Re: relationship between directory blocks and the number of members in a PDS ?
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 bytes - doc says first byte zeroes, TTR of "note list or scat/trans table" [0 in sample], one byte of length of that table [0 in sample], 3 bytes "main storage needed", ...) 0100C9C5 C1D5E4C3 F0F00067 0450006A *..IEANUC00...&.¦* 00100169 26E2 0839C80A 7800 *...S..H.* 00208804 E807FC00 1A001A01 C9C5 *h...Y.IE* 0030C1D5E4C3 F0F10092 15500095 1095 *ANUC01.k.&.n...n* 00400B0006E2 0839C801 3800 8804 *...S..H.h...* 0050E8095800 04000401 C9C5 C1D5E4C3 *Y.IEANUC* Note that the flags field in IEANUC00 is x'50', denoting two TTRs and 16 halfwords of data. The total length is 44, showing that the TTR space is included in the data length. Gerhard Postpischil Bradford, VT -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: relationship between directory blocks and the number of members in a PDS ?
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 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 bytes -
doc says first byte zeroes, TTR of "note list or scat/trans table" [0 in
sample], one byte of length of that table [0 in sample], 3 bytes "main
storage needed", ...)
using doc 38 yrs old of interface ? years old
IBM Mainframe Discussion List wrote on 05/01/2009
05:04:13 PM:
> 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 maximum
> of three per directory block.
>
>
> Gerhard Postpischil
> Bradford, VT
>
> --
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Re: relationship between directory blocks and the number of members in a PDS ?
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 maximum of three per directory block. Gerhard Postpischil Bradford, VT -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: relationship between directory blocks and the number of members in a PDS ?
>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 the EOF and thought that 44 blocks was the number per track. I never looked it up, and forgot about it over 20 years ago. I've now updated my crib-sheets, and, for those who will listen, I recommend 674 blocks as a starting point (1 cylinder), and if you really think you are going to have more than that times 4 (6, or 21), consider 645*NN-1. Where NN is the number of cylinders you want to allocate to the directory. DASD is cheap; spending mind-sweat (and time re-building them) is not! - Too busy driving to stop for gas! -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: relationship between directory blocks and the number of members in a PDS ?
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 then double or triple it :) > -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: relationship between directory blocks and the number of members in a PDS ?
And then double or triple it :) Dave Gibney Information Technology Services Washington State University > -Original Message- > From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On > Behalf Of Chris Hoelscher > Sent: Friday, May 01, 2009 11:44 AM > 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 adding members and check the directory blocks used after each > member > add - you should then get a good idea for YOUR circumstances how many > members will fill a directory block . > > > Chris Hoelscher > Senior IDMS & DB2 Database Administrator > Humana Inc > 502-476-2538 > choelsc...@humana.com > > you only need to test the programs that you want to work correctly > > > > > The information transmitted is intended only for the person or entity > to which it is addressed and may contain CONFIDENTIAL material. If you > receive this material/information in error, please contact the sender > and delete or destroy the material/information. > > -- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO > Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
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 adding members and check the directory blocks used after each member add - you should then get a good idea for YOUR circumstances how many members will fill a directory block . Chris Hoelscher Senior IDMS & DB2 Database Administrator Humana Inc 502-476-2538 choelsc...@humana.com you only need to test the programs that you want to work correctly The information transmitted is intended only for the person or entity to which it is addressed and may contain CONFIDENTIAL material. If you receive this material/information in error, please contact the sender and delete or destroy the material/information. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: relationship between directory blocks and the number of members in a PDS ?
Does it give any indication if it will properly display the statistics in the old (current) format? -Original Message- From: Tom Marchant [mailto:m42tom-ibmm...@yahoo.com] Sent: Friday, May 01, 2009 10:42 AM To: IBM-MAIN@bama.ua.edu Subject: Re: relationship between directory blocks and 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 will fit in a directory block. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: relationship between directory blocks and the number of members in a PDS ?
When someone does something that causes the rule of thumb to become broken, should we break their thumbs. Dennis Roach GHG Corporation Lockheed Martin Mission Services Flight Design and Operations Contract NASA/JSC Address: 2100 Space Park Drive LM-15-4BH Houston, Texas 77058 Mail: P.O. Box 58487 Mail Code H4C Houston, Texas 77258 Phone: Voice: (281)336-5027 Cell: (713)591-1059 Fax:(281)336-5410 E-Mail: dennis.ro...@lmco.com All opinions expressed by me are mine and may not agree with my employer or any person, company, or thing, living or dead, on or 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 Marchant wrote: > > On Fri, 1 May 2009 11:26:01 -0500, Chris Bowen wrote: > > > > 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. > > Ahh. Good catch. I'll have to watch for that. > -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: relationship between directory blocks and the number of members in a PDS ?
