Hello,
I don't think the new SQL Developer generates IDENTITY columns anymore. Esp when selecting Oracle 12C.R2.
Noticed this when converting over an older model and PK columns were suddenly not working....
Steps to recreate the bug are below. Brand new model with only one table.
DDL GENERATED:
CREATE TABLE table_1 (
pk NUMBER NOT NULL
);
ALTER TABLE table_1 ADD CONSTRAINT table_1_pk PRIMARY KEY ( pk );
CREATE SEQUENCE table_1_pk_seq START WITH 1 NOCACHE ORDER;