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  • SQL SERVER – Introduction to LEAD and LAG – Analytic Functions Introduced in SQL Server 2012

    - by pinaldave
    SQL Server 2012 introduces new analytical function LEAD() and LAG(). This functions accesses data from a subsequent row (for lead) and previous row (for lag) in the same result set without the use of a self-join . It will be very difficult to explain this in words so I will attempt small example to explain you this function. Instead of creating new table, I will be using AdventureWorks sample database as most of the developer uses that for experiment. Let us fun following query. USE AdventureWorks GO SELECT s.SalesOrderID,s.SalesOrderDetailID,s.OrderQty, LEAD(SalesOrderDetailID) OVER (ORDER BY SalesOrderDetailID ) LeadValue, LAG(SalesOrderDetailID) OVER (ORDER BY SalesOrderDetailID ) LagValue FROM Sales.SalesOrderDetail s WHERE SalesOrderID IN (43670, 43669, 43667, 43663) ORDER BY s.SalesOrderID,s.SalesOrderDetailID,s.OrderQty GO Above query will give us following result. When we look at above resultset it is very clear that LEAD function gives us value which is going to come in next line and LAG function gives us value which was encountered in previous line. If we have to generate the same result without using this function we will have to use self join. In future blog post we will see the same. Let us explore this function a bit more. This function not only provide previous or next line but it can also access any line before or after using offset. Let us fun following query, where LEAD and LAG function accesses the row with offset of 2. USE AdventureWorks GO SELECT s.SalesOrderID,s.SalesOrderDetailID,s.OrderQty, LEAD(SalesOrderDetailID,2) OVER (ORDER BY SalesOrderDetailID ) LeadValue, LAG(SalesOrderDetailID,2) OVER (ORDER BY SalesOrderDetailID ) LagValue FROM Sales.SalesOrderDetail s WHERE SalesOrderID IN (43670, 43669, 43667, 43663) ORDER BY s.SalesOrderID,s.SalesOrderDetailID,s.OrderQty GO Above query will give us following result. You can see the LEAD and LAG functions  now have interval of  rows when they are returning results. As there is interval of two rows the first two rows in LEAD function and last two rows in LAG function will return NULL value. You can easily replace this NULL Value with any other default value by passing third parameter in LEAD and LAG function. Let us fun following query. USE AdventureWorks GO SELECT s.SalesOrderID,s.SalesOrderDetailID,s.OrderQty, LEAD(SalesOrderDetailID,2,0) OVER (ORDER BY SalesOrderDetailID ) LeadValue, LAG(SalesOrderDetailID,2,0) OVER (ORDER BY SalesOrderDetailID ) LagValue FROM Sales.SalesOrderDetail s WHERE SalesOrderID IN (43670, 43669, 43667, 43663) ORDER BY s.SalesOrderID,s.SalesOrderDetailID,s.OrderQty GO Above query will give us following result, where NULL are now replaced with value 0. Just like any other analytic function we can easily partition this function as well. Let us see the use of PARTITION BY in this clause. USE AdventureWorks GO SELECT s.SalesOrderID,s.SalesOrderDetailID,s.OrderQty, LEAD(SalesOrderDetailID) OVER (PARTITION BY SalesOrderID ORDER BY SalesOrderDetailID ) LeadValue, LAG(SalesOrderDetailID) OVER (PARTITION BY SalesOrderID ORDER BY SalesOrderDetailID ) LagValue FROM Sales.SalesOrderDetail s WHERE SalesOrderID IN (43670, 43669, 43667, 43663) ORDER BY s.SalesOrderID,s.SalesOrderDetailID,s.OrderQty GO Above query will give us following result, where now the data is partitioned by SalesOrderID and LEAD and LAG functions are returning the appropriate result in that window. As now there are smaller partition in my query, you will see higher presence of NULL. In future blog post we will see how this functions are compared to SELF JOIN. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Function, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, T SQL, Technology

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  • Meet our Interns: Adam and Hanadi

    - by Maria Sandu
    Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 This week, we’d like to introduce you to two of our ECEMEA Interns, Adam and Hanadi. They’re based in different countries and are part of different teams; however they both have the same enthusiasm in being an Intern at Oracle. “Hi! I’m Adam (Bachelor of Accounting Science & CIMA Diploma in Management Accounting), a member of the Oracle Applications Pre-sales team in Johannesburg, South Africa. Joining Oracle has been a truly inspiring experience thus far. My first week at Oracle has been one of insight and learning. I have had the opportunity to meet and interact with industry leading software solution professionals. Gaining insight into a mammoth multinational company has changed my perception on how things work and has truly opened my eyes to the world of business. Having the privilege of joining the Oracle Graduate Program has afforded me the chance to take advantage of countless training opportunities as well as the chance to learn about Information Technology in a practical manner which is vital to most businesses in today’s modern environment.” “Hi! I’m Hanadi, an Oracle 2013 Sales Intern from Saudi Arabia. I received my BSc in Information Technology from King Saud University and immediately after graduating I applied for the internship at Oracle. I thought it was an incredible opportunity and a great way to shift from college life to career life through learning and practicing in an environment with such high standards. At the beginning, I was a bit nervous in joining the serious business world, but once I joined, I found the program very organized and everyone was extremely helpful, which made it easier for us, as interns, to learn faster. If you are a self-motivated, committed person, who has initiative, accepts challenges, has good soft skills and some technical experience, I would definitely advice you to take a chance and apply for the program once you graduate. Best of luck!” Get the latest updates from the ECEMEA Sales and Presales Internship Programme 2013 by following #Oracleinterns on Twitter or visiting CampusatOracle Facebook Page! /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-family:"Calibri","sans-serif"; mso-ascii- mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi- mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

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  • Merge sort versus quick sort performance

    - by Giorgio
    I have implemented merge sort and quick sort using C (GCC 4.4.3 on Ubuntu 10.04 running on a 4 GB RAM laptop with an Intel DUO CPU at 2GHz) and I wanted to compare the performance of the two algorithms. The prototypes of the sorting functions are: void merge_sort(const char **lines, int start, int end); void quick_sort(const char **lines, int start, int end); i.e. both take an array of pointers to strings and sort the elements with index i : start <= i <= end. I have produced some files containing random strings with length on average 4.5 characters. The test files range from 100 lines to 10000000 lines. I was a bit surprised by the results because, even though I know that merge sort has complexity O(n log(n)) while quick sort is O(n^2), I have often read that on average quick sort should be as fast as merge sort. However, my results are the following. Up to 10000 strings, both algorithms perform equally well. For 10000 strings, both require about 0.007 seconds. For 100000 strings, merge sort is slightly faster with 0.095 s against 0.121 s. For 1000000 strings merge sort takes 1.287 s against 5.233 s of quick sort. For 5000000 strings merge sort takes 7.582 s against 118.240 s of quick sort. For 10000000 strings merge sort takes 16.305 s against 1202.918 s of quick sort. So my question is: are my results as expected, meaning that quick sort is comparable in speed to merge sort for small inputs but, as the size of the input data grows, the fact that its complexity is quadratic will become evident? Here is a sketch of what I did. In the merge sort implementation, the partitioning consists in calling merge sort recursively, i.e. merge_sort(lines, start, (start + end) / 2); merge_sort(lines, 1 + (start + end) / 2, end); Merging of the two sorted sub-array is performed by reading the data from the array lines and writing it to a global temporary array of pointers (this global array is allocate only once). After each merge the pointers are copied back to the original array. So the strings are stored once but I need twice as much memory for the pointers. For quick sort, the partition function chooses the last element of the array to sort as the pivot and scans the previous elements in one loop. After it has produced a partition of the type start ... {elements <= pivot} ... pivotIndex ... {elements > pivot} ... end it calls itself recursively: quick_sort(lines, start, pivotIndex - 1); quick_sort(lines, pivotIndex + 1, end); Note that this quick sort implementation sorts the array in-place and does not require additional memory, therefore it is more memory efficient than the merge sort implementation. So my question is: is there a better way to implement quick sort that is worthwhile trying out? If I improve the quick sort implementation and perform more tests on different data sets (computing the average of the running times on different data sets) can I expect a better performance of quick sort wrt merge sort? EDIT Thank you for your answers. My implementation is in-place and is based on the pseudo-code I have found on wikipedia in Section In-place version: function partition(array, 'left', 'right', 'pivotIndex') where I choose the last element in the range to be sorted as a pivot, i.e. pivotIndex := right. I have checked the code over and over again and it seems correct to me. In order to rule out the case that I am using the wrong implementation I have uploaded the source code on github (in case you would like to take a look at it). Your answers seem to suggest that I am using the wrong test data. I will look into it and try out different test data sets. I will report as soon as I have some results.

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  • Chrome Web Browser Messages: Some Observations

    - by ultan o'broin
    I'm always on the lookout for how different apps handle errors and what kind of messages are shown (I probably need to get out more), I use this 'research' to reflect on our own application error messages patterns and guidelines and how we might make things better for our users in future. Users are influenced by all sorts of things, but their everyday experiences of technology, and especially what they encounter on the internet, increasingly sets their expectations for the enterprise user experience too. I recently came across a couple of examples from Google's Chrome web browser that got me thinking. In the first case, we have a Chrome error about not being able to find a web page. I like how simple, straightforward messaging language is used along with an optional ability to explore things a bit further--for those users who want to. The 'more information' option shows the error encountered by the browser (or 'original' error) in technical terms, along with an error number. Contrasting the two messages about essentially the same problem reveals what's useful to users and what's not. Everyone can use the first message, but the technical version of the message has to be explicitly disclosed for any more advanced user to pursue further. More technical users might search for a resolution, using that Error 324 number, but I imagine most users who see the message will try again later or check their URL again. Seems reasonable that such an approach be adopted in the enterprise space too, right? Maybe. Generally, end users don't go searching for solutions based on those error numbers, and help desk folks generally prefer they don't do so. That's because of the more critical nature of enterprise data or the fact that end users may not have the necessary privileges to make any fixes anyway. What might be more useful here is a link to a trusted source of additional help provided by the help desk or reputable community instead. This takes me on to the second case, this time more closely related to the language used in messaging situations. Here, I first noticed by the using of the (s) approach to convey possibilities of there being one or more pages at the heart of the problem. This approach is a no-no in Oracle style terms (the plural would be used) and it can create translation issues (though it is not a show-stopper). I think Google could have gone with the plural too. However, of more interest is the use of the verb "kill", shown in the message text and as an action button label. For many writers, words like "kill" and "abort" are to be avoided as they can give offense. I am not so sure about that judgment, as really their use cannot be separated from the context. Certainly, for more technical users, they're fine and have been in use for years, so I see no reason to avoid these terms if the audience has accepted them. Most end users too, I think would find the idea of "kill" usable and may even use the term in every day speech. Others might disagree--Apple uses a concept of Force Quit, for example. Ultimately, the only way to really know how to proceed is to research these matter by asking users of differing roles and expertise to perform some tasks, encounter these messages and then make recommendations based on those findings for our designs. Something to do in 2011!

