Thanks,Tom. Your reply really helps and now I understand. Thank you!
On 10/12/06, Tom Marchant <[EMAIL PROTECTED]> wrote:
On Thu, 12 Oct 2006 20:38:08 +0800, Johnny Luo <[EMAIL PROTECTED]> wrote: >Hi, >When setting up system data sets, I noticed two special things: > >1, Take PROGXX parmlib member as an example. When adding a > data set to APF list here, volume serial number should also be > specified plus dsname. > >In my opinion, it's because at the earlier stage of IPL CAS(Catalog Address >Space) >is still unavailable. But when will the CAS be created? I only know that >Master >Scheduler is the first address space. After that it's Master Scheduler's >responsibility >to create other address spaces. It has nothing to do with that. There can be multiple data sets with the same DSNAME, and they are not necessarily all APF authorized. There is also no requirement that APF authorized data sets be cataloged. If they are SMS managed, then that's a different story. They must be cataloged, and they can be specified as "SMS" in the APF list. then it's the cataloged data set that is APF authorized. > >2, Some system data sets must be cataloged in master catalog. > >Frankly speaking, I don't know the reason. If catalog service is already >available, It isn't. NIP does not have the ability to find and open user catalogs. The catalog address space does not get created until after the processing of parmlib, the creation of LPA and linklist and probably other events that slip my mind at the moment. >why must the 'master catalog'? I remembered I once read in one material >about >this topic one year ago but now I cannot find that pdf. > Try the Initialization and Tuning Reference. Tom Marchant ---------------------------------------------------------------------- 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
-- Best Regards, Johnny Luo ---------------------------------------------------------------------- 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
