If you are using an Oracle database for storing your metadata you must ensure that Oracle JDBC driver and Oracle geometry libraries has been copied into directory WEB-INF/lib. That must be done by yourself because we are not allowed to redistribute these libraries.

For Oracle 10g ojdbc14_10g.jar, sdoapi.jar and sdoutl.jar are required. For Oracle 11g you must copy ojdbc6_g.jar (for JDK 6) oder ojdbc5_g.jar (for JDK 5 or JDK 6 ), sdoapi.jar and sdoutl.jar into your WEB-INF/lib directory.

You will find these file as part of your oracle installation or you can download them from Orcale web pages.