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  • Oracle Social Network and the Flying Monkey Smart Target

    - by kellsey.ruppel
    Originally posted by Jake Kuramoto on The Apps Lab blog. I teased this before OpenWorld, and for those of you who didn’t make it to the show or didn’t come by the Office Hours to take the Oracle Social Network Technical Tour Noel (@noelportugal) ran, I give you the Flying Monkey Smart Target. In brief, Noel built a target, about two feet tall, which when struck, played monkey sounds and posted a comment to an Oracle Social Network Conversation, all controlled by a Raspberry Pi. He also connected a Dropcam to record the winner just prior to the strike. I’m not sure how it all works, but maybe Noel can post the technical specifics. Here’s Noel describing the Challenge, the Target and a few other tidbit in an interview with Friend of the ‘Lab, Bob Rhubart (@brhubart). The monkey target bits are 2:12-2:54 if you’re into brevity, but watch the whole thing. Here are some screen grabs from the Oracle Social Network Conversation, including the Conversation itself, where you can see all the strikes documented, the picture captured, and the annotation capabilities: #gallery-1 { margin: auto;? } #gallery-1 .gallery-item { float: left; margin-top: 10px; text-align: center; width: 33%; } #gallery-1 img { border: 2px solid #cfcfcf; } #gallery-1 .gallery-caption { margin-left: 0; }    That’s Diego in one shot, looking very focused, and Ernst in the other, who kindly annotated himself, two of the development team members. You might have seen them in the Oracle Social Network Hands-On Lab during the show. There’s a trend here. Not by accident, fun stuff like this has becoming our calling card, e.g. the Kscope 12 WebCenter Rock ‘em Sock ‘em Robots. Not only are these entertaining demonstrations, but they showcase what’s possible with RESTful APIs and get developers noodling on how easy it is to connect real objects to cloud services to fix pain points. I spoke to some great folks from the City of Atlanta about extending the concepts of the flying monkey target to physical asset monitoring. Just take an internet-connected camera with REST APIs like the Dropcam, wire it up to Oracle Social Netwok, and you can hack together a monitoring device for a datacenter or a warehouse. Sure, it’s easier said than done, but we’re a lot closer to that reality than we were even two years ago. Another noteworthy bit from Noel’s interview, beginning at 2:55, is the evolution of social developer. Speaking of, make sure to check out the Oracle Social Developer Community. Look for more on the social developer in the coming months. Noel has become quite the Raspberry Pi evangelist, and why not, it’s a great tool, a low-power Linux machine, cheap ($35!) and highly extensible, perfect for makers and students alike. He attended a meetup on Saturday before OpenWorld, and during the show, I heard him evangelizing the Pi and its capabilities to many people. There is some fantastic innovation forming in that ecosystem, much of it with Java. The OTN gang raffled off five Pis, and I expect to see lots of great stuff in the very near future. Stay tuned this week for posts on all our Challenge entrants. There’s some great innovation you won’t want to miss. Find the comments. Update: I forgot to mention that Noel used Twilio, one of his favorite services, during the show to send out Challenge updates and information to all the contestants.

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  • Speeding up procedural texture generation

    - by FalconNL
    Recently I've begun working on a game that takes place in a procedurally generated solar system. After a bit of a learning curve (having neither worked with Scala, OpenGL 2 ES or Libgdx before), I have a basic tech demo going where you spin around a single procedurally textured planet: The problem I'm running into is the performance of the texture generation. A quick overview of what I'm doing: a planet is a cube that has been deformed to a sphere. To each side, a n x n (e.g. 256 x 256) texture is applied, which are bundled in one 8n x n texture that is sent to the fragment shader. The last two spaces are not used, they're only there to make sure the width is a power of 2. The texture is currently generated on the CPU, using the updated 2012 version of the simplex noise algorithm linked to in the paper 'Simplex noise demystified'. The scene I'm using to test the algorithm contains two spheres: the planet and the background. Both use a greyscale texture consisting of six octaves of 3D simplex noise, so for example if we choose 128x128 as the texture size there are 128 x 128 x 6 x 2 x 6 = about 1.2 million calls to the noise function. The closest you will get to the planet is about what's shown in the screenshot and since the game's target resolution is 1280x720 that means I'd prefer to use 512x512 textures. Combine that with the fact the actual textures will of course be more complicated than basic noise (There will be a day and night texture, blended in the fragment shader based on sunlight, and a specular mask. I need noise for continents, terrain color variation, clouds, city lights, etc.) and we're looking at something like 512 x 512 x 6 x 3 x 15 = 70 million noise calls for the planet alone. In the final game, there will be activities when traveling between planets, so a wait of 5 or 10 seconds, possibly 20, would be acceptable since I can calculate the texture in the background while traveling, though obviously the faster the better. Getting back to our test scene, performance on my PC isn't too terrible, though still too slow considering the final result is going to be about 60 times worse: 128x128 : 0.1s 256x256 : 0.4s 512x512 : 1.7s This is after I moved all performance-critical code to Java, since trying to do so in Scala was a lot worse. Running this on my phone (a Samsung Galaxy S3), however, produces a more problematic result: 128x128 : 2s 256x256 : 7s 512x512 : 29s Already far too long, and that's not even factoring in the fact that it'll be minutes instead of seconds in the final version. Clearly something needs to be done. Personally, I see a few potential avenues, though I'm not particularly keen on any of them yet: Don't precalculate the textures, but let the fragment shader calculate everything. Probably not feasible, because at one point I had the background as a fullscreen quad with a pixel shader and I got about 1 fps on my phone. Use the GPU to render the texture once, store it and use the stored texture from then on. Upside: might be faster than doing it on the CPU since the GPU is supposed to be faster at floating point calculations. Downside: effects that cannot (easily) be expressed as functions of simplex noise (e.g. gas planet vortices, moon craters, etc.) are a lot more difficult to code in GLSL than in Scala/Java. Calculate a large amount of noise textures and ship them with the application. I'd like to avoid this if at all possible. Lower the resolution. Buys me a 4x performance gain, which isn't really enough plus I lose a lot of quality. Find a faster noise algorithm. If anyone has one I'm all ears, but simplex is already supposed to be faster than perlin. Adopt a pixel art style, allowing for lower resolution textures and fewer noise octaves. While I originally envisioned the game in this style, I've come to prefer the realistic approach. I'm doing something wrong and the performance should already be one or two orders of magnitude better. If this is the case, please let me know. If anyone has any suggestions, tips, workarounds, or other comments regarding this problem I'd love to hear them.

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  • JRE not working on firefox

    - by user1488595
    I am attempting to get JRE 7 run in firefox in ubuntu 12.04, 32 bit. I've tried to follow this article: www.liberiangeek.net/2012/04/install-oracle-java-runtime-jre-7-in-ubuntu-12-04-precise-pangolin/ . I've also tried this repository: www.webupd8.org/2012/06/how-to-install-oracle-java-7-in-debian.html As well as installing JDK, which contains JRE, by following this article: www.liberiangeek.net/2012/04/install-oracle-java-jdk-7-in-ubuntu-12-04-precise-pangolin/ With all above method of installation, I get the following error in firefox console when I run applet with firefox: java.io.IOException: Cannot run program "/usr/lib/jvm/jre1.7.0/bin/java": error=13, Permission denied at java.lang.ProcessBuilder.start(Unknown Source) at sun.plugin2.jvm.JVMLauncher.start(Unknown Source) at sun.plugin2.main.server.JVMInstance.startImpl(Unknown Source) at sun.plugin2.main.server.JVMInstance.start(Unknown Source) at sun.plugin2.main.server.JVMManager.getOrCreateBestJVMInstance(Unknown Source) at sun.plugin2.main.server.JVMManager.startAppletImpl(Unknown Source) at sun.plugin2.main.server.JVMManager.startApplet(Unknown Source) at sun.plugin2.main.server.JVMManager.startApplet(Unknown Source) at sun.plugin2.main.server.MozillaPlugin.maybeStartApplet(Unknown Source) at sun.plugin2.main.server.MozillaPlugin.setWindow(Unknown Source) Caused by: java.io.IOException: error=13, Permission denied at java.lang.UNIXProcess.forkAndExec(Native Method) at java.lang.UNIXProcess.(Unknown Source) at java.lang.ProcessImpl.start(Unknown Source) ... 10 more java.io.IOException at sun.plugin2.main.server.JVMInstance.startImpl(Unknown Source) at sun.plugin2.main.server.JVMInstance.start(Unknown Source) at sun.plugin2.main.server.JVMManager.getOrCreateBestJVMInstance(Unknown Source) at sun.plugin2.main.server.JVMManager.startAppletImpl(Unknown Source) at sun.plugin2.main.server.JVMManager.startApplet(Unknown Source) at sun.plugin2.main.server.JVMManager.startApplet(Unknown Source) at sun.plugin2.main.server.MozillaPlugin.maybeStartApplet(Unknown Source) at sun.plugin2.main.server.MozillaPlugin.setWindow(Unknown Source) Caused by: java.io.IOException: Cannot run program "/usr/lib/jvm/jre1.7.0/bin/java": error=13, Permission denied at java.lang.ProcessBuilder.start(Unknown Source) at sun.plugin2.jvm.JVMLauncher.start(Unknown Source) ... 8 more Caused by: java.io.IOException: error=13, Permission denied at java.lang.UNIXProcess.forkAndExec(Native Method) at java.lang.UNIXProcess.(Unknown Source) at java.lang.ProcessImpl.start(Unknown Source) ... 10 more Exception in thread "main" java.lang.RuntimeException: java.io.IOException at sun.plugin2.main.server.JVMManager.getOrCreateBestJVMInstance(Unknown Source) at sun.plugin2.main.server.JVMManager.startAppletImpl(Unknown Source) at sun.plugin2.main.server.JVMManager.startApplet(Unknown Source) at sun.plugin2.main.server.JVMManager.startApplet(Unknown Source) at sun.plugin2.main.server.MozillaPlugin.maybeStartApplet(Unknown Source) at sun.plugin2.main.server.MozillaPlugin.setWindow(Unknown Source) Caused by: java.io.IOException at sun.plugin2.main.server.JVMInstance.startImpl(Unknown Source) at sun.plugin2.main.server.JVMInstance.start(Unknown Source) ... 6 more Caused by: java.io.IOException: Cannot run program "/usr/lib/jvm/jre1.7.0/bin/java": error=13, Permission denied at java.lang.ProcessBuilder.start(Unknown Source) at sun.plugin2.jvm.JVMLauncher.start(Unknown Source) ... 8 more Caused by: java.io.IOException: error=13, Permission denied at java.lang.UNIXProcess.forkAndExec(Native Method) at java.lang.UNIXProcess.(Unknown Source) at java.lang.ProcessImpl.start(Unknown Source) ... 10 more I've tried to type: sudo chmod 777 /usr/lib/jvm/jre1.7.0/bin/java It did not work. I also tried to run Eclipse, which requires JRE to run. It did not work originally(it works now), returning the following error: java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons: no swt-gtk-3740 in java.library.path no swt-gtk in java.library.path Can't load library: /home/username/.swt/lib/linux/x86/libswt-gtk-3740.so Can't load library: /home/usename/.swt/lib/linux/x86/libswt-gtk.so at org.eclipse.swt.internal.Library.loadLibrary(Library.java:285) By running "ln -s /usr/lib/jni/libswt-* ~/.swt/lib/linux/x86/" (Thanks, stackoverflow.com/questions/10970754/cant-open-eclipse-in-ubuntu-12-04-java-lang-unsatisfiedlinkerror-could-not-l), Eclipse works again. I have been googling this for days, without luck. Any response would be appreciated.

