In case you need access to an application that runs on Oracle, the best thing you can do is access your database through the Application Server (Java, PHP, .NET).
This way, you communicate with your database using a common application-level protocol, such as HTTP, SOAP / HTTP, or what you can use natively on your Blackberry device. You do not need to provide your device with a direct connection to the Oracle database, which is not only simplified, but also more secure.
Since you are coding Blackberry applications in Java, you can be sure that you will have a lot of support for executing the HTTP request and processing its responses in your application.
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