FALL BACK PLAN FROM A NEWER RELEASE TO AN OLDER

Document ID : KB000100853
Last Modified Date : 11/06/2018
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Issue:
What is your general Back-out Plan for the CA DB2 Tools R20. Do we need to backup DDL, perform image copies, unload the data.
Resolution:
To fallback to an older release(R19, R18 or R17) point back to the R19/R18/R17 datasets and follow these recommendations:
1. An Xmanager task must be running at the proper code level. So if for some reason  there is a need to fallback R20 Xmanager will need to be stopped, point back to the R19 datasets, and restart Xmanager under R19/18/17.
2. While upgrading to R20,  consider changing the plan names in the PLANSxx member so that they are different than the  older releases(R19, R18, R17) plan names.
Make certain to skip the Free Obsolete Packages and Plans Post Install task so R19 packages / plans are available if you need to fallback.