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  • Monitor and Control Memory Usage in Google Chrome

    - by Asian Angel
    Do you want to know just how much memory Google Chrome and any installed extensions are using at a given moment? With just a few clicks you can see just what is going on under the hood of your browser. How Much Memory are the Extensions Using? Here is our test browser with a new tab and the Extensions Page open, five enabled extensions, and one disabled at the moment. You can access Chrome’s Task Manager using the Page Menu, going to Developer, and selecting Task manager… Or by right clicking on the Tab Bar and selecting Task manager. There is also a keyboard shortcut (Shift + Esc) available for the “keyboard ninjas”. Sitting idle as shown above here are the stats for our test browser. All of the extensions are sitting there eating memory even though some of them are not available/active for use on our new tab and Extensions Page. Not so good… If the default layout is not to your liking then you can easily modify the information that is available by right clicking and adding/removing extra columns as desired. For our example we added Shared Memory & Private Memory. Using the about:memory Page to View Memory Usage Want even more detail? Type about:memory into the Address Bar and press Enter. Note: You can also access this page by clicking on the Stats for nerds Link in the lower left corner of the Task Manager Window. Focusing on the four distinct areas you can see the exact version of Chrome that is currently installed on your system… View the Memory & Virtual Memory statistics for Chrome… Note: If you have other browsers running at the same time you can view statistics for them here too. See a list of the Processes currently running… And the Memory & Virtual Memory statistics for those processes. The Difference with the Extensions Disabled Just for fun we decided to disable all of the extension in our test browser… The Task Manager Window is looking rather empty now but the memory consumption has definitely seen an improvement. Comparing Memory Usage for Two Extensions with Similar Functions For our next step we decided to compare the memory usage for two extensions with similar functionality. This can be helpful if you are wanting to keep memory consumption trimmed down as much as possible when deciding between similar extensions. First up was Speed Dial”(see our review here). The stats for Speed Dial…quite a change from what was shown above (~3,000 – 6,000 K). Next up was Incredible StartPage (see our review here). Surprisingly both were nearly identical in the amount of memory being used. Purging Memory Perhaps you like the idea of being able to “purge” some of that excess memory consumption. With a simple command switch modification to Chrome’s shortcut(s) you can add a Purge Memory Button to the Task Manager Window as shown below.  Notice the amount of memory being consumed at the moment… Note: The tutorial for adding the command switch can be found here. One quick click and there is a noticeable drop in memory consumption. Conclusion We hope that our examples here will prove useful to you in managing the memory consumption in your own Google Chrome installation. If you have a computer with limited resources every little bit definitely helps out. Similar Articles Productive Geek Tips Stupid Geek Tricks: Compare Your Browser’s Memory Usage with Google ChromeMonitor CPU, Memory, and Disk IO In Windows 7 with Taskbar MetersFix for Firefox memory leak on WindowsHow to Purge Memory in Google ChromeHow to Make Google Chrome Your Default Browser TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Acronis Online Backup DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows iFixit Offers Gadget Repair Manuals Online Vista style sidebar for Windows 7 Create Nice Charts With These Web Based Tools Track Daily Goals With 42Goals Video Toolbox is a Superb Online Video Editor Fun with 47 charts and graphs

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  • MacGyver Moments

    - by Geoff N. Hiten
    Denny Cherry tagged me to write about my best MacGyver Moment.  Usually I ignore blogosphere fluff and just use this space to write what I think is important.  However, #MVP10 just ended and I have a stronger sense of community.  Besides, where else would I mention my second best Macgyver moment was making a BIOS jumper out of a soda can.  Aluminum is conductive and I didn't have any real jumpers lying around. My best moment is probably my entire home computer network.  Every system but one is hand-built, usually cobbled together out of spare parts and 'adapted' from its original purpose. My Primary Domain Controller is a Dell 2300.   The Service Tag indicates it was shipped to the original owner in 1999.  Box has a PERC/1 RAID controller.  I acquired this from a previous employer for $50.  It runs Windows Server 2003 Enterprise Edition.  Does DNS, DHCP, and RADIUS services as a bonus.  RADIUS authentication is used for VPN and Wireless access.  It is nice to sign in once and be done with it. The Secondary Domain Controller is an old desktop.  Dual P-III 933 with some extra drives. My VPN box is a P-II 250 with 384MB of RAM and a 21 GB hard drive.  I did a P-to-V to my Hyper-V box a year or so ago and retired the hardware again.  Dynamic DNS lets me connect no matter how often Comcast shuffles my IP. The Hyper-V box is a desktop system with 8GB RAM and an AMD Athlon 5000+ processor.  Cost me less than $500 to put together nearly two years ago.  I reasoned that if Vista and Windows 2008 were the same code then Vista 64-bit certified meant the drivers for Vista would load into Windows 2008.  Turns out I was right. Later I added three 1TB drives but wasn't too happy with how that turned out.  I recovered two of the drives yesterday and am building an iSCSI storage unit. (Much thanks to Starwind.  Great product).  I am using an old AMD 1.1GhZ box with 1.5 GB RAM (cobbled together from three old PCs) as my storave server.  The Hyper-V box is slated for an OS rebuild to 2008 R2 once I get the storage system worked out.  maybe in a week or two. A couple of DLink Gigabit switches ties everything together. Add in the Vonage box, the three PCs, the Wireless-N Access Point, the two notebooks and the XBox and you have gone from MacGyver to darn near Rube Goldberg. The only thing I really spend money on is power supplies and fans.  I buy top-of-the-line for both. I even pull and crimp my own cables. Oh, and if my kids hose up a PC, I have all of their data on a server elsewhere.  Every PC and laptop is pretty much interchangable for email and basic workstation tasks.  That helps a lot too. Of course I will tag SQLVariant.

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  • Knowledge Management Feedback

    - by Robert Schweighardt
    Did you know that you can provide feedback on Knowledge Management (KM) articles? It's nice to read a technical article that is well-written, the grammar and spelling are correct, the information is up to date, concise, to the point, easy to understand and it flows from one paragraph to another.  And though we always strive for a well-written article, it doesn't always come out that way. Knowledge Management articles are written by Oracle Support Engineers and we welcome your feedback.  Providing feedback helps to improve Oracle's Knowledge Base.  If you're reading a KM article and you have a comment, please let us know about it.  Maybe it's just to fix a spelling or grammatical error.  Maybe there's a broken link that needs to be fixed.  Maybe it's a suggestion to provide additional information.  Maybe the article contains incorrect information.  Maybe some information in the article is outdated.  Maybe something is not clear in the article.  Whatever it is, we want to hear about it.  We value your input! When you provide feedback it goes directly to the owner of the article.  The owner carefully reviews the comment and decides whether or not to implement it.  Most comments are implemented and we strive to implement them within a week!  For those comments that are not implemented, there is normally a good reason.  It may not be feasible to implement the suggestion or the suggestion may not be correct.  We don't take the decision lightly! So how do you provide feedback? Providing feedback on a KM article depends on whether you're a customer or an Oracle Employee. Customer 1. In the upper right hand corner of the article, click on the little +/- Rate this document icon: Note: The grayed out Comments (0) link will only show a number when there are open comments that are still being evaluated. 2. In the Article Rating window, complete as many of the following optional fields as you like and then click the Send Rating button: Rate the article as Excellent, Good or Poor Specify whether the article helped you or not Specify the ease of finding the article Provide whatever comments you have Employee The interface for Oracle Employees is a little bit different, there are more options. 1. The +/- Rate this document icon is also available to employees and is identical to what the customers have.  Please see Customer section above. 2. The Show document comments link shows all comments that have ever been submitted for the article 3. Employees have an additional way to submit a comment.  Click on the little + Add Comment icon: 4. Fill out the Add Comment fields and click the Add Comment button: We look forward to your feedback!

