parent key not found, Save two connected objects

[Kamil Kuchta]

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
	   					   http://www.springframework.org/schema/beans/spring-beans.xsd
                           http://www.springframework.org/schema/tx
                           http://www.springframework.org/schema/tx/spring-tx.xsd">


	<tx:annotation-driven transaction-manager="transactionManager" />

	<bean id="sessionFactory"
		class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />

		<property name="annotatedClasses">
			<list>
				<value>pl.diagno.model.vo.Person</value>
				<value>pl.diagno.model.vo.OrderGeneral</value>
				<value>pl.diagno.model.vo.OrderDetails</value>
				... and others ...
			</list>
		</property>
		<property name="hibernateProperties">
			<props>
				<prop key="show_sql">true</prop>
				<prop key="dialect">org.hibernate.dialect.Oracle10gDialect</prop>
				<prop key="hibernate.transaction.flush_before_completion">true</prop>
				<prop key="hibernate.transaction.auto_close_session">true</prop>
				<prop key="hibernate.use_sql_comments">true</prop> 
                <prop key="hibernate.connection.release_mode">auto</prop>
				
			</props>
		</property>
	</bean>

	<bean id="transactionManager"
		class="org.springframework.orm.hibernate3.HibernateTransactionManager">
		<property name="sessionFactory" ref="sessionFactory" />
	</bean>

	<!-- DAO BEANS  -->
	<bean id="personDao" class="pl.diagno.dao.impl.PersonDAOImpl">
		<property name="sessionFactory" ref="sessionFactory" />
	</bean>

	<bean id="orderDetailsDao" class="pl.diagno.dao.impl.OrderDetailsDAOImpl">
		<property name="sessionFactory" ref="sessionFactory" />
	</bean>

	<bean id="orderGeneralDao" class="pl.diagno.dao.impl.OrderGeneralDAOImpl">
		<property name="sessionFactory" ref="sessionFactory" />
	</bean>

	<bean id="testDao" class="pl.diagno.dao.impl.TestDAOImpl">
		<property name="sessionFactory" ref="sessionFactory" />
	</bean>

	<!-- BO BEANS -->	
	<bean id="orderBo" class="pl.diagno.bo.impl.OrderBOImpl"> <!-- autowire="byName"  -->
		<property name="personDAO" ref="personDao" />
		<property name="testDAO" ref="testDao" />
		<property name="orderGeneralDAO" ref="orderGeneralDao" />
		<property name="orderDetailsDAO" ref="orderDetailsDao" />
	</bean>
</beans>

In OrderDetails is a reference @ManyToOne to OrderGeneral.
The problem is that I can not save OrderGeneral and referenced on it OrderDetails in one method/transaction. This is my method:

@Transactional(readOnly = false, propagation = Propagation.REQUIRED)
	public void saveOrder(long personId, long clinicId, long testsId[]){
		
		OrderGeneral orderGeneral = new OrderGeneral();
		orderGeneral.setPerson(personDAO.load(personId));
		orderGeneralDAO.save(orderGeneral); // save orderGeneral

		for(int i = 0; i<testsId.length; i++){
			OrderDetails orderDetails = new OrderDetails();
			orderDetails.setOrderGeneral(orderGeneral); //set orderGeneral
			orderDetails.setTest(testDAO.load(testsId[i]));
			orderDetailsDAO.save(orderDetails); //save orderDetails
		}
	}

Exception:

java.sql.BatchUpdateException: ORA-02291: integrity constraint (DIAGNO.ORDERDETAILS_ORDERGENERAL_FK) violated - parent key not found

OrderDetailsDAO is

    public void save(final OrderDetails entity) {
        hibernateTemplate.saveOrUpdate(entity);
        hibernateTemplate.flush();
    }

Unfortunatly the problem is not in mapping, I checked it several times, and what is more saving another two connected object (ex Person and City which doesn't exist in base) ends with the same exception (of course another parent key is not found).
I faced up this problem 2 months ago and I'm still fighting with it.
Please for help.