Re: want to read a dataset in use
I believe dataset ENQs have *always* been done against real dsnames. Aliases can't be used to bypass data integrity. Date: Wed, 9 Jul 2008 00:31:34 -0400 From: [EMAIL PROTECTED] Subject: Re: want to read a dataset in use To: IBM-MAIN@BAMA.UA.EDU Thinking outside the box, what happens if I define an ALIAS for the top level index (INDEX2 as an alias of INDEX1) or the full dataset name (INDEX.FILE2 as an alias of INDEX.FILE1) and try to access via the alias'ed name. Will it spot the duplicate usage or do the ENQ on the Alias'ed name and thus allow me o get away with it? Also, if I am APF authorized, I can allocate the dataset bypassing the ENQ and thus open it to use to write a duplicate/cloned copy which can then be scanned in lieu of the original. _ It’s a talkathon – but it’s not just talk. http://www.imtalkathon.com/?source=EML_WLH_Talkathon_JustTalk -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
On Wed, 9 Jul 2008 00:31:34 -0400, Robert A. Rosenberg wrote: Thinking outside the box, what happens if I define an ALIAS for the top level index (INDEX2 as an alias of INDEX1) or the full dataset name (INDEX.FILE2 as an alias of INDEX.FILE1) and try to access via the alias'ed name. Will it spot the duplicate usage or do the ENQ on the Alias'ed name and thus allow me o get away with it? Also, if I am Empirically, the initiator ENQs on the alias name at the beginning of the job, and attempts to allocate (thus ENQ) on the real name at the beginning of the step. If the latter does not succeed immediately, it does not wait for it to become available, but fails with a JCL error. ... Also, if I am APF authorized, I can allocate the dataset bypassing the ENQ and thus open it to use to write a duplicate/cloned copy which can then be scanned in lieu of the original. Sounds like it's not Shmuel's dog. OTOH, z/OS Unix files work great. -- gil -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
Hi Thanks everyone for the responses I think I should have been more specific. What I want to do is, to increase the dataset(QSAM) size. Records are written to the dataset by the 3rd step (CICS). The dataset is browsed by many programmers using ISPF while the job(CICS) is running, so I don't like to change the name.(The records browsed by ISPF may be missing some records due to buffer not flushed - it's acceptable) I don't like to delete/define the dataset while CICS is down. So I added some steps in front of the CICS step to delete and allocate with larger size so that next CICS recycle can use the increased dataset with the same dataset name. Obviously it didn't work with the message 'dataset in use' when tried to browse the dataset from ISPF. Any suggestion? Thanks in advance. Al -Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Al Chu Sent: Thursday, 3 July 2008 5:20 PM To: IBM-MAIN@BAMA.UA.EDU Subject: want to read a dataset in use Hi I am not a sysprog nor an expert. I want to read a dataset(seq) which is created by JCL DISP=(NEW,) of a long running job while the job is running. When i try to browse the dataset using ISPF, I have 'dataset in use' msg. I tried to rename the dataset using IDCAMS ALTER in the next step after the creation step and tried to read the renamed dataset, but still no good. The last step is the long running step which writes some records in the dataset. Is it possible? am i wasting time? Thanks in advance Al -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] 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 [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
The problem seems to be that any reference to a data set in JCL with an 'exclusive' disposition (new, old, mod) will render the data set inaccessible outside that job until it finishes. I haven't experimented, but I would think that creating the data set dynamically would work. For example, run a TSO TMP step //CREATEDS EXEC PGM=IKJEFT1B //SYSTSPRT DD SYSOUT=whatever //SYSTSIN DD whatever either with individual TSO commands (delete, allocate, etc.) or with a Rexx containing those commands. I'm pretty sure that the data set will be accessible because the job's initial TIOT will not have an entry for it. . . JO.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 626-302-7535 Office 323-715-0595 Mobile [EMAIL PROTECTED] al chu [EMAIL PROTECTED] ET.COM.AU To Sent by: IBM IBM-MAIN@BAMA.UA.EDU Mainframe cc Discussion List [EMAIL PROTECTED] Subject .EDU Re: want to read a dataset in use 07/08/2008 01:14 AM Please respond to IBM Mainframe Discussion List [EMAIL PROTECTED] .EDU Hi Thanks everyone for the responses I think I should have been more specific. What I want to do is, to increase the dataset(QSAM) size. Records are written to the dataset by the 3rd step (CICS). The dataset is browsed by many programmers using ISPF while the job(CICS) is running, so I don't like to change the name.(The records browsed by ISPF may be missing some records due to buffer not flushed - it's acceptable) I don't like to delete/define the dataset while CICS is down. So I added some steps in front of the CICS step to delete and allocate with larger size so that next CICS recycle can use the increased dataset with the same dataset name. Obviously it didn't work with the message 'dataset in use' when tried to browse the dataset from ISPF. Any suggestion? Thanks in advance. Al -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
