Concatenation of FB and VB isn't going to work. I prefer VB, but changing it 
after the fact is a user hostile move.


--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3

________________________________________
From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Tim 
Hare <haresystemssupp...@comcast.net>
Sent: Sunday, May 12, 2019 10:35 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Concatenating VB and FB ?

I seem to be finding different answers on this.

A vendor used to ship some files as PDSes with RECFM=FB and LRECL=80 (BLKSIZE 
23440).   User-customized members at this shop were put in a different PDS, 
with the same attributes, and concatenated in cataloged procedures,  ahead of 
the vendor's libraries.  Pretty standard practice I'm sure most are familiar 
with.

Suddenly, because (I'm told) of a merging of code bases at the vendor, their 
PDSes are now RECFM=VB and LRECL=2044 (BLKSIZE 27998) !   My instincts tell me 
this isn't going to work well, but with changes in concatenation of libraries 
over the course of my career I'm not sure.    Here's what I think:  because of 
the "new" rule where the largest BLKSIZE sets the buffer size, we'll be OK for 
reading the blocks (23440 fits into 27998)  but  when we try to read a member 
from the VB library, the RDWs are going to mess things up.

I have tried searching for the answer,  but haven't, apparently, found the 
right source yet.

What say you all?

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