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• Colleague unwilling to use unit tests "as it's more to code"

  - by m.edmondson

  A colleague is unwilling to use unit tests and instead opting for a quick test, pass it to the users, and if all is well it is published live. Needless to say some bugs do get through. I mentioned we should think about using unit tests - but she was all against it once it was realised more code would have to be written. This leaves me in the position of modifying something and not being sure the output is the same, especially as her code is spaghetti and I try to refactor it when I get a chance. So whats the best way forward for me?

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• How to optimize collision detection

  - by Niklas

  I am developing a 2D Java Game with LibGDX. This is what it kinda looks like (simplified): The big black circle is the player, which you can move by tilting the smartphone. The red circles and blue rectangles are enemies, which will move from the right of the screen to the left. The player has to avoid crashing into them. Right now I am checking in the Game Loop every enemy against the player, whether they collide or not. This seems kinda inefficient to me, but I don't know how to improve it. I have tried the Quadtree approach, but it did not really work. The player could easily glitch through enemies and the collision was not detected. Unfortunately, I have destroyed the Quadtree implementation. I used this [tutorial/blog] as my Quadtree implementation(http://gamedevelopment.tutsplus.com/tutorials/quick-tip-use-quadtrees-to-detect-likely-collisions-in-2d-space--gamedev-374).

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• What method replaces GL_SELECT for box selection?

  - by Jake

  Last 2 weeks I started working on a box selection that selects shapes using GL_SELECT and I just got it working finally. When looking up resources online, there is a significant number of posts that say GL_SELECT is deprecated in OpenGL 3.0, but there is no mention of what had replace that function. I learnt OpenGL 1.2 in back in college 2 years back but checking wikipedia now, I realise we already have OpenGL 4.0 but I am unaware of what I need to do to keep myself up to date. So, in the meantime, what would be the latest preferred method for box selection? EDIT: I found http://www.khronos.org/files/opengl-quick-reference-card.pdf on page 5 this card still lists glRenderMode(GL_SELECT) as part of the OpenGL 3.2 reference.

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• Oracle Enterprise Manager 12c Delivers Advanced Self-Service Automation for Oracle Database 12c Multitenant

  - by Javier Puerta

  Broadens Support for Managing Full Lifecycle of New Pluggable Database as a Service Redwood Shores, Calif. – November 4, 2013 News Summary Database as a Service (DBaaS) offers organizations accelerated deployment, elastic capacity, greater consolidation efficiency, higher availability and lower overall operational cost and complexity. Oracle Database 12c provides an innovative multitenant architecture featuring pluggable databases that makes it easy to offer DBaaS and consolidate databases on clouds. To support customers’ move to this model, Oracle Enterprise Manager 12c adds new automation capabilities to enable quick provisioning of database clouds through self-service, saving administrators time and effort. These new capabilities can help customers adopt Oracle Database 12c faster and pave the way to a DBaaS delivery model. News Facts Oracle today announced a new release of Oracle Enterprise Manager 12c, which provides a turnkey, full lifecycle DBaaS management solution for Oracle Multitenant, an option for Oracle Database 12c Enterprise Edition. Read full press release here

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• Oracle Enterprise Manager 12c Delivers Advanced Self-Service Automation for Oracle Database 12c Multitenant

  - by Javier Puerta

  Broadens Support for Managing Full Lifecycle of New Pluggable Database as a Service Redwood Shores, Calif. – November 4, 2013 News Summary Database as a Service (DBaaS) offers organizations accelerated deployment, elastic capacity, greater consolidation efficiency, higher availability and lower overall operational cost and complexity. Oracle Database 12c provides an innovative multitenant architecture featuring pluggable databases that makes it easy to offer DBaaS and consolidate databases on clouds. To support customers’ move to this model, Oracle Enterprise Manager 12c adds new automation capabilities to enable quick provisioning of database clouds through self-service, saving administrators time and effort. These new capabilities can help customers adopt Oracle Database 12c faster and pave the way to a DBaaS delivery model. News Facts Oracle today announced a new release of Oracle Enterprise Manager 12c, which provides a turnkey, full lifecycle DBaaS management solution for Oracle Multitenant, an option for Oracle Database 12c Enterprise Edition. Read full press release here