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  • Surface V2.0

    - by Dennis Vroegop
    It’s been quiet around here. And the reason for that is that it’s been quiet around Surface for a while. Now, a lot of people assume that when a product team isn’t making too much noise that must mean they stopped working on their product. Remember the PDC keynote in 2010? Just because they didn’t mention WPF there a lot of people had the idea that WPF was dead and abandoned for Silverlight. Of course, this couldn’t be farther from the truth. The same applies to Surface. While we didn’t hear much from the team in Redmond they were busy putting together the next version of the platform. And at the CES in January the world saw what they have been up to all along: Surface V2.0 as it’s commonly known. Of course, the product is still in development. It’s not here yet, we can’t buy one yet. However, more and more information comes available and I think this is a good time to share with you what it’s all about! The biggest change from an organizational point of view is that Microsoft decided to stop producing the hardware themselves. Instead, they have formed a partnership with Samsung who will manufacture the devices. This means that you as a buyer get the benefits of a large, worldwide supplier with all the services they can offer. Not that Microsoft didn’t do that before but since Surface wasn’t a ‘big’ product it was sometimes hard to get to the right people. The new device is officially called the “Samsung SUR 40 for Microsoft Surface” which is quite a mouthful. The software that runs the device is of course still coming from Microsoft. Let’s dive into the technical specs (note: all of this is preliminary, it’s still in the Alpha phase!): Audio out HDMI / StereoRCA / SPDIF / 2 times 3.5mm audio out jack Brightness 300 CD/m2 Communications 1GB Ethernet/802.11/Bluetooth Contrast Ratio 1:1000 CPU AMD Athlon X2 245e 2.9Ghz Dual Core Display Resolution Full HD 1080p 1920x1080 / 16:9 aspect ratio GPU AMD Radeon HD 6750 1GB GDDRS HDD 320 GB / 7200 RPM HDMI In / HDMI out Yes I/O Ports 4 USB, SD Card reader Operation System Embedded Windows 7 Professional 64 bits Panel Size 40” diagonal Protection Glass Gorilla Glass RAM 4 GB DD3 Weight / with standard legs 70.0 Kg / 154 lbs Weight / standalone 39.5 Kg / 87 lbs Height (without legs) 4 inch Contact points recognized > 50 Cool Factor Extremely   Ok, the last point is not official, but I do think it needs to be there. Let’s talk software. As noted, it runs Windows 7 Professional 64 bit, which means you can run Visual Studio 2010 on it. The software is going to be developed in WPF4.0 with the additional Surface SDK 2.0. It will contain all the things you’ve seen before plus some extra’s. They have taken some steps to align it more with the Surface Toolkit which you can download today, so if you do things right your software should be portable between a WPF4.0 Windows 7 Multi-touch app and the Surface v2 environment. It still uses infrared to detect contacts, so in that respect nothing much has changed conceptually. We still can differentiate between a finger, a tag or a blob. Of course, since the new platform has a much higher resolution (compared to the 1024x768 of the first version) you might need to look at your code again. I’ve seen a lot of applications on Surface that assume the old resolution and moving that to V2 is going to be some work. To be honest: as I am under NDA I cannot disclose much about the new software besides what I have told you here, but trust me: it’s going to blow people away. Now, the biggest question for me is: when can I get one? Until we can, have a look here: Tags van Technorati: surface,samsung,WPF

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  • Pondering New Technology

    - by MOSSLover
    So I have been standing at the end of a fork for a year peering down a corner looking at this way and that way trying to figure out where I fit in.  I was so enthusiastic and excited about Silverlight when it came out.  It was this amazing awesome technology that had this really cool animation and webcam/multimedia piece.  I thought if I put my money on Silverlight it’s going somewhere, then HTML 5 came out and the wind shifted.  I realized times were changing. I have been working with web technologies since I was 15 years old.  Playing with html and javascript and even css back when it first came out.  In tech years 15 years is forever.  Things change so quickly and so often.  So I guess the question is where am I heading?  The answer is mobile technology.  For some reason I was resisting change and I have no idea why.  I guess I really wanted to see more than one player.  I didn’t quite feel that Microsoft was ready with Windows Phone 7.  It was a great start, but it just didn’t feel like they went all the way.  Now with Windows 8 it feels like they are at version 2.0.  It’s like hitting Silverlight 2.0 where they finally added the .Net bits.  The path is paved, but we don’t know where it’s leading.  Then we had 3.0, 4.0, and 5.0 to mature the technology into what it is today (man I’m hoping they are going to roll some of the cool bits into other tech if they don’t exist). Anyway, I’m on board, but I’m not buying a Windows Tablet just yet.  I was hoping for a 7 inch screen from Apple around $300 or just above and a 7 inch screen from the MS side around the same price.  What I got was the Apple side, but nothing from Microsoft.  I was pretty disappointed with the $500 market price on the RT version.  I realized Microsoft is close, but not quite where Apple is today.  Yes the devices have Office that they are offering, but the sticker is just too much for a first generation device.  If you guys remember correctly the first generation iPad was quite expensive.  I guess for a 1st generation device $500 is pretty good. So I guess what I’m trying to say is that I am shifting my focus entirely away from Silverlight and more towards mobile.  I will be doing a lot of postings on iOS, Windows 8, and Windows Phone 8 with SharePoint 2013.  Since I don’t have a tablet and don’t foresee myself buying one just yet it might be mostly on the phones for right now.  I want to do a bunch of testing on various devices on what needs to be done in apps on each device.  I might add a bit on porting code from one to the other.  I think it’s going to be a lot of fun and make things flow a little better for me.  In a way it’s kind of like Star Trek 6 where they talk about the Undiscovered Country.  I’m going to jump forward completely and see where I land. Technorati Tags: SharePoint 2013,Mobile,Windows 8,iOS

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  • Give a session on C++ AMP – here is how

    - by Daniel Moth
    Ever since presenting on C++ AMP at the AMD Fusion conference in June, then the Gamefest conference in August, and the BUILD conference in September, I've had numerous requests about my material from folks that want to re-deliver the same session. The C++ AMP session I put together has evolved over the 3 presentations to its final form that I used at BUILD, so that is the one I recommend you base yours on. Please get the slides and the recording from channel9 (I'll refer to slide numbers below). This is how I've been presenting the C++ AMP session: Context (slide 3, 04:18-08:18) Start with a demo, on my dual-GPU machine. I've been using the N-Body sample (for VS 11 Developer Preview). (slide 4) Use an nvidia slide that has additional examples of performance improvements that customers enjoy with heterogeneous computing. (slide 5) Talk a bit about the differences today between CPU and GPU hardware, leading to the fact that these will continue to co-exist and that GPUs are great for data parallel algorithms, but not much else today. One is a jack of all trades and the other is a number cruncher. (slide 6) Use the APU example from amd, as one indication that the hardware space is still in motion, emphasizing that the C++ AMP solution is a data parallel API, not a GPU API. It has a future proof design for hardware we have yet to see. (slide 7) Provide more meta-data, as blogged about when I first introduced C++ AMP. Code (slide 9-11) Introduce C++ AMP coding with a simplistic array-addition algorithm – the slides speak for themselves. (slide 12-13) index<N>, extent<N>, and grid<N>. (Slide 14-16) array<T,N>, array_view<T,N> and comparison between them. (Slide 17) parallel_for_each. (slide 18, 21) restrict. (slide 19-20) actual restrictions of restrict(direct3d) – the slides speak for themselves. (slide 22) bring it altogether with a matrix multiplication example. (slide 23-24) accelerator, and accelerator_view. (slide 26-29) Introduce tiling incl. tiled matrix multiplication [tiling probably deserves a whole session instead of 6 minutes!]. IDE (slide 34,37) Briefly touch on the concurrency visualizer. It supports GPU profiling, but enhancements specific to C++ AMP we hope will come at the Beta timeframe, which is when I'll be spending more time talking about it. (slide 35-36, 51:54-59:16) Demonstrate the GPU debugging experience in VS 11. Summary (slide 39) Re-iterate some of the points of slide 7, and add the point that the C++ AMP spec will be open for other compiler vendors to implement, even on other platforms (in fact, Microsoft is actively working on that). (slide 40) Links to content – see slide – including where all your questions should go: http://social.msdn.microsoft.com/Forums/en/parallelcppnative/threads.   "But I don't have time for a full blown session, I only need 2 (or just 1, or 3) C++ AMP slides to use in my session on related topic X" If all you want is a small number of slides, you can take some from the session above and customize them. But because I am so nice, I have created some slides for you, including talking points in the notes section. Download them here. Comments about this post by Daniel Moth welcome at the original blog.

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  • Change the Way Google Search Results Display in Firefox

    - by Asian Angel
    Are you tired of the default look for search results at Google? If you want a different and customized pleasing look for them, then join us as we look at the GoogleMonkeyR User Script. Note: User Style Scripts & User Scripts can be added to most browsers but we are using Firefox & the Greasemonkey extension for our example here. Before Here is the standard look for search results at Google…not bad but it really does not stand out that well either. Installing the User Script You may be asking yourself what makes this particular user script different from others. Take a look at the list of goodies that you get access to and you will understand: Multiple columns of results Removes “Sponsored Links” Add numbers to the results Auto-load more results Removes web search dialogues Open links in a new tab Favicons GooglePreview Self updating Can be configured from a simple user dialogue To get started click on the Webpage Install Button. Once you click on the Webpage Install Button you will see the following window asking for confirmation to add the user script to Firefox. Click Install to complete the process. GoogleMonkeyR in Action Refreshing the same search page shown above shows a noticeable difference already. The light blue background makes the search results stand out a bit better. This is an improvement from before but you will definitely want to have a look to see just how far you can go… Right click on the Greasemonkey Status Bar Icon, go to User Script Commands, and select GoogleMonkeyR Preferences. Once you have clicked on GoogleMonkeyR Preferences the search page will be shaded out and you will have access to the user script’s preferences. This is where you can really make your search results unique looking! Here are the changes that we started out with… After refreshing our search results things looked even better. A look at the entire page of results with our browser maximized and set for two columns. If you have the Auto load more results Option enabled new results will be added very quickly as you scroll down. Our set of search results after adding Favicons & GooglePreview Images. Conclusion If you have been wanting a more dramatic and pleasing look for the search results at Google then you can not go wrong with the GoogleMonkeyR User Script. Change as little or as much as you want to get that perfect look in your browser. Link Install the GoogleMonkeyR User Script Download the Greasemonkey extension for Firefox (Mozilla Add-ons) Similar Articles Productive Geek Tips Make Firefox Quick Search Use Google’s Beta Search KeysMake Firefox Built-In Search Box Use Google’s Experimental Search KeysMake Firefox Show Google Results for Default Address Bar SearchesCombine Wolfram Alpha & Google Search Results in FirefoxHow To Run 4 Different Google Searches at Once In the Same Tab TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips VMware Workstation 7 Acronis Online Backup DVDFab 6 Revo Uninstaller Pro Explorer++ is a Worthy Windows Explorer Alternative Error Goblin Explains Windows Error Codes Twelve must-have Google Chrome plugins Cool Looking Skins for Windows Media Player 12 Move the Mouse Pointer With Your Face Movement Using eViacam Boot Windows Faster With Boot Performance Diagnostics

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  • The Value of SOA Specialization - Fujitsu

