<persistence-unit name="Process" transaction-type="JTA">

                    <jta-data-source>java:jboss/datasources/orcl</jta-data-source>

                    <class>...</class>

                    <!--不包括没有列出来的类-->

                    <exclude-unlisted-classes>true</exclude-unlisted-classes>

                    <properties>

                              <property name="hibernate.show_sql" value="true" />

                              <property name="hibernate.hbm2ddl.auto" value="none" />

                              <property name=" hibernate.jdbc.batch_size" value="100" />

                    </properties>

          </persistence-unit>

</persistence>

the StatelessBean

@TransactionManagement(TransactionManagementType.CONTAINER)

public class BatchService implements BatchServiceRemote,BatchServiceLocal {

     @TransactionAttribute(TransactionAttributeType.NEVER)

    method A(){

     B();

    }

      @TransactionAttribute(TransactionAttributeType.MANDATORY)

     method B(){

    }

...

}

I call A(); but method B didnot throw a exception