How can I access data from a SQL Server 2000 database on an NT box when I am sitting on an Oracle 220.127.116.11 database on a Unix box? This question was asked earlier but the answer was given from SQL Server to Oracle. What steps do I need to take to be able to access data on the SQL Server side from the Oracle side?
If you want to access a non-Oracle database from an Oracle database, then you need to install and configure Oracle's Heterogenous Services (HS). With HS, you can access a non-Oracle database from within Oracle across a database link. To the Oracle database, everything appears as if it were an Oracle database on the other end.
You can also go the other way as well. This means that you can access Oracle data from your SQL Server database. Microsoft has some good information at this site.