A lrecl = 0 and blksize = 0 and recfm = u , IMHO i wou
Guys:

A lrecl = 0 and blksize = 0 and recfm = u , IMHO i would have thought you need 
a 
lrecl or blksize, how many programs fo you know would allocate such a dataset..
I dont know of many...

 
Scott J Ford
 




________________________________
From: Ron Hawkins <[email protected]>
To: [email protected]
Sent: Fri, April 1, 2011 2:04:51 PM
Subject: Re: DATACLASS

Ted,

What I find unusual about your explanation is that I can allocate a dataset
in ISPF 3.2 that ISPF is unable to open.

If ISPF opens the dataset at allocation, should I expect to find an SMF
record when it is closed?

This dataset was allocated from ISPF 3.2 by only providing the space values.

.                              Data Set Information
.
.  Command ===>
.
.
.
.  Data Set Name . . . . : HAWKINS.ALLOC.TEST
.
.
.
.  General Data                          Current Allocation
.
.  Management class . . : **None**        Allocated tracks  . : 5
.
.  Storage class  . . . : **None**        Allocated extents . : 1
.
.    Volume serial . . . : PE1USF
.
.    Device type . . . . : 3390
.
.  Data class . . . . . : **None**
.
.    Organization  . . . : PS            Current Utilization
.
.    Record format . . . : U              Used tracks . . . . : 0
.
.    Record length . . . : 0              Used extents  . . . : 0
.
.    Block size  . . . . : 0
.
.    1st extent tracks . : 5
.
.    Secondary tracks  . : 1              Dates
.
.    Data set name type  :                Creation date . . . : 2011/04/01
.
.    SMS Compressible. . : NO              Referenced date . . : 2011/04/01
.
.                                          Expiration date . . : ***None***
.

As expected, ISPF cannot open it, so how does it handle opening this in ISPF
3.2?
.    Menu  Options  View  Utilities  Compilers  Help
.
.
----------------------------------------------------------------------------
--  .
.  DSLIST - Data Sets Matching HAWKINS                        Invalid block
size  .
.  Command ===>                                                  Scroll ===>
CSR  .
.
.
.  Command - Enter "/" to select action                  Message
Volume  .
.
----------------------------------------------------------------------------
--- .
.          HAWKINS
*ALIAS  .
.  B        HAWKINS.ALLOC.TEST
PE1USF  .

Ron



> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:[email protected]] On
Behalf Of
> Ted MacNEIL
> Sent: Friday, April 01, 2011 9:32 AM
> To: [email protected]
> Subject: Re: [IBM-MAIN] DATACLASS
> 
> Yes.
> I am.
> ISPF (long before SMS) always did that to ensure the DCB was set.
> You had to enter all the attributes, or it would not allocate.
> 
> I've written (and supported) many ISPF (or SPF) applications over the last
30
> years.
> 
> I don't remember where it's documented, but I remember the behaviour.
> 
> -
> Ted MacNEIL
> [email protected]
> 
> -----Original Message-----
> From: Ron Hawkins <[email protected]>
> Sender: IBM Mainframe Discussion List <[email protected]>
> Date:        Fri, 1 Apr 2011 06:46:56
> To: <[email protected]>
> Reply-To: IBM Mainframe Discussion List <[email protected]>
> Subject: Re: DATACLASS
> 
> Ted,
> 
> Are you certain this is correct?
> 
> I thought was simply because ISPF 3.2 provided enough additional DCB
> information for the DSORG to be assigned. Ascertaining the DSORG of a
> dataset is a fundamental requirement of SDB, and SDB works just fine with
> IEFBR14 when enough DCB info is provided.
> 
> > ISPF opens and closes files that are created by it, thereby giving a
full
> dcb.
> > IEFBR14 does not.
> >
> 
> Ron
> 
> 
> ----------------------------------------------------------------------
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