Since the upgrade to Hibernate 4.1.9 (previously 4.1.7) we're getting constraint violations against the primary keys. Reverting to 4.1.7 solves the problem. I've been trying many things to isolate the problem.

This is happening with both mysql and derby. I'm including the stack traces into this ticket.

Our entity model is very extensive, so I'm unable to provide test code at this moment. But if somebody can talk me through what other things I can check. I've run out of options. :-/

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What might help is the common superclass of all our entities. Maybe it's something with the id table ?

@Indexed
@Table(name = "ENTITIES")
@Entity
@org.hibernate.envers.Audited
@Inheritance(strategy = InheritanceType.JOINED)
public abstract class LongIdEntity implements Serializable { @Id @GeneratedValue(strategy = GenerationType.TABLE) private Long id; .... }