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• links for 2011-03-01

  - by Bob Rhubart

  Oracle Technology Network Architect Day: Denver - March 23 This live one-day event will bring together architects from a broad range of disciplines and domains to share insights and expertise in the use of Oracle technologies to meet the challenges today’s architects regularly face. (tags: oracle otn architect entarch) Java.net Reborn (Oracle Technology Network Blog (aka TechBlog)) "The migration was huge effort. Over 1400 projects were migrated (and some 30 projects are left to go). A large part of the migration was a big cleanup of abandoned projects...The new java.net site is smaller, faster and now the percentage of good, current content is much higher." (tags: oracle otn java java.net) This Week: OTN Java Developer Day in Boston, Massachusetts (US) | Java.net "This Thursday, March 3, the Oracle Technology Network will be hosting an OTN Developer Day titled You are the future of Java in Boston, Massachusetts (US). The all-day event includes a keynote address ("Java, the Language of the Future") and four separate tracks..." (tags: oracle otn java event) A brief introduction to BRM and architecture (Red Adventure) Yani Miguel offers a primer on the architecture behind Billing and Revenue Management. (tags: oracle otn brm) SOA Suite Integration: Part 1: Building a Web Service (The Shorten Spot) Anthony Shorten's first post in a new series "will not feature SOA Suite at all, but will concentrate on the capability for the Oracle Utilities Application Framework to create Web Services you can use for integration." (tags: oracle otn SOA soasuite) Darwin-IT: VirtualBox on Windows XP Martien van den Akker shares a few tips. (tags: oracle otn virtualization virtualbox) Pas Apicella: Developing RESTful Web Services from JDeveloper 11g (11.1.1.4) Plas says: "In this example we use JDeveloper to create a basic JAX-RS Web Service from support provided within the code editor as no wizard support exists within JDeveloper 11g at this stage." (tags: oracle otn REST SOA) Alexander Buckley: Maintenance Review of the Java VM Specification The Java Virtual Machine Specification is the authoritative reference for the design of the Java virtual machine that underpins the Java SE platform. In an implementation-independent manner, the Specification describes the architecture, linking model, and instruction set of the Java virtual machine, (tags: oracle otn java virtualization jvm javase)

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• Drupal 7 Advice Needed: "Portal" Creation

  - by WernerCD

  Question: What is the best game plan for building what I want. I'm rebuilding the company intranet and am trying to get our "Portals" system re-created in Drupal. I'm trying to learn Panels, because thats what I think would do this, but I just can't seem to get it working. Menu at top, drop down lists for various webpages, tools, internal applications... and Department Portals. When you click on a department portal, you get the same menu at top... and on the main part of the page you have a menu on the left, with content on the right. Menu stays on the left, content loads next to it. Each Portal has its own menu and content (least of which is "Home"). Ultimately, I'd like to be able to say - users with role "Foo" can add/edit/delete Portal Bar. - Each Portal starts with a "Home" - Each Portal has its own Menu tree's. (Picture 2 above has a < ul for video tutorials that would be a second level menu. So more than one deep.) - Content on the right side of the portal should be flexible (Video, PDF via fileviewer, etc) - Portal Bar should have its own Folder to contain it's content. I'm trying to do this in Panels, but I can't seem to put the pieces together in my mind and in practice. I hope I'm making sense, because the dizzying array of stuff is killing me lol.

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• Dev Lead Job opening on my team

  My product unit (Parallel Developer Tools) is hiring a developer lead here in Redmond. This position is specifically on the debugger feature team that I "Program Manage".So, if you have what it takes and don't mind working with me every single day, click on the link below to read more and apply. You can also send me your resume and I'll make sure it gets to the right place and that you get a prompt response.There is a very long job description on the Microsoft careers site under job id 707388.Here is an excerpt from the middle (emphasis mine):"...We are in search of a talented and innovative senior lead software design engineer to own development of the debugging tools for data parallelism (including GP-GPU) and HPC Clusters being built by our team.To be successful, you need to be able to guide careers, design and architect well, communicate and share the best development practices, collaborate with your peers, contribute to the vision, and code significant portions of the solution. We want to hear from you if you're passionate about making your mark in the parallel development space, improving people, and building world-class tools."Responsibilities include:Managing a team of senior and junior developersDesign and coding high-quality software..."For the full background story, requirements, qualifications and responsibilities please visit the official page. Comments about this post welcome at the original blog.

