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    Root Cause Analysis

    1. javax.persistence.PersistenceException

      Exception [TOPLINK-28018] (Oracle TopLink Essentials - 2.0 (Build 58 (08/05/2007))): oracle.toplink.essentials.exceptions.EntityManagerSetupException Exception Description: predeploy for PersistenceUnit [pu1] failed. Internal Exception: Exception [TOPLINK-30007] (Oracle TopLink Essentials - 2.0 (Build 58 (08/05/2007))): oracle.toplink.essentials.exceptions.PersistenceUnitLoadingException Exception Description: An exception was thrown while loading class: entity.Customer to check whether it implements @Entity, @Embeddable, or @MappedSuperclass. Internal Exception: java.lang.ClassNotFoundException: entity.Customer

      at oracle.toplink.essentials.exceptions.PersistenceUnitLoadingException.exceptionSearchingForPersistenceResources()
    2. oracle.toplink.essentials
      EntityManagerFactoryProvider.createEntityManagerFactory
      1. oracle.toplink.essentials.exceptions.PersistenceUnitLoadingException.exceptionSearchingForPersistenceResources(PersistenceUnitLoadingException.java:143)
      2. oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider.createEntityManagerFactory(EntityManagerFactoryProvider.java:169)
      2 frames