Erro : No JTA transaction found

EntityManagerFactory factory= Persistence.createEntityManagerFactory("lims-pu");
    	   EntityManager manager= factory.createEntityManager();	   
		      
    	   Session session = (Session)  manager.getDelegate();  
    	   Criteria criteria = session.createCriteria(PrecoPorMetodo.class);
    	   
	        criteria.setProjection(Projections.rowCount());     	        
	        List result = criteria.list();
 	        System.out.println("No. of rows: "+result);

      	 return criteria.list();  	

///persistence

<persistence 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_1_0.xsd"
	version="1.0">
	<persistence-unit name="lims-pu" transaction-type="JTA">
		<jta-data-source>java:/LimsDS</jta-data-source>
		<jar-file>../auditor-ejb-${pom.version}.jar</jar-file>
		<jar-file>../usuario-ejb-${pom.version}.jar</jar-file>
		<jar-file>../funcionario-ejb-${pom.version}.jar</jar-file>
		<jar-file>../cliente-ejb-${pom.version}.jar</jar-file>
		<jar-file>../orcamento-ejb-${pom.version}.jar</jar-file>
		<jar-file>../comum-ejb-${pom.version}.jar</jar-file>
		<jar-file>../analise-ejb-${pom.version}.jar</jar-file>
		<jar-file>../coleta-ejb-${pom.version}.jar</jar-file>
		<jar-file>../faturamento-ejb-${pom.version}.jar</jar-file>
		<jar-file>../laudo-ejb-${pom.version}.jar</jar-file>



		<properties>
				<property name="hibernate.transaction.manager_lookup_class"  
 value="org.hibernate.transaction.JBossTransactionManagerLookup"/>
		
		
			<property name="hibernate.dialect" value="${hibernate.dialect}" />
			<!-- property name="hibernate.hbm2ddl.auto" value="${hibernate.hbm2ddl}" /-->
			<property name="hibernate.show_sql" value="${hibernate.show_sql}" />

			<property name="hibernate.cache.provider_class" value="${hibernate.cache.provider_class}"/>
			<property name="hibernate.cache.use_second_level_cache" value="${hibernate.cache.use_second_level_cache}"/>
			<property name="hibernate.cache.use_query_cache" value="${hibernate.cache.use_query_cache}"/>
			<property name="hibernate.jdbc.batch_size" value="0" />

		</properties>
	</persistence-unit>
</persistence>