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• To Catch A Thief at Microsoft DevDays 2010

  Here's a quick update. I was down at a nice reception at the hotel for the conference speakers when a door is violently thrown open and a guys goes running through and down the hall. Following closely behind was a security guard. I immediately took off running after both of them. We tore down a long hallway and out the door of the hotel into the street. I had caught up to the security guard, but the thief had put a little distance between himself and the guard. The guard gave up the chase. The crook...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• How should I make searching a relational database more efficient?

  - by Travis J

  This is in the scope of a web application. I have a database which has a few nested relations. There is a feature which depicts the history of a large chain of relations. It is essentially a data analysis feature. The issue is that in order to search, a large object graph must be loaded - the loading time for this object graph is not quick enough to be viable. The problem is that without loading the whole graph it makes searching from a single string nearly impossible. In order to search, explicit fields must be specified and the search data supplied. Is there a design pattern for exposing the data in a way which facilitates a single string search instead of having to explicitly define parameters?

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• What's the format of Real World Performance Day?

  - by william.hardie

  A question that has cropped a lot of late is "what's the format of Real World Performance Day?" Not an unreasonable question you might think. Sure enough, a quick check of the Independent Oracle User Group's website tells us a bit about the Real World Performance Day event, but no formal agenda? This was one of the questions I posed to Tom Kyte (one of the main presenters) in our recent podcast. Tom tells us that this isn't your traditional event where one speaker follows another with loads of slides. In fact, the Real World Performance Day features Tom and fellow Oracle performance experts - Andrew Holdsworth and Graham Wood - continuously on stage throughout the day. All three will be discussing database performance challenges and solutions from development, architectural design and management perspectives. There's going to be multi-terabyte demos on show, less of the traditional slides, and more interactive debate and discussion going on. Tune-in and hear what else Tom has to say about this fairly unique event!

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• What are the most important concepts to understand for "fluency in developer English"?

  - by Edward Tanguay

  In April, I'm going to be giving a talk called **English 2.0 - Understanding the Language of Developers" to a group of English teachers. The purpose is in two hours to give them a quick background in key concepts so that they can better understand developer blogs and podcasts and are able to ask better questions when talking to developers. What do you think are the most important concepts to understand, concepts that developers take for granted but the general public is not familiar with? Here are a few ideas: version control abstractions pub/sub push vs. pull debugging modularity three-tier architecture class/object "spaghetti code" vs. OOP exception throwing crowd sourcing refactoring the cloud DRY - don't repeat yourself client/server unit testing designer/developer

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• Good PHP BOOKS for starters!

  - by Goma

  I started reading some PHP books. Most of them in their introduction say that this book , unlike other books, it follows a good habits and practices. Now, I do not know which book tells the truth, and which writer is the most experienced in PHP. These are the books that I had a quick look to their first chapter: PHP and MySQL Web Development (Developer's Library) by Luke Welling and Laura Thomson. Build Your Own Database Driven Web Site Using PHP & MySQL by Kevin Yank. PHP and MySQL for Dummies by Janet Valade. Now, it's your time to advise me and tell me about the excellent one that follows best practices, please give an advice from your experience. (It could be any other book!). Regards,

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• SQLMidlands & SQLLunch

  - by Dave Ballantyne

  Many thanks to all those that turned out to see my presentation on Thursday (16th of Feb) of “Cursors are Evil” at SQLMidlands.  The scripts i used are here : https://skydrive.live.com/?cid=4004b6a3bc887e2c&id=4004B6A3BC887E2C%21216 You will need the AdventureWorks2008r2 release to run these, feel free to mail me ([email protected]) with any questions.  They are based upon a series of articles I wrote for SQLServerCentral which can be found here and here. Also I am starting ,or at least having an attempt at, a new user group in London.  This is SQLLunch, meeting downstairs at The Golden Fleece , EC4N 1SP which is 2 minutes from Bank Tube , we will have a twice monthly meeting (2nd and 4th Tuesdays) for an ‘All Stuff, No Fluff’ event.  Put plainly, a quick hello followed by a 45 minute presentation , which will ,optimistically, have you there and back to your desk within a lunch hour. Registrations for the first series of dates are at sqlserverfaq.com If you would like to speak, then please get in touch. Hope to see you there. 