    - by Jürgen Kress
    Thanks for the nice ink The Value of Specialization In my last post  I talked about Fujitsu's achievement in obtaining SOA and other specializations, but I have heard murmurings from other partners about what just is the value? I think Oracle have to do more to advertise the benefits to customers, we need to see customers asking for specialization for it to really work, but Oracle have made great promises about only recommending those partners who are specialized. For us there was another benefit. Oracle was sponsoring the 3rd Annual SOA Symposium in Berlin and invited us as their first specialized partner to take part. There is a great blog about the symposium on the SOA community blog site. This is real commitment from Oracle and we have other marketing opportunities being worked on with Jürgen. This does generate leads so my message to other Oracle Partners is, you need to do this, it is worthwhile.   Fujitsu - First SOA Specialized Partner Globally Just before Oracle Open World I found out that Fujitsu had achieved the first SOA Specialization globally. I think most partners know what the requirements are for Specialization and that in itself is challenging but the bureaucracy around the actual submission is an exercise in tenacity. I won’t go into that now; I have had my dig at Oracle this month, but enough to say the process could be improved. As a platinum partner we needed 5 specializations and we decided to go for SOA first. The reasoning behind this is that our Oracle Practice is known for being applications centric. We have always had an excellent technical capability but no one ever talked about that, it was just part and parcel of an implementation. However today we have just as many bids that are technology lead as there is applications lead, so it seemed a good plan to work on the areas we were not known for. We appointed a capability lead to be responsible for putting the team through the training and testing and Rosemary (Kell) was excellent, she ensured that everyone was on track and that it wasn’t just getting put into the ‘to do list’. In Fujitsu everyone in the Oracle Practice has an objective to achieve the competency tests in their area, so achieving the 2 pre sales, 2 sales and 1 support was no problem at all. We actually had 22 with the support capability proficiency.  The implementation specialist exams are much harder, more like OCP in the database area. We had help from the Oracle SOA Community; Jürgen Kress who runs this in EMEA is really motivational. At the time we started SOA was a beta exam which means you do not get the results immediately but again we put forward more than we needed. Manjit Chopra, Sukhraj Sahota, Emely Patra, Ian Scorrer and Sunny Sidhu all took the exam and eventually got the results they wanted they had passed. Congratulations. Here is Jurgen expalining why specialization is important. After the tests came the submissions where you need to include deals and experience, this was my bit, and persuading Oracle we really deserved the specialization. Finally we got the news we had been awarded the specialization, and a few days later that we were first globally. I am very proud. However there is no rest for the wicked and we plodded on to make the 5 specializations needed for Platinum and now we are working on the new Diamond status and I think SOA will be one of our 5 ‘super specializations’. This is a global Fujitsu initiative and I work closely with my colleague in Germany Jessika Weiss. It was nice to be able to have a press release about this and a comment from Judson Althoff  head of Oracle Alliances. For more information on SOA Specialization and the SOA Partner Community please feel free to register at www.oracle.com/goto/emea/soa (OPN account required) Blog Twitter LinkedIn Mix Forum Wiki Website Technorati Tags: SOA,SOA Community,OPN,Oracle,Fujitsu,Debra Lilley,Jürgen Kress,Specialization,SOA Specialization

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  • Bash completion doesn't work, or is ignoring what I've typed; but works for commands

    - by Neil Traft
    Bash completion seems to be ignoring what I've typed (it tries to complete, but acts as if there's nothing under the cursor). I know I saw it work on this machine earlier today, but I'm not sure what has changed. Some examples: cd shows all directories under my current folder: $ cd co<tab><tab> cmake/ config/ doc/ examples/ include/ programs/ sandbox/ src/ .svn/ tests/ Commands like ls and less show all files and directories under my current folder: $ ls co<tab><tab> cmake/ config/ .cproject Doxyfile.in include/ programs/ README.txt src/ tests/ CMakeLists.txt COPYING.txt doc/ examples/ mainpage.dox .project sandbox/ .svn/ Even when I try to complete things from a different folder, it gives me only the results for my current folder (telling me that it is completely ignoring what I've typed): $ cd ~/D<tab><tab> cmake/ config/ doc/ examples/ include/ programs/ sandbox/ src/ .svn/ tests/ But it seems to be working fine for commands and variables: $ if<tab><tab> if ifconfig ifdown ifnames ifquery ifup $ echo $P<tab><tab> $PATH $PIPESTATUS $PPID $PS1 $PS2 $PS4 $PWD $PYTHONPATH I do have this bit in my .bashrc, and I have confirmed that my .bashrc is indeed getting sourced: if [ -f /etc/bash_completion ] && ! shopt -oq posix; then . /etc/bash_completion fi I've even tried manually executing that file, but it doesn't fix the problem: $ . /etc/bash_completion There was even one point in time where it was working for ls, but was not working for cd ... but I can't replicate that result now. Update: I also just discovered that I have terminals open from earlier that still work. I ran source .bashrc in one of them and afterwards completion was broken. Here is my .bashrc: # ~/.bashrc: executed by bash(1) for non-login shells. # see /usr/share/doc/bash/examples/startup-files (in the package bash-doc) # for examples # # Modified by Neil Traft #source ~/.profile # Allow globs to expand hidden files shopt -s dotglob nullglob # If not running interactively, don't do anything [ -z "$PS1" ] && return # don't put duplicate lines or lines starting with space in the history. # See bash(1) for more options HISTCONTROL=ignoreboth # append to the history file, don't overwrite it shopt -s histappend # for setting history length see HISTSIZE and HISTFILESIZE in bash(1) HISTSIZE=1000 HISTFILESIZE=2000 # check the window size after each command and, if necessary, # update the values of LINES and COLUMNS. shopt -s checkwinsize # If set, the pattern "**" used in a pathname expansion context will # match all files and zero or more directories and subdirectories. #shopt -s globstar # make less more friendly for non-text input files, see lesspipe(1) [ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)" # set variable identifying the chroot you work in (used in the prompt below) if [ -z "$debian_chroot" ] && [ -r /etc/debian_chroot ]; then debian_chroot=$(cat /etc/debian_chroot) fi # Color the prompt export PS1="\[$(tput setaf 2)\]\u@\h:\[$(tput setaf 5)\]\W\[$(tput setaf 2)\] $\[$(tput sgr0)\] " # enable color support of ls and also add handy aliases if [ -x /usr/bin/dircolors ]; then test -r ~/.dircolors && eval "$(dircolors -b ~/.dircolors)" || eval "$(dircolors -b)" alias ls='ls --color=auto' #alias dir='dir --color=auto' #alias vdir='vdir --color=auto' alias grep='grep --color=auto' alias fgrep='fgrep --color=auto' alias egrep='egrep --color=auto' fi # Add an "alert" alias for long running commands. Use like so: # sleep 10; alert alias alert='notify-send --urgency=low -i "$([ $? = 0 ] && echo terminal || echo error)" "$(history|tail -n1|sed -e '\''s/^\s*[0-9]\+\s*//;s/[;&|]\s*alert$//'\'')"' # Alias definitions. # You may want to put all your additions into a separate file like # ~/.bash_aliases, instead of adding them here directly. # See /usr/share/doc/bash-doc/examples in the bash-doc package. if [ -f ~/.bash_aliases ]; then . ~/.bash_aliases fi # enable programmable completion features (you don't need to enable # this, if it's already enabled in /etc/bash.bashrc and /etc/profile # sources /etc/bash.bashrc). if [ -f /etc/bash_completion ] && ! shopt -oq posix; then . /etc/bash_completion fi

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  • Tweak Conky Layout via a script

