Disable @Transactional mandatory check in Hibernate 5.x - madhusudana30/AlternativeJPAForWebSphere GitHub Wiki
https://stackoverflow.com/questions/33983039/hibernate-5-transaction-not-started-by-spring-4
<property name="jpaPropertyMap">
<map>
<entry key="hibernate.current_session_context_class" value="thread"/>
</map>
</property>