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Migrating Oracle Databases from Exadata to Amazon RDS for Oracle: Addressing Performance Considerations

Database Blog

This comprehensive article provides a detailed guide for migrating Oracle databases from Exadata to Amazon RDS for Oracle, focusing on performance considerations and optimization strategies:

  • Key migration challenges include high I/O indicators, complex Exadata feature usage, and potential performance degradation
  • Recommended approach involves:
    • Analyzing Automatic Workload Repository (AWR) reports
    • Identifying SQLs using Exadata-specific features
    • Examining execution plans and I/O statistics
  • Alternative performance optimization strategies for RDS Oracle include:
    • Partitioning
    • Indexing
    • Materialized views
    • Database In-Memory option
    • Memory-optimized instances
  • Recommended additional techniques:
    • Using Amazon ElastiCache
    • Conducting proof of concept (PoC)
    • Deconsolidating databases
    • Offloading analytical workloads

The article emphasizes a strategic, granular approach to migration, focusing on understanding workload characteristics and leveraging RDS Oracle's advanced features to maintain or improve performance.

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