On Tue, 8 Jul 2008 13:05:03 -0700, Skip Robinson wrote: The problem seems to be that any reference to a data set in JCL with an 'exclusive' disposition (new, old, mod) will render the data set inaccessible outside that job until it finishes. I haven't experimented, My understanding is, no, not until the job finishes, but only through the last step that has any JCL reference to the data set (new, old, mod, shr). but I would think that creating the data set dynamically would work. For example, run a TSO TMP step //CREATEDS EXEC PGM=IKJEFT1B //SYSTSPRT DD SYSOUT=whatever //SYSTSIN DD whatever either with individual TSO commands (delete, allocate, etc.) or with a Rexx containing those commands. I'm pretty sure that the data set will be accessible because the job's initial TIOT will not have an entry for it. But beware, if in a subsequent step your JCL references that data set, even with DISP=SHR, the job's inial TIOT will have an entry for it, and creating the data set dynamically will upgrade the ENQ to EXC, and the data set will remain inaccessible outside that job until that later step finishes. (Or so I've been told.) -- gil -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
At 19:13 -0500 on 07/08/2008, Paul Gilmartin wrote about Re: want to read a dataset in use: But beware, if in a subsequent step your JCL references that data set, even with DISP=SHR, the job's inial TIOT will have an entry for it, and creating the data set dynamically will upgrade the ENQ to EXC, and the data set will remain inaccessible outside that job until that later step finishes. (Or so I've been told.) -- gil Thinking outside the box, what happens if I define an ALIAS for the top level index (INDEX2 as an alias of INDEX1) or the full dataset name (INDEX.FILE2 as an alias of INDEX.FILE1) and try to access via the alias'ed name. Will it spot the duplicate usage or do the ENQ on the Alias'ed name and thus allow me o get away with it? Also, if I am APF authorized, I can allocate the dataset bypassing the ENQ and thus open it to use to write a duplicate/cloned copy which can then be scanned in lieu of the original. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
want to read a dataset in use
Hi I am not a sysprog nor an expert. I want to read a dataset(seq) which is created by JCL DISP=(NEW,) of a long running job while the job is running. When i try to browse the dataset using ISPF, I have 'dataset in use' msg. I tried to rename the dataset using IDCAMS ALTER in the next step after the creation step and tried to read the renamed dataset, but still no good. The last step is the long running step which writes some records in the dataset. Is it possible? am i wasting time? Thanks in advance Al -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
Al Chu [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED]... Hi I am not a sysprog nor an expert. I want to read a dataset(seq) which is created by JCL DISP=(NEW,) of a long running job while the job is running. When i try to browse the dataset using ISPF, I have 'dataset in use' msg. I tried to rename the dataset using IDCAMS ALTER in the next step after the creation step and tried to read the renamed dataset, but still no good. The last step is the long running step which writes some records in the dataset. Is it possible? am i wasting time? Thanks in advance Al This is not possible. The job has the dataset exclusive and this really means it has the dataset exlusively. There an other way, that might be usable for you: If the job can write to SYSOUT i.s.o. a dataset, you can read the output it has produced with SDSF while the job is running. Kees. ** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 ** -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
On Thu, 3 Jul 2008 02:20:08 -0500 Al Chu [EMAIL PROTECTED] wrote: :I am not a sysprog nor an expert. :I want to read a dataset(seq) which is created by JCL DISP=(NEW,) of a long :running job while the job is running. When i try to browse the dataset using :ISPF, I have 'dataset in use' msg. :I tried to rename the dataset using IDCAMS ALTER in the next step after the :creation step and tried to read the renamed dataset, but still no good. :The last step is the long running step which writes some records in the :dataset. :Is it possible? am i wasting time? It is possible, but will take some work. If it is acceptable to just read the records that have been firmed to dasd, you can write an APF program to read the DSCB and build a DEB that maps it. Then you can use QSAM, but expect possible I/O errors at the end. If you need to see records that are still in storage you will need to SRB over. Whether or not it is wasting time is a matter of opinion. If you want to read in between, where you attempted the rename, you can copy it instead and see the records from the first step. -- Binyamin Dissen [EMAIL PROTECTED] 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 [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
