Always a challenge patching a Real application cluster. My assignment,  goal in this is to bring Oracle Clusterware ( 11.1.0.7.0)  (without any PSU patches installed) to 11.2.0.3.0.  Grid Infrastructure. This will be performed in two steps , in two maintenance windows in order to minimize the change of breaching SLA of maintenance windows.

Happy reading ,

Mathijs

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