[시퀀스 생성]
CREATE SEQUENCE MSGADD_SEQ
  START WITH 1
  INCREMENT BY 1
  MAXVALUE 100000

[시퀀스 삭제]
DROP SEQUENCE MSGADD_SEQ;

[시퀀스 사용]
INSERT INTO MSG_ADDRES_INFO (
    ARR_SEQ
    ARR_DATE)
    VALUES (
    MSGADD_SEQ.NEXTVAL
    ,SYSDATE)


[시퀀스 조회]
SELECT * FROM USER_SEQUENCES