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• Setting up Oracle Linux 6 with public-yum for all updates

  - by wcoekaer

  I just wanted to give you a quick example on how to get started with Oracle Linux 6 and start using the updates we published on http://public-yum.oracle.com. Download Oracle Linux (without the requirement of a support subscription) from http://edelivery.oracle.com/linux. Install Oracle Linux from the ISO or DVD image Log in as user root Download the yum repo file from http://public-yum.oracle.com # cd /etc/yum.repos.d # wget http://public-yum.oracle.com/public-yum-ol6.repo If you want, you can edit the repo file and enable other repositories, I enabled [ol6_UEK_latest] by just setting enabled=1 in the file with a text editor. Run yum repolist to show the registered channels and you see we are including everything including the latest published RPMs. Now you can just run yum update and any time we release new security errata or bugfix errata for OL6, they will be posted and you will automatically get them. It's very easy, very convenient and actually very cool. We do a lot more than just build OL RPMs and distribute them, we have a very comprehensive test farm where we test the packages extensively.

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• Live examples of the Windows Azure Platform running Java and Ruby on Rails

  - by Eric Nelson

  At QCon in March we had a booth focused on interoperability out of which came the idea to create an application implemented in both Java and Ruby on Rails, running on top of the Windows Azure Platform. Nothing fancy, just an application to capture attendees view on Microsoft and Interoperability. It was implemented by Active Web Solutions, long time fans of Azure. Wroth a quick squint :-) Check out the related links below for info to get you up and running. Check out The Java version http://ukinterop.cloudapp.net/  The Ruby on Rails version http://rubyukinterop.cloudapp.net/ (run out of time to finish this one) Related Links: Tomcat Solution Accelerator http://code.msdn.microsoft.com/winazuretomcat AzureRunMe http://azurerunme.codeplex.com/ UK Azure Online Community – join today. UK Windows Azure Site Start working with Windows Azure

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• AJAX Requests & Client-Side JavaScript

  - by Sarah24

  I am new to AJAX and trying to understand a question I've been given: A HTTP request is generated by a form which contains some drop-down list. When the form is submitted, a new web page is displayed with some relevant text information (which is dependent on the list item selected). Now, the same parameters are sent to the server via an AJAX request, and the same text information is returned. Q. What tasks would the client-side JavaScript have to do to ensure a valid request was constructed and sent? Any useful links or quick explanations greatly appreciated.

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• NEW CERTIFICATION: Oracle Certified Expert, Oracle Database 11g Release 2 SQL Tuning

  - by Brandye Barrington

  Oracle Certification announces the release of the new Oracle Certified Expert, Oracle Database 11g Release 2 SQL Tuning certification. This certification is designed forDevelopers, Database Administrators and SQL developers who are proficient at tuning efficient SQL statements. This certification covers topics on core elements such as: identifying and tuning inefficient SQL statements, using automatic SQL tuning, managing optimizer statistics on database objects, implementing partitioning and analyizing queries. Beta testing for the Oracle Database 11g Release 2: SQL Tuning exam (1Z1-117) is now underway and thus is available at the greatly discounted rate of $50 USD. Visit pearsonvue.com/oracle and register for exam 1Z1-117. You can get all preparation details on the Oracle Certification website, including exam objectives, number of questions, time allotments, and pricing. QUICK LINKS: Certification Track: Oracle Certified Expert, Oracle Database 11g Release 2 SQL Tuning Certification Exam: Oracle Database 11g Release 2: SQL Tuning (1Z0-117) Certification Website: About Beta Exams Register Now: Pearson VUE

