Oracle lock 풀기

1. Oracle lock 풀기
2. --lock user 확인
3. --account_status 필드값 확인( LOCKED 계정확인)
4. select * from dba_users;
5. 
   
6. --lock user unlock
7. alter USER 계정 account UNLOCK;
8. EX)
9. alter USER SCOTT  account UNLOCK;