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  • Tracking My Internet Provider Speeds

    - by Scott Weinstein
    Of late, our broadband internet has been feeling sluggish. A call to the company took way more hold-time than I wanted to spend, and it only fixed the problem for a short while. Thus a perfect opportunity to play with some new tech to solve a problem, in this case, documenting a systemic issue from a service provider. The goal – a log a internet speeds, taken say every 15 min. Recording ping time, upload speed, download speed, and local LAN usage.   The solution A WCF service to measure speeds Internet speed was measured via speedtest.net LAN usage was measured by querying my router for packets received and sent A SQL express instance to persist the data A PowerShell script to invoke the WCF service – launched by Windows’ Task Scheduler An OData WCF Data Service to allow me to read the data MS PowerPivot to show a nice viz (scratch that, the beta expired) LinqPad to get the data, export it to excel Tableau Public to show the viz     Powered by Tableau

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  • SQL SERVER – Service Broker and CAP_CPU_PERCENT – Limiting SQL Server Instances to CPU Usage

    - by pinaldave
    I have mentioned several times on this blog that the best part of blogging is the questions I receive from readers. They are often very interesting. The questions from readers give me a good idea what other readers might be thinking as well. After reading my earlier article Simple Example to Configure Resource Governor – Introduction to Resource Governor – I received an email from a reader and we exchanged a few emails. After exchanging emails we both figured out what is going on. It was indeed interesting and reader suggested to that I should blog about it.  I asked for permission to publish his name but he does not like the attention so we will just call him Jeff. I have converted our emails into chat for easy consumption. Jeff: Your script does not work at all. I think either there is a bug in SQL Server. Pinal: Would you please explain in detail? Jeff: Your code does not limit the CPU usage? Pinal: How did you measure it? Jeff: Well, we have third party tools for it but let us say I have limited the resources for Reporting Services and used your script described in your blog. After that I ran only reporting service workload the CPU is still used more than 100% and it is not limited to 30% as described in your script. Clearly something is wrong somewhere. Pinal: Did you say you ONLY ran reporting server load? Jeff: Yeah, to validate I ran ONLY reporting server load and CPU did not throttle at 30% as per your script. Pinal: Oh! I get it here is the answer - CAP_CPU_PERCENT = 30. Use it. Jeff: What is that, I think your earlier script says it will throttle the Reporting Service workload and Application/OLTP workload and balance it. Pinal: Exactly, that is correct. Jeff: You need to write more in email buddy! Just like your blogs, your answers do not make sense! No Offense! Pinal: Hmm…feedback well taken. Let me try again. In SQL Server 2012 there are a few enhancements with regards to SQL Server Resource Governor. One of the enhancement is how the resources are allocated. Let me explain you with examples. Configuration: [Read Earlier Post] Reporting Workload: MIN_CPU_PERCENT=0, MAX_CPU_PERCENT=30 Application/OLTP Workload: MIN_CPU_PERCENT=50, MAX_CPU_PERCENT=100 Example 1: If there is only Reporting Workload on the server: SQL Server will not limit usage of CPU to only 30% workload but SQL Server instance will use all available CPU (if needed). In another word in this scenario it will use more than 30% CPU. Example 2: If there is Reproting Workload and heavy Application/OLTP workload: SQL Server will allocate a maximum of 30% CPU resources to Reporting Workload and allocate remaining resources to heavy application/OLTP workload. The reason for this enhancement is for better utilization of the resources. Let us think, if there is only single workload, which we have limited to max CPU usage to 30%. The other unused available CPU resources is now wasted. In this situation SQL Server allows the workload to use more than 30% resources leading to overall improved/optimized performance. However, in the case of multiple workload where lots of resources are needed the limits specified in MAX_CPU_PERCENT are acknowledged. Example 3: If there is a situation where the max CPU workload has to be enforced: This is a very interesting scenario, in the case when the max CPU workload has to be enforced irrespective of the workload and enhanced algorithm, the keyword CAP_CPU_PERCENT is essential. It specifies a hard cap on the CPU bandwidth that all requests in the resource pool will receive. It will never let CPU usage for reporting workload to go over 30% in our case. You can use the key word as follows: -- Creating Resource Pool for Report Server CREATE RESOURCE POOL ReportServerPool WITH ( MIN_CPU_PERCENT=0, MAX_CPU_PERCENT=30, CAP_CPU_PERCENT=40, MIN_MEMORY_PERCENT=0, MAX_MEMORY_PERCENT=30) GO Notice that there is MAX_CPU_PERCENT=30 and CAP_CPU_PERCENT=40, what it means is that when SQL Server Instance is under heavy load under different workload it will use the maximum CPU at 30%. However, when the SQL Server instance is not under workload it will go over the 30% limit. However, as CAP_CPU_PERCENT is set to 40, it will not go over 40% in any case by limiting the usage of CPU. CAP_CPU_PERCENT puts a hard limit on the resources usage by workload. Jeff: Nice Pinal, you should blog about it. [A day passes by] Pinal: Jeff, it is done! Click here to read it. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: Service Broker

