11.2.0.2 in-place installation - NOT the way Oracle recommends
NOTE: We use NetApp filers for our storage device. We heavily utilize their flex-clone technology - it's analogous to Compellant's Replay - I don't know what other vendors call it. It's essentially a virtual copy of a disk volume.
So for years we've applied patchsets (and CPU's) the following way:
- take a snapshot of the volume that has the Oracle Database software installed on it
- use this snapshot to create a flex-clone
- mount this flex-clone on a new mount point on the database server
- change ORACLE_HOME to this new mount point
- install the patchset (or CPU) into this new HOME
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