The following features are new for Oracle Exadata Database Machine 12c Release 1 (12.1.2.3.0):

• Performance Improvement for Oracle Exadata System Software Updates
  
• Quorum Disk Manager Utility
  
• VLAN Support
  
• Adaptive Scrubbing Schedule
  
• IPv6 Support in ASR Manager
  
• Increased Maximum Number of Database Processes
  
• Cell-to-Cell Rebalance Preserves Storage Index
  
• ASM Disk Size Checked When Reducing Grid Disk Size
  
• Support for Alerts in CREATE DIAGPACK