Jens Lenge wrote:
> Hello world,
>
> I want to add a new numeric column "id" into an existing table

Please don't.

SELECT keyword
FROM gv$reserved_words
WHERE keyword LIKE 'ID%;
--
Daniel A. Morgan
University of Washington
damorgan@x.washington.edu
(replace x with u to respond)
Puget Sound Oracle Users Group
www.psoug.org