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  • Top 10 Transact-SQL Statements a SQL Server DBA Should Know

    Microsoft SQL Server is a feature rich database management system product, with an enormous number of T-SQL commands. With each feature supporting its own list of commands, it can be difficult to remember them all. MAK shares his top 10 T-SQL statements that a DBA should know. Join SQL Backup’s 35,000+ customers to compress and strengthen your backups "SQL Backup will be a REAL boost to any DBA lucky enough to use it." Jonathan Allen. Download a free trial now.

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  • Ubuntu 12.04 shut down freezes

    - by sam
    I am using Ubuntu 12.04 for last one month without any problem. It was upgraded from Ubuntu 10.10. Recently I needed to replace my hard disk. After replacement I installed Windows 7 and Ubuntu 12.04 on the system. For some days it went ok, but now shutting down from Ubuntu is causing problems. It freezes on the text screen saying acpid=exiting checking for running unattended upgrades. After that I waited for a long time, but it didn't go off and I had to hit ctrl+alt+del to restart the system and booting from Windows and then shutting down from there. This happens every time I shut down my system from Ubuntu. I have seen many posts regarding the same kind of issues but none of the solutions reported there helped me out.

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  • Do you count a Masters in CS as a negative? [closed]

    - by Pete Hodgson
    In my experience interviewing developers I feel like candidates who've achieved a Masters in Comp Sci tend to be worse programmers on average that those who don't have a Masters. Is that just me, or have others noticed this phenomenon? If so, why would that be the case? UPDATE I appreciate the thoughtful comments. I think I should have been clearer in the comparison I'm making. Given two candidates who graduated from college around the same time, someone who went on to gain a Masters seems on average to be a worse programmer than someone who spent all their time in industry.

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  • Vendors: Partners or Salespeople?

    - by BuckWoody
    I got a great e-mail from a friend that asked about how he could foster a better relationship with his vendors. So many times when you work with a vendor it’s more of a used-car sales experience than a partnership – but you can actually make your vendor more of a partner, as long as you both set some ground-rules at the start. Sit down with your vendor, and have a heart-to-heart talk with them, explain that they won’t win every time, but that you’re willing to work with them in an honest way on both sides. Here’s the advice I sent him verbatim. I hope this post generates lots of comments from both customers and vendors. I don’t expect that you’ve had a great experience with your Microsoft reps, but I happen to work with some of the best sales teams in the business, and our clients tell us that all the time. “The key to this relationship is to keep the audience really small. Ideally there should be one person from your side that is responsible for the relationship, and one from the vendor’s side. Each responsible person should have the authority to make decisions, and to bring in other folks as needed for a given topic, project or decision.   For Microsoft, this is called an “Account Manager” – they aren’t technical, they aren’t sales. They “own” a relationship with a company. They learn what the company does, who does it, and how. They are responsible to understand what the challenges in your company are. While they don’t know the bits and bytes of everything we sell, they know what each thing does, and who to talk to about it. I get a call from an Account Manager every week that has pre-digested an issue at an organization and says to me: “I need you to set up an architectural meeting with their technical staff to get a better read on how we can help with problem X.” I do that and then report back to the Account Manager what we learned.  All through this process there’s the atmosphere of a “team”, not a “sales opportunity” per se. I’ve even recommended that the firm use a rival product, and I’ve never gotten push-back on that decision from my Account Managers.   But that brings up an interesting point. Someone pays an Account Manager and pays me. They expect something in return. At some point, you have to buy something. Not every time, not every situation – sometimes it’s just helping you with what you already bought from us. But the point is that you can’t expect lots of love and never spend any money. That’s the way business works.   Finally, don’t view the vendor as someone with their hand in your pocket – somebody that’s just trying to sell you something and doesn’t care if they ever see you again – unless they deserve it. There are plenty of “love them and leave them” companies out there, and you may have even had this experience with us, but that isn’t the case in the firms I work with. In fact, my customers get a questionnaire that asks them that exact question. “How many times have you seen your account team? Did you like your interaction with them? Can they do better?” My raises, performance reviews and general standing in my group are based on the answers the company gives.  Ask your vendor if they measure their sales and support teams this way – if not, seek another vendor to partner with.   Partnering with someone is a big deal. It involves time and effort on your part, and on the vendor’s part. If either of you isn’t pulling your weight, it just won’t work. You have every right to expect them to treat you as a partner, and they have the same right for your side.” Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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  • 500.50 error using URL Rewrite

    I ran into a 500.50 error yesterday, which wasnt very descriptive initially, so I thought I would provide some details on what it could be. First, off, if you hit the page remotely, its going to hide the real details.  It will look something like this: Server Error 500 - Internal server error. There is a problem with the resource you are looking for, and it cannot be displayed. Checking the IIS logs will show that its a 500.50 error in this case. The first thing to do after running into...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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  • Ask the Readers: The Two-Step Login Verification Process – Security Boost or Just Another Hassle?