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  • game inventory/bag system javascript html5 game

    - by Tom Burman
    im building an RPG game using html5's canvas and javascript. Its tile based and im using an array to created my game map. I would like the player to have a bag/inventory so when they select or land on a tile that has an item on it, they can click on it and store it in their bag/inventory. I was thinking of using a 2d array to store the value of the item tile, a bit like my map is doing, so when the player lands on, lets say a rope tile which is tileID 4, the value 4 is pushed into the next array position available, then reloop through the array and reprint it to the screen. For an example of what im trying to achieve visually, would be like runescapes inventory, but dumbed down a bit. I appreciate any views and answers. Im not great at javascript coding so please be patient Thanks Tom

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  • “Query cost (relative to the batch)” <> Query cost relative to batch

    - by Dave Ballantyne
    OK, so that is quite a contradictory title, but unfortunately it is true that a common misconception is that the query with the highest percentage relative to batch is the worst performing.  Simply put, it is a lie, or more accurately we dont understand what these figures mean. Consider the two below simple queries: SELECT * FROM Person.BusinessEntity JOIN Person.BusinessEntityAddress ON Person.BusinessEntity.BusinessEntityID = Person.BusinessEntityAddress.BusinessEntityID go SELECT * FROM Sales.SalesOrderDetail JOIN Sales.SalesOrderHeader ON Sales.SalesOrderDetail.SalesOrderID = Sales.SalesOrderHeader.SalesOrderID After executing these and looking at the plans, I see this : So, a 13% / 87% split ,  but 13% / 87% of WHAT ? CPU ? Duration ? Reads ? Writes ? or some magical weighted algorithm ?  In a Profiler trace of the two we can find the metrics we are interested in. CPU and duration are well out but what about reads (210 and 1935)? To save you doing the maths, though you are more than welcome to, that’s a 90.2% / 9.8% split.  Close, but no cigar. Lets try a different tact.  Looking at the execution plan the “Estimated Subtree cost” of query 1 is 0.29449 and query 2 its 1.96596.  Again to save you the maths that works out to 13.03% and 86.97%, round those and thats the figures we are after.  But, what is the worrying word there ? “Estimated”.  So these are not “actual”  execution costs,  but what’s the problem in comparing the estimated costs to derive a meaning of “Most Costly”.  Well, in the case of simple queries such as the above , probably not a lot.  In more complicated queries , a fair bit. By modifying the second query to also show the total number of lines on each order SELECT *,COUNT(*) OVER (PARTITION BY Sales.SalesOrderDetail.SalesOrderID) FROM Sales.SalesOrderDetail JOIN Sales.SalesOrderHeader ON Sales.SalesOrderDetail.SalesOrderID = Sales.SalesOrderHeader.SalesOrderID The split in percentages is now 6% / 94% and the profiler metrics are : Even more of a discrepancy. Estimates can be out with actuals for a whole host of reasons,  scalar UDF’s are a particular bug bear of mine and in-fact the cost of a udf call is entirely hidden inside the execution plan.  It always estimates to 0 (well, a very small number). Take for instance the following udf Create Function dbo.udfSumSalesForCustomer(@CustomerId integer) returns money as begin Declare @Sum money Select @Sum= SUM(SalesOrderHeader.TotalDue) from Sales.SalesOrderHeader where CustomerID = @CustomerId return @Sum end If we have two statements , one that fires the udf and another that doesn't: Select CustomerID from Sales.Customer order by CustomerID go Select CustomerID,dbo.udfSumSalesForCustomer(Customer.CustomerID) from Sales.Customer order by CustomerID The costs relative to batch is a 50/50 split, but the has to be an actual cost of firing the udf. Indeed profiler shows us : No where even remotely near 50/50!!!! Moving forward to window framing functionality in SQL Server 2012 the optimizer sees ROWS and RANGE ( see here for their functional differences) as the same ‘cost’ too SELECT SalesOrderDetailID,SalesOrderId, SUM(LineTotal) OVER(PARTITION BY salesorderid ORDER BY Salesorderdetailid RANGE unbounded preceding) from Sales.SalesOrderdetail go SELECT SalesOrderDetailID,SalesOrderId, SUM(LineTotal) OVER(PARTITION BY salesorderid ORDER BY Salesorderdetailid Rows unbounded preceding) from Sales.SalesOrderdetail By now it wont be a great display to show you the Profiler trace reads a *tiny* bit different. So moral of the story, Percentage relative to batch can give a rough ‘finger in the air’ measurement, but dont rely on it as fact.

