Re: [SUSPECTED SPAM] Re: ALLOC command releasing space
See Bill Godfrey's message; the ALLOC specifies an average block size,
overriding the CYLINDER specification.
--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3
From: IBM Mainframe Discussion List on behalf of
David Spiegel
Sent: Monday, February 10, 2020 7:44 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: [SUSPECTED SPAM] Re: ALLOC command releasing space
Hi Fred,
This might occur because:
- Your shop has a storage software product (e.g. Mainview SRM) which
adjusts allocations automatically.
- Your shop has ALLOCATION Exits (The ISPF Allocation Exit is the not
the same as the TSO/Batch Allocation Exit).
Regards,
David
On 2020-02-10 19:27, Fred Kaptein wrote:
> Hello,
> I have a user that is allocating a data set in TSO and REXX using the
> following command
>
> ALLOC DA('ABCD.EFG') NEW CATALOG UNIT(SYSALLDA) DSNTYPE(LIBRARY) LRECL(121)
> RECFM(F B A) CYL SPACE(9) BLOCK(27951) DIR(100)
>
> The data set is allocated, but the unused space is released, so the data set
> is only 6 tracks.
> I allocate the same data set in ISPF 3.2 and the data set is allocated with 9
> cylinders.
>
> The same SMS management class and data class is assigned for both allocations.
>
> Is it possible not to release unused space when using the TSO ALLOC command?
>
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[SUSPECTED SPAM] Re: ALLOC command releasing space
Hi Fred,
This might occur because:
- Your shop has a storage software product (e.g. Mainview SRM) which
adjusts allocations automatically.
- Your shop has ALLOCATION Exits (The ISPF Allocation Exit is the not
the same as the TSO/Batch Allocation Exit).
Regards,
David
On 2020-02-10 19:27, Fred Kaptein wrote:
Hello,
I have a user that is allocating a data set in TSO and REXX using the following
command
ALLOC DA('ABCD.EFG') NEW CATALOG UNIT(SYSALLDA) DSNTYPE(LIBRARY) LRECL(121)
RECFM(F B A) CYL SPACE(9) BLOCK(27951) DIR(100)
The data set is allocated, but the unused space is released, so the data set is
only 6 tracks.
I allocate the same data set in ISPF 3.2 and the data set is allocated with 9
cylinders.
The same SMS management class and data class is assigned for both allocations.
Is it possible not to release unused space when using the TSO ALLOC command?
--
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.
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Re: ALLOC command releasing space
No, TSO ALLOC only allocates the dataset. correct the parameters and you should
be fine.
--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3
From: IBM Mainframe Discussion List on behalf of
Fred Kaptein
Sent: Monday, February 10, 2020 7:27 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: ALLOC command releasing space
Hello,
I have a user that is allocating a data set in TSO and REXX using the following
command
ALLOC DA('ABCD.EFG') NEW CATALOG UNIT(SYSALLDA) DSNTYPE(LIBRARY) LRECL(121)
RECFM(F B A) CYL SPACE(9) BLOCK(27951) DIR(100)
The data set is allocated, but the unused space is released, so the data set is
only 6 tracks.
I allocate the same data set in ISPF 3.2 and the data set is allocated with 9
cylinders.
The same SMS management class and data class is assigned for both allocations.
Is it possible not to release unused space when using the TSO ALLOC command?
--
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Re: ALLOC command releasing space
I wonder why space is being released with the TSO ALLOC command in the first
place, this ALLOC command does not do this by itself.
It must be defined somewhere in the mgmtclas definitions and/or ACS routines.
Kees.
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of Fred Kaptein
Sent: 11 February 2020 01:27
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: ALLOC command releasing space
Hello,
I have a user that is allocating a data set in TSO and REXX using the following
command
ALLOC DA('ABCD.EFG') NEW CATALOG UNIT(SYSALLDA) DSNTYPE(LIBRARY) LRECL(121)
RECFM(F B A) CYL SPACE(9) BLOCK(27951) DIR(100)
The data set is allocated, but the unused space is released, so the data set is
only 6 tracks.
I allocate the same data set in ISPF 3.2 and the data set is allocated with 9
cylinders.
The same SMS management class and data class is assigned for both allocations.
Is it possible not to release unused space when using the TSO ALLOC command?
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Re: ALLOC command releasing space
On Mon, 10 Feb 2020 18:27:03 -0600, Fred Kaptein wrote:
>Hello,
>I have a user that is allocating a data set in TSO and REXX using the
>following command
>
>ALLOC DA('ABCD.EFG') NEW CATALOG UNIT(SYSALLDA) DSNTYPE(LIBRARY) LRECL(121)
>RECFM(F B A) CYL SPACE(9) BLOCK(27951) DIR(100)
>
>The data set is allocated, but the unused space is released, so the data set
>is only 6 tracks.
>I allocate the same data set in ISPF 3.2 and the data set is allocated with 9
>cylinders.
>
>The same SMS management class and data class is assigned for both allocations.
>
>Is it possible not to release unused space when using the TSO ALLOC command?
>
>
The BLOCK and CYL keywords are mutually exclusive, and since BLOCK was
specified last it overrides CYL. The command is requesting space for 9 blocks
of size 27951, or about 4.5 tracks, plus 100 directory blocks, a little over 2
tracks, so I would expect it to get 7 tracks. If you use BLKSIZE instead of
BLOCKS you will get the 9 cylinders.
Bill
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Re: ALLOC command releasing space
Close=free is a function of the close file
Sent from my iPhone
> On Feb 10, 2020, at 18:27, Fred Kaptein wrote:
>
> Hello,
> I have a user that is allocating a data set in TSO and REXX using the
> following command
>
> ALLOC DA('ABCD.EFG') NEW CATALOG UNIT(SYSALLDA) DSNTYPE(LIBRARY) LRECL(121)
> RECFM(F B A) CYL SPACE(9) BLOCK(27951) DIR(100)
>
> The data set is allocated, but the unused space is released, so the data set
> is only 6 tracks.
> I allocate the same data set in ISPF 3.2 and the data set is allocated with 9
> cylinders.
>
> The same SMS management class and data class is assigned for both allocations.
>
> Is it possible not to release unused space when using the TSO ALLOC command?
>
>
> --
> For IBM-MAIN subscribe / signoff / archive access instructions,
> send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
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ALLOC command releasing space
Hello,
I have a user that is allocating a data set in TSO and REXX using the following
command
ALLOC DA('ABCD.EFG') NEW CATALOG UNIT(SYSALLDA) DSNTYPE(LIBRARY) LRECL(121)
RECFM(F B A) CYL SPACE(9) BLOCK(27951) DIR(100)
The data set is allocated, but the unused space is released, so the data set is
only 6 tracks.
I allocate the same data set in ISPF 3.2 and the data set is allocated with 9
cylinders.
The same SMS management class and data class is assigned for both allocations.
Is it possible not to release unused space when using the TSO ALLOC command?
--
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