FWIW my code detects IPLs by Reader Start Time for Master Scheduler Address Space - from SMF 30. If anyone knows of a case where it restarts outside of an IPL I'd love to know about it.
More recently SMF 70-1 added a field for IPL. As for PORs I don't see that in SMF but get suspicious about why all the LPARs on a machine I have SMF for get re-IPLed at roughly the same time. :-) Socially, I'd say fortnightly or monthly are very common. Weekly is rare now, quarterly is a significant proportion. As is "as and when". Cheers, Martin Martin Packer WW z/OS Performance, Capacity and Architecture, IBM Technology Sales +44-7802-245-584 email: [email protected] 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: "Mike Schwab" <[email protected]> To: [email protected] Date: 14/09/2021 15:26 Subject: [EXTERNAL] Re: IPL's POR's frequency Sent by: "IBM Mainframe Discussion List" <[email protected]> IPL once a quarter. PORs when IBM requires. On Tue, Sep 14, 2021 at 7:30 AM Joe <[email protected]> wrote: > > Just curious about how often folks here IPL their systems as a scheduled event , once a month, once a quarter, once a year? > and same question for POR's. > I understand there are times when you HAVE to have unscheduled or hot fix IPL's, I'm just asking in general terms. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN -- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] 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 [email protected] with the message: INFO IBM-MAIN
