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• web server response code 500

  - by Bryan Kemp

  I realize that this may spur a religious discussion, but I discussed this with friends and get great, but conflicting answers and the actual documentation is of little help. What does the 500 series response codes mean from the webserver? Internal Server Error, but that is vague. My assumption is that it means that something bad happened to the server (file system corruption, no connection to the database, network issue, etc.) but not specifically a data driven error (divide by zero, record missing, bad parameter, etc). Something to note, there are some web client implementations (the default Android and Blackberry httpclients) that do not allow access to the html boddy if the server response is 500 so there is no way to determine what caused the issue from the client. What I have been been implementing recently is a web service that returns a json payload wrapped in a response object that contains more specific error information if it is data related, but the server response will be 200 since it finished the actual processing. Thoughts?

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• DevConnections new "Fundamentals" Track!

  - by psheriff

  Hi All, I am now the new Track Chair for the "Fundamentals" track at DevConnections. I know many of my readers feel overwhelmed by all of the "advanced" topics out there. The folks at the DevConnections conference realized that too and have added many new sessions that help programmers that are in the beginning to intermediate stage get up to speed on all the new technology that is coming out so fast. I will be presenting a whole day long workshop at the DevConnections conference in Orlando on March 27th entitled "Essential Business Desktop Programming with .NET". In addition I will be presenting the following sessions in the Fundamentals Track. MVVM Made Simple Unit Testing Basics and Architecting Your Application for Unit Testing Data Binding from A-Z in Silverlight From Zero to Windows Phone 7 in 75 MinutesI hope I will see you there! Join me at DevConnections @devconnections in Orlando March 27-30.   Save $200 use discount code DevCon1 Register today at bit.ly/fIZjXO

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• Platform Builder: Disable the USB Driver Dialog

  - by Bruce Eitman

  For a long time, Windows CE developers and users have wanted to disable the USB Driver Dialog that is displayed when an unknown USB device is plugged into the host controller.   Of course the question is always why would you want to do such a thing? The simple answer is that there are USB devices that are needed, like printers, which expose multiple functions to the bus, like scanners and faxes, which no Windows CE driver exists to support.   So the printer quietly loads a driver, but then the other functions cause a dialog to be shown. One solution is to create a USB Class driver that loads by default if no other driver has been loaded. This driver just accepts anything that it sees and then does nothing with it. Starting with the Windows Embedded CE 6.0 R3 March QFE/update, the USB 2.0 driver has a registry value to disable the dialog: [HKEY_LOCAL_MACHINE\Drivers\USB\LoadClients]       "DoNotPromptUser"=dword:0   Setting the DoNotPromptUser value to 1 disables the dialog. The default value is zero, so the driver continues to behave in the same way it always did unless you change this registry value.     Copyright © 2010 – Bruce Eitman All Rights Reserved

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• Creating packages in code - Workflow

  This is just a quick one prompted by a question on the SSIS Forum, how to programmatically add a precedence constraint (aka workflow) between two tasks. To keep the code simple I’ve actually used two Sequence containers which are often used as anchor points for a constraint. Very often this is when you have task that you wish to conditionally execute based on an expression. If it the first or only task in the package you need somewhere to anchor the constraint too, so you can then set the expression on it and control the flow of execution. Anyway, back to my code sample, here’s a quick screenshot of the finished article: Now for the code, which is actually pretty simple and hopefully the comments should explain exactly what is going on. Package package = new Package(); package.Name = "SequenceWorkflow"; // Add the two sequence containers to provide anchor points for the constraint // If you use tasks, it follows exactly the same pattern, they all derive from Executable Sequence sequence1 = package.Executables.Add("STOCK:Sequence") as Sequence; sequence1.Name = "SEQ Start"; Sequence sequence2 = package.Executables.Add("STOCK:Sequence") as Sequence; sequence2.Name = "SEQ End"; // Add the precedence constraint, here we use the package's constraint collection // as it hosts the two objects we want to constrain (link) // The default constraint is a basic On Success constraint just like in the designer PrecedenceConstraint constraint = package.PrecedenceConstraints.Add(sequence1, sequence2); // Change the settings to use a (dummy) expression only constraint.EvalOp = DTSPrecedenceEvalOp.Expression; constraint.Expression = "1 == 1";   The complete code file is available to download below. SequenceWorkflow.cs

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• How to Install & Use the Window Maker Desktop Environment on Ubuntu

