Hi all,
Can somebody tell me what is the relationship between
directory blocks and the number of members in a PDS ?
Thanks ...
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Bruno Sugliani wrote:
Or even more just by following the book that says that 62 bytes is the max
size for an entry and 256 bytes is the directory size.
So 4 should be safe
Check again. It's 8 bytes for the name, 3 for TTR, 1 for flags,
and a maximum of 62 for the data field. So you can fit a
S229-3169-3 S/360 OS FE handbook 4th ed (1971July) p231to the rescue
It's 8 bytes for the name,
3 for a TTR ("first block")
1 for flags (recently linked vanilla modules seem to have X'2C')
3 per optional TTR (you can have 0 to 3 of them - recently linked vanilla
modules seem to have one - doc
Kirk Talman wrote:
3 per optional TTR (you can have 0 to 3 of them - recently linked vanilla
modules seem to have one - doc says "first block of text")
and a maximum of 31 "user" half words (0-62) for the data field (recently
linked vanilla modules seem to have 12 halfwords for total of 24 byt
this in a while. But this usually works for me.
Lizette
>
> Hi all,
> Can somebody tell me what is the relationship between
> directory blocks and the number of members in a PDS ?
>
>
>
--
To: IBM-MAIN@bama.ua.edu
Subject: Re: relationship between directory blocks and the number of members in
a PDS ?
That will depend on a couple of things.
A rule of thumb I have used is
Loadlib 4 members per DIR Blk
Source 7 member per Dir Blk if ISPF Statistics are OFF Source 4 member per Dir
S/E datasets and Directory Blocks.
I have not looked at this in a while. But this usually works for me.
Lizette
>
> Hi all,
> Can somebody tell me what is the relationship between
> directory blocks and the number of m
On Thu, 30 Apr 2009 11:09:35 +0200 CUNY Yann
wrote:
::>Can somebody tell me what is the relationship between
:>directory blocks and the number of members in a PDS ?
Each directory block has 256 bytes, of which 2 bytes are used for a count.
The minimum directory entry is 12
Blocks.
I have not looked at this in a while. But this usually works for me.
Lizette
Hi all,
Can somebody tell me what is the relationship between
directory blocks and the number of members in a PDS ?
For loadlib's, "it depends"; we teach 4-7 member entries
per direc
anything that's even
remotely true!"
- Homer Simpson
-Original Message-
From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of
Steve Comstock
Sent: Thursday, April 30, 2009 7:59 AM
To: IBM-MAIN@bama.ua.edu
Subject: Re: relationship between directory bl
3 for loadlibs (minimum)
6 for "text" members with ISPF stats
21 for "text" members without ISPF stats (max.)
I swear I read the numbers in some IBM documentation, but it was looong
time ago (OS/390 2.6 times).
Of course this is only for PDS. PDSE is another story (and expandable
directory).
R.S. wrote:
>3 for loadlibs (minimum)
>6 for "text" members with ISPF stats
>21 for "text" members without ISPF stats (max.)
>I swear I read the numbers in some IBM documentation, but it was looong
time ago (OS/390 2.6 times).
No need to swear. You are correct of course! ;-D
Source:
Interacti
>I do not have numbers for PDS/E datasets and Directory Blocks.
PDS/E is not as important, since you don't run out.
With PDS's, I usually allocate in multiples of 44, since that's how many
directory blocks fit on a track.
And, I usually allocate a cylinder's worth.
-
Too busy driving to stop fo
> -Original Message-
> From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On
> Behalf Of Ted MacNEIL
> Sent: Thursday, April 30, 2009 11:54 AM
> To: IBM-MAIN@bama.ua.edu
> Subject: Re: relationship between directory blocks and the number of
> member
Be aware that some products/tools create and use "large" directory entries.
For these purposes "large" means larger than a directory entry that
contains ISPF stats.
As far as I know Macro 4 markets no such products but our products do have
to deal with "large" directory entries.
Chris Bowen
Macr
On Fri, 1 May 2009 11:26:01 -0500, Chris Bowen wrote:
>Be aware that some products/tools create and use "large" directory entries.
Also note that the z/OS 11 preview says that the ISPF statistics may be
larger, reducing the number of members that will fit in a directory block.
--
Tom Marchant
Tom Marchant wrote:
On Fri, 1 May 2009 11:26:01 -0500, Chris Bowen wrote:
Be aware that some products/tools create and use "large" directory entries.
Also note that the z/OS 11 preview says that the ISPF statistics may be
larger, reducing the number of members that will fit in a directory blo
near this or any
other planet, moon, asteroid, or other spatial object, natural or
manufactured, since the beginning of time.
> -Original Message-
> Behalf Of Steve Comstock
> Subject: Re: relationship between directory blocks and the number of
members in a PDS ?
>
> Tom
the number of
members in a PDS ?
On Fri, 1 May 2009 11:26:01 -0500, Chris Bowen wrote:
>Be aware that some products/tools create and use "large" directory
entries.
Also note that the z/OS 11 preview says that the ISPF statistics may be
larger, reducing the number of members that
since everyone seems to have a (correct) different answer - how about just
create a PDS as you think it will be created (or exists) at your site -
start adding members and check the directory blocks used after each member
add - you should then get a good idea for YOUR circumstances how many
mem
t; To: IBM-MAIN@bama.ua.edu
> Subject: Re: relationship between directory blocks and the number of
> members in a PDS ?
>
> since everyone seems to have a (correct) different answer - how about
> just
> create a PDS as you think it will be created (or exists) at your site
-
> start ad
Or even more just by following the book that says that 62 bytes is the max
size for an entry and 256 bytes is the directory size.
So 4 should be safe
:-))
Bruno Sugliani
zxnetconsult(at)free(dot)fr
http://zxnetconsult.free.fr
On Fri, 1 May 2009 11:48:44 -0700, Gibney, Dave wrote:
>And the
>Or even more just by following the book that says that 62 bytes is the max
>size for an entry and 256 bytes is the directory size.
>So 4 should be safe
I went out years ago and decided I should never have to worry about directory
sizes.
Because I experimented with 1-track datasets, I missed t
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