Probier mal:

create view gregor/test01 as
select * from aruakox1pf left outer join
apo01pf on arfa = apfa and arabkz = apabkz and
arfakt = apfakt and aranr = apanr and aruanr = apuanr
and arpos = appos
left outer join adr01pf on adkto = akid4