I don't have any documents on this process. Upgrades should always be taken on a case-by-case basis, which makes writing a generic document rather tricky. It is more likely to mislead than help in many cases.
The basic process is:
- Upgrade the clusterware on all nodes in the cluster. You can do this using rolling upgrades or in one shot.
- Upgrade the databases that are used the newly upgraded clusterware.
The process is documented in the Oracle manuals. These are probably good starting points.http://docs.oracle.com/cd/E11882_01/rac ... m#BABJICHFhttp://docs.oracle.com/cd/E11882_01/ins ... m#BABFGAHDhttp://docs.oracle.com/cd/E11882_01/ser ... m#BABEBHEI