hibernate.cache.HashtableCacheProvider
        </property>
        <property name="hibernate.hbm2ddl.auto">update</property>
       
        <property name="showsql">true</property>
        <property name="hbm2ddl.auto">create</property>
        <mapping resource="vinbutikk/hbm/Vin.hbm.xml"/>
        <mapping resource="vinbutikk/hbm/Bestilling.hbm.xml"/>
        <mapping resource="vinbutikk/hbm/BestillingStatus.hbm.xml"/>
        <mapping resource="vinbutikk/hbm/BestiltVare.hbm.xml"/>
        <mapping resource="vinbutikk/hbm/Bruker.hbm.xml"/>
        <mapping resource="vinbutikk/hbm/BrukerKarakter.hbm.xml"/>
        <mapping resource="vinbutikk/hbm/Land.hbm.xml"/>
        <mapping resource="vinbutikk/hbm/Leverandor.hbm.xml"/>
        <mapping resource="vinbutikk/hbm/Postnummer.hbm.xml"/>
        <mapping resource="vinbutikk/hbm/Region.hbm.xml"/>
        <mapping resource="vinbutikk/hbm/UkensVin.hbm.xml"/>
        <mapping resource="vinbutikk/hbm/Vintype.hbm.xml"/>
    </session-factory>

</hibernate-configuration>

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>

    <class name="vinbutikk.PostnummerBean" table="HIB_POSTNR">
        <id name="id" column="id" type="long">
                <generator class="increment"/>
        </id>
        <property name="postnummer" type="string"/>
        <property name="poststed" type="string"/>
    </class>

</hibernate-mapping>

package vinbutikk;
/*
* Main.java
*
* Created on February 20, 2006, 11:18 AM
*
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
*/

import vinbutikk.util.HibernateUtil;
import javax.transaction.*;
import org.hibernate.*;
import org.hibernate.cfg.*;
/**
*
* @author christian
*/
public class Main {
   
    /** Creates a new instance of Main */
    public Main() {
    }
   
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
       
        //SessionFactory sf = new Configuration().configure().buildSessionFactory();
        Session s = HibernateUtil.getSession();
        //Session s = sf.getCurrentSession();
        //System.err.print(s.toString());
        s.beginTransaction();
        PostnummerBean pn = new PostnummerBean("7075","Tiller");
        //Transaction tx = s.beginTransaction();
        s.save(pn);
        s.getTransaction().commit();
        HibernateUtil.getSessionFactory().close();
       
       
       
       
    }
   
}

package vinbutikk.util;

import org.hibernate.*;
import org.hibernate.cfg.*;

public class HibernateUtil {

    private static final SessionFactory sessionFactory;

    static {
        try {
            // Create the SessionFactory from hibernate.cfg.xml
            sessionFactory = new Configuration().configure().buildSessionFactory();
        } catch (Throwable ex) {
            // Make sure you log the exception, as it might be swallowed
            System.err.println("Initial SessionFactory creation failed." + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }

    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }
   
    public static Session getSession() {
        return sessionFactory.openSession();
    }

}

Exception in thread "main" org.hibernate.MappingException: Unknown entity: vinbutikk.PostnummerBean
        at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:513)
        at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1321)
        at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:89)
        at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:186)
        at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
        at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:175)
        at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
        at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
        at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:559)
        at org.hibernate.impl.SessionImpl.save(SessionImpl.java:547)
        at org.hibernate.impl.SessionImpl.save(SessionImpl.java:543)
        at vinbutikk.Main.main(Main.java:38)
Java Result: 1
BUILD SUCCESSFUL (total time: 2 seconds)