Upgrading your Oracle release usually requires
- looking up and downloading patches
- reading the documentation
- locating the pre-requisite documentation and patches
- locating the post-requisite documentation and patches
- putting all this together and testing all the steps [usually a few times]
This can become further complicated if
- the database version is not the one shipped with the Oracle EBS release
- a change of operating system is required
Not every upgrade can be fully automated and it will be necessary to engage some of our services also.
For more information :
Upgrade Presentation [and Videos of an upgrade in progress]