If you want to automate detecting how and when this happens - across your estate - the following blog post of mine (from May) might be of interest:
https://www.ibm.com/developerworks/community/blogs/MartinPacker/entry/once_upon_a_restart?lang=en Then again, it might not. :-) Cheers, Martin Martin Packer, zChampion, Principal Systems Investigator, Worldwide Banking Center of Excellence, IBM +44-7802-245-584 email: [email protected] Twitter / Facebook IDs: MartinPacker Blog: https://www.ibm.com/developerworks/mydeveloperworks/blogs/MartinPacker From: Elardus Engelbrecht <[email protected]> To: [email protected] Date: 05/12/2014 09:43 Subject: Re: LPAR IPL order within a Sysplex Sent by: IBM Mainframe Discussion List <[email protected]> Peter Ten Eyck wrote: >What things are built in a Sysplex by the first LPAR brought up in the Sysplex that would impact subsequent LPARs brought up in the Sysplex? >Some possible examples... WLM, GRS, SMS etc. They don't care much about sequence, but see J.O.Skip Robinson reply. As per that redbook you mentioned, XCF is hypersensitive about the IPL order. RACF too is also hypersensitive, but if all and every LPAR is using the same DB and XCF, there should be no problem with the IPL sequence as long you have done your homework properly. Generally here at my work we have customer requirements to take in account, but generally we IPL during weekends like this: Network LPARs - first or last. It depends. Database system LPARs - any sequence. But LPARs using WebSphere are generally done last because they are talking with Database systems. Custom written things inside WebSphere 'break' if you bring down Database systems. IPL is then required anyways. Then inside each LPAR, some STCs are started in a specific order spaced out in seconds or minutes (wallclock time) depending on the speed of startup. So, as Allan Staller said, it depends on installation choice and of course YMMV. Groete / Greetings Elardus Engelbrecht ---------------------------------------------------------------------- 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
