Oracle 11g:Unpivot wiele kolumn i uwzględnij nazwę kolumny

Zmień swój UNPIVOT być takim

select *
from (
  select IDNUM,F1,F2,F3,E1,E2,H1,H2,
    null as E3,null as H3
  from T5
) A
UnPivot(
  (F,E,H) for sk in (
    (F1,E1,H1) as 'F1',
    (F2,E2,H2) as 'F2',
    (F3,E3,H3) as 'F3')
)
order by IDNUM,SK

To powinno wystarczyć