Issue with Container managed transaction (openJPA + Spring + WAS 8.5)

Question

I am facing an issue with the injection of EntityManager to DAO without using @PersistenceContext.

I am working on an application that has two EntityManagerFactories one which use a jndi datasource and another which uses a jdbc datasource. I have to inject the EntityManager to DAO without using @PersistenceContext, since I want to use the same DAO for both datasources. Both the persistence units are in the same persistence.xml

The approach that I followed is:

persistenceContext-jdbc.xml

<tx:annotation-driven transaction-manager="demoTransactionManager" />
<bean id="demoEntityManagerFactory"
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="beanName" value="demoEntityManager" />
    <property name="dataSource" ref="dataSource" />
    <property name="persistenceUnitName" value="jdbcPersistence" />
    <property name="persistenceXmlLocation" value="classpath:META-INF/persistence.xml" />
    <property name="jpaVendorAdapter">
        <bean class="org.springframework.orm.jpa.vendor.OpenJpaVendorAdapter">
            <property name="showSql" value="true" />
            <property name="generateDdl" value="false" />
            <property name="databasePlatform" value="org.apache.openjpa.jdbc.sql.DB2Dictionary" />
        </bean>
    </property>
    <property name="loadTimeWeaver">
        <bean
            class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" />
    </property>
</bean>

<bean id="demoDAO" class="com.test.dao.DemoDAO"
    <property name="demoEntityManager">
    <bean class="org.springframework.orm.jpa.support.SharedEntityManagerBean">
        <property name="entityManagerFactory" ref="demoEntityManagerFactory"/>  
    </bean>
    </property>
</bean>
<bean id="dataSource" class="org.springframework.jdbc.datasource.TransactionAwareDataSourceProxy">
    ....database properties....
</bean>

<bean id="demoTransactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
    <property name="entityManagerFactory" ref="demoEntityManagerFactory" />
</bean>

persistenceContext-jndi.xml

<bean id="demoEntityManagerFactory"
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="beanName" value="demoEntityManager" />
    <property name="persistenceUnitName" value="jndiPersistence" />
    <property name="persistenceXmlLocation" value="classpath:META-INF/persistence.xml" />
    <property name="jpaVendorAdapter">
        <bean class="org.springframework.orm.jpa.vendor.OpenJpaVendorAdapter">
            <property name="showSql" value="true" />
            <property name="generateDdl" value="false" />
            <property name="databasePlatform" value="org.apache.openjpa.jdbc.sql.DB2Dictionary" />
        </bean>
    </property>
</bean>

<bean id="demoDAO" class="com.test.dao.DemoDAO">
    <property name="demoEntityManager">
    <bean id="demoEntityManager" class="org.springframework.orm.jpa.support.SharedEntityManagerBean">
        <property name="entityManagerFactory" ref="demoEntityManagerFactory"/>  
    </bean>
    </property>
</bean> 

Though I am able to inject the EntityManager for jdbc flow. I am facing issues with the same for jndi flow.

The application polls messages from MQ using spring integration (@ServiceActivator).

The following is the exception that i am getting:

Setup of JMS message listener invoker failed for destination 'queue://<QueueName>' - trying to recover. Cause: Could not open JPA EntityManager for transaction; nested exception is <openjpa-2.2.2-r422266:1468616 nonfatal user error> org.apache.openjpa.persistence.InvalidStateException: You cannot access the EntityTransaction when using managed transactions.