Re: Virtualbox images for EM 12c, DataGuard, RAC, GoldenGate / run multiple simultaneous OL5 images on Win7?

  • From: Hans Forbrich <fuzzy.graybeard@xxxxxxxxx>
  • To: oracle-l@xxxxxxxxxxxxx
  • Date: Thu, 14 Jun 2012 06:56:47 -0600

I do a hands-on seminar on Data Guard for which I start with the 
Developer Days VM, do a clone, and re-network the clone.  No additional 
software is required, as Data Guard is in theDB kernel.  EM12c could be 
interesting if you could fit it into a system under 4GB RAM - tight, 
though, and EM tends not to survive VM reboots.

RAC becomes a challenge in part because it needs multiple hosts and 
shared disk, and as of yet, Oracle does not have a template.  Search 
around, though, as there are plenty of step-by-steps that I've stumbled 
across to do that in VMWare, and I'm pretty sure that can be adopted.


I often run multiple VMs simultaneously - it all depends on the 
resources required by the VM and by the host.  If 2 VMs require 4GB RAM 
each, you might find it excruciatingly slow to run even on your 
machine.  (One of the reasons I just ordered the new MacBook Pro with 
16GB RAM)

Bare metal?  Do you mean, does it provide it's own Dom0?  Nope.  Like 
VMWare Workstation, VirtualBox requires a host operating system - Mac, 
Win or Linux.

As for performance hit, that kind-a depends on what else your host 
operating system is doing.  It really boils down to "How much memory 
does each VM need, and how much memory does your host OS have left to 
give?"  If you try to run a VM which having a video editing tool open at 
the same time, you will likely have challenges.  You need to answer this 
one yourself by looking at your habits and doing the math.

Many people will simply monitor the VirtualBox site to determine which 
VMs are built and find out when new ones are released.  There are other 
VMs there, that I find useful, but I'm not sure whether you will want 
them.   My experience is that Oracle builds the VMs for OOW or for 
specific demos, and then *eventually* releases them to 
http://www.oracle.com/technetwork/community/developer-vm/index.html

But you gotta get the VMs from an official Oracle site, since by license 
agreement, we can not re-distribute any Oracle product.  Makes it 
difficult for non-Oracle people to build a new VM and make it simply 
downloadable.  When you download the database, you explicitly agree that 
the copy is for your won use and you will not redistribute it.  
Providing step-by-step instructions, as you can get from 
http://otn.oracle.com and searching for Articles, is a possibility.

HTH

On 14/06/2012 4:11 AM, dnrg wrote:
> A friend pointed me to Virtualbox and an excellent "Developer Days" image 
> (includes Oracle 11gR2 running Oracle Linux 5) as a quick way to build a 
> sandbox for experimenting with features, options, etc.
>      http://www.oracle.com/technetwork/community/developer-vm/index.html
>
> I bought an HP Pavillion g6 quad core (AMD) laptop with of 8G RAM laptop 
> specifically for Oracle professional development. And the Developer Days 
> image looks great. But a few questions:
>
> Q1) Do any Virtualbox images exist for:
>      -- EM / Grid Control 12c (I'll settle for an EM / Grid Control 11g image)
>      -- Images I can practice RAC with (properly configured, would the 
> Developer Days image above do?)
>      -- DataGuard
>      -- GoldenGate
>
> Q2) Given the laptop specs above, should I be able to run at least two 
> simultaneous Virtualbox Oracle images atop Win7? The minimum I'd need for RAC.
>
> Q3) Can / does Virtualbox run in a "Bare Metal" mode? How much of a 
> performance hit am I looking at in running Virtualbox on Win7? I'd wipe the 
> laptop clean and install Linux; but after a failed attempt to cold-image my 
> new laptop using PING (Partimage Is Not Ghost) I'm not confident the laptop 
> can handle Linux. None of my hard drives were recognized while booting from 
> the PING CD.
>
> Q4) Are there any other useful Virtualbox images I should know about?
>
> Q5) Would OOW be the place where new Virtualbox images for education and 
> training be released? If so, could someone please post a link when and if 
> that occurs?     
>
> Q6) Is Virtualbox the best virtualization software for Oracle education and 
> self-training purposes? VMWare seems to be the virtualization software of 
> choice in my org. And would VMWare be the way to go if I want to build my own 
> images (again, for self-training? The sysadmins know VMWare--it's what 
> they're already comfortable with--so they're avoiding Oracle's VM software. 
> But it might be nice to get a learning "two fer" out of this if 1) VMWare is 
> the dominant virtualization software overall out in the market generally and 
> 2) There is a free version that would allow me to build Oracle images for 
> training purposes.
>
>
> Q7) Is it legal to produce, and has anyone released, various Oracle images 
> for self-education / training purposes that will run on VMWare Player?
>
>
> Thanks very much.
>
> Dana 
> --
> http://www.freelists.org/webpage/oracle-l
>
>
>

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http://www.freelists.org/webpage/oracle-l


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