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• Oracle Advanced Benefits: Plan Design Maintenance for Open Enrollment

  - by Annemarie Provisero

  ADVISOR WEBCAST: Oracle Advanced Benefits: Plan Design Maintenance for Open Enrollment PRODUCT FAMILY: Oracle HCM - Benefits  July 13, 2011 at 1 pm PT, 2 pm MT, 4 pm ET This session AU gives you the information to define new and maintain all Compensation Objects used in your Benefits setup. Course highlights things to consider when getting ready for Open Enrollment or when there is a need to change compensation objects. We will review creating a new or ending an old program, plan, or option. We also review what to do when you need to move from an Unrestricted program to a Restricted one. TOPICS WILL INCLUDE: Adding or Modifying Compensation Objects Ending Compensation Objects Elements and Element Links Standard and Variable Rates Dependents and Beneficiaries Moving from Oracle Standard Benefits to Oracle Advanced Benefits A short, live demonstration (only if applicable) and question and answer period will be included. Oracle Advisor Webcasts are dedicated to building your awareness around our products and services. This session does not replace offerings from Oracle Global Support Services. Click here to register for this session ------------------------------------------------------------------------------------------------------------- The above webcast is a service of the E-Business Suite Communities in My Oracle Support. For more information on other webcasts, please reference the Oracle Advisor Webcast Schedule.Click here to visit the E-Business Communities in My Oracle Support Note that all links require access to My Oracle Support.

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• Cannot delete apt-fast for a clean install

  - by colby

  This is my problem: $ destroy apt-fast [sudo] password for colbyryptos: Reading package lists... Done Building dependency tree Reading state information... Done Package apt-fast is not installed, so not removed 0 upgraded, 0 newly installed, 0 to remove and 14 not upgraded. 1 not fully installed or removed. After this operation, 0 B of additional disk space will be used. debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable Setting up man-db (2.6.1-2) ... debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable dpkg: error processing man-db (--configure): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: man-db E: Sub-process /usr/bin/dpkg returned an error code (1) I have also tried sudo rm /var/lib/dpkg/lock, followed by sudo dpkg --configure -a. It then gives me this $ sudo dpkg --configure -a [sudo] password for colbyryptos: Setting up man-db (2.6.1-2) ... debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by another process: Resource temporarily unavailable dpkg: error processing man-db (--configure): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: man-db

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• Devoxx 2011 Started Today

  - by Yolande

  Devoxx 2011, organized by Java user group in Belgium, is the biggest Java conference in Europe. The first two University Days set the tone for the weeklong conference with its in-depth technical sessions lead by luminaries from the Java community and industry experts. Each day is a great mix of 3 hour sessions and hands-on labs, 30 minute Tools-in-Action sessions giving tips for faster and better application development and the traditional Birds-of-a-Feather sessions in the evening. Java sessions for today and tomorrow: - Next Gen Enterprise Apps - Bert Ertman and Paul Bakker talked about new Java EE 6 APIs that reduces the need for boilerplate code and configuration. - JavaFX 2.0 – A Java developer’s guide - Stephen Chin and Peter Pilgrim will give an overview of new version and how Java developers can take advantage of it - Java Rich Clients with JavaFX 2.0 - Richard Bair and Jasper Potts will get into JavaFX 2.0 APIs - Building an end-to-end application using Java EE 6 and NetBeans - Arun Gupta will showcase how to write Java EE 6 applications more effectively. - The OpenJDK Community BOF with Dalibor Topic Starting Tuesday, come by the Oracle booth to chat about technology, enter our raffle and have a beer every day at 18:45 The sessions will be available on Parleys website after the conference. In the meantime, you can learn a lot about those Java technologies on our website: - JavaFX 2.0 tutorials and documentation - OpenJDK - News from the GlassFish community - JavaEE 6 resources - JavaOne sessions