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• security cameras and Ubuntu

  - by Josh

  I am setting up a server of sorts and chose ubuntu for the OS as my dad has it on a few computers. I am unimpressed with Windows or MAC due to all the add-ons and complexity of it when all I want is something simple. The system will have 3 purposes, storing my wife's photography work (she is a professional photographer) storing music for quick access to our entertainment system (will be running the system thru the tv in our living room and thus though our surround sound) and will also serve as a DVR unit for a home security system I am going to put together. My question is what sort of software options are there for the Ubuntu system as far as a DVR with frame by frame playback. It does not need to be fancy but of course a variety of options are a nice touch.

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• HSSFS Part 3: SQL Saturday is Awesome! And DEFAULT_DOMAIN(), and how I found it

  - by Most Valuable Yak (Rob Volk)

  Just a quick post I should've done yesterday but I was recovering from SQL Saturday #48 in Columbia, SC, where I went to some really excellent sessions by some very smart experts.  If you have not yet attended a SQL Saturday, or its been more than 1 month since you last did, SIGN UP NOW! While searching the OBJECT_DEFINITION() of SQL Server system procedures I stumbled across the DEFAULT_DOMAIN() function in xp_grantlogin and xp_revokelogin.  I couldn't find any information on it in Books Online, and it's a very simple, self-explanatory function, but it could be useful if you work in a multi-domain environment.  It's also the kind of neat thing you can find by using this query: SELECT OBJECT_SCHEMA_NAME([object_id]) object_schema, name FROM sys.all_objects WHERE OBJECT_DEFINITION([object_id]) LIKE '%()%'  ORDER BY 1,2 I'll post some elaborations and enhancements to this query in a later post, but it will get you started exploring the functional SQL Server sea. UPDATE: I goofed earlier and said SQL Saturday #46 was in Columbia. It's actually SQL Saturday #48, and SQL Saturday #46 was in Raleigh, NC.

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• PowerShell, Start-Job, -ScriptBlock = sad panda face

  - by AaronBertrand

  I am working on a project where I am using PowerShell to collect a lot of performance counters from a lot of servers. More on that later. For now I wanted to highlight an important lesson I learned when trying to use Start-Job to call a PS script using -ScriptBlock and passing in parameters. This could be a comedy of errors if you haven't come across it before, so I thought it might be useful to throw up a quick post about it. To keep things simple, let's say I am calling a script with two parameters,...(read more)

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• Three apps going through apache. How to configure apache httpd? [migrated]

  - by Chris F.

  I have a quick question but I've been struggling to find the best solution: I have two java webapps and wordpress (php) that I need to serve through my Prod website: App #1 should be accessed when pointing to www.example.com/ (this would have other url too such as "www.example.com/book") App #2 should be accessed when pointing to www.example.com/manage Finally WordPress would be accessed at www.example.com/info How can I configure apache to serve all these three instances at the same time? So far I have and it's not quite working right. Any suggestions would be much appreciated! Listen 8081 <VirtualHost *:8081> DocumentRoot /var/www/html </VirtualHost> ProxyPass /manage http://127.0.0.1:8080/manage ProxyPassReverse /manage http://127.0.0.1:8080/manage ProxyPass /info http://127.0.0.1:8081/info ProxyPassReverse /info http://127.0.0.1:8081/info ProxyPass / http://127.0.0.1:9000/ ProxyPassReverse / http://127.0.0.1:9000/

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• Can I remove "Free space" text from the Nautilus status bar?

  - by DisgruntledGoat

  I want to remove the part in Nautilus that shows free disk space. In theory it may useful but it's so badly designed, every time I select some files my eye gets drawn to "15 GB" instead of the actual size of the files. And with no files selected, it says something like "24 items, Free space 15GB" which at a quick glance looks like the total size of the files. I've looked through the preferences and don't see anything. I'm using Ubuntu 10.10 with Nautilus 2.32.0.

