select session_id from v$locked_object;
SELECT sid, serial#, username, osuser FROM v$session where sid = session_id ;
SQL> ALTER SYSTEM KILL SESSION ‘session_id ,sid‘;
select session_id from v$locked_object;
SELECT sid, serial#, username, osuser FROM v$session where sid = session_id ;
SQL> ALTER SYSTEM KILL SESSION ‘session_id ,sid‘;