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 block. Ahh. Good catch. I'll have to watch for that. Kind regards, -Steve Comstock The Trainer's Friend, Inc. 303-393-8716 http://www.trainersfriend.com z/OS Application development made easier * Our classes include + How things work + Programming examples with realistic applications + Starter / skeleton code + Complete working programs + Useful utilities and subroutines + Tips and techniques ==> Check out the Trainer's Friend Store to purchase z/OS <== ==> application developer toolkits. Sample code in four<== ==> programming languages, JCL to Assemble or compile, <== ==> bind and test. <== ==> http://www.trainersfriend.com/TTFStore/index.html<== -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: relationship between directory blocks and 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 will fit in a directory block. -- Tom Marchant -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: relationship between directory blocks and the number of members in a PDS ?
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 Macro 4 The usual disclaimers apply. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: relationship between directory blocks and the number of members in a PDS ?
> -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 > members in a PDS ? > 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. As I learned here on this list, that's not *quite* true. It's 45 per directory track except for the last (or only) track, which is 44 + EOF. So use 44 for a one-track directory, and ((n - 1) * 45) + 44 for multiple-track directories, where "n" is the desired number of tracks. Peter This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: relationship between directory blocks and the number of members in a PDS ?
>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 for gas! -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: relationship between directory blocks and the number of members in a PDS ?
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: Interactive System Productivity Facility (ISPF) User's Guide Volume II z/OS Version 1 Release 10.0 Document Number SC34-4823-08 "Directory blocks Enter one of these: - For partitioned data sets, you must specify the number of directory blocks. Each 256-byte block accommodates these number of directory entries: - Data sets with ISPF statistics: 6 - Data sets without ISPF statistics: 21 - Load module data sets: 4-7, depending on attributes" Another Source: DFSMS Using Data Sets z/OS Version 1 Release 10.0 Document Number SC26-7410-08 "Each member in a data set and each alias need one directory entry apiece. If you expect to have 10 members (10 directory entries) and an average of 3 aliases for each member (30 directory entries), allocate space for at least 40 directory entries. Space for the directory is expressed in 256-byte blocks. Each block contains from 3 to 21 entries, depending on the length of the user data field. If you expect 200 directory entries, request at least 10 blocks." HTH! Groete / Greetings Elardus Engelbrecht -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: relationship between directory blocks and the number of members in a PDS ?
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). BTW: the numbers shouldn't be indended for exact calculations, rather for rough estimation. One cannot be sure there won't be any extra member im the PDS (some day). -- Radoslaw Skorupka Lodz, Poland -- BRE Bank SA ul. Senatorska 18 00-950 Warszawa www.brebank.pl Sd Rejonowy dla m. st. Warszawy XII Wydzia Gospodarczy Krajowego Rejestru Sdowego, nr rejestru przedsibiorców KRS 025237 NIP: 526-021-50-88 Wedug stanu na dzie 01.01.2009 r. kapita zakadowy BRE Banku SA (w caoci wpacony) wynosi 118.763.528 zotych. W zwizku z realizacj warunkowego podwyszenia kapitau zakadowego, na podstawie uchway XXI WZ z dnia 16 marca 2008r., oraz uchway XVI NWZ z dnia 27 padziernika 2008r., moe ulec podwyszeniu do kwoty 123.763.528 z. Akcje w podwyszonym kapitale zakadowym BRE Banku SA bd w caoci opacone. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: relationship between directory blocks and the number of members in a PDS ?
