Find lock session on specific table and kill it.
SELECT OBJECT_ID FROM DBA_OBJECTS WHERE OBJECT_NAME = 'EMPLOYEE_PROFILE_UPLOAD';
--113339
SELECT SID FROM V$LOCK WHERE ID1=113339;
--1042
SELECT SID, SERIAL# FROM V$SESSION WHERE SID=1042;
--1042 32514
ALTER SYSTEM KILL SESSION '1042,32514';
--system KILL altered.