Binyamin Dissen [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED]... On Thu, 3 Jul 2008 02:20:08 -0500 Al Chu [EMAIL PROTECTED] wrote: :I am not a sysprog nor an expert. :I want to read a dataset(seq) which is created by JCL DISP=(NEW,) of a long :running job while the job is running. When i try to browse the dataset using :ISPF, I have 'dataset in use' msg. :I tried to rename the dataset using IDCAMS ALTER in the next step after the :creation step and tried to read the renamed dataset, but still no good. :The last step is the long running step which writes some records in the :dataset. :Is it possible? am i wasting time? It is possible, but will take some work. If it is acceptable to just read the records that have been firmed to dasd, you can write an APF program to read the DSCB and build a DEB that maps it. Then you can use QSAM, but expect possible I/O errors at the end. If you need to see records that are still in storage you will need to SRB over. Whether or not it is wasting time is a matter of opinion. If you want to read in between, where you attempted the rename, you can copy it instead and see the records from the first step. -- Binyamin Dissen [EMAIL PROTECTED] Binyamin, I thought about a similar answer, but with his opening sentence in mind, I thought it was neither wise, nor useful to him. Kees. ** For information, services and offers, please visit our web site: http://www.klm.com. This e-mail and any attachment may contain confidential and privileged material intended for the addressee only. If you are not the addressee, you are notified that no part of the e-mail or any attachment may be disclosed, copied or distributed, and that any other action related to this e-mail or attachment is strictly prohibited, and may be unlawful. If you have received this e-mail by error, please notify the sender immediately by return e-mail, and delete this message. Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its employees shall not be liable for the incorrect or incomplete transmission of this e-mail or any attachments, nor responsible for any delay in receipt. Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch Airlines) is registered in Amstelveen, The Netherlands, with registered number 33014286 ** -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
On Thu, 3 Jul 2008 09:24:44 +0200, Vernooy, C.P. - SPLXM wrote: Al Chu wrote in message news:[EMAIL PROTECTED]... Hi I am not a sysprog nor an expert. I want to read a dataset(seq) which is created by JCL DISP=(NEW,) of a long running job while the job is running. When i try to browse the dataset using ISPF, I have 'dataset in use' msg. I tried to rename the dataset using IDCAMS ALTER in the next step after the creation step and tried to read the renamed dataset, but still no good. The last step is the long running step which writes some records in the dataset. If that last step allocates the data set DISP=SHR, with the new name assigned by IDCAMS ALTER, I don't understand why it can't be read concurrently by other jobs. I don't believe ALTER leaves a persistent ENQ on the data set name. This is not possible. The job has the dataset exclusive and this really means it has the dataset exlusively. There an other way, that might be usable for you: If the job can write to SYSOUT i.s.o. a dataset, you can read the output it has produced with SDSF while the job is running. Same would be possible with a UNIX file (HFS or zFS), and access would be more generally possible than via SDSF. Or, preallocate the data set in a separate job, and allocate it only DISP=SHR in the long running job. Or, wrap your long running step in a Rexx exec which allocates the data set dynamically SHR. The exclusive ENQ will be freed after the last step which mentions the data set name in JCL. -- gil -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
I don't understand, if you can rename the dataset in a second step, why you can't browse it after the first step. I just ran a test and created a dsn, with catalog as the disposition, and a second 'wait' step. I could read and delete the dsn from the first step while the job was in the 'wait' second step. Jack Kelly 202-502-2390 (Office) -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
Jack Kelly wrote: I don't understand, if you can rename the dataset in a second step, why you can't browse it after the first step. I just ran a test and created a dsn, with catalog as the disposition, and a second 'wait' step. I could read and delete the dsn from the first step while the job was in the 'wait' second step. Huh? How could this be? You sound like you're running the first and second steps at the same time. Something's wacky here. 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 [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
On Thu, 3 Jul 2008 09:23:31 -0400, Jack Kelly wrote: I don't understand, if you can rename the dataset in a second step, why you can't browse it after the first step. I just ran a test and created a dsn, with catalog as the disposition, and a second 'wait' step. I could read and delete the dsn from the first step while the job was in the 'wait' second step. Ah, but I suspect that the OP had a DD statement for the data set in the second step, and that you didn't. -- gil -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
Steve Comstock wrote: Jack Kelly wrote: I don't understand, if you can rename the dataset in a second step, why you can't browse it after the first step. I just ran a test and created a dsn, with catalog as the disposition, and a second 'wait' step. I could read and delete the dsn from the first step while the job was in the 'wait' second step. Huh? How could this be? You sound like you're running the first and second steps at the same time. Something's wacky here. Oh, wait, I see what you mean. Perhaps: I could read and delete the dsn created in the first step while the job was in the second step. ? Or did you mean you could read and delete the dsn created in the first step from ISPF, while the job was in the second step? 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 [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