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  • What You Said: The Technology You’re Most Thankful For

    - by Jason Fitzpatrick
    Earlier this week we asked you to share the technology you were most thankful for–big or small, old or new–and you responded. Read on to see the tech your fellow readers are thankful to have. Many readers were thankful for the Internet as an entire technological advance. Lee writes: I’d probably have to say the Internet in general, because that has essentially inspired most most of the features in modern technology. Plus, I wouldn’t know nearly as much about tech now if I didn’t have access to the Internet. Jim is especially thankful for the Internet: The Internet. The information I’ve found and people I’ve met, (including my wife), have been life changing. Why Does 64-Bit Windows Need a Separate “Program Files (x86)” Folder? Why Your Android Phone Isn’t Getting Operating System Updates and What You Can Do About It How To Delete, Move, or Rename Locked Files in Windows

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  • How to map network scanner

    - by Andrew Heath
    I have just bought a shiny new Canon MG6250 multifunction printer/scanner and connected it via LAN. Installing the printing side of things was a breeze, however, I cannot work out how to set up scanning. I installed the MG6200 series ScanGear MP driver from Canon's site but when I open GIMP or Simple Scan, they say there is no scanner detected. Using GIMP's 'update scanner list' button to search for the scanner does not find it. How do I tell Ubuntu, GIMP or Simple Scan to look on the network for the scanner? Is there another utility especially for this?

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  • Week 24: Karate Kid Chops, The A-Team Runs, and the OPN Team Delivers

    - by sandra.haan
    The 80's called and they want their movies back. With the summer line-up of movies reminding us to wax on and wax off one can start to wonder if there is anything new to look forward to this summer. The OPN Team is happy to report that - yes - there is. As Hannibal would say "I love it when a plan comes together"! And a plan we have; for the past 2 months we've been working to pull together the FY11 Oracle PartnerNetwork Kickoff. Listen in as Judson tells you more. While we can't offer you Bradley Cooper or Jackie Chan we can promise you an exciting line-up of guests including Safra Catz and Charles Phillips. With no lines to wait in or the annoyingly tall guy sitting in front of you this might just be the best thing you see all summer. Register now & Happy New Year, The OPN Communications Team

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  • SharePoint Saturday Michigan 2010 Recap, Slides, and Photos

