Java Database Connectivity (JDBC)

I'm running a test case which tests my application's hibernate stuff which is deployed on a Weblogic 8.1 server.

here is the setup method

    private Core2HbmVisitor visitor;
    private Session session;
    private Transaction t;

    
protected void setUp() throws Exception {
        Configuration config = new Configuration();
    	config.configure();
    	SessionFactory sessionFactory = config.buildSessionFactory();

    	session = sessionFactory.openSession();
    	t = session.beginTransaction();
        visitor = new Core2HbmVisitor(session);
    }

While doing a session.beginTransaction i get the following error.

org.hibernate.TransactionException: could not register synchronization with JTA TransactionManager
at org.hibernate.jdbc.JDBCContext.registerSynchronizationIfPossible(JDBCContext.java:187)
at org.hibernate.transaction.JTATransaction.begin(JTATransaction.java:89)
at org.hibernate.transaction.JTATransactionFactory.beginTransaction(JTATransactionFactory.java:53)
at org.hibernate.jdbc.JDBCContext.beginTransaction(JDBCContext.java:271)
at org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1079)
at castle.server.hbm.biz.visitor.TestCore2Hbm.setUp(TestCore2Hbm.java:25)
at junit.framework.TestCase.runBare(TestCase.java:125)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:421)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:305)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:186)
Caused by: javax.transaction.SystemException: You may enlist a resource only on a server
at weblogic.transaction.internal.TransactionImpl.registerSynchronization(TransactionImpl.java:494)
at org.hibernate.jdbc.JDBCContext.registerSynchronizationIfPossible(JDBCContext.java:176)
... 15 more

The hibernate.cfg.xml file is as under
--------------------------------------------------

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration
    PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
    "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
	<session-factory>

		<!-- local connection properties -->

		<property name="hibernate.jndi.url">
			t3://localhost:7001
		</property>

		
		<property name="hibernate.jndi.class">
			weblogic.jndi.WLInitialContextFactory
		</property>

		<property name="hibernate.connection.datasource">
			castle/datasources/castle
		</property>

		<property name="hibernate.transaction.factory_class">
			org.hibernate.transaction.JTATransactionFactory
		</property>

		<property name="hibernate.transaction.manager_lookup_class">
			org.hibernate.transaction.WeblogicTransactionManagerLookup
		</property>

		<!-- This is required for weblogic! -->
		<property name="hibernate.query.factory_class">
			org.hibernate.hql.classic.ClassicQueryTranslatorFactory
		</property>

		<!--  These are tunning properties set by Romulus after some tests. 
		Please don't change these values whithout talking with Romulus!!!! -->
		<property name="hibernate.max_fetch_depth">5</property>
		<property name="hibernate.default_batch_fetch_size">250</property>
		<property name="hibernate.cglib.use_reflection_optimizer">true</property>


		<!-- cache settings -->
		<property name="hibernate.cache.provider_class">
			org.hibernate.cache.EhCacheProvider
		</property>
		<property name="hibernate.cache.use_query_cache">true</property>



		<!-- dialect for Sybase -->
		<property name="dialect">
			org.hibernate.dialect.SybaseDialect
		</property>

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



		<mapping resource="castle/DescriptionType.hbm.xml" />
		<mapping resource="castle/Description.hbm.xml" />
		<mapping resource="castle/DescriptionGroupType.hbm.xml" />
		<mapping resource="castle/DescriptionGroup.hbm.xml" />

		<mapping resource="castle/Source.hbm.xml" />
		<mapping resource="castle/DataSet.hbm.xml" />
		<mapping resource="castle/EditDetails.hbm.xml" />
		<mapping resource="castle/CastleType.hbm.xml" />

		<mapping resource="castle/cds/CdsAction.hbm.xml" />
		<mapping resource="castle/cds/CdsMarketDataLabel.hbm.xml" />
		<mapping resource="castle/cds/CreditDefaultSwapAsset.hbm.xml" />
		<mapping resource="castle/cds/Issuer.hbm.xml" />
		<mapping resource="castle/cds/MarketDataLabel.hbm.xml" />
		<mapping resource="castle/cds/ReferenceObligation.hbm.xml" />
		<mapping resource="castle/cds/TransactionTermSet.hbm.xml" />

		<mapping resource="castle/portfolio/AssetPortfolio.hbm.xml" />
		<mapping
			resource="castle/portfolio/AssetPortfolioAction.hbm.xml" />
		<mapping
			resource="castle/portfolio/AssetPortfolioMarketDataLabel.hbm.xml" />

		<mapping resource="castle/cdi/CdiAction.hbm.xml" />
		<mapping resource="castle/cdi/CdiContractAction.hbm.xml" />
		<mapping
			resource="castle/cdi/CdiContractMarketDataLabel.hbm.xml" />
		<mapping resource="castle/cdi/CdiContract.hbm.xml" />
		<mapping resource="castle/cdi/CdiContractTrigger.hbm.xml" />
		<mapping resource="castle/cdi/CdiContractTriggerType.hbm.xml" />
		<mapping resource="castle/cdi/CdIndex.hbm.xml" />
		<mapping resource="castle/cdi/CdiTrancheAction.hbm.xml" />
		<mapping resource="castle/cdi/CdiTranche.hbm.xml" />

		<mapping resource="castle/cdo/CdoAction.hbm.xml" />
		<mapping resource="castle/cdo/CdoMarketDataLabel.hbm.xml" />
		<mapping resource="castle/cdo/Cdo.hbm.xml" />
		<mapping resource="castle/cdo/CdoTrancheAction.hbm.xml" />
		<mapping resource="castle/cdo/CdoTranche.hbm.xml" />



	</session-factory>

</hibernate-configuration>

Pl let me know if anyone has faced an issue like this.