Evaluating and rolling out the latest database patches is one of the most common tasks for database administrator. For Oracle products, you will constantly receive the notification from Oracle (at least)quarterly telling you that the patches you need to implement.However, they wont tell which patch you need for your database versions, and you have search through their slow Oracle support portal to the find patch you need.

To save time, normally I go directly to this document, Quick Reference to Patch Numbers for Database PSU, SPU(CPU), Bundle Patches and Patchsets (Doc ID 1454618.1), and in this document I can see all the patches that have been released for different versions of Oracle databases.

This Oracle document certainly worth saving in the bookmark -)