    - by Asian Angel
    Google recently introduced a new optional two-step login verification process for Google accounts to help increase account security. What we would like to know this week is if you think this will really help improve account security, should be implemented by others in addition to Google, or would simply add a new layer of hassle to using your accounts Latest Features How-To Geek ETC How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware How to Change the Default Application for Android Tasks Stop Believing TV’s Lies: The Real Truth About "Enhancing" Images The Legend of Zelda – 1980s High School Style [Video] Suspended Sentence is a Free Cross-Platform Point and Click Game Build a Batman-Style Hidden Bust Switch Make Your Clock Creates a Custom Clock for your Android Homescreen Download the Anime Angels Theme for Windows 7 CyanogenMod Updates; Rolls out Android 2.3 to the Less Fortunate

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  • Approaching SICP in Clojure instead of Scheme

    - by ironicaldiction
    I am a third year bachelor student in a software engineering program, and I brought up the idea of reading SICP to an adviser to gain a deeper and more fundamental understanding of the principles behind all this software we engineer. He suggested not to learn Scheme to complete the book (because it's not as common as modern dialects of Lisp) but to do the exercises in Clojure instead. It's an already difficult book, if I do attempt the book's exercises in the more modern Clojure, how would that work? For example, I can't find any real solutions, the syntax they teach for Scheme is different, etc.

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  • Why do HDFS clusters have only a single NameNode?

    - by grautur
    I'm trying to understand better how Hadoop works, and I'm reading The NameNode is a Single Point of Failure for the HDFS Cluster. HDFS is not currently a High Availability system. When the NameNode goes down, the file system goes offline. There is an optional SecondaryNameNode that can be hosted on a separate machine. It only creates checkpoints of the namespace by merging the edits file into the fsimage file and does not provide any real redundancy. Hadoop 0.21+ has a BackupNameNode that is part of a plan to have an HA name service, but it needs active contributions from the people who want it (i.e. you) to make it Highly Available. from http://wiki.apache.org/hadoop/NameNode So why is the NameNode a single point of failure? What is bad or difficult about having a complete duplicate of the NameNode running as well?

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  • setup dhcp server - "Job failed to start"

    - by jdicarreira
    I have an eth0 and eth1, eth0 has dynamic ip and on eth1 i setup static ip: auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp auto eth1 iface eth1 inet static address 10.10.0.1 netmask 255.0.0.0 gateway 10.10.0.1 ` and then i setup the "isc-dhcp-server" with the fowling command: INTERFACES="eth1" Finally... I went to this one "dhcpd.conf", with the fowling comand: default-lease-time 650; max-lease-time 79520; option subnet-mask 255.0.0.0; option broadcast-address 10.10.0.255; option routers 10.10.0.2; subnet 10.10.0.0 netmask 255.0.0.0 { range 10.10.0.10 10.10.0.250; } When I try to "sudo /etc/init.d/isc-dhcp-server start", I get "start: Job failed to start" Anyone knows whats wrong? :/

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  • New ZFS Encryption features in Solaris 11.1

    - by darrenm
    Solaris 11.1 brings a few small but significant improvements to ZFS dataset encryption.  There is a new readonly property 'keychangedate' that shows that date and time of the last wrapping key change (basically the last time 'zfs key -c' was run on the dataset), this is similar to the 'rekeydate' property that shows the last time we added a new data encryption key. $ zfs get creation,keychangedate,rekeydate rpool/export/home/bob NAME PROPERTY VALUE SOURCE rpool/export/home/bob creation Mon Mar 21 11:05 2011 - rpool/export/home/bob keychangedate Fri Oct 26 11:50 2012 local rpool/export/home/bob rekeydate Tue Oct 30 9:53 2012 local The above example shows that we have changed both the wrapping key and added new data encryption keys since the filesystem was initially created.  If we haven't changed a wrapping key then it will be the same as the creation date.  It should be obvious but for filesystems that were created prior to Solaris 11.1 we don't have this data so it will be displayed as '-' instead. Another change that I made was to relax the restriction that the size of the wrapping key needed to match the size of the data encryption key (ie the size given in the encryption property).  In Solaris 11 Express and Solaris 11 if you set encryption=aes-256-ccm we required that the wrapping key be 256 bits in length.  This restriction was unnecessary and made it impossible to select encryption property values with key lengths 128 and 192 when the wrapping key was stored in the Oracle Key Manager.  This is because currently the Oracle Key Manager stores AES 256 bit keys only.  Now with Solaris 11.1 this restriciton has been removed. There is still one case were the wrapping key size and data encryption key size will always match and that is where they keysource property sets the format to be 'passphrase', since this is a key generated internally to libzfs and to preseve compatibility on upgrade from older releases the code will always generate a wrapping key (using PKCS#5 PBKDF2 as before) that matches the key length size of the encryption property. The pam_zfs_key module has been updated so that it allows you to specify encryption=off. There were also some bugs fixed including not attempting to load keys for datasets that are delegated to zones and some other fixes to error paths to ensure that we could support Zones On Shared Storage where all the datasets in the ZFS pool were encrypted that I discussed in my previous blog entry. If there are features you would like to see for ZFS encryption please let me know (direct email or comments on this blog are fine, or if you have a support contract having your support rep log an enhancement request).