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• Making The EBS Upgrade From 11.5.10 Easier - Part III

  - by Annemarie Provisero

  ADVISOR WEBCAST: Making The EBS Upgrade From 11.5.10 Easier - Part III PRODUCT FAMILY: E-Business Suite July 19, 2011 at 8 am PT, 9 am MT, 11 am ET This one-hour session is recommended for technical users who are responsible for upgrading their E-Business Suite applications from Release 11.5.10 to Release 12.1.x. As you begin your upgrade process, there are a number of tools available to assist you in a successful upgrade. A successful upgrade requires careful planning, correct upgrade processing, detailed testing, and user (re)training prior to upgrade. Over three sessions we will discuss the tools that you can use to assist in your upgrade tasks. These tools are available to you via My Oracle Support and as part of the E-Business Suite product offerings. In this third session, we’ll cover the Best Practices for Using The Upgrade Tools. Additionally, this session includes an extended question and answer period. In the first part of the three-session series, we covered the following topics: Overview of Tools Available for Upgrading Upgrade versus Re-implementing Upgrade Community Upgrade Product Information Center Page Detailed Look at Upgrade Advisor In the second session, we covered the following topics: Recap of Part I Detailed Look at Maintenance Wizard Detailed Look at Patch Wizard A replay of those sessions is available via Note 740964.1, Advisor Webcast Archive. A short, live demonstration (only if applicable) and question and answer period will be included. Oracle Advisor Webcasts are dedicated to building your awareness around our products and services. This session does not replace offerings from Oracle Global Support Services. Click here to register for this session ------------------------------------------------------------------------------------------------------------- The above webcast is a service of the E-Business Suite Communities in My Oracle Support. For more information on other webcasts, please reference the Oracle Advisor Webcast Schedule.Click here to visit the E-Business Communities in My Oracle Support Note that all links require access to My Oracle Support.

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• How to properly learn ASP.NET MVC

  - by Qmal

  Hello everyone, I have a question to ask and maybe some of you will think it's lame, but I hope someone will get me on the right track. So I've been programming for quite some time now. I started programming when I was about 13 or so on Delphi, but when I was about 17 or so I switched to C# and now I really like to program with it, mostly because it's syntax is very appealing to me, plus managed code is very good. So it all was good and fun but then I had some job openings that I of course took, but the problem with them is that they all are about web programming. And I had to learn PHP and MVC fundamentals. And I somewhat did while building applications using CI and Kohana framework. But I want to build websites using ASP.NET because I like C# much, much more than PHP. TL;DR I want to know ASP.NET MVC but I don't know where to start. What I want to start with is build some simple like CMS. But I don't know where to start. Do I use same logic as PHP? What do I use for DB connections? And also, if I plan to host something that is build with ASP.NET MVC3 on a hosting provider do I need to buy some kind of license?

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• Windows Azure Interop

  - by kaleidoscope

  How Windows Azure Platform is an open cloud platform. What makes it interoperable? The Windows Azure platform supports popular standards and protocols including SOAP, REST, and XML. Developers can use their preferred programming frameworks including .NET, and PHP, now. Tools such as Eclipse have been created for PHP developers for building Windows Azure applications. Now external endpoints (inbound traffic) have been enabled to worker a role, which enables applications that receive internet traffic that aren’t running under IIS. Windows Azure interoperable with Java At PDC 09, solution accelerator for Tomcat is delivered. Tomcat is an open source software implementation of the Java Servlet and JavaServer Pages technologies. The Windows Azure solution accelerator leverages a PDC09 feature that enable arbitrary processes to bind to inbound service endpoints. Windows Azure interoperable with PHP The Windows Azure tools for Eclipse extension builds upon the PHP Development Toolkit (PDT) and integrates Web Tools Platform (WTP) to provide a complete toolkit for Windows Azure web application development. For more details please refer to the link: http://www.microsoft.com/windowsazure/faq/   Rituraj

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• Who spotted the omission?

