Place JDBC driver

All JDBC driver (jar) can be place in ext directory

Microsoft SQL server JDBC driver

TDS is an open source 100% pure Java (type 4) JDBC 3.0 driver for Microsoft SQL Server (6.5, 7, 2000 and 2005) and Sybase (10, 11, 12, 15). jTDS is based on FreeTDS^? and is currently the fastest production-ready JDBC driver for SQL Server and Sybase. jTDS is 100% JDBC 3.0 compatible, supporting forward-only and scrollable/updateable ResultSets^?, concurrent (completely independent) Statements and implementing all the DatabaseMetaData^? and ResultSetMetaData^? methods. C

You can download from http://jtds.sourceforge.net/

Oracle JDBC Driver

JDK 1.1-compatible classes are in classes111.jar or .zip; JDK 1.2 (or higher) compatible classes are in classes12.jar; JDK 1.4-compatible classes are in ojdbc14.jar. Presuming you use a Sun Microsystems JDK, make sure the appropriate JAR/ZIP file name is in your classpath setting. There may also be alternative JDBC driver libraries available, such as classes12_g.jar, which permits driver debugging information to be printed.

For more information about libraries and required path and classpath settings for Oracle JDBC, refer to the Oracle9i JDBC Developer's Guide and Reference.

Above as quoted from Oracle Web Reference

-- SooGuan - 27 Dec 2005