Hacking Password

SQL> connect dbauser/dbapassword@mydatabase


Connected.

SQL> select username,password from dba_users where username = 'TESTUSER';


USERNAME PASSWORD
---------- ------------------

TESTUSER AEB6397C8E7598A7


SQL> alter user TESTUSER identified by temppwd1;
User altered.
SQL> connect testuser/temppwd1@mydatabase
Connected.
SQL> --do some work as testuser
SQL> connect dbauser/dbapassword@mydatabase
Connected.

SQL> alter user TESTUSER identified by values 'AEB6397C8E7598A7';