5.1 What's New in Oracle Exadata System Software Release 21.2

• Oracle Exadata X9M Support
  
• Persistent Storage Index
  
• Persistent Columnar Cache
  
• IORM Cluster Plan
  
• Smart Scan Metadata Sharing
  
• Oracle ASR Support for Cisco RoCE Network Fabric Switches and Management Network Switch
  
• Patch Manager Support for the Management Network Switch
  
• Options to Preserve Redundancy while Dropping a Physical Disk
  
• Faster Upgrades with ILOM Pre-Staging
  
• Faster Recovery from Flash Cache Failure
  
• Automatic Recovery from Disk Controller Cache Failure
  
• Enhanced Database Server Alerting
  
• Oracle ACFS I/O Caching in Flash Cache
  
• Smart Scan Fast Decryption
  
• Caching Flashback Log Writes in Exadata Smart Flash Cache
  
• Deprecated Features in Oracle Exadata System Software Release 21.2