> -----Original Message----- > From: IBM Mainframe Discussion List [mailto:ibm-m...@bama.ua.edu] On > Behalf Of R.S. > Sent: Monday, August 10, 2009 4:53 AM > To: IBM-MAIN@bama.ua.edu > Subject: Re: DASD: to share or not to share > > Gibney, Dave pisze: > > VSAM (and all SMS datasets) can't exist without being cataloged. > > Well... To be accurate: they cannot be *used* without being cataloged. > But they can exist. > > > > Shared > > Catalogs are not "safe" without integrity protection. > > Huh? AFAIK It is safe and fully supported to share an UCAT without GRS > or MIM. That means RESERVEs and can hurt performance, but it is > possible > to safely and effectively share low-used UCAT. BTDT.
OK, I'll take yours and Mark's word for it. I'm sure I remember a problem with shared Catalogs sometime in the past. This memory could be a figment. I can have any volume online to any LPAR, IF I NEED TO, but in general, I isolate most application data volumes (SMS pools) to the correct LPAR. > > So, it is possible to share volumes, including SMS managed volumes and > VSAM files. Application files. > I would be very careful when talking about sharing system datasets and > volumes because the system is the most breaking rules user of the > datasets. > Last but not least: sharing datasets doesn't mean that many > applications > can update them concurrently. It can or (more likely) cannot be don > even > within single MVS image. > > > -- > Radoslaw Skorupka > Lodz, Poland > > > -- > BRE Bank SA > ul. Senatorska 18 > 00-950 Warszawa > www.brebank.pl > > Sd Rejonowy dla m. st. Warszawy > XII Wydzia Gospodarczy Krajowego Rejestru Sdowego, > nr rejestru przedsibiorców KRS 0000025237 > NIP: 526-021-50-88 > Wedug stanu na dzie 01.01.2009 r. kapita zakadowy BRE Banku SA (w > caoci wpacony) wynosi 118.763.528 zotych. W zwizku z realizacj > warunkowego podwyszenia kapitau zakadowego, na podstawie uchway XXI > WZ z dnia 16 marca 2008r., oraz uchway XVI NWZ z dnia 27 padziernika > 2008r., moe ulec podwyszeniu do kwoty 123.763.528 z. Akcje w > podwyszonym kapitale zakadowym BRE Banku SA bd w caoci opacone. > > ---------------------------------------------------------------------- > 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 ---------------------------------------------------------------------- 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