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  • Isolated Storage Made Easy

    In its most simple form Isolated Storage allows you to save name value pairs and retrieve them at some other time the next time your app runs. Granted we could get into XML and text files etc but I'm going to stick with just name value pairs. Lets take a look at this line:private void PresistKeyValue(string _Key, string _Value){StreamWriter MyWriter = new StreamWriter(new IsolatedStorageFileStream(_Key, FileMode.Create, IsolatedStorageFile.GetUserStoreForApplication()));MyWriter.Write(_Value);MyWriter.Close();}Nice...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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  • Does Submit to Index on a page with new content update Content Keywords for the site?

    - by Dan Kanze
    Using Google Webmaster Tools I'm trying to update the Content Keywords of my site. I'm confused about the relationship between Submit to Index and Content Keywords Does Fetch as Google -- Submit to Index on a previously existing indexed page containing new content expidite updating the Content Keywords crawled by the real Google bot? Does Submit to Index only submit new URL's so that previously indexed URL's still point to the older cached version until Google crawls specifically for new content on its own? Does Submit to Index have anything to do with Content Keywords or crawling new content being a previously indexed page or never been indexed page?

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  • Distance Education in Computer Science - HCI

    - by Rionmonster
    I have been a software engineer / graphic designer for a few years and have recently been considering furthering my education in the field. (It was actually a very generous Christmas present) I would primarily be interested in something like Human Computer Interaction or a similar "creative technology" that involves heavy UI/UX Design, prototyping or Information Architecture. Anyways - I still plan on working full-time and was looking into part-time distance programs and was wondering if anyone had some experience with pursuing a similar degree (either from a distance or in-person) and could share their experiences. Thanks!

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  • Ubuntu 12.04 - Swiching Multiple Windows from a Program

    - by Judy Liu
    I'm having problem switching multiple windows from a same program. For example, if I have 2 windows opened for firefox at the same time and I wanted to switch from one another, it used to display a 2 small grid preview for each session when I click on the icon. However, that function doesn't seem to be working on my ubuntu 12.04 now. It doesn't response when I click on the firefox (or other application) icon in the sidebar. Does anyone know how to fix this? By the way, I know ALT-TAB can switch windows too, but it's hard to switch if I have 7 pdf documents opened at the same time. So I really wish to have this feature fixed. Thanks in advance.

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  • SQL Azure Security: DoS Part II

    - by Herve Roggero
    Ah!  When you shoot yourself in the foot... a few times... it hurts! That's what I did on Sunday, to learn more about the behavior of the SQL Azure Denial Of Service prevention feature. This article is a short follow up to my last post on this feature. In this post, I will outline some of the lessons learned that were the result of testing the behavior of SQL Azure from two machines. From the standpoint of SQL Azure, they look like one machine since they are behind a NAT. All logins affected The first thing to note is that all the logins are affected. If you lock yourself out to a specific database, none of the logins will work on that database. In fact the database size becomes "--" in the SQL Azure Portal.   Less than 100 sessions I was able to see 50+ sessions being made in SQL Azure (by looking at sys.dm_exec_sessions) before being locked out. The the DoS feature appears to be triggered in part by the number of open sessions. I could not determine if the lockout is triggered by the speed at which connection requests are made however.   Other Databases Unaffected This was interesting... the DoS feature works at the database level. Other databases were available for me to use.   Just Wait Initially I thought that going through SQL Azure and connecting from there would reset the database and allow me to connect again. Unfortunately this doesn't seem to be the case. You will have to wait. And the more you lock yourself out, the more you will have to wait... The first time the database became available again within 30 seconds or so; the second time within 2-3 minutes and the third time... within 2-3 hours...   Successful Logins The DoS feature appears to engage only for valid logins. If you have a login failure, it doesn't seem to count. I ran a test with over 100 login failures without being locked.

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  • How You Helped Shape Java EE 7...

    - by reza_rahman
    For many of us working with the JCP for years, the commitment to transparency and openness is very clear. For others, perhaps the most visible sign to date of this high regard for grassroots level input is a survey on Java EE 7 gathered a few months ago. The survey was designed to get open feedback on a number of critical issues central to the Java EE 7 umbrella specification including what APIs to include in the standard. The survey was highly successful with a large number of high quality responses. With Java EE 7 under our belt and the horizons for Java EE 8 emerging, this is a good time to thank everyone that took the survey once again for their thoughts and let you know what the impact of your voice actually was. I've posted the details on my personal blog. I hope you are encouraged by how your input to the survey helped shape Java EE 7 and continues to shape Java EE 8. Maybe now is the time for you to get more involved :-)?

