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  • Are We Losing a Standard (Edition) Data Recovery Technology?

    - by AllenMWhite
    One of the coolest technologies Microsoft released with SQL Server 2005 was Database Mirroring, which provided the ability to have a failover copy of a database on another SQL Server instance, and have the ability to automatically failover to that copy should a problem occur with the primary database. What was even cooler was that this new technology was available on Standard Edition! Mom and Pop shops could afford to implement a high availability solution without paying an extra tens of thousands...(read more)

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  • How to avoid oscillation by async event based systems?

    - by inf3rno
    Imagine a system where there are data sources which need to be kept in sync. A simple example is model - view data binding by MVC. Now I intend to describe these kind of systems with data sources and hubs. Data sources are publishing and subscribing for events and hubs are relaying events to data sources. By handling an event a data source will change it state described in the event. By publishing an event the data source puts its current state to the event, so other data sources can use that information to change their state accordingly. The only problem with this system, that events can be reflected from the hub or from the other data sources, and that can put the system into an infinite oscillation (by async or infinite loop by sync). For example A -- data source B -- data source H -- hub A -> H -> A -- reflection from the hub A -> H -> B -> H -> A -- reflection from another data source By sync it is relatively easy to solve this issue. You can compare the current state with the event, and if they are equal, you don't change the state and raise the same event again. By async I could not find a solution yet. The state comparison does not work by async event handling because there is eventual consistency, and new events can be published in an inconsistent state causing the same oscillation. For example: A(*->x) -> H -> B(y->x) -- can go parallel with B(*->y) -> H -> A(x->y) -- so first A changes to x state while B changes to y state -- then B changes to x state while A changes to y state -- and so on for eternity... What do you think is there an algorithm to solve this problem? If there is a solution, is it possible to extend it to prevent oscillation caused by multiple hubs, multiple different events, etc... ? update: I don't think I can make this work without a lot of effort. I think this problem is just the same as we have by syncing multiple databases in a distributed system. So I think what I really need is constraints if I want to prevent this problem in an automatic way. What constraints do you suggest?

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  • "BAD ARCHIVE MIRROR" error while installing ubuntu server 12.04

    - by Hirdesh - Technonimal
    I downloaded the server version of Ubuntu from Ubuntu's official site. Created a Bootable USB from the ISO file I downloaded. I connected through Internet using DHCP in the installation process. While I was installing it on my Desktop Computer (pentium D 1 GB RAM) I have this error "Bad Archive Mirror". I also found 2-3 questions with same problem on forum but I didn't get solution of my problem from them.

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  • New Exadata Customer Cases

    - by Javier Puerta
    New reference stories available for Exadata: Procter & Gamble Completes Point-of-Sale Data Queries up to 30 Times Faster, Reduces IT Costs, and Improves Insight with Engineered Data Warehouse Solution ZLM Verzekeringen Improves Customer Service with Integrated Back-Office Environment on Exadata KyivStar, JSC Reduces Storage Volumes to 15% of Its Legacy Environment and Increases System Productivity by 500% with High-Performance IT Infrastructure GfK Group Retail and Technology ensures Successful Growth with Exadata Consolidation

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  • Reading input all together or in steps?

    - by nischayn22
    For many programming quizzes we are given a bunch of input lines and we have to process each input , do some computation and output the result. My question is what is the best way to optimize the runtime of the solution ? Read all input, store it (in array or something) ,compute result for all of them, finally output it all together. or 2. Read one input, compute the result, output the result and so on for each input given.

