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Oracle VM Feed

Oracle VM for x86, Oracle VM Templates, Oracle VM Template Builder, Oracle Virtual Assembly Builder, Oracle JRocket Virtual Edition, Oracle VM Management Pack Plug-in and the Underground Oracle VM Manual resources, news, and support articles.

ASMLib

Oracle ASMlib on Linux has been a topic of discussion a number of times since it was released way back when in 2004. There is a lot of confusion around it and certainly a lot of misinformation out there for no good reason. Let me try to give a bit of history around Oracle ASMLib.

Oracle ASMLib was introduced at the time Oracle released Oracle Database 10g R1. 10gR1 introduced a very cool important new features called Oracle ASM (Automatic Storage Management). A very simplistic description would be that this is a very sophisticated volume manager for Oracle data.

What's up with OCFS2?

On Linux there are many filesystem choices and even from Oracle we provide a number of filesystems, all with their own advantages and use cases. Customers often confuse ACFS with OCFS or OCFS2 which then causes assumptions to be made such as one replacing the other etc...

My own personal use of Oracle Linux

It always is easier to explain something with examples... Many people still don't seem to understand some of the convenient things around using Oracle Linux and since I personally (surprise!) use it at home, let me give you an idea.

I have quite a few servers at home and I also have 2 hosted servers with a hosted provider. The servers at home I use mostly to play with random Linux related things, or with Oracle VM or just try out various new Oracle products to learn more. I like the technology, it's like a hobby really.

Oracle Linux 6 update 3

Oracle Linux 6.3 channels are now available online

  • http://public-yum.oracle.com repositories. Both base channels and latest channels are available (for free for everyone)
  • http://linux.oracle.com repositories. Behind our customer portal but effectively the same content.
  • Source RPMs (.srpm) are being uploaded to http://oss.oracle.com/ol6/SRPMS-updates.

    OL6.3 contains UEK2 kernel-uek-2.6.39-200.24.1.

    Oracle VM VNC Console Path to VNCViewer.exe

    Product Name and Version: 
    Oracle VM 3.1.1
    Problem Description: 
    On a Windows 7 workstation we access Oracle VM Manager and launch a virtual machine's VNC console. We are presented with a dialogue box to enter a valid path to “Path to local VNC Viewer”, we enter the path and the Windows 7 system launches the RealVNC Viewer as expected and and connects to 127.0.0.1: xxxxx port, which sits at “connecting” forever without establishing a connection. If we leave the valid path to “Path to local VNC Viewer” BLANK, it returned with the TightVNC console with a blank screen.
    Notes: 
    We have installed the TightVNC package on the Oracle VM Manager host and bounced ovmm. On the Windows 7 workstation accessing Oracle VM Manager we have installed RealVNC viewer.

    Oracle VM 3.1.1 build 365 released

    A few days ago we released a patch update for Oracle VM 3.1.1 (build 365).

    Oracle VM Manager 3.1.1 Build 365 is now available from My Oracle Support
    patch ID 14227416

    Oracle VM Server 3.1.1 errata updates are, as usual, released on ULN in the ovm3_3.1.1_x86_64_patch channel.

    Just a reminder, when we publish errata for Oracle VM, the notifications are sent through the oraclevm-errata maillist.

    Oracle VM RAC template - what it took

    In my previous posting I introduced the latest Oracle Real Application Cluster / Oracle VM template. I mentioned how easy it is to deploy a complete Oracle RAC cluster with Oracle VM. In fact, you don't need any prior knowledge at all to get a complete production-ready setup going.

    Here is an example... I built a 4 node RAC cluster, completely configured in just over 40 minutes - starting from import template into Oracle VM, create VMs to fully up and running Oracle RAC. And what was needed?

    New Oracles VM RAC template with support for oracle vm 3 built-in

    The RAC team did it again (thanks Saar!) - another awesome set of Oracle VM templates published and uploaded to My Oracle Support.

    You can find the main page here.

    What's special about the latest version of DeployCluster is that it integrates tightly with Oracle VM 3 manager. It basically is an Oracle VM frontend that helps start VMs, pass arguments down automatically and there is absolutely no need to log into the Oracle VM servers or the guests.

    example of transcendent memory and oracle databases

    I did some tests with tmem using an Oracle Database 11gR2 and swingbench setup. You can see a graph below. Let me try to explain what this means.

    Using Oracle VM 3 with some changes booting dom0 (additional parameters at the boot prompt) and with UEK2 as a guest kernel in my VM, I can make use of autoballooning. What you see in the graph below is very simple : it's a timeline (horizontal)of how much actual memory the VM is using/needing. I created 3 16GB VMs that I wanted to run on a 36GB Oracle VM server (so more VM memory than we have physically available in the server).

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