I had a similiar problem but it was not related to the order of ID field in the database.
After some searching I found this pointing to the fact that Lobs in Hibernate are treated as OIDs unless otherwise specified.
That means Hibernate will try put a Lob into a Long a hence produce that exception PSQLException: Bad value for type long
The way to specify that the Lob is a to be treated as text is by annotating the field
@Lob
@Type(type = "org.hibernate.type.TextType")