Cache Coherency in Oracle Parallel Server

摘要

Oracle Parallel Server (OPS) is a relational database system running on a shared disk cluster. OPS allows a concurrent direct access of multiple users from multiple instances to all the data in the database. Shared disk architecture employed by Oracle has a number of advantages: centre dot High availability: when one node fails then other nodes can proceed uninterrupted, with all the data still available to them. centre dot Aggregate CPU and memory resources centre dot Enhanced throughput centre dot Load balancing