    - by Brian Jackett
    This past weekend I attended SharePoint Saturday Michigan (SPSMI) in Ann Arbor, Michigan.  For those unfamiliar, SharePoint Saturday is a community driven event where various speakers gather to present at a FREE conference on all topics related to SharePoint.  This made my third SharePoint Saturday attended and second I’ve spoken at.  I believe today it was announced that about 210 people total attended the event.  I was very happy with the turnout, especially the ratio of male to female attendees.  Typically with computer related conferences the ratio leans towards more males attending, but both Peter Serzo (one of conference organizers) and I both commented to each other that at the end of the day it appeared to be close to 40% women in the crowd.  So here’s my recap of the weekend. Arrival     Friday afternoon I drove up from Columbus, OH to Ann Arbor, MI and arrived around 4pm.  I was attempting to avoid the rush hour traffic and construction backups.  Turned out to be a good idea because other speakers coming up Friday got stuck on a highway which literally closed down in both directions due to a bad accident.  I was talking my friend Sean McDonough through the highway closing and this was the first time I had seen a solid black traffic line on Google Maps.  Most of us are familiar with Green, Yellow, and Red, but this line was black if that tells you how bad it got. Speaker “Dinner”     Fast forward a few hours and it was time for the speaker “dinner.”  I put “dinner” in quotes because with this night alone SPSMI set a new bar for nicest and most extravagant speaker appreciation events for SharePoint Saturday.  By tapping into some very influential contacts, the conference organizers were able to provide a truck limo (yep you heard right) with refreshments, access to an underground suite at the Palace of Auburn Hills, and courtside tickets to see the Detroit Pistons play that night.  Being a Michigan native I have to say that I was absolutely floored by this experience and very thankful to our conference organizers Peter, Sebastian, and Jesse along with Trillium Teamologies. Sessions     The actual conference started Saturday morning at 9am with the keynote by Rob Collie who is the Microsoft program manager for PowerPivot.  The day continued and I attended the following sessions: Mike Watson (@mikewat) – “SharePoint 2010 Fight Night: Devs vs. Admins” Karl Swedeberg (@kswedberg) – “A Walk on the Client Side with jQuery“ [my session] Brian Jackett (@briantjackett) - “Real World Deployment of SharePoint 2007 Solutions” Jeff Willinger (@jwillie) - “Social Computing and Collaboration Inside and Outside the 4 Walls” Paul Schaeflein (@paulschaeflein) – “PowerShell for the SharePoint Developer” My Presentation     I had a great time presenting my session on Deploying SharePoint 2007 Solutions, but it wasn’t without its fair share of technical issues.  As my session was right after lunch I came in to my room 10 mins early to set up my laptop, slides, and demos.  As a quick background note, a few months ago I got an upgraded laptop from my company Sogeti and have been dual booting it between XP (factory installed) and Windows Server 2008 R2 w/ Hyper-V.  As such I had prepared all of my demo virtual machines to run under Hyper-V.  About 3 minutes before my session was scheduled to start though it became apparent that I did not have the correct display drivers to connect Windows Server 2008 R2 to the projector…     As you can imagine this was a slight cause for concern as I was potentially going to be unable to give my presentation.  Luckily for me I usually prepare for such unforeseen issues and had my presentation and some spare VMs that would run on XP on my external hard drive.  Knowing this I rebooted my machine into XP and began my presentation without slides until about 5 mins into the session when everything was up and running on XP.  Despite this being the first time I gave this presentation I have to say it was one of my favorites I’ve given so far.  The audience was very engaged in the session and I received some great, positive feedback afterwards.  Thanks to all who attended my session, I appreciate it very much. Link to Presentation Files     For those of you who attended my session and would like my slides or demo PowerShell scripts they can be found on my SkyDrive at the link below.  Also, if you have a few minutes and wouldn’t mind rating my session I have this session posted on SpeakerRate.  As speakers we always appreciate any and all feedback attendees offer, so thank you if you are able to provide any. SkyDrive folder with session files Rate my SharePoint 2007 Solutions session   Picture Albums     For everyone else, here are my pictures from the weekend.  The first link is to my FaceBook album which will have tagging (recommend this one.)  The second is to my Live album if you care for higher resolution images. http://www.facebook.com/album.php?aid=2154482&id=21905041&l=a3fb72ee8c View Full Album Conclusion     A big thank you goes out to all of the organizers, speakers, sponsors, and attendees of SPSMI.  As I’ve said so many times, without each and every one of you these events wouldn’t be possible.  I thoroughly enjoyed this trip back to my home state and presenting a new session.  For those interested in my upcoming schedule I will be giving two sessions on PowerShell at SharePoint Saturday Charlotte in April, helping plan Stir Trek: Iron Man Edition in May, and I’m submitting sessions to Day of .Net Ann Arbor in May as well.  Beyond that I haven’t planned out any travels.  Thanks for reading my recap.  Look forward to more technical posts now that I have a short break in conferences.         -Frog Out   links: Michigan image

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  • ASP.NET 4 Unleashed in Bookstores!