    - by begtognen
    I'm using a script in Conky in order to display my new gmail on my desktop. It works beautifully, but is kind of ugly, and I'm not sure how to fix it. What I've currently got looks like this: And what I'd like is this: Any ideas for how to make that happen are much appreciated. Here's the script I'm currently using (I think I've snipped out the correct part, if I haven't please let me know.) #!/usr/bin/perl use Switch; use Text::Wrap; my $what=$ARGV[0]; $user="username"; #username for gmail account $pass="password"; #password for gmail account $file="/tmp/gmail.html"; #temporary file to store gmail #wrap format for subject $Text::Wrap::columns=65; #Number of columns to wrap subject at $initial_tab=""; #Tab for first line of subject $subsequent_tab="\t"; #tab for wrapped lines $quote="\""; #put quotes around subject #limit the number of emails to be displayed $emails=-1; #if -1 display all emails &passwd; #give password the proper url character encoding switch($what){ #determine what the user wants case "n" {&gmail; print "$new\n";} #print number of new emails case "s" { #print $from and $subj for new email &gmail; if ($new0){ my $size=@from; if ($emails!=-1 && $size$emails){$size=$emails;} #limit number of emails displayed for(my $i=0; $i$emails){print "$emails out of $size new emails displayed\n";} } } case "e" { #print number of new emails, $from, and $subj &gmail; if($new==0){print "You have no new emails.\n";} else{ print "You have $new new email(s).\n"; my $size=@from; if ($emails!=-1 && $size$emails){$size=$emails;} #limit number of emails displayed for(my $i=0; $i$emails){print "$emails out of $size new emails displayed\n";} } } else { print "Usage Error: gmail.pl \n"; print "\tn displays number of new emails\n"; print "\ts displays from line and subject line for each new email.\n"; print "\te displays the number of new emails and from line plus \n"; print "\t\tsubject line for each new email.\n"; } #didn't give proper option } sub gmail{ if(!(-e $file)){ #create file if it does not exists `touch $file`; } #get new emails `wget -O - https://$user:$pass\@mail.google.com/mail/feed/atom --no-check-certificate $file`; open(IN, $file); #open $file my $i=0; #initialize count $new=0; #initialize new emails to 0 my $flag=0; while(){ #cycle through $file if(//){$flag=1;} elsif(/(\d+)/){$new=$1;} #grab number of new emails elsif($flag==1){ if(/.+/){push(@subj, &msg);} #grab new email titles elsif(/(.+)/){push(@from, $1); $flag=0;} #grab new email from lines } } close(IN); #close $file } sub passwd{ #change to url escape codes in password #URL ESCAPE CODES $_=$pass; s/\%/\%25/g; s/\#/\%23/g; s/\$/\%24/g; s/\&/\%26/g; s/\//\%2F/g; s/\:/\%3A/g; s/\;/\%3B/g; s/\/\%3E/g; s/\?/\%3F/g; s/\@/\%40/g; s/\[/\%5B/g; s/\\/\%5C/g; s/\]/\%5D/g; s/\^/\%5E/g; s/\`/\%60/g; s/\{/\%7B/g; s/\|/\%7C/g; s/\}/\%7D/g; s/\~/\%7E/g; $pass=$_; } sub msg{ #THE HTML CODED CHARACTER SET [ISO-8859-1] chomp; s/(.+)/$1/; #get just the subject #now replace any special characters s/\&\#33\;/!/g; #Exclamation mark s/\&\#34\;/"/g; s/\"\;/"/g; #Quotation mark s/\&\#35\;/#/g; #Number sign s/\&\#36\;/\$/g; #Dollar sign s/\&\#37\;/%/g; #Percent sign s/\&\#38\;/&/g; s/\&\;/&/g; #Ampersand s/\&\#39\;/'/g; #Apostrophe s/\&\#40\;/(/g; #Left parenthesis s/\&\#41\;/)/g; #Right parenthesis s/\&\#42\;/*/g; #Asterisk s/\&\#43\;/+/g; #Plus sign s/\&\#44\;/,/g; #Comma s/\&\#45\;/-/g; #Hyphen s/\&\#46\;/./g; #Period (fullstop) s/\&\#47\;/\//g; #Solidus (slash) s/\&\#58\;/:/g; #Colon s/\&\#59\;/\;/g; #Semi-colon s/\&\#60\;//g; s/\>\;//g; #Greater than s/\&\#63\;/\?/g; #Question mark s/\&\#64\;/\@/g; #Commercial at s/\&\#91\;/\[/g; #Left square bracket s/\&\#92\;/\\/g; #Reverse solidus (backslash) s/\&\#93\;/\]/g; #Right square bracket s/\&\#94\;/\^/g; #Caret s/\&\#95\;/_/g; #Horizontal bar (underscore) s/\&\#96\;/\`/g; #Acute accent s/\&\#123\;/\{/g; #Left curly brace s/\&\#124\;/|/g; #Vertical bar s/\&\#125\;/\}/g; #Right curly brace s/\&\#126\;/~/g; #Tilde s/\&\#161\;/¡/g; #Inverted exclamation s/\&\#162\;/¢/g; #Cent sign s/\&\#163\;/£/g; #Pound sterling s/\&\#164\;/¤/g; #General currency sign s/\&\#165\;/¥/g; #Yen sign s/\&\#166\;/¦/g; #Broken vertical bar s/\&\#167\;/§/g; #Section sign s/\&\#168\;/¨/g; #Umlaut (dieresis) s/\&\#169\;/©/g; s/\©\;/©/g; #Copyright s/\&\#170\;/ª/g; #Feminine ordinal s/\&\#171\;/«/g; #Left angle quote, guillemotleft s/\&\#172\;/¬/g; #Not sign s/\&\#174\;/®/g; #Registered trademark s/\&\#175\;/¯/g; #Macron accent s/\&\#176\;/°/g; #Degree sign s/\&\#177\;/±/g; #Plus or minus s/\&\#178\;/²/g; #Superscript two s/\&\#179\;/³/g; #Superscript three s/\&\#180\;/´/g; #Acute accent s/\&\#181\;/µ/g; #Micro sign s/\&\#182\;/¶/g; #Paragraph sign s/\&\#183\;/·/g; #Middle dot s/\&\#184\;/¸/g; #Cedilla s/\&\#185\;/¹/g; #Superscript one s/\&\#186\;/º/g; #Masculine ordinal s/\&\#187\;/»/g; #Right angle quote, guillemotright s/\&\#188\;/¼/g; s/\¼\;/¼/g; # Fraction one-fourth s/\&\#189\;/½/g; s/\½\;/½/g; # Fraction one-half s/\&\#190\;/¾/g; s/\¾\;/¾/g; # Fraction three-fourths s/\&\#191\;/¿/g; #Inverted question mark s/\&\#192\;/À/g; #Capital A, grave accent s/\&\#193\;/Á/g; #Capital A, acute accent s/\&\#194\;/Â/g; #Capital A, circumflex accent s/\&\#195\;/Ã/g; #Capital A, tilde s/\&\#196\;/Ä/g; #Capital A, dieresis or umlaut mark s/\&\#197\;/Å/g; #Capital A, ring s/\&\#198\;/Æ/g; #Capital AE dipthong (ligature) s/\&\#199\;/Ç/g; #Capital C, cedilla s/\&\#200\;/È/g; #Capital E, grave accent s/\&\#201\;/É/g; #Capital E, acute accent s/\&\#202\;/Ê/g; #Capital E, circumflex accent s/\&\#203\;/Ë/g; #Capital E, dieresis or umlaut mark s/\&\#204\;/Ì/g; #Capital I, grave accent s/\&\#205\;/Í/g; #Capital I, acute accent s/\&\#206\;/Î/g; #Capital I, circumflex accent s/\&\#207\;/Ï/g; #Capital I, dieresis or umlaut mark s/\&\#208\;/Ð/g; #Capital Eth, Icelandic s/\&\#209\;/Ñ/g; #Capital N, tilde s/\&\#210\;/Ò/g; #Capital O, grave accent s/\&\#211\;/Ó/g; #Capital O, acute accent s/\&\#212\;/Ô/g; #Capital O, circumflex accent s/\&\#213\;/Õ/g; #Capital O, tilde s/\&\#214\;/Ö/g; #Capital O, dieresis or umlaut mark s/\&\#215\;/×/g; #Multiply sign s/\&\#216\;/Ø/g; #Capital O, slash s/\&\#217\;/Ù/g; #Capital U, grave accent s/\&\#218\;/Ú/g; #Capital U, acute accent s/\&\#219\;/Û/g; #Capital U, circumflex accent s/\&\#220\;/Ü/g; #Capital U, dieresis or umlaut mark s/\&\#221\;/Ý/g; #Capital Y, acute accent s/\&\#222\;/Þ/g; #Capital THORN, Icelandic s/\&\#223\;/ß/g; #Small sharp s, German (sz ligature) s/\&\#224\;/à/g; #Small a, grave accent s/\&\#225\;/á/g; #Small a, acute accent s/\&\#226\;/â/g; #Small a, circumflex accent s/\&\#227\;/ã/g; #Small a, tilde s/\&\#228\;/ä/g; #Small a, dieresis or umlaut mark s/\&\#229\;/å/g; #Small a, ring s/\&\#230\;/æ/g; #Small ae dipthong (ligature) s/\&\#231\;/ç/g; #Small c, cedilla s/\&\#232\;/è/g; #Small e, grave accent s/\&\#233\;/é/g; #Small e, acute accent s/\&\#234\;/ê/g; #Small e, circumflex accent s/\&\#235\;/ë/g; #Small e, dieresis or umlaut mark s/\&\#236\;/ì/g; #Small i, grave accent s/\&\#237\;/í/g; #Small i, acute accent s/\&\#238\;/î/g; #Small i, circumflex accent s/\&\#239\;/ï/g; #Small i, dieresis or umlaut mark s/\&\#240\;/ð/g; #Small eth, Icelandic s/\&\#241\;/ñ/g; #Small n, tilde s/\&\#242\;/ò/g; #Small o, grave accent s/\&\#243\;/ó/g; #Small o, acute accent s/\&\#244\;/ô/g; #Small o, circumflex accent s/\&\#245\;/õ/g; #Small o, tilde s/\&\#246\;/ö/g; #Small o, dieresis or umlaut mark s/\&\#247\;/÷/g; #Division sign s/\&\#248\;/ø/g; #Small o, slash s/\&\#249\;/ù/g; #Small u, grave accent s/\&\#250\;/ú/g; #Small u, acute accent s/\&\#251\;/û/g; #Small u, circumflex accent s/\&\#252\;/ü/g; #Small u, dieresis or umlaut mark s/\&\#253\;/ý/g; #Small y, acute accent s/\&\#254\;/þ/g; #Small thorn, Icelandic s/\&\#255\;/ÿ/g; #Small y, dieresis or umlaut mark s/^\s+//; return $_; }

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  • Why SQL Developer Rocks for the Advanced User Too

    - by thatjeffsmith
    While SQL Developer may be ‘perfect for Oracle beginners,’ that doesn’t preclude advanced and intermediate users from getting their fair share of toys! I’ve been working with Oracle since the 7.3.4 days, and I think it’s pretty safe to say that the WAY an ‘old timer’ uses a tool like SQL Developer is radically different than the ‘beginner.’ If you’ve been reluctant to use SQL Developer because it’s a GUI, give me a few minutes to try to convince you it’s worth a second (or third) look. 1. Help when you want it, and only when you want it One of the biggest gripes any user has with a piece of software is when said software can’t get out of it’s own way. When you’re typing in a word processor, sometimes you can do without the grammar and spelling checks, the offer to auto-complete your words, and all of the additional mark-up. This drives folks to programs like Notepad++ and vi. You can disable the code insight feature so you can type unmolested by SQL Developer’s attempt to auto-complete your object names. Now, if you happen to come across a long or hard to spell object name, you can still invoke the feature on demand using Ctrl+Spacebar Code Editor – Completion Insight – Enable Completion Auto-Popup (Keyword being Auto) 2. Automatic File Tracking SQL*Minus is nice. Vi is cool. Notepad++ has a lot of features I like. But not too many editors offer automatic logging of changes to your files without having to setup a source control system. I was doing some work on my login.sql. I’m not doing anything crazy, but seeing what I had done in previous iterations was helpful. Now imagine how nice it would be to have this available for your l,000+ line scripts! Track your scripts as they change, no setup required! 3. Extend the Functionality Know SQL and XML? Wish SQL Developer did JUST a little bit more? Build your own extensions. You can have custom context menus and object pages in just a few minutes. This is an example of lazy developers writing code that write code. 4. Get Your Money’s Worth You’ve licensed Enterprise Edition. You got your Diagnostic and Tuning packs. Now start using them! Not everyone has access to Enterprise Manager, especially developers. But that doesn’t mean they don’t need help with troubleshooting and optimizing poorly performing SQL statements. ASH, AWR, Real-Time SQL Monitoring and the SQL Tuning Advisor are built into the Reports and Worksheet. Yes you could make the package calls, but that’s a whole lot of typing, and I’d rather just get to the results. 5. Profile, Debug, & Unit Testing PLSQL An Interactive Development Environment (IDE) built by the same folks that own the programming language (Hello – Oracle PLSQL!) should be complete. It should ‘hug’ the developer and empower them to churn out programs that work, run fast, and are easy to maintain. Write it, test it, debug it, and tune it. When you’re running your programs and you just want to see the data that’s returned, that shouldn’t require any special settings or workaround to make it happen either. Magic! And a whole lot more… I could go on and talk about the support for things like DataPump, RMAN, and DBMS_SCHEDULER, but you’re experts and you’re plenty busy. If you think SQL Developer is falling short somewhere, I want you to let us know about it.

