[Edit]
I didn't quite catch that OP was explicitely asking for SQL Server 2005. I'll still leave this solution here, because I think a link to
the source for connection strings is always a benefit. :)
[/Edit]
There is an absolutely great source for connection strings to all kinds of RDBMSs.
www.connectionstrings.com. Oracle RDMBS is handled on the same site:
http://www.connectionstrings.com/oracle[
^].
Best Regards,
—MRB