    - by Stephen Walther
    I’m happy to announce that ASP.NET 4 Unleashed is now in bookstores! The book is over 1,800 pages and it is packed with code samples and tutorials on all the features of ASP.NET 4. Given the size of the book – did I mention that it is over 1,800 pages? -- I can safely say that it is the most comprehensive book on ASP.NET  This edition of the book has several new chapters written by Kevin Hoffman and Nate Dudek. Kevin and Nate did a fantastic job of covering the new features of ASP.NET 4 including: The new ASP.NET Chart Control The new ASP.NET QueryExtender Control The new ASP.NET routing framework jQuery You can buy the book from your local bookstore or buy the book from Amazon:

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  • Change Comes from Within

    - by John K. Hines
    I am in the midst of witnessing a variety of teams moving away from Scrum. Some of them are doing things like replacing Scrum terms with more commonly understood terminology. Mainly they have gone back to using industry standard terms and more traditional processes like the RAPID decision making process. For example: Scrum Master becomes Project Lead. Scrum Team becomes Project Team. Product Owner becomes Stakeholders. I'm actually quite sad to see this happening, but I understand that Scrum is a radical change for most organizations. Teams are slowly but surely moving away from Scrum to a process that non-software engineers can understand and follow. Some could never secure the education or personnel (like a Product Owner) to get the whole team engaged. And many people with decision-making authority do not see the value in Scrum besides task planning and tracking. You see, Scrum cannot be mandated. No one can force a team to be Agile, collaborate, continuously improve, and self-reflect. Agile adoptions must start from a position of mutual trust and willingness to change. And most software teams aren't like that. Here is my personal epiphany from over a year of attempting to promote Agile on a small development team: The desire to embrace Agile methodologies must come from each and every member of the team. If this desire does not exist - if the team is satisfied with its current process, if the team is not motivated to improve, or if the team is afraid of change - the actual demonstration of all the benefits prescribed by Agile and Scrum will take years. I've read some blog posts lately that criticise Scrum for demanding "Big Change Up Front." One's opinion of software methodologies boils down to one's perspective. If you see modern software development as successful, you will advocate for small, incremental changes to how it is done. If you see it as broken, you'll be much more motivated to take risks and try something different. So my question to you is this - is modern software development healthy or in need of dramatic improvement? I can tell you from personal experience that any project that requires exploration, planning, development, stabilisation, and deployment is hard. Trying to make that process better with only a slightly modified approach is a mistake. You will become completely dependent upon the skillset of your team (the only variable you can change). But the difficulty of planned work isn't one of skill. It isn't until you solve the fundamental challenges of communication, collaboration, quality, and efficiency that skill even comes into play. So I advocate for Big Change Up Front. And I advocate for it to happen often until those involved can say, from experience, that it is no longer needed. I hope every engineer has the opportunity to see the benefits of Agile and Scrum on a highly functional team. I'll close with more key learnings that can help with a Scrum adoption: Your leaders must understand Scrum. They must understand software development, its inherent difficulties, and how Scrum helps. If you attempt to adopt Scrum before the understanding is there, your leaders will apply traditional solutions to your problems - often creating more problems. Success should be measured by quality, not revenue. Namely, the value of software to an organization is the revenue it generates minus ongoing support costs. You should identify quality-based metrics that show the effect Agile techniques have on your software. Motivation is everything. I finally understand why so many Agile advocates say you that if you are not on a team using Agile, you should leave and find one. Scrum and especially Agile encompass many elegant solutions to a wide variety of problems. If you are working on a team that has not encountered these problems the the team may never see the value in the solutions.   Having said all that, I'm not giving up on Agile or Scrum. I am convinced it is a better approach for software development. But reality is saying that its adoption is not straightforward and highly subject to disruption. Unless, that is, everyone really, really wants it.

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  • Gigabit and Full-Duplex

    - by jchang
    People still talk about checking if the network is in full-duplex mode even when they are on Gigabit Ethernet. Let me say clearly: Gigabit Ethernet is full-duplex period. There is no half-duplex mode. The same goes for 10 Gigabit Ethernet. If Windows Task Manager says the network Link Speed is 1 or 10 Gbps, don’t bother checking the mode, it can only be full-duplex. In the old days of 10Mbit/sec Ethernet was originally half-duplex. The old 10BASE5 (fat) and 10BASE2 (thin) cable had one signal carrier....(read more)

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  • Mono and GTK#, installing problem with gtk#

