How to see list of objects that have been locked for 60 seconds or more

SELECT SUBSTR(TO_CHAR(w.session_id),1,5) WSID, p1.spid WPID,
SUBSTR(s1.username,1,12) “WAITING User”,
SUBSTR(s1.osuser,1,8) “OS User”,
SUBSTR(s1.program,1,20) “WAITING Program”,
s1.client_info “WAITING Client”,
SUBSTR(TO_CHAR(h.session_id),1,5) HSID, p2.spid HPID,
SUBSTR(s2.username,1,12) “HOLDING User”,
SUBSTR(s2.osuser,1,8) “OS User”,
SUBSTR(s2.program,1,20) “HOLDING Program”,
s2.client_info “HOLDING Client”,
o.object_name “HOLDING Object”
FROM gv$process p1, gv$process p2, gv$session s1,
gv$session s2, dba_locks w, dba_locks h, dba_objects o
WHERE w.last_convert > 60
AND h.mode_held != ‘None’
AND h.mode_held != ‘Null’
AND w.mode_requested != ‘None’
AND s1.row_wait_obj# = o.object_id
AND w.lock_type(+) = h.lock_type
AND w.lock_id1(+) = h.lock_id1
AND w.lock_id2 (+) = h.lock_id2
AND w.session_id = s1.sid (+)
AND h.session_id = s2.sid (+)
AND s1.paddr = p1.addr (+)
AND s2.paddr = p2.addr (+)
ORDER BY w.last_convert DESC;

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