On Mon, 23 Nov 2009 07:54:28 -0600, Rabbe, Luke <luke.ra...@countryfinancial.com> wrote:
>I know that using dynamic proclibs gives you the ability to change the proclib concatenations dynamically and also the ability to rebuild pointers if a library has gone into extents or been compressed. > >My shop uses static concatenations. We haven't needed to change the proclib concatenations in several years and JCL can be used to rebuild JES2's pointers if needed. I'd like to convert to dynamic proclibs because it seems more modern and cooler. But I wonder if it's really necessary for my installation and maybe I'd just be doing work for work's sake. > >Any opinions? Am I missing some benefits? > IMO the best benefit is the removal of the possibility of JCL error during JES2 start because someone moved or deleted a proclib. Remember, JES2 by default doesn't ENQ on the PROCLIBs and also PROCLIB data sets not in the master catalog may have their volser coded. So they could be accidentally deleted or perhaps moved by someone who didn't realize the impact (I'm sure we could start a war stories thread here, but let's not). With dynamic proclibs JES2 will still start and tell you about the problem if it can't find one of the libraries. After you fix it you can issue a $TPROCLIB(*) and it will attempt to reallocate the concatenation(s) per the parms. This was helpful to us back when we did tape based disaster recovery because some of the application PROCLIBs were not available for a while after the base system was IPLed. Prior to dynamic proclibs a different JES2 proc was used at the start and then the application proclibs were added after they were restored and JES2 was recycled. Cheers, Mark -- Mark Zelden Sr. Software and Systems Architect - z/OS Team Lead Zurich North America / Farmers Insurance Group - ZFUS G-ITO mailto:mark.zel...@zurichna.com z/OS Systems Programming expert at http://expertanswercenter.techtarget.com/ Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.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
