JDBC drivers for Oracle and Microsoft SQL Server databases are provided by the database vendors. If the JDBC driver for your database is not already installed, obtain the appropriate driver from the vendor Web site.
For the Oracle JDBC driver, go to http://www.oracle.com/technetwork/indexes/downloads/index.html. Scroll down to Drivers, and click JDBC.
For the Microsoft SQL Server JDBC driver, go to http://www.microsoft.com/downloads/en/default.aspx, and search for "SQL Server 2005 JDBC Driver."