The workload planning facility is flexible, but using it to compare dissimilar systems results in data that appears to be good, but probably is not. Such data must not be used for the basis of decisions.
One way to avoid this situation is to do separate extracts from the CA WA CA 7 Edition database, creating a series of data files. If all the information is needed in a particular projection run, concatenate the files for more universal results. Even here remember that the values of the WLP1 parameters are applied globally in the concatenated data.
For example, if a site has two mainframes, and jobs can run on either CPU. To do a projection run involving jobs that run on both CPUs, the source information for the projection run is extracted from the CA WA CA 7 Edition database. The values for the parameters to use in the projection run are applied globally. But the system does not allow a separate set of values applied to parameters for one CPU and another set applied to the other CPU in the same run.
The two overall best uses of projection are studying the effects of proposed system upgrades, perhaps the reintegration of systems as a result of the upgrades, and troubleshooting problem devices and applications.
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