Here's another fun fact: You can print or copy a PDS' directory directly with IEBGENER by overriding the library's DCB parameters. For instance, the following JCL: //IEBGENER JOB (ACCT),'REPEAT MISTAKES ' //COPY1 EXEC PGM=IEBGENER,REGION=3072K,TIME=60 //SYSPRINT DD SYSOUT=* //SYSUT1DD DSN=THIS.IS.A.PDS,DISP=SHR, // DCB=(LRECL=256,BLKSIZE=256,RECFM=F) //SYSUT2DD SYSOUT=* //SYSIN DD DUMMY Will print the directory. Maybe not entirely useful, but it will entertain the curious and allow you to count the number of entries per directory block. Robert Crawford CICS Technical Support United Services Automobile Association (210) 913-3822 "Facts are meaningless. You could use facts to prove 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 blocks and the number of members in a PDS ? Lizette Koehler wrote: > 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 Blk if ISPF Statistics are ON > > I do not have numbers for PDS/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 members in a PDS ? For loadlib's, "it depends"; we teach 4-7 member entries per directory block (the source for that information is lost in the past somewhere), so using 4 is safe For non-loadlibs, you have room for 6 member entries per directory block w/ stats on, or 21 if stats are off. From experience, it always helps to over-allocate number of directory blocks, unless you have a library that will never have new members added (a software product delivered in unloaded PDS format might be like that, for example). For PDSEs, it doesn't matter, since the directory can dynamically grow as needed. Specify 1 at create time and let the system take care of it. Kind regards, -Steve Comstock The Trainer's Friend, Inc. 303-393-8716 http://www.trainersfriend.com z/OS Application development made easier * Our classes include + How things work + Programming examples with realistic applications + Starter / skeleton code + Complete working programs + Useful utilities and subroutines + Tips and techniques ==> Check out the Trainer's Friend Store to purchase z/OS <== ==> application developer toolkits. Sample code in four<== ==> programming languages, JCL to Assemble or compile, <== ==> bind and test. <== ==> http://www.trainersfriend.com/TTFStore/index.html<== -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: relationship between directory blocks and the number of members in a PDS ?
Lizette Koehler wrote: 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 Blk if ISPF Statistics are ON I do not have numbers for PDS/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 members in a PDS ? For loadlib's, "it depends"; we teach 4-7 member entries per directory block (the source for that information is lost in the past somewhere), so using 4 is safe For non-loadlibs, you have room for 6 member entries per directory block w/ stats on, or 21 if stats are off. From experience, it always helps to over-allocate number of directory blocks, unless you have a library that will never have new members added (a software product delivered in unloaded PDS format might be like that, for example). For PDSEs, it doesn't matter, since the directory can dynamically grow as needed. Specify 1 at create time and let the system take care of it. Kind regards, -Steve Comstock The Trainer's Friend, Inc. 303-393-8716 http://www.trainersfriend.com z/OS Application development made easier * Our classes include + How things work + Programming examples with realistic applications + Starter / skeleton code + Complete working programs + Useful utilities and subroutines + Tips and techniques ==> Check out the Trainer's Friend Store to purchase z/OS <== ==> application developer toolkits. Sample code in four<== ==> programming languages, JCL to Assemble or compile, <== ==> bind and test. <== ==> http://www.trainersfriend.com/TTFStore/index.html<== -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: relationship between directory blocks and the number of members in a PDS ?
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 bytes, but most are larger. Aliases use directory space as well. -- Binyamin Dissen http://www.dissensoftware.com Director, Dissen Software, Bar & Grill - Israel Should you use the mailblocks package and expect a response from me, you should preauthorize the dissensoftware.com domain. I very rarely bother responding to challenge/response systems, especially those from irresponsible companies. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: relationship between directory blocks and the number of members in a PDS ?
Take a look at DESERV Service. Reza Fatemi Senior Product Developer BMC Software -Original Message- From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of Rob Scott Sent: Thursday, April 30, 2009 3:50 AM To: IBM-MAIN@bama.ua.edu Subject: Re: relationship between directory blocks and the number of members in a PDS ? >I do not have numbers for PDS/E datasets and Directory Blocks. To the external user there is no such thing as a directory block within a PDS-E - the member information is just taken from the general space within the dataset. Rob Scott Developer Rocket Software 275 Grove Street * Newton, MA 02466-2272 * USA Tel: +1.617.614.2305 Email: rsc...@rs.com Web: www.rocketsoftware.com -Original Message- From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of Lizette Koehler Sent: 30 April 2009 11:45 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 Blk if ISPF Statistics are ON I do not have numbers for PDS/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 members in a PDS ? > > > -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: relationship between directory blocks and the number of members in a PDS ?
>I do not have numbers for PDS/E datasets and Directory Blocks. To the external user there is no such thing as a directory block within a PDS-E - the member information is just taken from the general space within the dataset. Rob Scott Developer Rocket Software 275 Grove Street * Newton, MA 02466-2272 * USA Tel: +1.617.614.2305 Email: rsc...@rs.com Web: www.rocketsoftware.com -Original Message- From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On Behalf Of Lizette Koehler Sent: 30 April 2009 11:45 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 Blk if ISPF Statistics are ON I do not have numbers for PDS/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 members in a PDS ? > > > -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
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 Blk if ISPF Statistics are ON I do not have numbers for PDS/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 members in a PDS ? > > > -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
relationship between directory blocks and the number of members in a PDS ?
Hi all, Can somebody tell me what is the relationship between directory blocks and the number of members in a PDS ? Thanks ... -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
