As Spring 2.0.4 has fixed the bug SPR-2598 to deal with Single PersistenceUnit in Multiple persistence.xml files. http://opensource.atlassian.com/proj...rowse/SPR-2598 The suggested code Code: public class CustomPersistenceUnitManager extends DefaultPersistenceUnitManager { protected void postProcessPersistenceUnitInfo(MutablePersistenceUnitInfo ...