  - by olaf.heimburger

  In my entry OFM 11g: Install OAM 10.1.4.3 (32-bit) on 64-bit RedHat AS 5 I explained how to install OAM 10.1.4.3 (32-bit) on 64-bit RedHat. This is great and works. If you seriously want to use OAM 10.1.4.3 you should consider OHS 11g 32-bit. But this installation is a bit tricky. Nearly all tricks to get this done are described in the above mentioned entry. Today I realized that I missed a small bit to get the installation successfully done.The missing part is within the script to create a vital piece of the OHS 11g package. This part is called genclientsh and resides in $OHS_HOME/bin. This script uses gcc to link binaries. By default this script works great, but on a 64-bit Linux it fails. To get around this, find the variable LD and change the value of gcc to gcc -m32.Done. Caveat On support.oracle.com you will find a Note that suggests to build a small shell script named gcc and includes the -m32 switch. Actually, I consider this as dangerous, because we are humans and tend to forget things quickly. Building a globally available script that changes things for a single setup has side effects that will result in unpredictable results.

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• Brocken package for libavcodec54 & libx264-123 in ubuntu 14.04LTS

  - by Kachavarapu Ajay

  $ sudo apt-get install -f [sudo] password for ajay: Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following extra packages will be installed: libx264-123 The following NEW packages will be installed: libx264-123 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. 2 not fully installed or removed. Need to get 0 B/345 kB of archives. After this operation, 1,005 kB of additional disk space will be used. Do you want to continue? [Y/n] y (Reading database ... 166965 files and directories currently installed.) Preparing to unpack .../libx264-123_0.123.2189+git35cf912-1ubuntu4_amd64.deb ... Unpacking libx264-123:amd64 (2:0.123.2189+git35cf912-1ubuntu4) ... dpkg-deb (subprocess): decompressing archive member: lzma error: compressed data is corrupt dpkg-deb: error: subprocess <decompress> returned error exit status 2 dpkg: error processing archive /var/cache/apt/archives/libx264-123_0.123.2189+git35cf912-1ubuntu4_amd64.deb (--unpack): cannot copy extracted data for './usr/lib/x86_64-linux-gnu/libx264.so.123' to '/usr/lib/x86_64-linux-gnu/libx264.so.123.dpkg-new': unexpected end of file or stream Errors were encountered while processing: /var/cache/apt/archives/libx264-123_0.123.2189+git35cf912-1ubuntu4_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1)

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• Apt-get saying "Unable to correct problems, you have held broken packages."

  - by YatharthROCK

  TL;DR: sudo apt-get install ... saying "Unable to correct problems, you have held broken packages." The problem I was trying to get the WebApps feature for PP and QQ following this blog post. I ran the sudo add-apt-repository ppa:webapps/preview command to add the repository, but i got a connection error. Since I know my current ISP gives a shaky connection, I tried again and sure enough, it worked. Then I ran sudo apt-get install unity-webapps-preview, but I realized we had to update apt-get first, so I hit Ctrl + C to stop it. Then I ran sudo apt-get update which worked w/o a fuss, but when I ran sudo apt-get install unity-webapps-preview again later, it showed an error message. Here's the dump: Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: unity-webapps-preview : Depends: xul-ext-unity but it is not going to be installed Depends: xul-ext-websites-integration but it is not going to be installed Depends: xul-ext-webaccounts but it is not going to be installed E: Unable to correct problems, you have held broken packages. I think this might be because of me interrupting the earlier command. It hadn't got a chance to output anything, though — I stopped it pretty fast. What I tried I have tried running a number of commands:- sudo apt-get install --fix-broken sudo apt-get autoclean sudo apt-get autoremove sudo apt-get -f install sudoapt-get install ppa-purgeandsudo ppa-purge ppa:webapps/preview` Even after running sudo apt-get upgrade after every try, none of them worked. Research I tried searching Google, looking at a couple of forums and searching on AU, but to no avail. Help would be appreciated.

