Good point, but it is the opposite of what you are saying. The catalog should be defined to VLF via COFVLFxx in both systems.
If the catalog is not defined to VLF, it will be in ISC. With ISC, if a change is made from one system, the entire cache will be purged on the other. So if both systems are updating this catalog, all the cache will keep getting purged. With VLF, the changes will be communicated and only those changes will get purged from the CDSC (Catalog Data Space Cache). Mark -- Mark Zelden Sr. Software and Systems Architect - z/OS Team Lead Zurich North America / Farmers Insurance Group - ZFUS G-ITO mailto:[email protected] z/OS Systems Programming expert at http://expertanswercenter.techtarget.com/ Mark's MVS Utilities: http://home.flash.net/~mzelden/mvsutil.html On Fri, 22 Jan 2010 14:02:10 -0800, Guy Gardoit <[email protected]> wrote: >One more point - keep the catalog(s) out of your COFVLFxx parmlib members! > >On Fri, Jan 22, 2010 at 8:43 AM, Glen Gasior <[email protected]>wrote: > >> * >> I have a requirement to share a production USER CATALOG with a test (not >> development) lpar. Both lpars are MONOPLEX. >> * >> There is no GRS and will not be. No aliases on the test lpar will be >> assigned to >> this production lpar USER CATALOG. >> * >> I want to be certain serialization of the catalog takes place. I assume >> this will >> be via reserves. I want to be certain serialization is taking place between >> the >> two lpars on the USER CATALOG. >> * >> Please tell me of what must be in place for this to occur, especially any >> gotchas that would bypass serialization. >> * >> No new program products will be purchased. >> * >> >> ---------------------------------------------------------------------- >> 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 >> > > > >-- >Guy Gardoit >z/OS Systems Programming > >---------------------------------------------------------------------- >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 ---------------------------------------------------------------------- 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
