Tag Archives: Oracle

OTech Magazine – Winter 2014

OTech Magazine winter 2014The winter edition of OTech Magazine, the independent magazine for Oracle professionals, is available. In OTech Magazine – Winter 2014 subjects include:

  • Time Series Forecasting in SQL
  • Flashback – Empowering Power Users
  • Starting WebLogic
  • DevOps and Continuous Delivery for Oracle
  • The Rapid Reaction Force – real time business monitoring

Download OTech Magazine Winter 2014 here.

OTech Magazine – Summer 2014

OTech magazineThe fourth issue of OTech Magazine, the independent magazine for Oracle professionals, is available. For the summer 2014 issue there are some more personal articles included. Titles vary from The Spiritual Programmer to The Next Generation: Oracle SOA Suite 12c and back via How to protect your sensitive data using Oracle Data Vault.

Download OTech Magazine – Summer 2014 here.

VirtualBox VERR_VMX_MSR_LOCKED_OR_DISABLED solved

VirtualBox Manager VERR_VMX_MSR_LOCKED_OR_DISABLEDWhile creating a Ubuntu 12.10 machine VirtualBox I ran into an error – VirtualBox VERR_VMX_MSR_LOCKED_OR_DISABLED – on my company issued HP ProBook. This halts the startup process of the virtual machine. You won’t be able to use it.

Here is the complete log and a screenshot:


Failed to open a session for the virtual machine Ubuntu 12.10.

VT-x features locked or unavailable in MSR. (VERR_VMX_MSR_LOCKED_OR_DISABLED).

Result Code: E_FAIL (0x80004005)
Component: Console
Interface: IConsole {db7ab4ca-2a3f-4183-9243-c1208da92392}

I remembered that there were issue were issues with HP bios from the VirtualBox FAQ using ENABLE VT-X/AMD-V:

some HP BIOSES have a glitch, When You ENABLE VT-X/AMD-V, You DISABLE it, so do try both ways.

VirtualBox Enable VT-x AMD-VSo the first solution I tried was to uncheck the box to ENABLE VT-X/AMD-V. That solved my problem. Now VirtualBox was able to start my Ubuntu machine. Check the screenshot how to disable (or enable the) VT-X/AMD-V setting.

Yep, I know this is against the advice I gave to improve VirtualBox performance. However I need it on this hardware to get my machines running…

Where do the JDeveloper extensions go?

Where does the downloaded stuff go after you installed JDeveloper extensions, like SOA Composite Editor, Oracle BPM Studio, or AIA Service Constructor?

On Windows you can find them here:
JDeveloper extensions location

C:\Users\_your_username_\AppData\Roaming\JDeveloper\tmp\update

Shouldn’t you be able to access the AppData directory, follow these instructions:

  • Go to the folder options, on Windows7 by clicking the Organize menu and the Folder and search options.
  • Choose the tab view.
  • Choose Show hidden files, folders and drives.

VirtualBox improve virtual machine performance

VirtualBox improve virtual machine performanceVirtual Machines are a great way to test stuff or use valuable tools in a separate environment. Think of test driving an OS, like Ubuntu 12.04 or Windows 8. Other examples include using pre-build appliances to use Oracle SOA Suite and BPM or WebLogic Server and Java tools.

Improve VirtualBox appliance performance

These Virtual Machines can be quite demanding for resources on your PC or laptop. Fortunately there are ways to speed up VirtualBox appliances. Besides increasing the allocated CPU power and RAM there are a few less expected things you can do:

  • Create fixed size disks – A preallocated disk will have less fragmentation. Adding of files to the virtual disk will be faster (spaces is already reserved). The downside is that a fixed-size disk uses more space on your hard disk.
  • Exclude the Virtual Machine directory from the virus scanner – Scanning there from the host isn’t very useful either. So add this directory to the exclusion list.
  • Put the VirtualBox files on non-system disk – Put the VirtualBox files on a non-system disk. The virtual disk and your hosts’s OS won’t be competing to read from or write to these same disk.
  • Make shure the Intel VT-x and AMD-V setting is ON – These are processor extensions that improve virtualization performance.

EM Cloud Administration Guide released

Oracle EM 12cOracle released the Oracle Enterprise Manager Cloud Administration Guide 12c Release 1 (12.1.0.1) documentation. It is part of the Enterprise Manager Cloud Control Documentation.

