The whole OS uses Dynalloc everywhere Sent from my iPhone
Sorry for the autocorrect issues > On Dec 21, 2017, at 17:10, Frank Swarbrick <[email protected]> > wrote: > > Doesn't CICS itself primarily use dynamic allocation for most files? > ________________________________ > From: IBM Mainframe Discussion List <[email protected]> on behalf of > Edward Gould <[email protected]> > Sent: Wednesday, December 20, 2017 11:14 PM > To: [email protected] > Subject: Re: Disable DYNALLOC? > >> On Dec 20, 2017, at 7:25 PM, CM Poncelet <[email protected]> wrote: >> >>>> From a recent thread (rant?) in ASSEMBLER-LIST: >>> >>> ... Do you stand by "SVC 99 for good measure"? Generally, products >>> do not implement it for good reason. Irrelevant in CICS and IMS. >>> In batch, it bypasses job scheduler, job restart, violates production >>> control requirements, bypasses JES3 resource management >>> and potentially poses a production security risk. TSO has the >>> alloc command which can easily be used in clists. It exists >>> because of MVS UNIX. ... >>> >>> Disregard the anachronism in the last sentence. If, hypothetically, >>> DYNALLOC except by initiator is so harmful as to be prohibited in >>> production jobs, is there any way to do so? If it were possible, >>> what would be the collateral damage? What fraction of production >>> jobs would work, unmodified, without using DYNALLOC? >>> >>> Are code reviews a better technique? Other (specify)? >>> >>> — gil > > Gil, > I won’t go into the details as I am not sure I know all of them. We had a > fairly large CICS system of at least 1400 users. One of the illustrious > consultants got involved in a data center issue and decided to bypass the DC > issue by attaching the OCR document reader from CICS and read the OCR > documents directly. We had no real idea that this was going on. This was also > during our trials and tribulation with the infamous (to us) enque problem. I > get a call saying that CICS is having an issue and that I should investigate. > I am sitting at the system console and the operators get a phone call to ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
