alter sequence 시퀀스명 restart 매뉴얼상으로는 "To restart the sequence at a different number, you must drop and re-create it." https://docs.oracle.com/en/database/oracle/oracle-database/19/sqlrf/ALTER-SEQUENCE.html#GUID-A6468B63-E7C9-4EF0-B048-82FE2449B26D https://rogertroller.com/2018/02/20/oracle-18c-alter-sequence-restart/ >>> I’m using 12.1 and the RESTART option worked as well. I hope Oracle document..