How to find the recommended CISZ value for the full DPV database (DPVHDB) for Finalist processing

Some of the Finalist databases have CISZ parameters provided in the IDCAMS DELETE/DEFINE jobs that Pitney Bowes provides.

However, the DPREPROH job that is supplied for DPVHDB does not include a CISZ parameter. 

According to Engineering, we do not have a CISZ recommendation as it depends on how each customer is using Finalist and DPV.  If you are using DPV=MEM and the entire database is read into memory, then a large CISZ should be used.
UPDATED:  August 4, 2017