[Solved] org.apache.openjpa.persistence.PersistenceException: null

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I’ll document all my solutions to this problem.

  • This is the 1st resolution. The clue was here. I upgraded Open
    JPA from 2.2.0 to 2.2.2 & the exception went away, so it appears that
    it was a bug.

  • This happened again. I was missing cglib.2.2.3.zip and/or
    cglib-nodep-2.2.3.jar.

solved org.apache.openjpa.persistence.PersistenceException: null