Hi,
I am using JBoss Application Server.
I have a very simple JPA application.
I define a datasource to use JTA in my persistence.xml

<persistence-unit name="h-source" transaction-type="JTA">
 <jta-data-source>java:DefaultDS</jta-data-source>
 <properties>
 <property name="hibernate.connection.driver_class" value="org.hsqldb.jdbcDriver"/>
 <property name="hibernate.connection.username" value="sa"/>
 <property name="hibernate.connection.password" value=""/>
 <property name="hibernate.connection.url" value="jdbc:hsqldb:."/>
 <property name="hibernate.hbm2ddl.auto" value="create-drop"/>
 <property name="hibernate.cache.provider_class" value="org.hibernate.cache.HashtableCacheProvider"/>
 </properties>
</persistence-unit>

I write a simple JSP to instantiate a EntityManagerFactory within a UserTransaction

<<%
 InitialContext ctx = new InitialContext();
 UserTransaction ut = (UserTransaction)ctx.lookup("UserTransaction");
 ut.begin();

 EntityManagerFactory emf =
 Persistence.createEntityManagerFactory("h-source");
.
.
.

I get the following exception

javax.persistence.PersistenceException: org.hibernate.HibernateException: The chosen transaction strategy requires access to the JTA TransactionManager
 org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:720)
 org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:121)
 javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:51)

I can use JTA in a simple JSP with JDBC.
My question is can I use an EntityManagerFactory (instantiated by me, not injected) which will use JTA in a simple JSP?


Or can I only use this type of EntityManagerFactory inside a Session bean?
This link says that is the case.
http://www.abcseo.com/tech/java/jboss-ebj-troubleshooting