  - by Chris Hoffman

  Window Maker is a Linux desktop environment designed to emulate NeXTSTEP, which eventually evolved into Mac OS X. With its focus on emulating NeXTSTEP, it eschews the task bars and application menu buttons found in many other lightweight desktop environments. Window Maker is now under active development again after seven years without an official release. A lot has changed on the Linux desktop front since Window Maker was last being actively developed, but Window Maker still provides a unique, minimal environment – for users looking for that sort of thing. How To Properly Scan a Photograph (And Get An Even Better Image) The HTG Guide to Hiding Your Data in a TrueCrypt Hidden Volume Make Your Own Windows 8 Start Button with Zero Memory Usage

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• How to determine number of resources to be allocated in a software project

  - by aditi

  Last day I have been interviewed and the interviwer asked me as given the outline of a project, how can we determine the number of resources to be needed for the same? I donot know to do do so? Is there any standard way of doing so? or is it based on the experience? or how.... I am pretty new in this activity and my knowledge is zero at present .... so any clear explanation with some example(simple) will help me(and people like me) to understand this. Thanks

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• 24 Hours of PASS scheduling

  - by Rob Farley

  I have a new appreciation for Tom LaRock (@sqlrockstar), who is doing a tremendous job leading the organising committee for the 24 Hours of PASS event (Twitter: #24hop). We’ve just been going through the list of speakers and their preferences for time slots, and hopefully we’ve kept everyone fairly happy. All the submitted sessions (59 of them) were put up for a vote, and over a thousand of you picking your favourites. The top 28 sessions as voted were all included (24 sessions plus 4 reserves), and duplicates (when a single presenter had two sessions in the top 28) were swapped out for others. For example, both sessions submitted by Cindy Gross were in the top 28. These swaps were chosen by the committee to get a good balance of topics. Amazingly, some big names missed out, and even the top ten included some surprises. T-SQL, Indexes and Reporting featured well in the top ten, and in the end, the mix between BI, Dev and DBA ended up quite nicely too. The ten most voted-for sessions were (in order): Jennifer McCown - T-SQL Code Sins: The Worst Things We Do to Code and Why Michelle Ufford - Index Internals for Mere Mortals Audrey Hammonds - T-SQL Awesomeness: 3 Ways to Write Cool SQL Cindy Gross - SQL Server Performance Tools Jes Borland - Reporting Services 201: the Next Level Isabel de la Barra - SQL Server Performance Karen Lopez - Five Physical Database Design Blunders and How to Avoid Them Julie Smith - Cool Tricks to Pull From Your SSIS Hat Kim Tessereau - Indexes and Execution Plans Jen Stirrup - Dashboards Design and Practice using SSRS I think you’ll all agree this is shaping up to be an excellent event.

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• Bitdefender Safebox Offers 2GB Free Storage for Android Users

  - by Jason Fitzpatrick

  Android: If you’re always on the lookout for new–and free!–cloud storage solutions, security company BitDefender has a new cloud service for Android uers. Safebox accounts come with a free 2GB storage to get you started. For those of you in the “You can never have enough backups!” camp, Bitdefender’s Safebox is a new offering (currently only available for PC/Android setups) on the remote-storage market. Free personal accounts come with 2GB of storage which is on par with other cloud storage providers. If you’re looking for cloud storage with the maximum number of features and heavy third-party support you’ll want to stick with a well established player like Dropbox. If you’re just looking for some extra storage for overflow media or some redundancy for your current backup solution, Safebox is a viable storage solution. Bitdefender Safebox [via Addicted Tips] Make Your Own Windows 8 Start Button with Zero Memory Usage Reader Request: How To Repair Blurry Photos HTG Explains: What Can You Find in an Email Header?

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• Expensive HDMI Cables Make No Difference

  - by Jason Fitzpatrick

  While we’re no strangers to spreading the news that expensive HDMI cables are a ripoff, we’re happy to share yet another study that shows there’s zero difference between a $5 cable and a $95 one. Over at the British hardware review site Expert Reviews, they subjected a wide selection of HDMI cables to extensive tests in a bid to produce the end-all examination of whether or not a premium HDMI cable could actually produce a better signal. They used capture cards, pixel-by-pixel comparison of output, and other techniques to pick over individual frames until they ultimately reached the same conclusion everyone outside of the Monster sales staff had already reached: you’re getting absolutely no benefit to spending $100 on cable that can be had for under five bucks. Hit up the link below to read over their methodology. Expensive Cables Make Absolutely No Difference [via Geek News Central] HTG Explains: What Is RSS and How Can I Benefit From Using It? HTG Explains: Why You Only Have to Wipe a Disk Once to Erase It HTG Explains: Learn How Websites Are Tracking You Online

