Oracle Tips by Burleson

Chapter 1 Oracle 10g Grid Computing

Introduction

Oracle RAC is a Parallel Database server which is based on the shared disk model. Shared Disk is accessed by multiple nodes in the cluster configuration.

Oracle RAC database is an aggregation of Oracle Database Instances, thereby enhancing database computing power. This architecture provides a truly scalable and highly available framework to meet and support complex and large databases needed for the critical business and scientific operations. Oracle database instance is an accumulation of memory structures.

Grid Computing

Every one is after the CPU cycles, or more appropriately the idle CPU cycles. In addition, the CPU cycles are available in the servers, which are under-utilized. For processing a large problem in a fairly small amount of time, you need more CPU cycles. The availability of such resources concurrently (in parallel mode) helps to compute much faster than a single server and its built-in processors.

The next important component is the availability of the ‘data’. Where is your data to process and then provide you with the results? The ‘data’ is stored in organized and structured databases. While storage systems physically store the data blocks on media devices (disk drives) in the storage arrays, provided mostly notably by, EMC, Hitachi and IBM, the servers fetch and process in the name of relational databases.