Some Useful Metalink Notes

• Has this Patch been applied?
  
  • How to check if a certain Patch was applied to Oracle Applications instance (11i or R12)? (Doc ID 443761.1)
  • How to check if a NLS Patch for a base US Patch has been applied? (Doc ID 390065.1)
     
• Invalid Objects
  
  • Troubleshooting Guide - invalid objects in the E-Business Suite Environment 11i and 12 (Doc ID 1325394.1)
     
• FAQ
  
  • Oracle E-Business Suite Patching FAQ for Release 11i and Release 12 (Doc ID 1325930.1)
  • NLS Frequently Asked Questions (Doc ID 399789.1)