SMP/E data sets for two releases

A single set of SMP/E zone structures can record only one release of Db2. Maintaining separate zone structures for both Db2 13 and your previous release is strongly recommended until you are sure that you will not need to fall back.

The SMP/E jobs that are provided with Db2 assume that you will allocate a new set of SMP/E data sets for the new release. When you run your allocation job (DSNALLOC), it creates a set of SMP/E data sets. If you choose to reuse your Db2 12 zone structure, you can run job DSNTIJUD to delete SMP/E data for Db2 12. However, after you run this job, you cannot fall back to your previous release.

You can create an additional set of SMP/E data sets either by copying them from a prior release of Db2 or by allocating a new set. Allocating a new set is faster because no data must be deleted.