>‎The following items should be noted when using the concatenate function:
    ...
  >  If the data sets have different block sizes, you must specify the data set 
with the largest block size first.  ...

>Didn't they remove that restriction last year?

A lot longer ago than last year.
Pre-z/OS, iirc.

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-teD
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  Original Message  
From: Paul Gilmartin
Sent: Wednesday, April 2, 2014 17:08
To: [email protected]
Reply To: IBM Mainframe Discussion List
Subject: Allocating a concatenation

In:

ALLOCATE command operands
z/OS TSO/E Command Reference
SA32-0975-00 
http://pic.dhe.ibm.com/infocenter/zos/v2r1/topic/com.ibm.zos.v2r1.ikjc500/alloccmd.htm

I read:
...
The following items should be noted when using the concatenate function:
...
If the data sets have different block sizes, you must specify the data set with 
the largest block size first. ...

Didn't they remove that restriction last year?
...
The system ignores all operands except for DATASET/DSNAME, FILE/DDNAME, and
status operands. The following DCB attribute operands are allowed when 
concatenating
data sets:

BLKSIZE INPUT EROPT BUFOFF USING
BUFL OUTPUT BFTEK DEN
BUFNO BFALN DIAGNS TRTCH
NCP OPTCD LIMCT KEYLEN

So, those 17 DCB operands are allowed, but ignored, right?

RCF in order?

-- gil

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