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  • Fans running very fast on MacBook Pro 8.1 ubuntu 12.04

    - by Tomasz Kacprzak
    I installed Ubuntu 12.04 on Macbook Pro 8.1 and one of the first things I noticed was that the fans were starting to spin very fast every few minutes for 10-30 sec and then going back to normal. That was happening even without any processor load, when completely idle. The fans were usually spinning at 4000 RPM and made much noise. The computer was not getting hotter than usual. When running OSX Lion there was no noise at all, fans almost all the time at 2000 RPM. I spent some time on it and found out that Precise uses a deamon to control the temperature, called macfanctld. You can use /etc/macfanctld.conf to set the configuration. I found out that the high fan speed is not due to the fact that the temperature is getting hot, but because there are two sensors which indicate wrong numbers (you can check that using 'sensors' command ): TW0P: +129.0°C TCTD: +256.0°C TCFC: +0.0°C TMBS: +0.0°C or setting the macfanctld log level to 2: Speed: 4992, *AVG: 56.9C, TC0P: 50.2C, TG0P: 51.5C, Sensors: TB0T:34 TB1T:34 TB2T:33 TC0C:58 TC0D:56 TC0E:59 TC0F:60 TC0P:50 TC1C:58 TC2C:58 TC3C:58 TC4C:57 TCFC:0 TCGC:57 TCSA:53 TCTD:256 TG0D:52 TG0P:52 THSP:42 TM0S:64 TMBS:0 TP0P:54 TPCD:60 TW0P:129 Th1H:51 Th2H:48 Tm0P:40 Ts0P:32 Ts0S:43 Moreover, TCTD was randomly jumping from temperatures of 0 to 256, so this may be the reason for unjustified random fan speeds. macfanctld is taking an average of the sensors including the values above, so the actual AVG temp used to control the fans is wrong, usually biased up, hence high RPM and noise. The workaround solution is to use an option in the macfanctld.conf which allows to ignore the malfunctioning sensors: exclude: 13 16 21 24 After reboot the reported temperatures are usually normal and the fans are working at reasonable speeds. I tested the response of the fans to heavy processor load by asking MATLAB to invert 10000x10000 matrix and the AVG temperature jumped to 63deg, and the fan to max 6200 RPM and then got it back to normal temperature. So I think it is safe so far. There is a expired bug about the failing sensor readings: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/955538 which may be good to open again. My question would be: does anyone know what the failing sensors do and if there is any danger in excluding them? Maybe some better solution to this problem?

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  • Error Message when starting Update: Failed to load the package list

    - by George
    Message says: Failed to load the package list This is a serious problem. Try again later. If this problem appears again, please report an error to the developers. Click details, which says: E:Type 'http://ppa.launchpad.net/madman2k/ubuntu' is not known on line 61 in source list /etc/apt/sources.list Tried this solution: sudo rm /var/lib/apt/lists/* -vf sudo apt-get update However, when entering the first command, it hits back an error: rm: cannot remove `/var/lib/apt/lists': Is a directory

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  • Solving the SQL Server Multiple Cascade Path Issue with a Trigger

    This tip will look at how you can use triggers to replace the functionality you get from the ON DELETE CASCADE option of a foreign key constraint. Keep your database and application development in syncSQL Connect is a Visual Studio add-in that brings your databases into your solution. It then makes it easy to keep your database in sync, and commit to your existing source control system. Find out more.

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  • CUPS Authentication for Admin on localhost:631 interface

    - by Tony Kruse
    I have searched quite a bit, saw the one response that purported to have a solution to this but it did not work in my case. My Brother printer is not shown in CUPS so I go to Admin-Add Printer it gives me the User Name/Password popup with refuses to recognize my user name on the machine. This is a brand new install of 13.1. My Restrict Access to the admin pages section has: Order allow, deny Allow localhost

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  • F# Project Euler Problem 1

    - by MarkPearl
    Every now and then I give project Euler a quick browse. Since I have been playing with F# I have found it a great way to learn the basics of the language. Today I thought I would give problem 1 an attempt… Problem 1 If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23. Find the sum of all the multiples of 3 or 5 below 1000. My F# Solution I broke this problem into two functions… 1) be able to generate a collection of numbers that are multiples of a number but but are smaller than another number. let GenerateMultiplesOfXbelowY X Y = X |> Seq.unfold (fun i -> if (i<Y) then Some(i, i+X) else None) I then needed something that generated collections for multiples of 3 & 5 and then removed any duplicates. Once this was done I would need to sum these all together to get a result. I found the Seq object to be extremely useful to achieve this… let Multiples = Seq.append (GenerateMultiplesOfXbelowY 3 1000) (GenerateMultiplesOfXbelowY 5 1000) |> Seq.distinct |> Seq.fold(fun acc a -> acc + a) 0 |> Console.WriteLine |> Console.ReadLine My complete solution was … open System let GenerateMultiplesOfXbelowY X Y = X |> Seq.unfold (fun i -> if (i<Y) then Some(i, i+X) else None) let Multiples = Seq.append (GenerateMultiplesOfXbelowY 3 1000) (GenerateMultiplesOfXbelowY 5 1000) |> Seq.distinct |> Seq.fold(fun acc a -> acc + a) 0 |> Console.WriteLine |> Console.ReadLine   Which seemed to generate the correct result in a relatively short period of time although I am sure I will get some comments from the experts who know of some intrinsic method to achieve all of this in one method call.