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• What's a good entity hierarchy for a 2D game?

  - by futlib

  I'm in the process of building a new 2D game out of some code I wrote a while ago. The object hierarchy for entities is like this: Scene (e.g. MainMenu): Contains multiple entities and delegates update()/draw() to each Entity: Base class for all things in a scene (e.g. MenuItem or Alien) Sprite: Base class for all entities that just draw a texture, i.e. don't have their own drawing logic Does it make sense to split up entities and sprites up like that? I think in a 2D game, the terms entity and sprite are somewhat synonymous, right? But I do believe that I need some base class for entities that just draw a texture, as opposed to drawing themselves, to avoid duplication. Most entities are like that. One weird case is my Text class: It derives from Sprite, which accepts either the path of an image or an already loaded texture in its constructor. Text loads a texture in its constructor and passes that to Sprite. Can you outline a design that makes more sense? Or point me to a good object-oriented reference code base for a 2D game? I could only find 3D engine code bases of decent code quality, e.g. Doom 3 and HPL1Engine.

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• Free Developer Day - Hands-on Oracle 11g Applications Development

  - by [email protected]

  Spend a day with us learning the key tools, frameworks, techniques, and best practices for building database-backed applications. Gain hands-on experience developing database-backed applications with innovative and performance-enhancing methods. Meet, learn from, and network with Oracle database application development experts and your peers. Get a chance to win a Flip video camera and Oracle prizes, and enjoy post-event benefits such as advanced lab content downloads.Bring your own laptop (Windows, Linux, or Mac with minimum 2Gb RAM) and take away scripts, labs, and applications*.Space is limited. "Register Now"  for this FREE event. Don't miss your exclusive opportunity to meet with Oracle application development & database experts, win Oracle Trainings, and discuss today's most vital application development topics.          Win two Oracle Trainings valued in $2500 each. Offered by SDT Learning Corp·         Oracle Application Express: Developing Web Applications (duración de 4 días)·         Oracle Fusion Middleware 11g: Java Programming Ed 1.1 (duración de 5 días)You can also be registered Calling to Jamielle Gandía at 787-999-3187Requirements by TrackFor .Net Track1) A windows machine with 2 GB memory2) Attendees must in advance of the show, download and install VMWare player:       http://www.vmware.com/products/player/3) Attendees should test their machine to make sure they can run an executable on an external USB hard drive (some corporate machines are locked down so they cannot do this)For Java TrackYou will save time if you install these applications in advance:1) A windows machine with 2 GB memory2) VirtualBox must be installed in each laptopWhat is virtual box? Where can I download it?For APEX Track1) A windows machine with 2 GB memoryOracle Corporate agenda @  HereNote:  (Limited to 50 people per Track)

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• Custom inventory items based on inheritance

  - by Bogdan Marginean

  So, here's the scenario: I'm building an RPG. Like most of the other RPGs on the market, my game will feature an inventory and of course, inventory items. So far I've worked well with using a single class for all items, because I did not need anything else than character stat alteration on item usage (consumption). However, I'd like some items to have a more exotic effect. Think of something like when the user consumes a transformation potion, he automatically turns into a beast. In order to achieve this I've thought about declaring a new class that inherits from BaseItem for each item. Each descendant would override some methods (like void OnConsume()), to change the base behavior. This works fine, but when it comes to inventory management, I have some issues. The actual inventory will have to work with BaseItem components only (for obvious reasons, as it's an enumerable collection of objects of the same type); casting any descendant to the base class is possible, so no problems in adding items to the inventory. But how can I keep track of the descendant's type (class) for each item in the inventory? And how to perform the descendant's OnConsume from withint he inventory, for each item? Let me know if you can think of a better solution than mine, or if you can think of a solution to my problem only. Development is done in C#, inside Unity 3.5. Thanks!

