Correcting ALTER syntax. -----Original Message----- From: Jesse 1 Robinson Sent: Thursday, September 29, 2016 1:59 PM To: 'IBM Mainframe Discussion List' <IBM-MAIN@LISTSERV.UA.EDU> Subject: Re: VSAM CA reclaim for RMM
Thanks. Spent some time this morning wading through the doc. Here's a thumbnail version of my understanding. -- CA reclaim must be 'turned on' at the system level in PARMLIB IGDSMSxx. Default value is 'off'. -- It can also be turned on or off for a system with a SETSMS command. -- Once turned on globally, CA reclaim will be in effect for (more or less) every VSAM cluster unless a cluster is specifically turned off. That is, the default at the cluster level is on. My RMM control data set is 'on' as shown by LISTCAT. -- You can turn a cluster off or back on with a simple ALTER command--which BTW I cannot find documented anywhere except in KC discussions of CA reclaim. For example, I cannot find any reference to reclaim in TSO HELP for ALTER. -- The IDCAMS command is "ALTER entry-name RECLAIMCA/NORECLAIMCA". That command is accepted now when I enter it even though we do not have reclaim turned on globally. So if you turned reclaim on for 'some user catalogs' and for SMS control data sets, did you take any action to turn it off for everything else in the house? . . J.O.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 323-715-0595 Mobile 626-302-7535 Office robin...@sce.com -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Mike Schwab Sent: Thursday, September 29, 2016 12:57 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: (External):Re: VSAM CA reclaim for RMM We had some user catalogs needing annual reorgs. Control Area Reclaim eliminated this. Helped with SMS control data sets and ML1 Small Data Set. Don't know about user datasets. On Thu, Sep 29, 2016 at 11:08 AM, Jesse 1 Robinson <jesse1.robin...@sce.com> wrote: > (In honor of today's post from Mike Wood.) We don't make much (if any) use of > CA reclaim here. It occurs to me that RMM might be an excellent candidate. We > periodically have to reorg the data base-sometimes when RMM crashes in the > middle of the day. > > When CA reclaim was first presented at a closed SHARE session on a Sunday > morning, there was great interest in the room but also some skepticism. What > is the current consensus on CA reclaim? How extensively is it implemented > these days? Recommendations? > > . > . > J.O.Skip Robinson > Southern California Edison Company > Electric Dragon Team Paddler > SHARE MVS Program Co-Manager > 323-715-0595 Mobile > 626-302-7535 Office > robin...@sce.com<mailto:robin...@sce.com> ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
