How to cancel a concurrent request from db level?

How to cancel a concurrent request from db level? 

• The following query returns sid” and “serial#” once you have provided “request_id” of a Concurrent Program which is currently running.
• Take the values “sid” and “serial#” and kill the sessions at the database level.

Step1:Connect to SQLPLUS as the APPS user:

SQL> SELECT ses.sid,

 ses.serial#

 FROM v$session ses,

 v$process pro

 WHERE ses.paddr = pro.addr

 AND pro.spid IN (SELECT oracle_process_id

 FROM fnd_concurrent_requests

 WHERE request_id = &request_id);

Enter value for request_id:

Step2:Connect to SQLPLUS as the SYSTEM user:

SQL> ALTER SYSTEM KILL SESSION '&sid,&serial#'IMMEDIATE;

Enter value for sid:

Enter value for serial: