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I resolved my problem by using all Spring beans.

    <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">

        <property name="persistenceUnitName" value="com.navis.control.persistence.jpa" />

    </bean>

    <bean id="txManager" class="org.springframework.orm.jpa.JpaTransactionManager">

        <property name="entityManagerFactory" ref="entityManagerFactory" />

    </bean>

ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("ApplicationContext.xml");

        Environmentenv = KnowledgeBaseFactory.newEnvironment();

        env.set(EnvironmentName.ENTITY_MANAGER_FACTORY,applicationContext.getBean("entityManagerFactory"));

        env.set(EnvironmentName.TRANSACTION_MANAGER, applicationContext.getBean("txManager"));

KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();

kbuilder.add(ResourceFactory.newClassPathResource("aFile"), ResourceType.BPMN2);

kbuilder.add(ResourceFactory.newClassPathResource("aRule"), ResourceType.DRL);

KnowledgeBase kbase = kbuilder.newKnowledgeBase();

StatefulKnowledgeSession ksession = JPAKnowledgeService.newStatefulKnowledgeSession(kbase, null, env);