Hmm, further information comes out.  It seems to work with mine when I have
the field directly in my entity.  In my standard case, I have a basic entity
that my standard entities extend.  I have reduced by base entity to the
following:

@MappedSuperclass
public abstract class BasicEntity {
        @Column(name="update_user")
        private String updateUser;
        @Column(name="update_user_namespace")
        private String updateUserNamespace;
        @Version
        @Temporal(TemporalType.TIMESTAMP)
        @Column(name="update_datetime")
        private Timestamp updateDateTime;
        @Column(name="insert_user")
        private String insertUser;
        @Column(name="insert_user_namespace")
        private String insertUserNamespace;
        @Temporal(TemporalType.TIMESTAMP)
        @Column(name="insert_datetime")
        private Timestamp insertDateTime;
...
}

If I extend this basic entity, I get the issue.  If I don't use the base
class and have the updateDateTime directly in my class, the exception goes
away.


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