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Mention what are the key characteristics of rac or why to use rac?
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Answer / Manish Kumar Gupt
"RAC (Oracle Real Application Clusters) is a database clustering solution for high availability and scalability. Key characteristics include:nn1. High Availability: RAC enables databases to survive hardware failures by automatically redirecting application requests to another node in the cluster.n2. Scalability: RAC allows databases to be scaled horizontally by adding more servers (nodes) to the cluster, improving performance as workload increases.n3. Parallel Query Execution: RAC supports parallel query execution, which can significantly improve query performance by distributing the workload across multiple nodes.n4. Automatic Failover: RAC includes built-in mechanisms for automatic failover in case of node or service failures.n5. Transparent Data Sharing (TDS): TDS allows multiple instances in a RAC to share the same database, improving performance and resource utilization by allowing data to be accessed from any node in the cluster."
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