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• Were the first assemblers written in machine code?

  - by The111

  I am reading the book The Elements of Computing Systems: Building a Modern Computer from First Principles, which contains projects encompassing the build of a computer from boolean gates all the way to high level applications (in that order). The current project I'm working on is writing an assembler using a high level language of my choice, to translate from Hack assembly code to Hack machine code (Hack is the name of the hardware platform built in the previous chapters). Although the hardware has all been built in a simulator, I have tried to pretend that I am really constructing each level using only the tools available to me at that point in the real process. That said, it got me thinking. Using a high level language to write my assembler is certainly convenient, but for the very first assembler ever written (i.e. in history), wouldn't it need to be written in machine code, since that's all that existed at the time? And a correlated question... how about today? If a brand new CPU architecture comes out, with a brand new instruction set, and a brand new assembly syntax, how would the assembler be constructed? I'm assuming you could still use an existing high level language to generate binaries for the assembler program, since if you know the syntax of both the assembly and machine languages for your new platform, then the task of writing the assembler is really just a text analysis task and is not inherently related to that platform (i.e. needing to be written in that platform's machine language)... which is the very reason I am able to "cheat" while writing my Hack assembler in 2012, and use some preexisting high level language to help me out.

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• Antenna Aligner Part 3: Kaspersky

  - by Chris George

  Quick one today. Since starting this project, I've been encountering times where Nomad fails to build my app. It would then take repeated attempts at building to then see a build go through successfully. Rob, who works on Nomad at Red Gate, investigated this and it showed that certain parts of the message required to trigger the 'cloud build' were not getting through to the Nomad app, causing the HTTP connection to stall until timeout. After much scratching heads, it turns out that the Kaspersky Internet Security system I have installed on my laptop at home, was being very aggressive and was causing the problem. Perhaps it's trying to protect me from myself? Anyway, we came up with an interim solution why the Nomad guys investigate with Kaspersky by setting Visual Studio to be a trusted application with the Kaspersky settings and setting it to not scan network traffic. Hey presto! This worked and I have not had a single build problem since (other than losing internet connection, or that embarrassing moment when you blame everyone else then realise you've accidentally switched off your wireless on the laptop).

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• KVM not installed?

  - by NJRandy

  When I run virt-manager, and click on the icon to create a new virtual machine, I get an error that KVM is not installed or is not loaded. I use Ubuntu GNOME 14.04 All qemu packages are version 2.0.0+dfsg-2ubuntu1 qemu-kvm and many other qemu packages installed... libvirt packages: 1.2.2-0ubuntu13.1 libvirt0 libvirt-bin libvirt-doc python-libvirt virt-manager 0.9.5-1ubuntu3 When I open terminal and enter lsmod | grep kvm I get nothing returned. No lines showing kvm or kvm_amd and no error of any kind. Hardware: Tyan S2877 with dual Opteron 285s I have the latest bios and don't see any setting in there to turn virtualization on or off. when I run sudo apt-get -s install qemu-kvm Here are the results: Reading package lists... Done Building dependency tree Reading state information... Done qemu-kvm is already the newest version. The following packages were automatically installed and are no longer required: kde-l10n-engb libgtk2-gladexml-perl libqt4-test libvncserver0 Use 'apt-get autoremove' to remove them. 0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded. @jobin: the problem was my hardware. I just bought it a few months ago, although obviously used LOL

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• "From Russia with Love" - My Oracle Russian Experience

