Gil, That note may have been before RNL conversion lists, in which case the RESERVE would have protected cross-system use.
Scott On Wed, Jan 26, 2011 at 10:56 AM, Paul Gilmartin <[email protected]>wrote: > On Wed, 26 Jan 2011 15:06:03 +0000, john gilmore <[email protected]> > wrote: > > >Scott Rowe writes: > > > ><begin snippet> > >... > ></end snippet> > > > > ... he is saying that it is better to have an enq with major and minor > qnames that cast their net too widely than to have no enq at all. > > > > ... true; but it is not nearly so interesting as it sounds. It is indeed > a straw man: no one has proposed abolishing the enq. > > > Robert Rosenberg appears to be agitating for narrowing the cast. Any > such change is hazardous, for example as recognized in: > > Title: z/OS V1R11.0 ISPF Planning and Customizing > Document Number: GC34-4814-08 > > APPENDIX1.1.2 ISPF data set integrity enqueue > ... > RESERVE SPFEDIT,dsname,E,44,SYSTEMS > ... > Attention: Do not install SPF and ISPF on the same system. > There is a danger of destroying PDSs that are being updated > by SPF and ISPF at the same time because SPF uses a different > Qname (SPFDSN) than ISPF. > > I suspect this is ancient and irrelevant. Otherwise, it's > insufficient: not "same system", but "any systems sharing the > volume". > > I still, wonder is Mr. Rosenberg's concern hypothetical, or has he > (or anyone) suffered an impact? > > Gerhard Postpischil's concern is fatuous. As long as all users of > a given resource use the same ENQ format it suffices. The slight > risk that a programmer might reflexively transpose the formats > of SYSIEWLP and SYSDSN is outweighed by the certain catastrophe > that would result from changing the format at this time. > > -- 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 > CONFIDENTIALITY/EMAIL NOTICE: The material in this transmission contains confidential and privileged information intended only for the addressee. If you are not the intended recipient, please be advised that you have received this material in error and that any forwarding, copying, printing, distribution, use or disclosure of the material is strictly prohibited. If you have received this material in error, please (i) do not read it, (ii) reply to the sender that you received the message in error, and (iii) erase or destroy the material. Emails are not secure and can be intercepted, amended, lost or destroyed, or contain viruses. You are deemed to have accepted these risks if you communicate with us by email. Thank you. ---------------------------------------------------------------------- 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
