Mapping says allocationSize=50, the database sequence says INCREMENT BY 1 (schema created by hand) ######## H2 ######## == hibernate.id.sequence.increment_size_mismatch_strategy = (unset) SessionFactory startup FAILED: MappingException -> MappingException: The increment size of the [seq_pooled_item] sequence is set to [50] in the entity mapping but the mapped database sequence increment size is [1] == hibernate.id.sequence.increment_size_mismatch_strategy = EXCEPTION SessionFactory startup FAILED: MappingException -> MappingException: The increment size of the [seq_pooled_item] sequence is set to [50] in the entity mapping but the mapped database sequence increment size is [1] == hibernate.id.sequence.increment_size_mismatch_strategy = LOG SessionFactory started application instance A : ids [1, -47, -46] application instance B : FAILED after ids [-46, -45, -44] : ConstraintViolationException -> JdbcSQLIntegrityConstraintViolationException: SQLState 23505, Unique index or primary key violation: "PUBLIC.CONSTRAINT_D PRIMARY KEY ON PUBLIC.SEQPOOLEDITEM(ID) ( /* key:-46 */ CAST(-46 AS BIGINT), 'a2')"; SQL statement: database sequence INCREMENT BY, as the database sees it : 1 == hibernate.id.sequence.increment_size_mismatch_strategy = FIX SessionFactory started application instance A : ids [1, 2, 3] application instance B : ids [4, 5, 6] database sequence INCREMENT BY, as the database sees it : 1 == hibernate.id.sequence.increment_size_mismatch_strategy = NONE SessionFactory started application instance A : ids [1, -47, -46] application instance B : FAILED after ids [-46, -45, -44] : ConstraintViolationException -> JdbcSQLIntegrityConstraintViolationException: SQLState 23505, Unique index or primary key violation: "PUBLIC.CONSTRAINT_D PRIMARY KEY ON PUBLIC.SEQPOOLEDITEM(ID) ( /* key:-46 */ CAST(-46 AS BIGINT), 'a2')"; SQL statement: database sequence INCREMENT BY, as the database sees it : 1 ######## POSTGRES ######## SKIPPED: no Docker daemon was reachable when this transcript was generated, so PostgreSQL was not run.