Query to find locked object in the database

select * from dba_objects
select do.object_name,sid,s.serial#,s.osuser,
row_wait_obj#, row_wait_file#, row_wait_block#, row_wait_row#, --s.session_id,
dbms_rowid.rowid_create ( 1, ROW_WAIT_OBJ#, ROW_WAIT_FILE#, ROW_WAIT_BLOCK#, ROW_WAIT_ROW# )
from v$session s, dba_objects do
where s.ROW_WAIT_OBJ# = do.OBJECT_ID ;