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• What You Said: Your Tech Spring Cleaning Routines

  - by Jason Fitzpatrick

  Earlier this week we asked you to share your tech spring cleaning routine; now we’re back to highlight your tips, tricks, and techniques. What tools rule the spring cleaning roost? Compressed air and microfiber cloths are the tools of choice by a wide margin. D^Angelo highlights the software and physicals tools he uses: Backup all the important stuff just to be safe (c:/, my documents, desktop, drivers) Cleaning the dust with some office depot compressed air, avoiding spinning the fans. Use a brush for that small places (fans, memory, capacitors, etc). Use some dielectric spray on the motherboard. If the pc turned on without problems its time to use ccleaner, Check if there is a toolbar installed or another unusual software that I don’t want. Run my antivirus software or malwarebytes; some defraggler maybe. Make Your Own Windows 8 Start Button with Zero Memory Usage Reader Request: How To Repair Blurry Photos HTG Explains: What Can You Find in an Email Header?

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• Free Universal Construction Kit Links Different Construction Toy Systems

  - by Jason Fitzpatrick

  If you or a young tinker in your household is disappointed that there is no way to link LEGO bricks and Lincoln Logs (or other construction toys on the market) this project is for you. Free Universal Construction Kit is project oriented around creating inter-operable linking bricks that allow the user to link previously non-compatible building system. Using the bricks you can, for example, attach LEGO bricks to a K’Nex construction. The adapter bricks are all available as free 3D printer models–download them, fire up your 3D printer, and start mish-mashing your construction sets. Free Universal Construction Kits [via Make] The HTG Guide to Hiding Your Data in a TrueCrypt Hidden Volume Make Your Own Windows 8 Start Button with Zero Memory Usage Reader Request: How To Repair Blurry Photos

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• How can I get data off of a (probably) very corrupt drive?

  - by Mercury1964

  So, my younger brother wanted my help today. Apparently, he was helping a friend install Ubuntu to his laptop, and midway through the install (on a filled hard-drive with Windows 8, from the liveusb thing): 1) They realized that they had chosen "Erase and install" accidentally and decided the best course of action was to (in the middle of an install, remember) 2) Force shutdown the computer. After I had replaced my eyeballs back into their sockets, my bro asked if I could do anything about his friend's data, which he wanted back. This, however, drifts out of my normal comfort zone. I know this about the install: 1) It was on a fairly new Windows 8 laptop, so it had whatever filesystem it uses nowadays on the entire drive 2) They didn't choose the "zero out drive data" option 3) They stopped the install at some point (not sure if before or after wipe) I can imagine that it now has two corrupted filesystems on it (whatever Windows 8 was on and ext3) and that some of the data still exists (assuming it wasn't overwritten already). Is there anything that can be done for whatever data is left on the drive?

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• [News] Excursion dans le monde Java d'un (bon) d?veloppeur .NET

  Ayende, l'architecte principal de l'outil NHibernate a d?cid? il y a quelques temps de se former ? JEE pour parfaire ses connaissances. Dans ce billet, qui date de quelques jours, mais qui n'a pas ?t? ?norm?ment relay?, il d?crit son exp?rience. Le constat est assez cinglant et forc?ment emprunt d'une certaine partialit?, mais toujours tr?s int?ressant ? lire : (...) "All in all, I find myself unimpressed by the amount of work that was shuffled to the tools, it doesn?t seem right. And it seems like a justification of a bad practice. When I consider my own design principles (Zero Friction!) in light of this, I am much happier that I am mainly working in the .NET world. But I think that having this understanding is going to be very helpful moving forward"

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• Is there an open source license for this?

  - by Philip

  I have written code at home, on my own time and using my own knowledge and equipment, while under no contract or NDA. I want to make this code open source so that I can use it in software I write for an employer, without denying myself the right to use it at home or elsewhere later. I'm not sure if saying it is in the "public domain" would fit this purpose, or if I need to find an open source license. I want anyone to be able to use the code in closed source proprietary software with zero requirements for including a license with the source or binary. And I want to minimize the risk of anyone being sued for using it. (I'm aware that one can never be 100% safe from being sued.) Is there an open source license that fits this purpose? To what extent is what I want to do even possible? I wouldn't mind putting the license in comments in the code files themselves, but that obviously doesn't go with the binary.

