"This article covers just a small subset of Oracle10G features. It is not intended to be an all-inclusive document, but rather a high level overview of some of the more important (and hopefully, interesting) changes contained in this release. Consider this the first of many articles on Oracle10G, so we’ll keep this one at the 30,000-foot level. In future articles we’ll take an in-depth look at each of the features described in this article and new features as they are announced. One of the benefits of being an Oracle instructor is having access to up-to-the-minute information on Oracle’s latest product sets. As Oracle distributes more information on Oracle10G features, I’ll make sure to keep you informed.

Grid Computing

Let’s get started with a brief overview of Oracle Grid Computing. Oracle describes grid computing as “separate groups of users dynamically sharing computer resources across high-speed networks to meet changing computational needs.” Grid environments utilize farms of low-cost computer servers in a shared environment. Oracle uses its Real Application Cluster technology (discussed below) along with the 10G Database and 10G Application Server to create the shared computing infrastructure required to implement grid computing. "

Decent Oracle 10G overview - good starting point for looking at 10G