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• OWSM vs. OEG - When to use which component - 11g

  - by Prakash Yamuna

  A lot of people both internal to Oracle and customers keep asking about when should OWSM be used vs. OEG. Sometime back I posted Oracle's vision for layered SOA security Here is a quick summary: Use OWSM in Green Zone Use OEG in Red Zone (DMZ) If you need end-to-end security in which case they will want both OWSM and OEG. This is the topology I would recommend for most customers. If you need only Green Zone security - then use OWSM in conjunction with Oracle FMW products like SOA Suite, OSB, ADF, WLS, BI, etc both on the Client Side and Service Side (assuming you are using FMW technologies for both Clients and Services). If you need only Red Zone security - then use OEG on the Service Side. You can use OWSM for the Client Side if you are using FMW to build your clients.

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• TypeScript Resources

  - by csmith18119

  TypeScript looks like a great start to evolving javascript.  I am going to start playing with it seeing what it is like.  This is the post I will update will all the resources I've found. Welcome to TypeScript - The TypeScript Language has an offical site, and this is it. This site does a nice job of giving the key information about the language and its uses, as well as highlighting that it is an open source project, which is cross platform. TypeScript is still causing quite a buzz in the community, here are some more of peoples initial impressions: Introducing TypeScript - Rob Eisenberg Why does TypeScript have to be the answer to anything? - Scott Hanselman TypeScript (or the obligatory post about it) - Shawn Wildermuth TypeScript project in Visual Studio 2012 - Linvi Microsoft TypeScript : A quick introduction and A Love Affair Begins here. - Anoop Madhusudanan Microsoft TypeScript : A Typed Superset of JavaScript & Using TypeScript in ASP.NET MVC Projects - Shiju Varghese Hello TypeScript - Getting Started - Sumit Maitra

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• How to fix “Unit Test Runner failed to load test assembly”

  - by ybbest

  I encountered this issue a couple times during my recent project, every time I forgot what actually cause the issue. Therefore, I decide to write a quick blog post to make sure I can identify the issue quickly. Problem: Run unit test using a test runner and received a Unit Test Runner failed to load test assembly exception. Analysis: Basically, I have changed some code and start the test runner to run tests. The same dll have already been deployed to GAC. So the test runner actually tries to use the old version of the assembly thus could not load the assembly. Solution: Deploy the current version of dll to the GAC and re-run your test, it works like a charm.

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• New success stories for Oracle IRM and blog translations

  - by Simon Thorpe

  While we have been busy with the release of Oracle IRM 11g, we've had some customers create a few more success stories for us. These have now been added to our success stories page on this blog, quick links to them are below. Also the announcement has generated a lot of interest globally within Oracle and as such our friends in Latin America have been asking for some translated pages on the blog. So the first of these are now available in Brazilian Portuguese for both the Oracle IRM overview and the simple demonstration online where anyone can self register and experience Oracle IRM protected content. If you work for Oracle sales and would like to translate any of the information on this blog please contact us.

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• 3D Display Issue When Using Latest Java Runtime Versions - Patch now available...

  - by [email protected]

  Typically I focus my blog posts on Support process topics, and reserve most of the technical topics for the Support newsletter. This topic, however, warrants a quick mention in the blog since I know it's been affecting many users recently. For customers using the Client/Server Deployment of AutoVue, users that had upgraded their client Java Runtime Environment (JRE) to version 1.6.0_19 or later suddenly noticed that their 3D files were opening blank in AutoVue. This issue was due to a change in JRE version 1.6.0_19, and the AutoVue team now offers a patch to address the issue in AutoVue version 20.0.0. The patch number is 10268316, is available through the My Oracle Support portal, and is described further in KM Note 1104821.1. We'll mention it again in our next Support newsletter, and the AutoVue team will target to roll the same fix into the next available release of the product.

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