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• How to use Fixedsys in the Gnome Terminal, or wherever monospaced fonts are required

  - by Walter Tross

  I think that the Fixedsys font is one of the most readable monospaced fonts for programming. It has zero antialiasing, with vertical lines mostly 2 pixels wide. Close to ideal for current monitor dot pitches, in my eyes (literally). After years of Windows at home (for family reasons) and Linux servers at work accessed through Cygwin on Windows (for company policy reasons), with Fixedsys as the shell and IDE font, I have decided to switch to the Ubuntu desktop. Eclipse and gedit are no problem, they accept the Fixedsys Excelsior TTF font. But the Gnome Terminal only accepts monospaced fonts. Although Fixedsys Excelsior is essentially monospaced, it contains larger glyphs (mostly for eastern languages), and also some ligatures. Since apparently ALL characters must have the same width for a font to be recognized as monospaced, Fixedsys Excelsior cannot be selected in all those contexts where monospaced fonts are required, including gnome-terminal. So what is the easiest/cleanest way to use a Fixedsys clone font in contexts that only accept monospaced fonts?

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• Settings xorg.conf to be used with VESA driver?

  - by Fernando Costa

  I have an brand new installation of Ubuntu 9.10 (karmic version) where everything is fine except the video resolution. In Ubuntu 9.10, the file xorg.conf is empty by default. I'm using an onboard video card, and Ubuntu can not find the right resolution for me. It always uses 800x600, but I need at least 1024x768. Also, my monitor is listed as Unknown Type. Ubuntu did find the right resolution when I changed the monitor to a Samsung monitor. By the way what are the generic settings to put inside xorg.conf? What is the settings for Refresh Rate, for example, I got a resolution of 1280x800, but the Refresh Rate generally between 60 ~ 80 htz is ZERO on my resolution.. In 1024 resolution my Refresh Rate is 75 htz.. What is going on with my resolution and how to modify the Refresh Rate?? Many Thanks!

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• Switch Gmail Icons Back to Text Labels

  - by Jason Fitzpatrick

  If Gmail’s icon-based buttons annoy you, it’s now possible to switch them back to the old text labels with a simple settings toggle. At MakeUseOf they highlight the new option in Gmail and how you can switch back to the old button layout: So how do you make that happen? All you have to do is click on the cog button, choose “Settings”, and go to the the General tab. Scroll down to find the “Button labels” setting, and change it from icons to text. I know what I’ll be doing shortly; text-based button labels here I come. [via MakeUseOf] Make Your Own Windows 8 Start Button with Zero Memory Usage Reader Request: How To Repair Blurry Photos HTG Explains: What Can You Find in an Email Header?

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• Need Help Changing Owner of External HArd Drive

  - by Thomas Ballew

  My understanding of code is about zero. I can open a terminal window, and type commands that are given to me, but that's about it. If someone can help me with this question, and explain at a level I'm likely to understand, thanks. If not, thanks anyway. I have an external hard drive with two partitions. I bought this drive when my operating system was Apple, 10.5 or so, and it was formatted as HFS+ with that system. Now, connecting the HD to my Linux system, I can read files, but I have about 1.5 TB of space that I can't use, because I am not the owner of the file, so can't write to the HD. Short of reformatting the HD, is there a way for me to set the permissions for the HD so I can write to it? Again, thank you.

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• ATI Proprietary Driver Over/Underscan setting ignored after reboot

  - by Lassi

  I installed the proprietary driver (fglrx-updates) on Ubuntu 12.10 64-bit for my graphics card (ATI Radeon HD 7570). I am using two displays, one connected with DVI, one with HDMI. I set the desktop to be expanded to both screens and disabled the under scan for the HDMI screen, which is always for some reason enabled on HDMI screens. Now the issue. Everything was fine until I restarted my computer. After reboot, the screen connected with HDMI cable had the black borders again, meaning that the under scan is again enabled. I checked the ATI CCC, and under scan was disabled. However, moving the slider to enable under scan and then back to zero fixed the issue -- temporarily. The same issue is repeated every time I restart my computer. The settings remains the same, but the computer seems to ignore it. Any ideas how I could solve the issue?

