SQL> connect system
Enter password:
Connected.
SQL> select account_status, lock_date, expiry_date from dba_users where username = 'HR';
ACCOUNT_STATUS LOCK_DAT EXPIRY_D
-------------------------------- -------- --------
OPEN 15.09.19
SQL> alter user hr identified by hr;
User altered.
SQL> connect hr/hr
Connected.
SQL>
Enter password:
Connected.
SQL> select account_status, lock_date, expiry_date from dba_users where username = 'HR';
ACCOUNT_STATUS LOCK_DAT EXPIRY_D
-------------------------------- -------- --------
OPEN 15.09.19
SQL> alter user hr identified by hr;
User altered.
SQL> connect hr/hr
Connected.
SQL>