  - by cwarticki

  Two weeks ago, I traveled to Moscow, Russia. I had the pleasure of meeting with many of our Oracle Partners and Customers in the region.  I also worked with our Oracle Russia team throughout the week building many new friendships. The showcase for the week was an Oracle Support Strategy event for our Oracle Partners and Customers.  It was held at the Kateria-City Hotel, Moscow.  The Oracle Marketing team did an amazing job registering 100+ for the event, and nearly 100 were in attendance.           During the event, I spoke about many different topics. Part was a hands-on workshop to personalize your MOS Dashboard and configure Hot-Topics Email alerts.  Customers learned how to subscribe to newsletters and other Oracle information.  It covered a mulitude of Support Best Practices.  Additionally, I presented Platinum Services to the audience and my colleague Kristophe Hermans, from Oracle Belgium spoke on Proactive Support. In addition, I had the distinct privilege to meet one-on-one with our customers representing OJSC VimpelCom, MTC-Rus and Sberbank.  Pictured with me is Valery Yourinsky, Director of Technology Consulting Dept, FORS Distribution (Oracle Platinum Partner) Finally, I spent 2.5 days with my Oracle colleagues from Oracle Russia. They are super, hard-working, dedicated, customer-service professionals. All of them! I owe them all a debt of gratitude. Next time, we meet in Florida - ok? I am very appreciative to all our Oracle partners, customers and colleagues.  Thanks for hosting me and showing me a wonderful time in your country.  I look forward to my return. Sincerely,Chris WartickiGlobal Customer Management

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• What is the Best way to learn c# programming and capability to do anything with C#?

  - by MSU

  I browsed all the answers given in Stackoverflow,i couldn't find my answer that's why i am writing this, so please don't mark this a duplicate. My case i want to get the capability of doing anything in C# from building applications to solving problems. I searched for and tried to read books. Then one of the experts said, reading books will not make any good for you, for learning you have to solve problems i.e. real world problems in C#, he gave me some sample problems, which i previously did in C++, i started doing, but the thing is that i know the internal logic of solving the problem or the algorithm to solve. But i don't know how to imepelement them using C# efficiently. so, the gap is, i can't think in C#, I know the message to passed but don't the exact way to pass it. I did a program to solve a problem, then find out there are much easier ways of doing it wherever i was doing it in tougher way. So, can you guys(C# experts) please enlighten me, what i need to get hold of the language and get the ability to code in C# proficiently?

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• Difference between bug, defect and flaw

  - by Hossein

  I was reading "Software Security: Building Security In" and in the first chapter I faced with 3 terms: bug, defect and flaw. The author gave a definition for each of them but I couldn't completely understand these. Can someone give me some examples for each term? What is a defect and what is a flaw? I think I know what bug is, a bug is a malfunction of a part of system which produces undesirable result, be it crashing on a wrong input or miscalculating a series of computations. Can someone elaborate more and correct me if I am wrong in this? UPDATE To be more precise in the book I mentioned above, they (the words) are presented in a way to make a distinction, that's why I am asking to know more. In that book there are some examples denoting which sample belongs to what and which category. For example: Buffer overflow is said to be a bug and issues in method overriding (subclassing issues) is being related to flaw category. Again race condition handling issues are considered bugs and Error-handling problems (fails open) are told to be flaws! I want more elaboration on these regards.

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• How can I save state from script in a multithreaded engine?

  - by Peter Ren

  We are building a multithreaded game engine and we've encountered some problems as described below. The engine have 3 threads in total: script, render, and audio. Each frame, we update these 3 threads simultaneously. As these threads updating themselves, they produce some tasks and put them into a public storage area. As all the threads finish their update, each thread go and copy the tasks for themselves one by one. After all the threads finish their task copying, we make the threads process those tasks and update these threads simultaneously as described before. So this is the general idea of the task schedule part of our engine. Ok, well, all the task schedule part work well, but here's the problem: For the simplest, I'll take Camera as an example: local oldPos = camera:getPosition() -- ( 0, 0, 0 ) camera:setPosition( 1, 1, 1 ) -- Won't work now, cuz the render thread will process the task at the beginning of the next frame local newPos = camera:getPosition() -- Still ( 0, 0, 0 ) So that's the problem: If you intend to change a property of an object in another thread, you have to wait until that thread process this property-changing message. As a result, what you get from the object is still the information in the last frame. So, is there a way to solve this problem? Or are we build the task schedule part in a wrong way? Thanks for your answers :)