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  • Chrome not accepting international dead keys 14.04

    - by D3L
    Every other application on 14.04 accepts that I have selected US international with dead keys as my keyboard layout option, and accepts text input as it should. Chrome however fails to recognise what keyboard I have set in system settings and blindly uses "US keyboard". Looking for a solution to force Chrome to accept dead key input. AFAIK it used to work, but something has messed up recently with updates to Chrome

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  • Print Problem in Ubuntu 10.10

    - by Michael
    There are many different Print dialogs but one is very common and is used by Gimp, Shutter, Evloution and Simple Scan. In all these apps the "Page Size" and "Orientation" are disabled. The same dialog in Firefox, Thunderbird and GEdit works OK. I program in Gambas3 which uses this dialog in conjunction with the GTK+ library and it also has these options disabled. If I use the QT4 library then a different print dialog is displayed with no problems. Anybody else notice this problem and found a solution?

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  • SQL in the City - Boston 2012

    A free day of training in Boston on Oct 8, 2012. Come join Grant Fritchey, Steve Jones and more to talk about SQL Server and how you can work more efficiently. Keep your database and application development in syncSQL Connect is a Visual Studio add-in that brings your databases into your solution. It then makes it easy to keep your database in sync, and commit to your existing source control system. Find out more.

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  • Google réunit ses solutions de paiement électroniques Wallet et Checkout en un seul produit pour Web et mobile

    Google réunit ses solutions de paiement électroniques Wallet et Checkout En un seul produit pour Web et mobile Google entend fusionner Checkout et Wallet, ses deux solutions de paiement électronique en les consolidant en un seul service pour Web et pour mobile. C'est la marque Google Wallet (Google Portefeuille) qui représentera le service unifié. Il s'agissait avant cette annonce d'une solution mobile permettant de payer en magasin en passant son Smartphone à proximité d'une caisse compatible. Checkout...

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  • Provisioning a New SQL Server Instance – Part Two

    So how should you install and configure SQL Server 2012 properly? Glenn Berry completes his two-part series by explaining the steps needed to complete the preparation and do the actual installation. Keep your database and application development in syncSQL Connect is a Visual Studio add-in that brings your databases into your solution. It then makes it easy to keep your database in sync, and commit to your existing source control system. Find out more.

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  • Free Hosting With these specs [closed]

    - by blunders
    Possible Duplicate: How to find web hosting that meets my requirements? Looking for to make a quick site and have the following requirements: It's free No ADs, frames, etc Support for directory/site password Allow web-based or FTP file transfer Allows 100 MB to 1 GB of storage custom short URL or sub-domain Realize this might be very narrow, but figured I'd ask just in case there was a good solution.

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  • How to hide the admin login form?

    - by John Doe
    In my website there are no accounts except for those of moderators and administrators. That's why I don't want to show the login form to everyone but to these people. I thought of using a weird URL for the login form like www.example.com/1a79a4d60de6718e8e5b326e338ae533 that only admins and mods would know. But it's a quite impractical solution, besides if someone would want to login in another computer and forgets this URL, then is unable to. Is there any more effective way?

