Apologies, this hung up in my outbox for 2 weeks without me noticing. Hope some of you can make it.
-----Original Message----- From: Damian Gallagher Sent: 14 March 2012 09:59 To: linux-390@vm.marist.edu Subject: RE: Oracle in virtual environments " I do a webcast quarterly or so around Oracle on zSeries, next one is March 15th" Sorry, 14th :-) http://www.zseriesoraclesig.org/webcasts.php for joining information - that takes you to the My Oracle Support official link - do take time to explore the SIG site, though. Note that the SIG is a completely independent organisation from Oracle, I'm just plugging a useful organisation. It's a joint 'cast with Dave Simpson of IBM, and it ties in neatly with Share, where there are also joint presentations (but not the same ones :-)) the next day. If anyone can't get on via their MoS subscription, or via their DBA group/ Mos Admin (who should have had a direct notification via our email ), let me know privately and I'll see what I can do, but since it's a MoS webcast, I'm not sure what I can do. Cheers Damian -----Original Message----- From: Damian Gallagher [mailto:damian.gallag...@oracle.com] Sent: 22 February 2012 16:13 To: 'linux-390@vm.marist.edu' Subject: RE: Oracle in virtual environments Thanks Mike and Malcolm for the assist. I am from Oracle, and I can quite categorically state that as far as zSeries and z/VM is concerned, that statement is utter rubbish :-) Our certification site and the compatibility matrices fully and officially declare that it's all good. Here's the RAC one, for example: http://www.oracle.com/technetwork/database/clustering/tech-generic-linux-new-086754.html So: Paragraph 1: "In a discussion with our Oracle group.." Untrue Paragraph 2: " Even more so, Oracle 'must' be installed with HA" Untrue (but Oracle Restart is recommended) Paragraph 3: " Can anyone confirm this statement" In the negative :-) I do a webcast quarterly or so around Oracle on zSeries, next one is March 15th, see http://zseriesoraclesig.org/ for joining details (when it gets updated), if you are a My Oracle Support user there'll be an email out. I'll put a direct link out on this list in this topic next week. We're presenting at Share March 14th on this topic, and at Collaborate12 in Las Vegas in April (meeeeee, heee hee !!) so by all means join us at any of these events. I can also be found at the UK GSE conference in the Autumn (fall), and at the UK Zlinux User Group (ZLUG) meetings. I'm more than happy to be collared and put to the Question :-) I'm quite happy to have a call with you and/or your DBA team, mail me offline to discuss. This applies to anyone who's having this kind of misunderstanding, of course :-) Cheers Damian (who has a whole worldwide team supporting Oracle on z/VM on zSeries :-) ) -----Original Message----- From: van Sleeuwen, Berry [mailto:berry.vansleeu...@atos.net] Sent: 22 February 2012 09:02 To: LINUX-390@vm.marist.edu Subject: Oracle in virtual environments Hi All, In a discussion with our Oracle group they claim that there is no support for Oracle in virtual systems and that they therefore will not support on virtual systems too. So when a (performance) problem is found they first advise to migrate to a dedicated server, and increase resources, before they attempt to solve the problem. This is not (only) true for z but also for other virtual systems as well, we discovered this because of the advice to migrate off of cloud systems. So basically any 'cloud' service is not advised to run Oracle. Even more so, Oracle 'must' be installed with HA , the server 'must' have 4G to install in the first place and even more to run the database. Obviously plenty of caching must be available on all levels (FS cache, SGA/PGA, shared segments etc) to 'improve' performance. Needless to say that this makes server 'virtual unfriendly' to say the least, impossible to run virtualized would be a better description. Can anyone confirm this statement? Is it Oracle or is it the interpretation or our Oracle group? Is there a formal statement from Oracle itself? (And Yes, we do run Oracle systems. And we do measure the best performance in systems that are as small as possible, ie don't run according to Oracle recommendations. So from our point of view the statement is not true but that doesn't help if there is no support on whatever level.) 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