Checking a partcular Oracle job by its job number

select j.log_user,
     j.job,
     j.broken,
     j.failures,
     j.last_date||':'||j.last_sec last_date,
     j.this_date||':'||j.this_sec this_date,
     j.next_date||':'||j.next_sec next_date,
     j.next_date - j.last_date interval,
     j.what
from (select dj.LOG_USER, dj.JOB, dj.BROKEN, dj.FAILURES,
             dj.LAST_DATE, dj.LAST_SEC, dj.THIS_DATE, dj.THIS_SEC,
             dj.NEXT_DATE, dj.NEXT_SEC, dj.INTERVAL, dj.WHAT
         from dba_jobs dj) j
where job='&jobno'
/