Changing an allocated DDNAME is a recipe for a train wreck. Just don't. The Allocation component is older than dirt. If you were meant to be able to do such a thing there would be an interface for it.
Chris Craddock Sent from my cell phone 281-770-1950 On Oct 7, 2011, at 12:29 PM, John McKown <joa...@swbell.net> wrote: > I don't think you can do a "rename" of an existing DD name. However, if > you have a driver program doing the allocations, perhaps you can change > it. Instead of allocating, say, SYSUT1. You allocate some unusual name, > perhaps #SYSUT1$ (just to pick one). Then, when you want to refer to > that "allocation", do a dynamic allocation DYNALLOC using keys > > DALDDNAM - use the called program's DD name, eg SYSUT1 > DALSTATS - use DISP=OLD (or maybe SHR) since you already have it > allocated > DALDCBDD - with #SYSUT1$ to pick up any DCB= > DALREFD - with #SYSUT1$ to refer back for any attributes > DALVLSER - with the volumes allocated to SYSUT1, other code will be > needed to get this information after the original allocation is done. > > I have never done anything like this, so I could be totally off-base on > the idea. Perhaps others can say more definitively. > > > > On Fri, 2011-10-07 at 17:11 +0200, Thomas Berg wrote: >>> -----Ursprungligt meddelande----- >>> Från: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] För Walt >>> Farrell >>> Skickat: den 7 oktober 2011 17:00 >>> Till: IBM-MAIN@bama.ua.edu >>> Ämne: Re: Rename of DDname ? >>> >>> On Fri, 7 Oct 2011 15:45:50 +0200, Thomas Berg <thomas.b...@swedbank.se> >>> wrote: >>> >>>> Are there any way to "rename" a ddname ? By that I mean leaving the >>> allocation as such untouched but the "name of the allocation"/DDname is >>> changed. >>>> An example of usage is when You have an allocation for application 1 with >>> DDname 'ABC' for dataset AAA.BBB and want to keep that and then want to >>> run application 2 which requires the same DDname (for dataset CCC.DDD). >>>> This is just *one* example. >>>> >>>> Is it a matter of "editing" the TIOT, or ? >>> >>> No, you can't edit the TIOT. How/where are you running these applications? >> >> For the moment the need is in the ISPF/TSO environment. There is programs >> that requires specific DDnames which is common to other programs, both >> homegrown and system types, and some of our dialogs need to run several of >> these at the same time (in sequence) but I want to preserve some allocations >> because of performance issues (e g big temporary datasets that takes a >> "long" time to create or that I need to keep the enques for, etc.). >> Common system names are such as "SYSUT1", "SYSUT2" etc. >> >> >> >> Regards, >> Thomas Berg >> _________________________________________ >> Thomas Berg Specialist A M SWEDBANK >> >> ---------------------------------------------------------------------- >> 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 > -- > John McKown > Maranatha! <>< > > ---------------------------------------------------------------------- > 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
