Re: DDM experiences

["Al Barsa" <barsa@xxxxxxxxxxxxxxxxxxx>]

No improvements, other than the fact that the hardware is much faster
today.

DDM is basically slow.  If you want to validate data from another system on
a random basis interactively (so the gating factor is human delay), DDM is
fine.  If you want to age your accounts receivable in a batch program where
the A/R detail file is "Update Primary" (from an RPG perspective), DDM is
too slow to be practical.

We had a situation last weekend where we filled up all of the DASD on one
system with only a QIC tape drive with a very large dump (over 100,000
pages), so we created a source physical file on another system (where we
have fast tape drives), and a DDM of it in the filled system, and then did
CPYSPLF in batch.  It took over a day.

Al

Al Barsa, Jr.
Barsa Consulting Group, LLC

400>390

914-251-1234
914-251-9406 fax

http://www.barsaconsulting.com
http://www.taatool.com






                      Karen.Eder@idealind
                      ustries.com                To:       
midrange-l@midrange.com
                      Sent by:                   cc:
                      midrange-l-admin@mi        Subject:  DDM experiences
                      drange.com


                      06/06/2002 02:59 PM
                      Please respond to
                      midrange-l







I am looking for some feedback and/or experiences with DDM files.  My
previous experience using them was so-so and at least 8 years ago or so.
Coworkers here have mixed opinions so I thought I'd see what this group had
to say.  If any of you can offer any feedback, I sure would appreciate it.

In case there are any recent major enhancements in this area, currently our
systems are all running at 4.5; but if 5.1 had great improvements in this
area, it could be considered.

Thanks, Karen


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