oracle locked object in toad code example

Example: oracle locked objects

-- Oracle: Locked objects
SELECT
    vs.username,
    vs.osuser,
    vh.sid        locking_sid,
    vs.status     status,
    vs.module     module,
    vs.program    program_holding,
    jrh.job_name,
    vsw.username,
    vsw.osuser,
    vw.sid        waiter_sid,
    vsw.program   program_waiting,
    jrw.job_name
FROM
    v$lock                       vh,
    v$lock                       vw,
    v$session                    vs,
    v$session                    vsw,
    dba_scheduler_running_jobs   jrh,
    dba_scheduler_running_jobs   jrw
WHERE
    ( vh.id1,
      vh.id2 ) IN (
        SELECT
            id1,
            id2
        FROM
            v$lock
        WHERE
            request = 0
        INTERSECT
        SELECT
            id1,
            id2
        FROM
            v$lock
        WHERE
            lmode = 0
    )
    AND vh.id1 = vw.id1
    AND vh.id2 = vw.id2
    AND vh.request = 0
    AND vw.lmode = 0
    AND vh.sid = vs.sid
    AND vw.sid = vsw.sid
    AND vh.sid = jrh.session_id (+)
    AND vw.sid = jrw.session_id (+);