From Oracle FAQ
A patch is a software update designed to repair known problems or "bugs" in previous software releases.
It is generally recommended to only install patch-sets and only install one-off patches when required to do so. Patch-sets are tested and will minimized the risk of introducing bad patches into a stable environment.
Oracle Enterprise Manager also has a "Provisioning Pack" (cost option) that can be used to automate the deployment of patches for the database and underlying operating system.
|Glossary of Terms|