SQL> SQL> CREATE SEQUENCE test_seq; Sequence created. SQL> SQL> SELECT test_seq.nextval FROM DUAL; NEXTVAL ---------- 1 SQL> SELECT test_seq.nextval FROM DUAL; NEXTVAL ---------- 2 SQL> SELECT test_seq.nextval FROM DUAL; NEXTVAL ---------- 3 SQL> SQL> DROP SEQUENCE test_seq; Sequence dropped. SQL> SQL>