org.hibernate.cfg.JDBCBinderException: Duplicate class name 'AllFileGroups' generated for 'org.hibernate.mapping.Table(SYS._ALL_FILE_GROUPS)'. Same name where generated for 'org.hibernate.mapping.Table(SYS._ALL_FILE_GROUPS)'
Duplicate class name 'AllFileGroups' generated for 'org.hibernate.mapping.Table(SYS._ALL_FILE_GROUPS)'. Same name where generated for 'org.hibernate.mapping.Table(SYS._ALL_FILE_GROUPS)'
  <No message>

<project default="" basedir=".">
   
   <property name="domainobjects.dir" value="out"></property>
   <property name="lib" value="lib"></property>

   <path id="toolslib">
       <path location="${lib}/hibernate-tools.jar" />
      <path location="${lib}/hibernate3.jar" />
      <path location="${lib}/freemarker.jar" />
      <path location="${lib}/ojdbc14.jar" />
      <path location="${lib}/commons-logging-1.0.4.jar" />
      <path location="${lib}/dom4j-1.6.1.jar" />
      <path location="${lib}/slf4j-api-1.5.8.jar" />
      <path location="${lib}/slf4j-simple-1.5.8.jar" />
      <path location="${lib}/commons-collections-2.1.1.jar" />
      <path location="${lib}/hibernate-annotations.jar" />
      <path location="${lib}/hibernate-commons-annotations.jar" />
      <path location="${lib}/ejb3-persistence.jar" />
   </path>

   <taskdef name="hibernatetool"
            classname="org.hibernate.tool.ant.HibernateToolTask"
            classpathref="toolslib" />   
   
   <hibernatetool destdir="${domainobjects.dir}/generated">
        <annotationconfiguration configurationfile="hibernate.cfg.xml" />
        <hbm2hbmxml/>
   </hibernatetool>

</project>

<?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>

        <!-- Database connection settings -->
        <property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
        <property name="connection.url">jdbc:oracle:thin:@localhost:1521:XE</property>
        <property name="connection.username">user</property>
        <property name="connection.password">pass</property>
        <property name="default_schema">myschema</property>

        <!-- JDBC connection pool (use the built-in) -->
        <property name="connection.pool_size">1</property>

        <!-- SQL dialect -->
        <property name="dialect">org.hibernate.dialect.Oracle9Dialect</property>

        <!-- Enable Hibernate's automatic session context management -->
        <property name="current_session_context_class">thread</property>

        <!-- Disable the second-level cache  -->
        <property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>

        <!-- Echo all executed SQL to stdout -->
        <property name="show_sql">true</property>

    </session-factory>

</hibernate-configuration>

<hibernatetool destdir="${domainobjects.dir}">
      <jdbcconfiguration configurationfile="hibernate.cfg.xml"/>
      <hbm2java jdk5="true" ejb3="true"/>
</hibernatetool>