These topics contain last-minute features and changes that affect all platforms for Oracle Database 18c.

• Compatibility, Upgrading, Downgrading, and Installation
  
• Features Not Available or Restricted
  
• Deprecated and Desupported Features for Oracle Database
  
• Other Readmes, Release Notes, or Installation Guides
  There are additional documents for Oracle products that are associated with this Oracle Database release.
• Open Bugs Affecting All Platforms