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  • IIS not starting: The process cannot access the file because it is being used by another process

    - by Rick Strahl
    Ok, apparently a few people knew about this issue, but it is new to me and has caused me nearly an hour to track down today. What happened is that I’ve been working all day doing some final pre-deployment testing of several tools on my local dev machine. In the process I’ve been starting and stopping several IIS 7 Web sites. At some point I was done and just wanted to start my Default Web Site again and found this  little gem of an error message popping up: The process cannot access the file because it is being used by another process. (Exception from HRESULT: 0x80070020) A lot of headless running around ensued after this, trying to figure out why IIS wouldn’t start. Oddly some sites started right up, others didn’t. I killed INetInfo, all worker processes, tried IISReset a million times and even rebooted – all to no avail. What gives? Skype, you evil Bastard! As it turns out the culprit is – drum roll please - Skype!  What, you may ask, does Skype have to do with IIS and Web Requests? It looks like recent versions of Skype have an option to run over Port 80 and 443 to allow running over corporate firewalls. Which is actually a nice feature that lets Skype work just about anywhere. What’s not so cool is that IIS fails to start up when another application is already using the same port that a Web site is mapped to. In the case of my dev site that’d be port 80 and Skype was hogging it. To fix this issue you can stop Skype from using port 80 and 443 which quickly fixes the problem. Or stop Skype. Duh! To permanently fix the problem in Skype find the option on the Options | Connection tab and uncheck the Use port 80/443 option: Oddly I haven’t run into this problem even though my setup hasn’t changed in quite some time. It appears that it’s bad startup timing that causes this problem to occur. Whatever the circumstance was, Skype somehow ended up starting before IIS.  If Skype is started after IIS has started it will automatically opt for other ports and not use port 80 and so there’s no problem. It’s easy to demonstrate this behavior if you’re looking for it: Stop IIS Stop Skype Start Skype and make a test call Start IIS And voila your error is ready for you! This really shouldn’t be a problem except that it would be really nice if IIS could give a more helpful error message when it can fire up a site because a port is blocked. “The process cannot access a file” is really not a very helpful error message in this scenario… I/O port / file ah what the heck it’s all the same to Windows. Right! I’ve run into this situation quite a bit with other, albeit more obvious applications like running Apache on the local machine for testing and then trying to run an IIS application. Same situation,  although it’s been a while – pre IIS 7 and I think previous versions of IIS actually gave more useful error messages for port blockages and that would be helpful. On the way to figuring this out I ran into some pretty humorous forum posts though with people ragging on why the hell you would be running IIS. Or Skype. The misinformed paranoia police out in full force so to say :-). It’ll be nice to start running IIS Express once Visual Studio 2010 SP1 gets released. Anyway, no surprise that Skype didn’t jump out at me as the culprit right away and I was left fumbling for a while until the Internet came to the rescue. I’m not the first to have found this for sure – I posted a message on Twitter and dozens of people replied they’d run into this before as well. Seems worth mentioning again though – since I’m sure to forget that this happened in a year from now when I hit that same error. Maybe I’ll even find this blog post to remind me…© Rick Strahl, West Wind Technologies, 2005-2011Posted in IIS7  Windows  

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  • Thoughts on Thoughts on TDD

    Brian Harry wrote a post entitled Thoughts on TDD that I thought I was going to let lie, but I find that I need to write a response. I find myself in agreement with Brian on many points in the post, but I disagree with his conclusion. Not surprisingly, I agree with the things that he likes about TDD. Focusing on the usage rather than the implementation is really important, and this is important whether you use TDD or not. And YAGNI was a big theme in my Seven Deadly Sins of Programming series. Now, on to what he doesnt like. He says that he finds it inefficient to have tests that he has to change every time he refactors. Here is where we part company. If you are having to do a lot of test rewriting (say, more than a couple of minutes work to get back to green) *often* when you are refactoring your code, I submit that either you are testing things that you dont need to test (internal details rather than external implementation), your code perhaps isnt as decoupled as it could be, or maybe you need a visit to refactorers anonymous. I also like to refactor like crazy, but as we all know, the huge downside of refactoring is that we often break things. Important things. Subtle things. Which makes refactoring risky. *Unless* we have a set of tests that have great coverage. And TDD (or Example-based Design, which I prefer as a term) gives those to us. Now, I dont know what sort of coverage Brian gets with the unit tests that he writes, but I do know that for the majority of the developers Ive worked with and I count myself in that bucket the coverage of unit tests written afterwards is considerably inferior to the coverage of unit tests that come from TDD. For me, it all comes down to the answer to the following question: How do you ensure that your code works now and will continue to work in the future? Im willing to put up with a little efficiency on the front side to get that benefit later. Its not the writing of the code thats the expensive part, its everything else that comes after. I dont think that stepping through test cases in the debugger gets you what you want. You can verify what the current behavior is, sure, and do it fairly cheaply, but you dont help the guy in the future who doesnt know what conditions were important if he has to change your code. His second part that he doesnt like backing into an architecture (go read to see what he means). Ive certainly had to work with code that was like this before, and its a nightmare the code that nobody wants to touch. But thats not at all the kind of code that you get with TDD, because if youre doing it right youre doing the write a failing tests, make it pass, refactor approach. Now, you may miss some useful refactorings and generalizations for this, but if you do, you can refactor later because you have the tests that make it safe to do so, and your code tends to be easy to refactor because the same things that make code easy to write unit tests for make it easy to refactor. I also think Brian is missing an important point. We arent all as smart as he is. Im reminded a bit of the lesson of Intentional Programming, Charles Simonyis paradigm for making programming easier. I played around with Intentional Programming when it was young, and came to the conclusion that it was a pretty good thing if you were as smart as Simonyi is, but it was pretty much a disaster if you were an average developer. In this case, TDD gives you a way to work your way into a good, flexible, and functional architecture when you dont have somebody of Brians talents to help you out. And thats a good thing.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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  • Big Data – Basics of Big Data Architecture – Day 4 of 21

    - by Pinal Dave
    In yesterday’s blog post we understood how Big Data evolution happened. Today we will understand basics of the Big Data Architecture. Big Data Cycle Just like every other database related applications, bit data project have its development cycle. Though three Vs (link) for sure plays an important role in deciding the architecture of the Big Data projects. Just like every other project Big Data project also goes to similar phases of the data capturing, transforming, integrating, analyzing and building actionable reporting on the top of  the data. While the process looks almost same but due to the nature of the data the architecture is often totally different. Here are few of the question which everyone should ask before going ahead with Big Data architecture. Questions to Ask How big is your total database? What is your requirement of the reporting in terms of time – real time, semi real time or at frequent interval? How important is the data availability and what is the plan for disaster recovery? What are the plans for network and physical security of the data? What platform will be the driving force behind data and what are different service level agreements for the infrastructure? This are just basic questions but based on your application and business need you should come up with the custom list of the question to ask. As I mentioned earlier this question may look quite simple but the answer will not be simple. When we are talking about Big Data implementation there are many other important aspects which we have to consider when we decide to go for the architecture. Building Blocks of Big Data Architecture It is absolutely impossible to discuss and nail down the most optimal architecture for any Big Data Solution in a single blog post, however, we can discuss the basic building blocks of big data architecture. Here is the image which I have built to explain how the building blocks of the Big Data architecture works. Above image gives good overview of how in Big Data Architecture various components are associated with each other. In Big Data various different data sources are part of the architecture hence extract, transform and integration are one of the most essential layers of the architecture. Most of the data is stored in relational as well as non relational data marts and data warehousing solutions. As per the business need various data are processed as well converted to proper reports and visualizations for end users. Just like software the hardware is almost the most important part of the Big Data Architecture. In the big data architecture hardware infrastructure is extremely important and failure over instances as well as redundant physical infrastructure is usually implemented. NoSQL in Data Management NoSQL is a very famous buzz word and it really means Not Relational SQL or Not Only SQL. This is because in Big Data Architecture the data is in any format. It can be unstructured, relational or in any other format or from any other data source. To bring all the data together relational technology is not enough, hence new tools, architecture and other algorithms are invented which takes care of all the kind of data. This is collectively called NoSQL. Tomorrow Next four days we will answer the Buzz Words – Hadoop. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Big Data, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL

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  • TechEd Israel 2010 may only accept speakers from sponsors

    - by RoyOsherove
    A month or so ago, Microsoft Israel started sending out emails to its partners and registered event users to “Save the date!” – Micraoft Teched Israel is coming, and it’s going to be this november! “Great news” I thought to myself. I’d been to a couple of the MS teched events, as a speaker and as an attendee, and it was lovely and professionally done. Israel is an amazing place for technology and development and TechEd hosted some big names in the world of MS software. A couple of weeks ago, I was shocked to hear from a couple of people that Microsoft Israel plans to only accept non-MS teched speakers, only from sponsors of the event. That means that according to the amount that you have paid, you get to insert one or more of your own selected speakers as part of teched. I’ve spent the past couple of weeks trying to gather more evidence of this, and have gotten some input from within MS about this information. It looks like that is indeed the case, though no MS rep. was prepared to answer any email I had publicly. If they approach me now I’d be happy to print their response. What does this mean? If this is true, it means that Microsoft Israel is making a grave mistake – They are diluting the quality of the speakers for pure money factors. That means, that as a teched attendee, who paid good money, you might be sitting down to watch nothing more that a bunch of infomercials, or sub-standard speakers – since speakers are no longer selected on quality or interest in their topic. They are turning the conference from a learning event to a commercial driven event They are closing off the stage to the community of speakers who may not be associated with any organization  willing to be a sponsor They are losing speakers (such as myself) who will not want to be part of such an event. (yes – even if my company ends up sponsoring the event, I will not take part in it, Sorry Eli!) They are saying “F&$K you” to the community of MVPs who should be the people to be approached first about technical talks (my guess is many MVPs wouldn’t want to talk at an event driven that way anyway ) I do hope this ends up not being true, but it looks like it is. MS Israel had already done such a thing with the Developer Days event previouly held in Israel – only sponsors were allowed to insert speakers into the event. If this turns out to be true I would urge the MS community in Israel to NOT TAKE PART AT THIS EVENT in any form (attendee, speaker, sponsor or otherwise). by taking part, you will be telling MS Israel it’s OK to piss all over the community that they are quietly suffocating anyway. The MVP case MS Israel has managed to screw the MVP program as well. MS MVPs (I’m one) have had a tough time here in Israel the past couple of years. ever since yosi taguri left the blue badge ranks, there was not real community leader left. Whoever runs things right now has their eyes and minds set elsewhere, with the software MVP community far from mind and heart. No special MVP events (except a couple of small ones this year). No real MVP leadership happens here, with the MVP MEA lead (Ruari) being on a remote line, is not really what’s needed. “MVP? What’s that?” I’m sure many MS Israel employees would say. Exactly my point. Last word I’ve been disappointed by the MS machine for a while now, but their slowness to realize what real community means in the past couple of years really turns me off. Maybe it’s time to move on. Maybe I shouldn’t be chasing people at MS Israel begging for a room to host the Agile Israel user group. Maybe it’s time to say a big bye bye and start looking at a life a bit more disconnected.