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• JavaOne India Early Bird Discount Ends April 2nd

  - by Tori Wieldt

  JavaOne India3-4 May, 2012Hyderabad International Convention Centre Register Now and Save – For A Limited Time!If you register by 2 April, you'll save INR 1080 on this premier Java technology conference. JavaOne will return for the second straight year to India May 3, 4 at the Hyderabad Convention Center. This year's line up will once again bring some of the leading experts in from all over the world as well as local Indian content. Sharat Chander (Director - Java Technology Outreach) said, "JavaOne is the premier Java technology conference in the world, for developers by developers.  Every year we keep increasing community participation in both the content selection and content delivery, and this year we expect even more."The JavaOne India tracks are:Client-Side Technologies and Rich User ExperiencesLearn about developments in Java for the desktop and practices for building rich, immersive, and powerful user experiences across multiple hardware platforms and form factors. Core Java PlatformDiscover the latest innovations in Java virtual machines. Get deep technical explanations in security and networking and enhancements that allow dynamic programming languages to drive Java platform adoption. Java EE Web Profile, Platform Technologies, Web Services, and the Cloud Update your knowledge on topics such as Web application development, persistence, security, and transactions. This track will also address modularity, enterprise caching, Web sockets, and internet identity. Mobile, Java Card, Embedded, and DevicesThis track is devoted to Java technology as the ultimate platform for mobile computing. It also covers embedded and device usages of Java technologies, including Java SE, Java ME, Java Card, and JavaFX. Share this event: #javaoneIndia

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• Ensuring non conflicting components in a modular system

  - by Hailwood

  So lets say we are creating a simple "modular system" framework. The bare bones might be the user management. But we want things like the Page Manager, the Blog, the Image Gallery to all be "optional" components. So a developer could install the Page Manager to allow their client to add a static home page and about page with content they can easily edit with a wysiwyg editor. The developer could then also install the Blog component to allow the client to add blog entries. The developer could then also install the Gallery component to allow the client to show off a bunch of images. The thing is, all these components are designed to be independent, so how do we go about ensuring they don't clash? E.g. ensuring the client doesn't create a /gallery page with the Page Manager and then wonder why the gallery stopped working, or the same issue with the Blog component, assuming we allow the users to customize the URL structure of the blog (because remember, the Page Manager doesn't necessarily have to be there, so we might not wan't our blog posts to be Date/Title formatted), likewise our clients aren't always going to be happy to have their pages under pages/title formatting. My core question here is, when building a modular system how to we ensure that the modules don't conflict without restricting functionality? Do we just leave it up to the clients/developer using the modules to ensure they get setup in a way that does not conflict?

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• Can I host a website on a different address from the webmail?

  - by Andrew

  I have what is to me an unusual situation. I have a client for whom I have built a website which I will be hosting, they have been using their domain name for their email addresses for a long period before I came along so moving their email account to my host would be problematic and building the website with their current host would also be problematic because their host is very restrictive. So to fix this I altered the A record in their existing control panel to point the domain name to my server. As a result I can see the pages that I have created at their domain and they can still access their existing webmail. However, it appears that they are now experiencing problems receiving email so I can only assume my solution was incorrect. What is the correct way to point their domain at my website but keep their webmail with the existing host? EDIT: 25/5/2012 - My client has finally responded to me after changing the MX record on their existing C-Panel. Email to their email address were being bounced back with the error 'no such recipient', so I set up the same email address in the new C-Panel and changed the MX record there to 'Remote mail exchanger' which has stopped the emails bouncing but has apparently lost them in cyperspace! Unfortunately I can't add a new record because this would require a fully qualified domain name and their domain name is of course pointed at our server!

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