"andydale" wrote : don't forget to add allocationSize = 1 to the @SequenceGenerator annotation, or what is stored migth not match the sequence values. | | Cheers, | | Andy You are right, the default value is 50, but if you look in property of an sequence in DB you will see : CREATE SEQUENCE address_seq | INCREMENT 1 | MINVALUE 1 | MAXVALUE 9223372036854775807 | START 1 | CACHE 1; | ALTER TABLE address_seq OWNER TO postgres; and I suppose it's mistake of JPA realization or DB. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4051454#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...