I want to read a dataset(seq) which is created by JCL DISP=(NEW,) of a long running job while the job is running. When i try to browse the dataset using ISPF, I have 'dataset in use' msg. I tried to rename the dataset using IDCAMS ALTER in the next step after the creation step and tried to read the renamed dataset, but still no good. The last step is the long running step which writes some records in the dataset. Is it possible? am i wasting time? [CLC] Have you tried specifying FREE=CLOSE on the DD statement for the dataset? CC -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
On Thu, 3 Jul 2008 09:39:04 -0400, Craddock, Chris wrote: [CLC] Have you tried specifying FREE=CLOSE on the DD statement for the dataset? I believe that while FREE=CLOSE may free the DDNAME for the current step, the ENQ remains in effect through the current step until the end of the last subsequent step containing a DD statement for the data set name. -- gil -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
On Thu, 3 Jul 2008 09:23:31 -0400, Jack Kelly [EMAIL PROTECTED] wrote: I don't understand, if you can rename the dataset in a second step, why you can't browse it after the first step. I just ran a test and created a dsn, with catalog as the disposition, and a second 'wait' step. I could read and delete the dsn from the first step while the job was in the 'wait' second step. To have a comparable test you would need a 3rd step that referenced that same data set (or a DD for that data set in the 2nd step). With your simple two-step approach, the system dropped the ENQ after the first step because no later step needed it. -- Walt -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
snip To have a comparable test you would need a 3rd step that referenced that same data set (or a DD for that data set in the 2nd step). With your simple two-step approach, the system dropped the ENQ after the first step because no later step needed it. unsnip That's the part that I missed or missed that thread. I assumed that if the dsn was able to be renamed in step 2, it wasn't used in further steps. This is what I attempted to imply with 'with catalog as the disposition'. Obviously I didn't do too well. Jack Kelly 202-502-2390 (Office) -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
Have you tried adding FREE=CLOSE to the dataset? The FREE parameter indicates when MVS is to free the resource(s) allocated to this DD statement. The resource(s) can be device(s), volume(s), or data set(s). FREE=CLOSE is ignored when: - The data set is a member of a concatenated group. - The task using the data set abnormally terminates. - The data set is referenced by another DD statement in the same or subsequent step. Lizette snip To have a comparable test you would need a 3rd step that referenced that same data set (or a DD for that data set in the 2nd step). With your simple two-step approach, the system dropped the ENQ after the first step because no later step needed it. That's the part that I missed or missed that thread. I assumed that if the dsn was able to be renamed in step 2, it wasn't used in further steps. This is what I attempted to imply with 'with catalog as the disposition'. Obviously I didn't do too well. unsnip -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
FREE=CLOSE is ignored when: ... - The data set is referenced by another DD statement in the same or subsequent step. That's the problem, the OP has a third long-running step that references the same dataset. Date: Thu, 3 Jul 2008 11:46:32 -0400 From: [EMAIL PROTECTED] Subject: Re: want to read a dataset in use To: IBM-MAIN@BAMA.UA.EDU Have you tried adding FREE=CLOSE to the dataset? The FREE parameter indicates when MVS is to free the resource(s) allocated to this DD statement. The resource(s) can be device(s), volume(s), or data set(s). FREE=CLOSE is ignored when: - The data set is a member of a concatenated group. - The task using the data set abnormally terminates. - The data set is referenced by another DD statement in the same or subsequent step. Lizette _ Don't get caught with egg on your face. Play chicktionary! http://club.live.com/chicktionary.aspx?icid=chick_wlhmtextlink1_feb -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
On 3 Jul 2008 09:15:52 -0700, [EMAIL PROTECTED] (J R) wrote: That's the problem, the OP has a third long-running step that references the same dataset. Is there any problem in referencing copies of the dataset then? -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
A similar question was asked a few months ago. Check the archives for more ideas. Bill Fairchild Rocket Software **Gas prices getting you down? Search AOL Autos for fuel-efficient used cars. (http://autos.aol.com/used?ncid=aolaut000507) -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: want to read a dataset in use
On Thu, 3 Jul 2008 11:10:45 -0400, Jack Kelly wrote: That's the part that I missed or missed that thread. I assumed that if the dsn was able to be renamed in step 2, it wasn't used in further steps. This is what I attempted to imply with 'with catalog as the disposition'. Obviously I didn't do too well. You and J R both hint at an interesting question. If I have: //STEP1 //SYSUT2 DD DISP=NEW,DSN=OLD.NAME //STEP2 EXEC PGM=IDCAML ALTER OLD.NAME NEW.NAME //STEP3 //SYSUT2 DD DISP=SHR,DSN=NEW.NAME ... Will the ENQ be SHR in STEP3, or will IDCAMS upgrade the SHR ENQ issued by the initiator to EXC in order to perform the rename? My only direct experience is that DEFINE/DELETE ALIAS requires no ENQ on the alias name; I nave no information on the related name. -- gil -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
