DB Connect for SQL on Unix Platform for BI 7.0

Hi All,

My requirement is to extarct the data from MS SQL to BI on HP-UNIX server with Oracle data base. I have seen in lots of posts that we need have atleast one Windows App.server to install DBSL and DB client on BI. But I have checked the BI System configurations in some fo the my previous clients, they have exact same config. as mine. They are using DB Connect without any issues. My basis team says that its not possible. Would anyone please update me on that. I have checked the system config. in system menu-->status. BI sytem config. of mine are:

OS: HP-UX,

DB: Oracle,

Release: 10.2.0.2.0

BI 2004s,

Patch 14,

External DB: MS SQL.

I apprecaite your answers with points, thanks in advance.

Regards

Baba