    - by user207785
    I've been trying and trying to install gtk# into mono, but I can't seem to install gtk# I've downloaded the tarball, used ./configure, and I get this: Configuration summary Installation prefix = /usr/local C# compiler: /usr/bin/mcs -define:GTK_SHARP_2_6 -define:GTK_SHARP_2_8 -define:GTK_SHARP_2_10 -define:GTK_SHARP_2_12 Optional assemblies included in the build: glade-sharp.dll: no gtk-dotnet.dll: yes Mono.Cairo.dll: using system assembly NOTE: if any of the above say 'no' you may install the corresponding development packages for them, rerun autogen.sh to include them in the build. Documentation build enabled: yes WARNING: The install prefix is different than the monodoc prefix. Monodoc will not be able to load the documentation. Now what? I've been ./autogen.sh - ing like crazy and its not working! Please help! I just want to program in c# with a visual window builder like in c# visual studio...

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  • Chris Brook-Carter at the Oracle Retail Week Awards VIP Reception

    - by user801960
    The Oracle VIP Reception at the Oracle Retail Week Awards last week saw retail luminaries from around the UK and Europe gather to have a drink and celebrate the successes of retail in the last year. Guests included Lord Harris of Peckham, Tesco's Philip Clarke, Vanessa Gold from Ann Summers, former Retail Week editor Tim Danaher, Richard Pennycook from Morrisons and Ian Cheshire from Kingfisher Group. The new Retail Week editor-in-chief, Chris Brook-Carter, attended and took the time to speak to the guests about the value of the Oracle Retail Week Awards to the industry and to thank Oracle for its dedication to supporting the industry. Chris said: "I'd like to say a real heartfelt thanks to our partner this evening: Oracle. I had the privilege of being at the judging day and I got to meet Sarah and the team and I was struck by not only the passion that they have for the whole awards system and everything that means in terms of rewarding excellence within the retail industry but also their commitment to retail in general, and it's that sort of relationship that marks out retail as such a fantastic sector to be involved in." Chris's speech can be watched in full below:

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  • Visual Studio 2010 Professional special launch offer!

    - by Etienne Tremblay
    Hello everyone, long time no blog… I’ll try to get back in the game soon but with 2 customer and user group and life in general let’s just say I’m busy.  In the meantime I’m passing along this great offer. Microsoft Visual Studio 2010 Professional will launch on April 12 but you can beat the rush and secure your copy today by pre-ordering at the affordable estimated retail price of $549, a saving of $250. If you use a previous version of Visual Studio or any other development tool then you are eligible for this upgrade. Along with all the great new features in Visual Studio 2010 (see www.microsoft.com/visualstudio) Visual Studio 2010 Professional includes a 12-month MSDN Essentials subscription which gives you access to core Microsoft platforms: Windows 7 Ultimate, Windows Server 2008 R2 Enterprise, and Microsoft SQL Server 2008 R2 Datacenter. So visit http://www.microsoft.com/visualstudio/en-us/pre-order-visual-studio-2010 to check out all the new features and sign up for this great offer.   Cheers, ET Technorati Tags: VS2010

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  • unable to launch startxfce4 x session --- "startxfce4" not found

    - by Kalpit
    recently i have tried to upgraded ubuntu 12.04 to 14.04 and it got crashed. somehow i upgraded it to 14.04 and now i can able to see login screen. my problem is when i tried to login i am getting error say unable to launch startxfce4 x session --- "startxfce4" not found. i can able to login through command line but not in GUI. i have tried sudo apt-get install xubuntu-desktop but didn't help. can anyone help me to solve this please. Thanks in advance

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  • SQLAuthority News – Why VoIP Service Providers Should Think About NuoDB’s Geo Distribution

