ALTER USER <nomeutente> IDENTIFIED BY "<nuova pwd>";
ALTER USER <nomeutente> ACCOUNT LOCK;
ALTER USER <nomeutente> ACCOUNT UNLOCK;
ALTER USER <nomeutente> PASSWORD EXPIRE;
ALTER USER <nomeutente> DEFAULT TABLESPACE users TEMPORARY TABLESPACE <Temp> QUOTA 100M ON users QUOTA 0 ON <my_data>;
SELECT ACCOUNT_STATUS FROM DBA_USERS WHERE USERNAME = <Account Name>