text: column sum(ksmchsiz) format 999,999,999,999,999 heading 'Bytes'
  column ksmchcls format a8 heading 'Status'
  compute sum of sum(ksmchsiz) on report
  break on report
  select sum(ksmchsiz), ksmchcls from x$ksmsp
  group by ksmchcls
  /
  