    - by Pinal Dave
    You can always tell when someone’s showing off their cool, cutting edge comms technology. They tend to raise their voice a lot. Back in the day they’d announce their gadget leadership to the rest of the herd by shouting into their cellphone. Usually the message was no more urgent than “Hi, I’m on my cellphone!” Now the same types will loudly name-drop a different technology to the rest of the airport lounge. “I’m leveraging the wifi,” a fellow passenger bellowed, the other day, as we filtered through the departure gate. Nobody needed to know that, but the subtext was “look at me everybody”. You can tell the really advanced mobile user – they tend to whisper. Their handset has a microphone (how cool is that!) and they know how to use it. Sometimes these shouty public broadcasters aren’t even connected anyway because the database for their Voice over IP (VoIP) platform can’t cope. This will happen if they are using a traditional SQL model to try and cope with a phone network which has far flung offices and hundreds of mobile employees. That, like shouting into your phone, is just wrong on so many levels. What VoIP needs now is a single, logical database across multiple servers in different geographies. It needs to be updated in real-time and automatically scaled out during times of peak demand. A VoIP system should scale up to handle increased traffic, but just as importantly is must then go back down in the off peak hours. Try this with a MySQL database. It can’t scale easily enough, so it will keep your developers busy. They’ll have spent many hours trying to knit the different databases together. Traditional relational databases can possibly achieve this, at a price. Mind you, you could extend baked bean cans and string to every point on the network and that would be no less elegant. That’s not really following engineering principles though is it? Having said that, most telcos and VoIP systems use a separate, independent solution for each office location, which they link together – loosely.  The more office locations, the more complex and expensive the solution becomes and so the more you spend on maintenance. Ideally, you’d have a fluid system that can automatically shift its shape as the need arises. That’s the point of software isn’t it – it adapts. Otherwise, we might as well return to the old days. A MySQL system isn’t exactly baked bean cans attached by string, but it’s closer in spirit to the old many teethed mechanical beast that was employed in the first type of automated switchboard. NuoBD’s NewSQL is designed to be a single database that works across multiple servers, which can scale easily, and scale on demand. That’s one system that gives high connectivity but no latency, complexity or maintenance issues. MySQL works in some circumstances, but a period of growth isn’t one of them. So as a company moves forward, the MySQL database can’t keep pace. Data storage and data replication errors creep in. Soon the diaspora of offices becomes a problem. Your telephone system isn’t just distributed, it is literally all over the place. Though voice calls are often a software function, some of the old habits of telephony remain. When you call an engineer out, some of them will listen to what you’re asking for and announce that it cannot be done. This is what happens if you ask, say, database engineers familiar with Oracle or Microsoft to fulfill your wish for a low maintenance system built on a single, fluid, scalable database. No can do, they’d say. In fact, I heard one shouting something similar into his VoIP handset at the airport. “I can’t get on the network, Mac. I’m on MySQL.” You can download NuoDB from here. “NuoDB provides the ability to replicate data globally in real-time, which is not available with any other product offering,” states Weeks.  “That alone is remarkable and it works. I’ve seen it. I’ve used it.  I’ve tested it. The ability to deploy NuoDB removes a tremendous burden from our support and engineering teams.” Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL Tagged: NuoDB

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  • Random Between: using random with the instance_create function in GML

    - by CLockeWork
    Hopefully this should be a simple one; I want to restrict the points that instances enter the screen from so they don't come in at the edges. In Game Maker I'm using the following code instance_create(random(room_width), random(-100) - 50, obj_enemy1); to create the instance off screen (create(x, y, ...)) At the moment I'm just using the room_width to define the max width for the random on x, but ideally I want to find a way of defining a max AND min width for the random. I can't figure out how to restrict the range on the x axis to between say 100 and 350. Any help would be appreciated. Cheers

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  • Syntax Recognition for XML-Based Languages in Oracle JDeveloper

    - by Ramkumar Menon
      @Thanks Jeffrey Stephenson If you are looking at using any one of the new XML Based languages, lets say a docbook xml, or xproc, or what not, you can make use of JDeveloper's syntax highlighting and completion insight feature to ease out those extra keystrokes. All you need is a URL/local copy of the XML Schema for the language. Once you have, you can register it via Tools --> Preferences --> XML Schemas.   Remember to provide a new extension name [Using a default .xml extension did not work for me.] I provided my own extension .dbk for my docbook files. Once you save these settings, you can create new files that conform to the schema, and you get validation/completion insight/prompting for free.      

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  • Refresh bounded taskflows across regions using InputParameters

    - by raghu.yadav
    Usecase1 : Selecting record from table in left region reflects dependent detail form of same table in right region using InputParameters Here is the example given by Andre Example Three important crux to be known from above example. 1) create primary key attribute in pagedef of the table in region1 2) add inputparameter name in taskflow inputparameters of region2 3) bind primary key attribute from page definition to above inputparameters in main page where above 2 regions dropped. UseCase2 : Selecting record from location table in left region reflects corresponding department records from department table in right regions. 1) create bind variable on location id in departmentVO. 2) create inputparameter say LocationParam, with type Number, value as #{pageFlowScope.LocationParam} 3) assign LocationId param from pagedef to LocationParam in taskflow2 4) create ExecuteWithParam action in region2 pagedef and invoke the same on IfRefresh condition. during run time - steps executes in backwards (3,2,1)..i,e as user selects column in location table, it assigns location from pagedef to locationParam and then to PageFlowScope and from there to view criteria.

