since Sybase is not supporting ASE Web Services on a windows
x64 platform (i know, we use windows), we must find a new
way to call web services from our Stored Procedures (as we
currently run on windows x86, where ASE webservices are

Could 'java in ASE' be a solution for this? (For example, we
use a public web service to check if a VAT number is valid)

ps: Sybase does not support this for x64 version of windows,
they say there aren't even plans to do so. I'm aware that a
lot of users don't use windows as a database platform, but
we always have and probably will be for a long time. Is this
a matter of 'supply and demand'? (i don't like the thought
of running on a platform that sybase considers as 'not