after full restore of the database, now with 8192 page size,  i got

Query
------------------------------------------------
select distinct
articles.art_id,
articles.art_article_nr,
generic_articles.ga_id,
link_art.la_id,
link_la_typ.lat_sort sort,
link_la_typ.lat_sup_id bra_id,
articles.art_replacement
from link_la_typ
inner join generic_articles on lat_ga_id = ga_id
inner join link_art on lat_la_id = la_id
inner join articles on la_art_id = art_id
where link_la_typ.lat_typ_id=:TYP_ID  and link_la_typ.lat_ga_id=:GA_ID
ORDER BY 7 ASC
       , 2 ASC

Plan
------------------------------------------------
PLAN SORT (SORT (JOIN (GENERIC_ARTICLES INDEX (GENERIC_ARTICLES_IDX1), LINK_LA_TYP INDEX (LINK_LA_TYP_IDX5), LINK_ART INDEX (LINK_ART_IDX1), ARTICLES INDEX (ARTICLES_IDX1))))

Query Time
------------------------------------------------
Prepare       : 16.00 ms
Execute       : 3,588.00 ms
Avg fetch time: 170.86 ms

Memory
------------------------------------------------
Current: 18,391,304
Max    : 18,452,704
Buffers: 2,048

Operations
------------------------------------------------
Read   : 273
Writes : 0
Fetches: 1,791
Marks  : 0


ARTICLES    79
GENERIC_ARTICLES    1
LINK_ART    79
LINK_LA_TYP    79