There are several different types of patches following are more common patches
This is simplest Patch to resolve a specific bug
Collection of One of Patches and enhancements related to a particular module. Alphabetic character denotes the Minipack version for the module.
Family Pack Patch
Collection of Minipack patches for a particular family group of application modules
Maintenance pack patch
This is collection of family packs that serves as point level release upgrade
Collection of one-off fixes for a family pack or maintenance pack Oracle Application 11.5.10 Consolidated Update 2 (CU2) is an example of consolidated patch.
Patch that is required for application to function with a newer version of technology stack
Patch that updates language specific information for multi language installation
This is a collection of one off patches that update code levels for particular product
Special patch for HR payroll customers it contains legislative data for multiple countries