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  • What is the runtime of this program

    - by grebwerd
    I was wondering what the run time of this small program would be? #include <stdio.h> int main(int argc, char* argv[]) { int i; int j; int inputSize; int sum = 0; if(argc == 1) inputSize = 16; else inputSize = atoi(argv[i]); for(i = 1; i <= inputSize; i++){ for(j = i; j < inputSize; j *=2 ){ printf("The value of sum is %d\n",++sum); } } } n S floor(log n - log (n-i)) = ? i =1 and that each summation would be the floor value between log(n) - log(n-i). Would the run time be n log n?

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  • Tips or techniques to use when you don't know how to code something?

    - by janoChen
    I have a background as UI designer. And I realized that it is a bit hard for me to write a pieces of logic. Sometimes I get it right, but most of the time, I end up with something hacky (and it usually takes a lot of time). And is not that I don't like programming, in fact, I'm starting to like it as much as design. It's just that sometimes I think that I'm better at dealing with colors an shapes, rather than numbers and logic (but I want to change that). What I usually do is to search the solution on the Internet, copy the example, and insert it into my app (I know this is not a very good practice). I've heard that one tip was to write the logic in common English as comment before writing the actual code. What other tips and techniques I can use?

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  • How to advance in my JavaScript skills? [closed]

    - by IlyaD
    I am using javascript for about two years now, and I feel that I can do really basic stuff. I can make some basic algorithms and mostly use jQuery for interactive elements on webpages, and as I need to do more advanced things I get the feeling that my knowledge is lacking. In most cases I find a code, it takes me quite some time to understand it, but I don't understand why it is written as it is. I have no background in computer science, so I'm not sure weather I should go to the basics, or get some advanced javascript book/course. How can I make that jump from using JS for scripting to become a real programmer?

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  • Does approaching SICP in clojure have a high chance of success? [on hold]

    - by ironicaldiction
    I am a third year bachelor student in a software engineering program, and I brought up the idea of reading SICP to an adviser to gain a deeper and more fundamental understanding of the principles behind all this software we engineer. He suggested not to learn scheme to complete the book (because it's not as common as modern dialects of lisp) but to do the exercises in clojure instead. My worry is that completing exercises in clojure instead of scheme will make an already difficult book tortuous. If I do attempt the book's exercises in the more modern clojure, will it be difficult to succeed (for example, because I can't find any real solutions, the syntax they teach for scheme is different, etc.), or do you think approaching the book in clojure could be just as successful as approaching it in scheme? I'm really not knowledgeable enough about either clojure or scheme to make an argument about this, so I wanted to know if I should bring it up or not.

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  • Ubuntu 12.04 lts cannot build a wireless connection

    - by Jupiterr
    Hi i just got a new notebook and it came with ubuntu 12.04 lts operation system. But it can't make a wireless connection. I plugged in my Ethernet cable and i can reach the Internet with it but I need wireless connection so much. This is the first time I'm using ubuntu so i'm really confused. I can see wireless networks (including mine) but i cannot use them. It seems like it's establishing a connection but soon it gives up. Please help, I don't have much time for this and I do not have any idea about operation systems.

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  • How to prevent certain applications from accessing the internet?

    - by Arun Haridas
    I want to prevent certain applications from accessing the internet. When I was using windows XP I had an application (i think it was Zone alarm) which always notified me when an application tried to access the internet. I wonder if there is an application in Ubuntu which would do the same task. If it is possible, please suggest a gui application. the problem is, my internet provider allows me to connect to a single host at a time, that means no two applications can use internet at the same time. When i checked system monitor it showing me that internet is working fine still my browser cant browse.So i want to kill the other application using the internet to browse.

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  • How can I change my "Desktop bar"?

    - by d_Joke
    The problem: In Gnome 3.4 when I click the main menu, it's white. The text of the menu is also white. Original text: I have a problem. When I installed the new version of Gnome (3.4) the "Desktop bar" (I'm sorry, I don't know what's the real name of that bar, but is the bar on the top on Ubuntu 11.10) every time I click on the username icon, or the battery, etc., the menu comes on gray or white and the letters are white. I know maybe this is a stupid question but it annoys me. Besides, my username doest not appear on the login screen. I tried to reset my settings, I delete gnome, and check the Unsettings and CompizConfig but the problem is still there. Maybe I miss something on the process of looking on any configuration tool but I don't think so... Sorry if the question is something basic or even stupid but I'm new on Ubuntu and I'm experimenting whit it.

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