I don't think you should take a few responses on the list as indicative of SOP one way or the other, but so that new folks don't get the impression that it's mandatory to do this quite so frequently, I'll pipe in and say we only IPL PROD lpars once (or maybe at most 3 or 4 times) a year.
I'm db2 maint guy, so I don't do IPLs myself, but we recently did a 1.6 upgrade, and as I heard it from the OS guys, these days the IPL process is pretty much an automated cinch that takes less than 5 minutes. I thought the strides in the console and so forth made IPL a lot easier/quicker/automated than in the past? For us, we don't IPL except for emergencies, OS or HW upgrades, and for DST fallback. The only one that always occurs is the DST one. The DST in the fall is so that any applications that may be logging on their own won't freak, and isn't really necessary for most system apps per se, but does provide window for non-critical maintenance. Emergency (but still planned) IPL issues are very very rare. I believe the last one have been in early December for us, and that may have been the only one all of last year. My DB2 prod subsystems pretty much follow the same course, but with the obvious caveat that they are more "breakable" than the OS so I do have to make a few more maintenance outages. But before the OS upgrade, the majority of the prod ssids hadn't been recycled since December either. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Gates, Guy Sent: Friday, June 24, 2005 9:20 AM To: [email protected] Subject: Re: IPL periodicity Hi Peter, We are converting from VSE to Z/OS and my management was asking the same question. Did you keep track of the numbers that you can share back to the list? It looked like a lot were IPL'ing Weekly, with a trend to move to fewer IPL's as Business Criticality Increased. Was that what you saw? <SNIP> ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
