hibernate.id.new_generator_mappings

“true or false. Setting which indicates whether or not the new IdentifierGenerator implementations are used for AUTO, TABLE and SEQUENCE. Default to false to keep backward compatibility.

Note
We recommend all new projects to use hibernate.id.new_generator_mappings=true as the new generators are more efficient and closer to the JPA 2 specification semantic. However they are not backward compatible with existing databases (if a sequence or a table is used for id generation).”

[Quelle: https://docs.jboss.org/hibernate/stable/annotations/reference/en/html/ch01.html]