Enterprise Manager Cloud Control is system management software that delivers centralized monitoring, administration, and life-cycle management functionality for the complete IT infrastructure, including systems running Oracle and non-Oracle technologies.

Oracle releases NoSQL Database, Enterprise Edition 1.1.100

While the NoSQL Database Community Edition still waits for final license approval, Oracle has released it’s NoSQL Database, Enterprise Edition 1.1.100. The download is available on OTN.

The Oracle NoSQL Database is a distributed key-value database. It is designed to provide highly reliable, scalable and available data storage across a configurable set of systems that function as storage nodes.

The documentation page is still rather empty. However Technical Overview and a Data Sheet are already available.

Oracle NoSQL is a key offering in Oracle’s portfolio of Big Data products. The product is based on the Java version of Berkeley DB, an open source database used in embedded systems.

Update

Whitehorses publishes Oracle Forms Survey results

WhitehorsesWhitehorses published the results of their Oracle Forms Survey on their blog. I’ll share three remarkable results. Please read the whole post on their blog:

  • Over 30% is still running Client – Server (Forms 4.5 or 6i).
  • Over 50% doesn’t consider upgrading their unsupported version.
  • When replacing Oracle Forms APEX is the most considered alternative.

The results are mostly in line with the findings in Germany (on which the survey was based).

VirtualBox Solved VBOX_E_FILE_ERROR 0x80BB0004

Recently I wanted to share a VirtualBox Appliance with a colleague. So I tried to export the created appliance. Unfortunate this failed with a:

VBoxManage.exe: error: Code VBOX_E_FILE_ERROR (0x80BB0004) – File not accessible or erroneous file contents (extended info not available)

So I thought why not just copy it… Oh wait, first compact it to save some space and time using VBoxManage modifyvdi some.vdi compact:

>VBoxManage modifyvdi Windows7.vdi compact
0%...10%...20%...30%...40%...50%...60%...70%...80%...
Progress state: VBOX_E_FILE_ERROR
VBoxManage.exe: error: Code VBOX_E_FILE_ERROR (0x80BB0004) - File not accessible or erroneous file contents (extended info not available)

When I tried to copy or zip the file there were errors accessing it. Somehow the VirtualBox Appliance was still running fine. The files that make up the appliance weren’t locked.

Use CHKDSK

My laptop (the host of the appliance) is is running Windows7 and I decide to run chkdsk and found:

CHKDSK controleert de bestandsgegevens (stap 4 van 5)...
Leesfout met status 0xc0000185 op offset 0x17410c9000 voor 0x10000 bytes.
Leesfout met status 0xc0000185 op offset 0x17410d6000 voor 0x1000 bytes.
Er zijn beschadigde clusters in bestand 37907 met naam \Users\ppvdbeek\VIRTUA~2\Windows7\Windows7.vdi vervangen.

This is Dutch stating that there were bad sectors in the vdi file that had to be corrected. After that, I could run the appliance, compact the disk and export the appliance successful.

On Linux you could use fsck (for “file system check”) in a similar case.

ESB: No WebService Provider is registered at this URL

When you are using Oracle ESB 10g and encounter the message No WebService Provider is registered at this URL when testing a web service from the ESB Console try the following:

Oracle Enterprise Manager OC4J_SOA

EM OC4J_SOA

Verify the ESB web service providers are generated correctly in ESB runtime (known as the esb-rt):

  • Login into Enterprise Manager
  • Go to the Application Server Control
  • Click OC4J_SOA oc4j instance
  • Click Web Services tab
  • Verify the deployed web services are listed here, and test that services.

In case there are no web service from the ESB runtime (esb-rt) the service providers were not generated correctly, restart ESB-RT:

  • Click OC4J_SOA oc4j instance
  • Click the Applications tab
  • Expand Middleware Services, ESB and esb-dt
  • Check the esb-rt and click the restart button

Now check the j2ee/_instance_name_/log/*/oc4j/log.xml to see if the ESB application has started correctly. Verify that ESB-RT application is initialized correctly by searching for ‘ESB bootstrap: Runtime initialized‘ message in the log file. If you also restarted the ESB-DT, verify that ESB DT application is initialized correctly by searching for ‘ESB bootstrap: Repository initialized‘ message in the log file. And finally check that the ESB web service providers were generated correct (see above).