Hi Mauricio,
We at Support would recommend you to first upgrade the Oracle version to a supported version, and then upgrade CA PPM to 14.4. This is the corrected, and certified way.
Is there any reason you would like to specifically wait for the database upgrade?
The reason I am asking is that any ways to skip this error would actually be unsupported as well, and since the upgrade is not tested on 11.2.0.3 it may also fail. If you have the possibility to get Oracle upgraded first, this would be the best way to go.
Hope this helps -Nika