Hi,

I am facing same issue while upgrading to hibernate version 5.0. It worked fine in version 4.3. I changed my setting hibernate.id.new_generator_mappings to false in configuration/hibernate.cfg.xml file but still I am getting the same error. Hibernate is still using SequenceStyleGenerator and looking for hibernate_sequence which does not exists. However in old version (3.6 and 4.3) SequenceStyle generator was used and I did not get any error.

Thanks for your help