Re: System Boost Question
Not in any meaningful sense, no, it isn’t possible. There are two varieties of System Recovery Boost: longer boosts, that happen during IPL and shutdown, and short boosts that happen in response to certain sysplex events. It's not something you can trigger whenever you want to. --- Kevin McKenzie External Phone: 845-435-8282, Tie-line: 8-295-8282 z/OS Test Services - Test Architect, Provisioning z/OS Hardware/Software Interlock There’s a White Paper that goes into much detail here: https://ibm.biz/z15SRBWhitePaper. IBM Mainframe Discussion List wrote on 11/28/2020 02:01:40 PM: > From: Gadi Ben-Avi > To: IBM-MAIN@LISTSERV.UA.EDU > Date: 11/28/2020 02:02 PM > Subject: [EXTERNAL] System Boost Question > Sent by: IBM Mainframe Discussion List > > We are to take delivery of a z15-t02. > I have a question about system boost. > A few months ago, as part of upgrading CICS, we shut down all of our > CICS regions in order to upgrade the CICS SVC. > > We are running z/OS v2.3 > > Could we use SYSTEM boost to make the process of shutting down the > CICS region and restarting them? > Would it be 'legal'? > > Thanks > > Gadi > > -- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: System Boost Question
We also restart CICS every night (at least some regions). But that happens in the middle of the night (at 3 am, I think). This was a special case where I wanted to finish as soon as possible. Gadi -Original Message- From: IBM Mainframe Discussion List On Behalf Of Martin Packer Sent: Sunday, November 29, 2020 5:19 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: System Boost Question I would also point out quite a few customers restart CICS on a daily (sometimes weekly) basis. They IPL much less frequently (likewise structure recovery etc). I should imagine therefore there would have to be a lot of thinking around terms and conditions for something such as restarting CICS. At any rate, that's not what SRB supports. Cheers, Martin Martin Packer Systems Investigator & Performance Troubleshooter, IBM +44-7802-245-584 email: martin_pac...@uk.ibm.com Twitter / Facebook IDs: MartinPacker Blog: https://mainframeperformancetopics.com Mainframe, Performance, Topics Podcast Series (With Marna Walle): https://anchor.fm/marna-walle Youtube channel: https://www.youtube.com/channel/UCu_65HaYgksbF6Q8SQ4oOvA From: Peter Relson To: IBM-MAIN@LISTSERV.UA.EDU Date: 29/11/2020 13:11 Subject:[EXTERNAL] Re: System Boost Question Sent by:IBM Mainframe Discussion List Could we use SYSTEM boost to make the process of shutting down the CICS region and restarting them? That would not be an appropriate use of the shutdown boost. Shutdown boost is for shutting down the entire system. Note that IBM also has a separate feature called "System Recovery Boost Upgrade" which is unrelated to "System Recovery Boost" ... it is more like CUoD. That is a paid feature and gives a 6 hour boost in processing speed. "Gives a 6 hour boost in processing speed" is not a good characterization of System Recovery Boost Upgrade. It does not do so. Each activation (and the upgrade covers multiple) gives you a 6 hour window during which additional processors can be applied to each LPAR when that LPAR is starting up or shutting down. It is during the startup and the shutdown that the additional processors can participate. Peter Relson z/OS Core Technology Design -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: System Boost Question
Yes, You can update the CICS SVC without an IPL. There is a program supplied with CICS to do it. Look for DFHCSVCJ in the CICS samplib. Gadi -Original Message- From: IBM Mainframe Discussion List On Behalf Of Clark Morris Sent: Sunday, November 29, 2020 7:36 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: System Boost Question [Default] On 28 Nov 2020 11:02:02 -0800, in bit.listserv.ibm-main gad...@malam.com (Gadi Ben-Avi) wrote: >We are to take delivery of a z15-t02. >I have a question about system boost. >A few months ago, as part of upgrading CICS, we shut down all of our CICS >regions in order to upgrade the CICS SVC. > >We are running z/OS v2.3 > >Could we use SYSTEM boost to make the process of shutting down the CICS region >and restarting them? >Would it be 'legal'? > Can you upgrade the CICS SVC without an IPL? Clark Morris >Thanks > >Gadi > >-- >For IBM-MAIN subscribe / signoff / archive access instructions, send >email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: System Boost Question
[Default] On 28 Nov 2020 11:02:02 -0800, in bit.listserv.ibm-main gad...@malam.com (Gadi Ben-Avi) wrote: >We are to take delivery of a z15-t02. >I have a question about system boost. >A few months ago, as part of upgrading CICS, we shut down all of our CICS >regions in order to upgrade the CICS SVC. > >We are running z/OS v2.3 > >Could we use SYSTEM boost to make the process of shutting down the CICS region >and restarting them? >Would it be 'legal'? > Can you upgrade the CICS SVC without an IPL? Clark Morris >Thanks > >Gadi > >-- >For IBM-MAIN subscribe / signoff / archive access instructions, >send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: System Boost Question
