Upgrade from 8.7 to 8.7.4 but need to keep the same model in both 8.7 and 8.7.4 versions for comparison testing
Article ID: 389668
Updated On:
Products
Issue/Introduction
Our CA 2E will be upgraded from version 8.7 to 8.7.4 and for comparison testing purpose we would need to have the same model in both 8.7 and 8.7.4 versions.
Do we need to roll back after upgrade? Ideally we don't like to do that but don't know how to accomplish that.
Environment
CA 2E 8.7.4
Resolution
There is nothing to roll back...this is why:
8.7.4 is DIFFERENT than the previous cumulative patch that it does NOT touch the CA 2E base/GA. In fact, if there were cumulative patches installed before(for example, you upgraded to 8.7.1 already), 8.7.4 rolls back ALL the cumulative patches all the way to CA 2E base/GA. As mentioned in the techdocs(see the link at the bottom) "
Your models are upgraded to CA 2E r8.7.4 by “applying” the related libraries to your models using the YAPYPTF command and not by “upgrading” using the regular YAPYMDLCHG command "
that is, for your model(let us give it a name ModelA), if your lib list has Y1874AC and Y2874AC at the start of the list, and if you run
YAPYPTF PTFLIB(Y2874AC) USRLIB(modelA) PRDLIB(Y2SY) LDOLIB(Y2SYVENG)
this modelA is "upgraded" to 8.7.4 level. On the other hand, if you don't have Y1874AC and Y2874AC in lib list and you don't run the YAPYPTF as mentioned above, the modelA is still at 8.7 GA/base level.
By backup the model before "upgrade" it, as the Note says"
Ensure that you have taken a backup of the models to which YAPYPTF command is to be applied, prior to upgrade to CA 2E r8.7.4 Levels. Also ensure that no one is using the models prior to applying the libraries."
your backup model of modelA can be at level 8.7 base/GA while modelA is upgraded to 8.7.4.
In short, with the new approach of 8.7.4, one could have BOTH 8.7 and 8.7.4 at the same time on the same server for the same user models.
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