This IBM paper introduces the concept of flexible database clusters. This type of cluster is built on the IBM eServer xSeries servers or BladeCenter servers, and it features Oracle9i Real Application Clusters running on a PolyServe Matrix Server cluster file system. Proofs of concept and the joint IBM and Oracle certification process for assuring the interoperability of flexible database clusters are presented in this publication. It also features two case studies that demonstrate the benefits of the PolyServe Matrix Server for Oracle9i Real Application Clusters when implemented on xSeries or BladeCenter servers.
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