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• Unable to mount external hard drive

  - by arranjamesroche

  Basically I my 12.10 update crashed halfway through, so I've had to start again and put all my data onto an external HDD. It was all going fine until this came up : Error mounting /dev/sdb1 at /media/amy/CA47-8339: Command-line `mount -t "vfat" -o "uhelper=udisks2,nodev,nosuid,uid=1000,gid=1000,shortname=mixed,dmask=0077,utf8=1,showexec,flush" "/dev/sdb1" "/media/amy/CA47-8339"' exited with non-zero exit status 32: mount: wrong fs type, bad option, bad superblock on /dev/sdb1, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so When I tried to restore my info off the HDD. Now I'm stuck completely clueless as to how I'll get anything off the hard drive.

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• Choice Hotels' Rain Fletcher talks WebLogic Server

  - by ruma.sanyal

  Choice Hotels International's Vice President of Application Development & Architecture, Rain Fletcher, discusses how Oracle WebLogic Server supports their mission-critical reservation system. Choice Hotels has very stringent requirements of their reservation systems servicing over hundred thousand check-in and check-outs every day. The reservation system needs to be up 24X7 and unplanned outages are not acceptable. Choice Hotels chose WebLogic because it is the #1 app server in the marketplace with high uptime, zero downtime deployment, and best in class clustering abilities. Listen to Rain discuss Choice Hotels future plans and how Oracle bestows them with competitive advantage.

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• Is DQS-in-the-cloud on its way?

  - by jamiet

  LinkedIn profiles are always a useful place to find out what's really going on in Microsoft. Today I stumbled upon this little nugget from former SSIS product team member Matt Carroll: March 2012 – December 2012 (10 months)Redmond, WA Took ownership of the SQL 2012 Data Quality Services box product and re-architected and extended it to become a cloud service. Led team and managed product to add dynamic scale, security, multi-tenancy, deployment, logging, monitoring, and telemetry as well as creating new Excel add-in and new ecosystem experience around easily sharing and finding cleansing agents. Personally designed, coded, and unit tested in-memory trigram matching algorithm core to better performance, scale and maintainability. Delivered and supported successful private preview of the new service prior to SQL wide reorganization.  http://www.linkedin.com/profile/view?id=9657184  Sounds as though a Data-Quality-Services-in-the-cloud (which I spoke of as being a useful addition to Microsoft's BI portfolio in my previous blog post Thoughts on Power BI for Office 365 ) might be on its way some time in the future. And what's this SQL wide reorganization? Interesting stuff. @Jamiet  

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• Java - learning / migrating fast

  - by Yippie-Kai-Yay

  Hello! This is not one of those questions like "How do I learn Java extremely fast, I know nothing about programming, but I heard Java is cool, yo". I have an interview for a Java Software Developer in a couple of weeks and the thing is that I think that I know C++ really good and I am somewhat good at C# (like, here I can probably answer on a lot of questions related to these languages), but I have almost zero experience with Java. I have a lot of projects written in both languages, I participiated in several open-source projects (mostly C++, though). Now, what should I do (in your opinion) to prepare myself for this Java interview. I guess migrating from C# to Java should be kind of fast, especially when you know a lot about programming in global, patterns, modern techniques and have a lot of practical experience behind you. But still two weeks is obviously not enough to get Java in-depth - so what should I focus on to have the best chances to pass the interview? Thank you.

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• Learning about security and finding exploits

  - by Jayraj

  First things first: I have absolutely no interest in learning how to crack systems for personal enrichment, hurting other people or doing anything remotely malicious. I understand the basis of many exploits (XSS, SQL injection, use after free etc.), though I've never performed any myself. I even have some idea about how to guard web applications from common exploits (like the aforementioned XSS and SQL injection) Reading this question about the Internet Explorer zero-day vulnerability from the Security SE piqued my curiosity and made me wonder: how did someone even find out about this exploit? What tools did they use? How did they know what to look for? I'm wary about visiting hacker dens online for fear of getting my own system infected (the Defcon stories make me paranoid). So what's a good, safe place to start learning?

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• How to Use Windows 8's Storage Spaces to Mirror & Combine Drives

  - by Chris Hoffman

  “Storage Spaces” is a new feature in Windows 8 that can combine multiple hard drives into a single virtual drive. It can mirror data across multiple drives for redundancy or combine multiple physical drives into a single pool of storage. You can even create pools of storage larger than the amount of physical storage space you have available. When the physical storage fills up, you can plug in another drive and take advantage of it with no additional configuration required. Storage Spaces is similar to RAID or LVM on Linux. The HTG Guide to Hiding Your Data in a TrueCrypt Hidden Volume Make Your Own Windows 8 Start Button with Zero Memory Usage Reader Request: How To Repair Blurry Photos

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