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Oracl connectivity to Access/SQL server etc securedly

Heterogeneous Services

Oracle9i, like previous versions, supports heterogeneous services to allow data in non-Oracle database to be queried using SQL. This support has been in the form of transparent gateways, which are vendor specific, or generic connectivity which uses ODBC or OLEDB to make the connections.

The functionality supported by generic connectivity is typically more limited than that possible when using vendor specific gateways, but it is quick and simple to configure.
The steps listed below can be used to connect Oracle to any ODBC compliant database (MS Access, SQL Server etc.) on the local server: Click for More