Hello All, I am upgrading one of our applications from jboss 4.0.5 GA to Jboss 7.1.1, and I am encountering the exception below:

org.hibernate.internal.SessionFactoryImpl cannot be cast to org.hibernate.SessionFactory

java.lang.ClassCastException: org.hibernate.internal.SessionFactoryImpl cannot be cast to org.hibernate.SessionFactory

My persistence.xml is:

<?xml version="1.0" encoding="UTF-8"?>

<persistence version="2.0" 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_2_0.xsd">

    <persistence-unit name="XXModelPU">

        <description>XXModelPU</description>

        <jta-data-source>java:/GTDB</jta-data-source>

        <properties>

            <property name="hibernate.session_factory_name" value="java:/hibernate/GTDSessionFactory"/>

            <property name="hibernate.hbm2ddl.auto" value="update" />

            <property name="hibernate.show_sql" value="false" />

            <property name="hibernate.dialect" value="org.hibernate.dialect.SQLServerDialect"/>

            <property name="hibernate.cache.use_second_level_cache" value="false"/>

        </properties>

    </persistence-unit>

</persistence>

Hibernate3 was used for the development of the application.

Kindly help figure out what the issue is...