Find lock records with Users and Responsibilities

I am using following query to find lock records but sometimes it does not show correct record. Means it does not show that user and responsibility which is locked.

select session_id "sid",s.SERIAL# "Serial",

object_name,

substr(os_user_name,1,10) "Terminal",

substr(oracle_username,1,10) "Locker",

nvl(lockwait,'active') "Wait",

decode(locked_mode,

2, 'row share',

3, 'row exclusive',

4, 'share',

5, 'share row exclusive',

6, 'exclusive', 'unknown') "Lockmode",

OBJECT_TYPE "Type",fs.USER_NAME,fs.RESPONSIBILITY_NAME,fs.USER_FORM_NAME

from v$locked_object lo,all_objects ao,v$session s,fnd_form_sessions_v fs

where lo.OBJECT_ID =  ao.OBJECT_ID