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  • Tokenizing JavaScript: A look at what’s left after minification

    - by InfinitiesLoop
    Minifiers JavaScript minifiers are popular these days. Closure , YUI Compressor , Microsoft Ajax Minifier , to name a few. Using one is essential for any site that uses more than a little script and cares about performance. Each tool of course has advantages and disadvantages. But they all do a pretty good job. The results vary only slightly in the grand scheme of things. Not enough to make so much of a difference that I’d say you should always use one over the other – use whatever fits in with your...(read more)

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  • Rejuvenated: Script Creates and Drops for Candidate Keys and Referencing Foreign Keys

    - by Adam Machanic
    Once upon a time it was 2004, and I wrote what I have to say was a pretty cool little script . (Yes, I know the post is dated 2006, but that's because I dropped the ball and failed to back-date the posts when I moved them over here from my prior blog space.) The impetus for creating this script was (and is) simple: Changing keys can be a painful experience. Sometimes you want to make a clustered key nonclustered, or a nonclustered key clustered. Or maybe you want to add a column to the key. Or remove...(read more)

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  • SQLBits - Unicode Porn

    - by Most Valuable Yak (Rob Volk)
    We've just finished up a fantastic event at SQLBits X in London!  If you've never been to SQLBits and you can make it to the UK, I highly recommend it.  If you didn't attend, here's what you missed. Meanwhile, for those who attended the Lightning Talk sessions and were disappointed that I ran out of time, here's the last part that you would have seen: /*    How to Lose Friends and Irritate People...With Unicode!     Rob Volk     SQLBits X - London - March 31, 2012 */ -- some sexy SQL DECLARE @oohbaby TABLE(i INT NOT NULL UNIQUE, uni_char AS NCHAR(i), hex AS CAST(i AS BINARY(2))) INSERT @oohbaby VALUES(664),(1022),(1023),(1120),(1150),(8857),(11609),(42420),(42427) -- change results font to larger size, some only work in grid font SELECT * FROM @oohbaby SELECT NCHAR(1022) + NCHAR(1023) AS Page3Girl It's probably better that you run this yourself, in the privacy of your own home/office, you know *wink* *wink* *nudge* *nudge* *say no more*

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  • Introducing SQLPeople - the Blog Series!

    - by andyleonard
    Introduction The first 50.5 weeks of 2010 have been interesting, to say the least. My experiences in 2010 can best be summed up in a single word: educational. I've learned a lot this year! One important thread wove its way through my 2010 experiences... Relationships Are Everything How we interact defines community. Relationships define community. Our community is more than the sum of our members. Trust and respect are the capital of community. And just like money, this capital can be invested, exchanged,...(read more)

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  • OpenGL ES 2.0: Using VBOs?

    - by Bunkai.Satori
    OpenGL VBOs (vertex buffer objects) have been developed to improve performance of OpenGL (OpenGL ES 2.0 in my case). The logic is that with the help of VBOs, the data does not need to be copied from client memory to graphics card on per frame basis. However, as I see it, the game scene changes continuously: position of objects change, their scaling and rotating change, they get animated, they explode, they get spawn or disappear. In such highly dynamic environment, such as computer game scene is, what is the point of using VBOs, if the VBOs would need to be constructed on per-frame basis anyway? Can you please help me to understand how to practically take beneif of VBOs in computer games? Can there be more vertex based VBOs (say one per one object) or there must be always exactly only one VBO present for each draw cycle?

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  • How do I pipe terminal standard output (stdout) to the clipboard?

    - by Insperatus
    For example, Say I want to list the contents of a folder and directly paste them into a chat window for a friend to see. I realize I could do ls > filename.txt to create a file (filename.txt) with those contents; I'd then have to open or print the file and manually select and copy the text block (which can be annoying/tedious.) I clearly could also select and copy the output of ls directly from within the terminal window. It would be much faster/easier to simply pipe standard output to the clipboard. What terminal command allows me to do this?

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