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  • Sybase adapte Android aux besoins de l'entreprise en intégrant des fonctions de sécurité sur les appareils mobiles de Samsung

    Sybase adapte Android aux besoins de l'entreprise En intégrant des fonctions de sécurité sur les appareils mobiles de Samsung C'est depuis le Mobile World Congress de Barcelone que Sybase, filiale de SAP et expert des solutions logicielles, a annoncé qu'il allait fournir sa solution Afaria AES (Advanced Enterprise Security) aux terminaux professionnels de Samsung tournant sous Android. Sybase intégrera ainsi des fonctions de sécurité et de gestion des applications supplémentaires à l'OS mobile de Google sur les Galaxy S et Galaxy S II. « L'engouement pour les appareils Android, tels que les nouveaux téléphones Samsung Galaxy, pose un véritable dilemme aux...

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  • Is this an effective monetization method for an Android game? [on hold]

    - by Matthew Page
    The short version: I plan to make an Android puzzle game where the user tries to get 3-6 numbers to their predetermined goal numbers. The free version of the app will have three predetermined levels (easy, medium, hard). The full version ($0.99, probably) will have a level generator where there will be unlimited easy, medium, or hard levels, as well as a custom difficulty option where users can set specific vales to the number of numbers to equate to their goal, the number of buttons to use, etc. Users will also have the option to get a one-time "hint" for a fee of $0.49, or unlimited hints for a one-time fee of $2.99. The long version: Mechanics of Game and Victory The application is a number puzzle. When the user begins a new game, depending on the input by the user, between 3 and 6 numbers show up on the top of the screen, and between 3 and 6 buttons show up on the bottom of the screen. The buttons all have two options: to increase every number the same way, or decrease every number the same way. The buttons either use addition / subtraction, multiplication / division, or exponents / roots, all depending on the number displayed on the button. Addition buttons are green, multiplication buttons are blue, and exponential buttons are red. The user wins when all of the numbers displayed on the screen equate to their goal number, displayed below each number. Monetization If the user is playing the full (priced) version of the app, upon the start of the game, the user will be confronted with a dialogue asking for the number of buttons and the number of numbers to equate in the game. Then, based on the user input, a random puzzle will be generated. If the user is playing the free version of the app, the user will be asked to either play an “easy”, “hard”, or “expert” puzzle. A pre-determined puzzle from each category will be used in the game. If the user has played that puzzle before, a dialogue will show saying this to the user and advertising the full version of the app. The full version of the app will also be advertised upon the successful or in successful completion of a puzzle. Upon exiting this advertisement, another full screen advertisement will appear from a third party. Also, the solution to the puzzle should be stored by the program, and if the user pays a small fee, he/she can see a hint to the solution to the program. In the free version of the app, the user may use their first hint for free. Also, the user can use unlimited hints for a slightly larger fee. Is this an effective monetization method?

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  • How to specify importance of html elements?

    - by Julien Fouilhé
    Is it possible to specify what elements of the page are important, or, more specifically, what elements of the page are not important? I'm using HTML5 new elements (nav, header, footer, section, article, aside...), but in the description of the website, there's sometimes my login form (in the header of my page though) in the Google description of my website pages... Is there a solution to resolve this problem? Thank you.

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  • MS SQL Sever 2012 Launch, New Idera Release

    Idera, a Microsoft Managed Partner and Houston-based provider of tools that specialize in the management and administration of Microsoft SQL Server, PowerShell, and SharePoint, recently announced the release of Idera SQL safe 7.0. The latest version of the SQL Server backup and recovery solution comes equipped with various improvements which are highlighted by the company's innovative Instant Restore technology. The release adds to Idera's impressive stable of products that has earned it over 10,000 customers across the globe since its inception. The Instant Restore technology integrated in ...

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  • restricting acces to sites with squid and elinks

    - by Rexxar
    I want to block in elinks the yahoo sites(www.yahoo.com and all his subdomains fr.yahoo.com etc). I tried with squid(squid.conf): acl Badsites dstdomain .yahoo.com http_acces deny Badsites and i wrote in elinks.conf: set.protocol.http.proxy.host = "proxy.host:3128" set.protocol.http.proxy.user = "" set.protocol.http.proxy.passwd = "" and it dosent work. it tells me Host not found on every site i whant to enter. DO you have any idee why it works that way and can you tell me a solution?

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