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  • GRUB 2 problem after Mac OS X update

    - by vallllll
    I have a MacBook Pro in dual boot Mac OS X / Ubuntu 12.04 (Precise Pangolin). When I boot it I have a rEFIt menu, and I can chose between Mac OS X and Linux. A few days ago I have updated Mac OS X from 10.7 (Lion) to 10.8 (Mountain Lion) using a .dmg image provided by my company. Since then when I select Linux in rEFIt it says: No bootable device --insert boot disk and press any key I have tried going to rEFIt partitioning tool. This is what I got: As suggested in Mac OSX Mavericks update rEFIT broken I wanted to fix the issue the same way as AndrewM, but I don't have the option "MBR table must be updated". Then I booted on Ubuntu 12.04 CD, chose repair broken system, chose root patition /dev/sda6 as this is where my Ubuntu file system is. I got a shell, but I don't really know how to repair the poblem since if it was just Windows dual boot. A GRUB update would solve the issue, but here I don't know where the GRUB 2 is installed. Here are results from Parted, and it is a bit confusing for me as the Mac partition is the one with boot: As you can see the entry 1 is an EFI system partition and is the boot partition, so I wonder if I should install GRUB there or in sda6, which is the Ubuntu filesystem. I am not sure should I work on rEFIt shell or Ubuntu. Unfortunately, I don't remember where GRUB was before update. UPDATE: using same link above I have tried RoundSparrow hilltx answer and installed rEFInd, but the result is same.... still no bootable device when I select Linux. UPDATE 2: just used alternate CD again, mounted on /dev/sda6 and the ran update-grub. It seemed to wok and started listing all my kernels. But after rebooting several times still no bootable device when I select Linux in rEFInd. UDATE 3: Have tried to boot from Ubuntu cd and select "boot from first available filesystem. I got error and dropped to grub rescue shell. I even followed the indications on this link but was unable to boot as I tried to use sdb6 but no luck UPDATE 4 as per Rob Smith request here is out put from ls -l $(find /EFI -iname "*.efi") *MACOSX -rw-r--r--@ 1 root admin 55048 29 oct 17:44 /EFI/refind/drivers_x64/btrfs_x64.efi -rw-r--r--@ 1 root admin 38888 29 oct 17:44 /EFI/refind/drivers_x64/ext2_x64.efi -rw-r--r--@ 1 root admin 39304 29 oct 17:44 /EFI/refind/drivers_x64/ext4_x64.efi -rw-r--r--@ 1 root admin 43432 29 oct 17:44 /EFI/refind/drivers_x64/hfs_x64.efi -rw-r--r--@ 1 root admin 38984 29 oct 17:44 /EFI/refind/drivers_x64/iso9660_x64.efi -rw-r--r--@ 1 root admin 43656 29 oct 17:44 /EFI/refind/drivers_x64/reiserfs_x64.efi -rw-r--r--@ 1 root admin 175016 29 oct 17:44 /EFI/refind/refind_x64.efi -rw-rw-r-- 1 root admin 73232 7 mar 2010 /EFI/tools/dbounce.efi -rw-rw-r-- 1 root admin 763248 7 mar 2010 /EFI/tools/dhclient.efi -rw-rw-r-- 1 root admin 67024 7 mar 2010 /EFI/tools/drawbox.efi -rw-rw-r-- 1 root admin 71312 7 mar 2010 /EFI/tools/dumpfv.efi -rw-rw-r-- 1 root admin 84848 7 mar 2010 /EFI/tools/dumpprot.efi -rw-rw-r-- 1 root admin 472912 7 mar 2010 /EFI/tools/ed.efi -rw-rw-r-- 1 root admin 143856 7 mar 2010 /EFI/tools/edit.efi -rw-rw-r-- 1 root admin 1801008 7 mar 2010 /EFI/tools/ftp.efi -rw-r--r--@ 1 root admin 47848 29 oct 17:44 /EFI/tools/gptsync_x64.efi -rw-rw-r-- 1 root admin 320560 7 mar 2010 /EFI/tools/hexdump.efi -rw-rw-r-- 1 root admin 286384 7 mar 2010 /EFI/tools/hostname.efi -rw-rw-r-- 1 root admin 534416 7 mar 2010 /EFI/tools/ifconfig.efi -rw-rw-r-- 1 root admin 395344 7 mar 2010 /EFI/tools/loadarg.efi -rw-rw-r-- 1 root admin 587408 7 mar 2010 /EFI/tools/ping.efi -rw-rw-r-- 1 root admin 730416 7 mar 2010 /EFI/tools/pppd.efi -rw-rw-r-- 1 root admin 561360 7 mar 2010 /EFI/tools/route.efi -rw-rw-r-- 1 root admin 1961712 7 mar 2010 /EFI/tools/shell.efi -rw-rw-r-- 1 root admin 750224 7 mar 2010 /EFI/tools/tcpipv4.efi -rw-rw-r-- 1 root admin 4048 7 mar 2010 /EFI/tools/textmode.efi -rw-rw-r-- 1 root admin 320656 7 mar 2010 /EFI/tools/which.efi *LINUX

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  • Measuring Code Quality

    - by DotNetBlues
    Several months back, I was tasked with measuring the quality of code in my organization. Foolishly, I said, "No problem." I figured that Visual Studio has a built-in code metrics tool (Analyze -> Calculate Code Metrics) and that would be a fine place to start with. I was right, but also very wrong. The Visual Studio calculates five primary metrics: Maintainability Index, Cyclomatic Complexity, Depth of Inheritance, Class Coupling, and Lines of Code. The first two are figured at the method level, the second at (primarily) the class level, and the last is a simple count. The first question any reasonable person should ask is "Which one do I look at first?" The first question any manager is going to ask is, "What one number tells me about the whole application?" My answer to both, in a way, was "Maintainability Index." Why? Because each of the other numbers represent one element of quality while MI is a composite number that includes Cyclomatic Complexity. I'd be lying if I said no consideration was given to the fact that it was abstract enough that it's harder for some surly developer (I've been known to resemble that remark) to start arguing why a high coupling or inheritance is no big deal or how complex requirements are to blame for complex code. I should also note that I don't think there is one magic bullet metric that will tell you objectively how good a code base is. There are a ton of different metrics out there, and each one was created for a specific purpose in mind and has a pet theory behind it. When you've got a group of developers who aren't accustomed to measuring code quality, picking a 0-100 scale, non-controversial metric that can be easily generated by tools you already own really isn't a bad place to start. That sort of answers the question a developer would ask, but what about the management question; how do you dashboard this stuff when Visual Studio doesn't roll up the numbers to the solution level? Since VS does roll up the MI to the project level, I thought I could just figure out what sort of weighting Microsoft used to roll method scores up to the class level and then to the namespace and project levels. I was a bit surprised by the answer: there is no weighting. That means that a class with one 1300 line method (which will score a 0 MI) and one empty constructor (which will score a 100 MI) will have an overall MI of a respectable 50. Throw in a couple of DTOs that are nothing more than getters and setters (which tend to score 95 or better) and the project ends up looking really, really healthy. The next poor bastard who has to work on the application is probably not going to be singing the praises of its maintainability, though. For the record, that 1300 line method isn't a hypothetical, either. So, what does one do with that? Well, I decided to weight the average by the Lines of Code per method. For our above example, the formula for the class's MI becomes ((1300 * 0) + (1 * 100))/1301 = .077, rounded to 0. Sounds about right. Continue the pattern for namespace, project, solution, and even multi-solution application MI scores. This can be done relatively easily by using the "export to Excel" button and running a quick formula against the data. On the short list of follow-up questions would be, "How do I improve my application's score?" That's an answer for another time, though.

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  • ArchBeat Link-o-Rama Top 10 for August 2012

    - by Bob Rhubart
    The Top 10 most popular items shared via the OTN ArchBeat Facebook page for the month of August 2012. Now Available: Oracle SQL Developer 3.2 (3.2.09.23) New features include APEX listener, UI enhancements, and 12c database support. The Role of Oracle VM Server for SPARC in a Virtualization Strategy In this article, Matthias Pfutzner discusses hardware, desktop, and operating system virtualization, along with various Oracle virtualization technologies, including Oracle VM Server for SPARC. How to Manually Install Flash Player Plugin to see the Oracle Enterprise Manager Performance Page | Kai Yu So, you're a DBA and you want to check the Performance page in Oracle Enterprise Manager (11g or 12c). So you click the Performance tab and… nothing. Zip. Nada. The Flash plugin is a no-show. Relax! Oracle ACE Director Kai Yu shows you what you need to do to see all the pretty colors instead of that dull grey screen. Relationally Challenged (CX - CRM - EQ/RQ/CRQ) | Chris Warticki Self-proclaimed Oracle Support "spokesmodel" Chris Chris Warticki has some advice for those interested in Customer Relationship Management: "How about we just dumb it down, strip it to the core, keep it simple and LISTEN?! No more focus groups, no more surveys, and no need to gather more data. We have plenty of that. Why not just provide the customer what they are asking for?" Free WebLogic Server Course | Middleware Magic So you want to sharpen your Oracle WebLogic Server skills, but you prefer to skip the whole classroom bit and don't want to be bothered with dealing with an instructor? No problem! Oracle ACE Rene van Wijk, a prolific Middleware Magic blogger, has information on an Oracle WebLogic course you can take on your own time, at your own pace. Oracle VM VirtualBox 4.1.20 released Oracle VM VirtualBox 4.1.20 was just released at the community and Oracle download sites, reports the Fat Bloke. This is a maintenance release containing bug fixes and stability improvements. Optimizing OLTP Oracle Database Performance using Dell Express Flash PCIe SSDs | Kai Yu Oracle ACE Director Kai Yu shares resources based on "several extensive performance studies on a single node Oracle 11g R2 database as well as a two node 11gR2 Oracle Real Application clusters (RAC) database running on Dell PowerEdge R720 servers with Dell Express Flash PCIe SSDs on Oracle Enterprise Linux 6.2 platform." Oracle ACE sessions at Oracle OpenWorld With so many great sessions at this year's event, building your Oracle OpenWorld schedule can involve making a lot of tough choices. But you'll find that the sessions led by Oracle ACEs just might be the icing on the cake for your OpenWorld experience. MySQL Update: The Cleveland MySQL Meetup (Independence, OH) Oracle MySQL team member Benjamin Wood, a MySQL engineer and five year veteran of the MySQL organization, will speak at the Cleveland MySQL Meetup event on September 12. The presentation will include a MySQL 5.5 Overview, Oracle's Roadmap for MySQL, including specifics on MySQL 5.6, best practices and how to overcome development and operational MySQL challenges, and the new MySQL commercial extensions. Click the link for time and location information. Parsing XML in Oracle Database | Martijn van der Kamp Martijn van der Kamp's post deals with processing XML in PL/SQL code and processing the data into the database. Thought for the Day "Walking on water and developing software from a specification are easy if both are frozen." — Edward V. Berard Source: SoftwareQuotes.com

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