Great question....IBM'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 <[email protected]> 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 [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
