Jake: When a CP fails, generally there is a Machine Check interrupt that takes place.
The O/S gets this (we will assume z/OS in this case) and determines if it can recover from this. So Machine Check Interrupt gets processed, that generally causes ACR to be triggered (Alternate CPU Recovery). Now, if the task being dispatched at the time is a user task, it is probably going to get ABENDed. System tasks may or may not get recovered and redriven, it depends on the type of Machine Check -- We are talking Processor Damage not I/O types. So your system will pick up and carry on in degrade mode or pick up the new CPU depending. And then it will get back to dispatching tasks as it can. Regards, Steve Thompson --- justmainfra...@gmail.com wrote: From: Jake Anderson <justmainfra...@gmail.com> To: IBM-MAIN@LISTSERV.UA.EDU Subject: [IBM-MAIN] Dummy query on processor failover Date: Sun, 16 Dec 2018 10:40:31 +0400 Hi If there is a two general CP and for some reason if one of the CP undergoes a hardware failure. Does the next unit of work workload automatically start using the next available CP ? This is just a general question as our management wanted to know if the workload gets loaded to any available CP or it fails ? Jake ---------------------------------------------------------------------- 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
