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Home -> Community -> Usenet -> c.d.o.server -> Re: Multiple 10g instances (standard edition) one machine / resource allocation
Shakespeare wrote:
> "DA Morgan" <damorgan_at_psoug.org> schreef in bericht > news:1189004915.590055_at_bubbleator.drizzle.com... >> Shakespeare wrote: >>> "jeremy" <jeremy0505_at_gmail.com> schreef in bericht >>> news:1188918123.470027.6110_at_57g2000hsv.googlegroups.com...
>>> Apart from all the licensing issues etc, I know by experience that some >>> Oracle products run on VMWare very well, but other DO have problems (at >>> least on VMWare Workstation, not sure about ESX) Oracle 10g Application >>> Server Infrastructure for example causes masses of Page Faults, and keeps >>> using 5 to 10% CPU while doing nothing (except page faults). It's a known >>> issue, but right: unsupported, so..... >>> >>> But under ESX we have seen different behaviour as well. Configs running >>> perfectly under 'real iron' started to show faulty behaviour when ported >>> to VM. (In this case, Win2003 server). >>> >>> So you may be replacing one problem with an other..... >>> >>> Shakespeare >> Lets take as one example Oracle RAC. Oracle uses a VMWare environment to >> teach their RAC classes. I find that horrifying as I don't think people >> learn real-world skills in unreal environments. But obviously RAC is >> stable running on VMWare. That does not mean it will scale and that does >> not mean it is easy to support when configured creatively which is the >> point of most VM environments. >> -- >> Daniel A. Morgan >> University of Washington >> damorgan_at_x.washington.edu (replace x with u to respond) >> Puget Sound Oracle Users Group >> www.psoug.org > > Teaching on VM is ok, you can't expect all students to buy multiple servers. > This does not mean one should use it as a production environment.... > > I'm glad you don't teach Life Saving ..... which is usally taught in unreal > environments (we can't kill em all, can we?) > > Shakespeare > (And I'm still glad you don't sell cars too ;-)))
I worked as a lifeguard for several years and taught lifesaving. We taught how to drag a person to shore by jumping into the water and dragging back a real person. Sometimes that person would pretend to be unconscious ... sometimes they would fight as if in a panic.
If this was taught using the same skill set used to teach software I imagine they'd just make you watch PowerPoint slides while someone threw buckets of water at you. <g>
-- Daniel A. Morgan University of Washington damorgan_at_x.washington.edu (replace x with u to respond) Puget Sound Oracle Users Group www.psoug.orgReceived on Wed Sep 05 2007 - 17:49:24 CDT
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