Just Run the Below Script and after this kill the session :
select owner||’.’||object_name obj
,oracle_username||’ (‘||s.status||’)’ oruser
,os_user_name osuser
,machine computer
,l.process unix
,’||s.sid||’,’||s.serial#||’ ss
,r.name rs
,to_char(s.logon_time,’yyyy/mm/dd hh24:mi:ss’) time
from v$locked_object l
,dba_objects o
,v$session s
,v$transaction t
,v$rollname r
where l.object_id = o.object_id
and s.sid=l.session_id
and s.taddr=t.addr
and t.xidusn=r.usn
order by osuser, ss, obj ;
To kill the session :
Alter System kill Session ‘Sid,Serail#’ immediate ;
Thank you
Osama mustafa
Published by Osama Mustafa
Osama considered as one of the leaders in Cloud technology, DevOps and database in the Middle-East. I have more than ten years of experience within the industry. moreover, certfied 4x AWS , 4x Azure and 6x OCI, have also obtained database certifications for multiple providers.
In addition to having experience with Oracle database and Oracle products, such as middle-ware, OID, OAM and OIM, I have gained substantial knowledge with different databases.
Currently, I am architecting and implementing Cloud and DevOps. On top of that, I'm providing solutions for companies that allow them to implement the solutions and to follow the best practices.
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Technology Geek 
this topic Would be, Check who Use the same table you want to delete,this above query Display Tables not the particular recordthank-you
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