It happens that certain CSA allocations are not really orphans; they're more like emancipated minors.
-----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Rob Schramm Sent: Wednesday, November 04, 2015 2:20 PM To: [email protected] Subject: Re: Releasing Orphan Storage without IPL One the best sysprogs I know attempted to free some storage SQA / CSA due to a creeping storage condition. There was a shory pause followed by some expletives and an immediate IPL of the system. I wouldn't attempt it on any system I cared about unless it was to attempt to avoid an impending IPL. Rob Schramm On Sat, Oct 31, 2015, 10:47 AM Martin Packer <[email protected]> wrote: > Right. And coming to this late... > > SMF 78-2 has all the numbers you'd usually need on this. My standard > reporting generates useful stuff on this - but generally I don't bore > my customers with it. If it's exciting, however, ... :-) > > Quite often I see SQA oversized leaving unusable 24- or 31-bit SQA. > (Also oversized CSA, but that's a different matter.) > > Cheers, Martin > > Martin Packer, > zChampion, Principal Systems Investigator, Worldwide Cloud & Systems > Performance, IBM > > +44-7802-245-584 > > email: [email protected] > > Twitter / Facebook IDs: MartinPacker > Blog: > https://www.ibm.com/developerworks/mydeveloperworks/blogs/MartinPacker > > > > From: Peter Relson <[email protected]> > To: [email protected] > Date: 31/10/2015 13:56 > Subject: Re: Releasing Orphan Storage without IPL > Sent by: IBM Mainframe Discussion List <[email protected]> > > > > >Remember that CSA and ECSA can overflow to SQA and ESQA, so you have > >more air in you (E)CSA than the 2% and 3% and this might help you > >survive until the next scheduled IPL. > > Actually, it's the other way around, as I think of it. > > CSA can be converted into SQA. If a request to obtain storage from SQA > cannot find it from the defined SQA, the system may convert CSA to > satisfy > > the request. > > It will not do the reverse. > > This is why some customers will underconfigure SQA and overconfigure CSA. > > Peter Relson > z/OS Core Technology Design > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send > email to [email protected] with the message: INFO IBM-MAIN > > > > > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send > email to [email protected] with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