I would also point out quite a few customers restart CICS on a daily (sometimes weekly) basis. They IPL much less frequently (likewise structure recovery etc). I should imagine therefore there would have to be a lot of thinking around terms and conditions for something such as restarting CICS. At any rate, that's not what SRB supports. Cheers, Martin Martin Packer Systems Investigator & Performance Troubleshooter, IBM +44-7802-245-584 email: martin_pac...@uk.ibm.com Twitter / Facebook IDs: MartinPacker Blog: https://mainframeperformancetopics.com Mainframe, Performance, Topics Podcast Series (With Marna Walle): https://anchor.fm/marna-walle Youtube channel: https://www.youtube.com/channel/UCu_65HaYgksbF6Q8SQ4oOvA From: Peter Relson To: IBM-MAIN@LISTSERV.UA.EDU Date: 29/11/2020 13:11 Subject:[EXTERNAL] Re: System Boost Question Sent by:IBM Mainframe Discussion List Could we use SYSTEM boost to make the process of shutting down the CICS region and restarting them? That would not be an appropriate use of the shutdown boost. Shutdown boost is for shutting down the entire system. Note that IBM also has a separate feature called "System Recovery Boost Upgrade" which is unrelated to "System Recovery Boost" ... it is more like CUoD. That is a paid feature and gives a 6 hour boost in processing speed. "Gives a 6 hour boost in processing speed" is not a good characterization of System Recovery Boost Upgrade. It does not do so. Each activation (and the upgrade covers multiple) gives you a 6 hour window during which additional processors can be applied to each LPAR when that LPAR is starting up or shutting down. It is during the startup and the shutdown that the additional processors can participate. Peter Relson z/OS Core Technology Design -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: System Boost Question
Could we use SYSTEM boost to make the process of shutting down the CICS region and restarting them? That would not be an appropriate use of the shutdown boost. Shutdown boost is for shutting down the entire system. Note that IBM also has a separate feature called "System Recovery Boost Upgrade" which is unrelated to "System Recovery Boost" ... it is more like CUoD. That is a paid feature and gives a 6 hour boost in processing speed. "Gives a 6 hour boost in processing speed" is not a good characterization of System Recovery Boost Upgrade. It does not do so. Each activation (and the upgrade covers multiple) gives you a 6 hour window during which additional processors can be applied to each LPAR when that LPAR is starting up or shutting down. It is during the startup and the shutdown that the additional processors can participate. Peter Relson z/OS Core Technology Design -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: System Boost Question
Great questionIBM's answer is that System Recovery Boost is for the whole system restart (IPL) and not for just a subsystem while the rest of the lpar keeps running normally. You activate the shutdown boost by starting IEASDBS (shut down boost start) and this causes WLM to stop scheduling work in that lpar along with other preparations for shutdown. You can stop shutdown boost before shutdown is complete but WLM will not resume scheduling work into that lpar. The expectation is that an IPL will be done to clear it. It would seem unsuitable for your use case of recycling CICS without IPL. Note that IBM also has a separate feature called "System Recovery Boost Upgrade" which is unrelated to "System Recovery Boost" ... it is more like CUoD. That is a paid feature and gives a 6 hour boost in processing speed. That might be suitable for your use case -- check with IBM -- but the cost will be high. On Sun, Nov 29, 2020 at 6:02 AM Gadi Ben-Avi wrote: > We are to take delivery of a z15-t02. > I have a question about system boost. > A few months ago, as part of upgrading CICS, we shut down all of our CICS > regions in order to upgrade the CICS SVC. > > We are running z/OS v2.3 > > Could we use SYSTEM boost to make the process of shutting down the CICS > region and restarting them? > Would it be 'legal'? > > Thanks > > Gadi > > -- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
System Boost Question
We are to take delivery of a z15-t02. I have a question about system boost. A few months ago, as part of upgrading CICS, we shut down all of our CICS regions in order to upgrade the CICS SVC. We are running z/OS v2.3 Could we use SYSTEM boost to make the process of shutting down the CICS region and restarting them? Would it be 'legal'? Thanks Gadi -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
