Microsoft Transaction Server (MTS) is used in the middle tier as an application server for COM objects and transactions in distributed environments.

Oracle Services for Microsoft Transaction Server allows Oracle Database to be used as a resource manager in Microsoft Transaction Server-coordinated transactions, providing strong integration between Oracle solutions and Microsoft Transaction Server. Oracle Services for Microsoft Transaction Server can operate with Oracle Database running on any operating system.

Oracle Database takes advantage of a native implementation and also stores recovery information in Oracle Database itself. Oracle Services for Microsoft Transaction Server allows development in all industry wide data access interfaces, including Oracle Call Interface (OCI), ActiveX Data Objects (ADO), ADO.NET, OLE DB, and Open Database Connectivity (ODBC). The Oracle APIs, Oracle Data Provider for .NET and OCI, offer greatest efficiency.