Installing or Upgrading Web TimeSheet 29 For an existing Microsoft SQL Server instance, and a NEW SQL database: For an existing Microsoft SQL Server instance, using an EXISTING SQL database: For an existing Oracle database: If you are using an Oracle database, you must have the ODP.NET 2.0 driver installed before you can install Web TimeSheet. For more information, refer to Chapter 3, Installing the ODP.NET Driver on page 17.