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• Is my computer slow due to lack of swap

  - by Kristian Jensen

  A few months ago, I installed Ubuntu 12.04 alongside with Windows 7 on my Asus EEE-PC 1015bx. It has a tendency of freezing and when trying to investigate I found that a swap partition of only 256 MB had been created. The Asus EEE-PC 1015bx is born with 1 GByte RAM only and it is not possible to add further or exchange the existing 1 GByte with a larger card. When looking at the system monitor, it looks like all swap is being utilized along with 70-75% of the RAM, even with very few applications running. Can the lack of much swap space be the reason for my computer running slowly and at times freezing? How can I add a swap partition? Or should I add a swap file instead? At the moment, I see two partitions when viewing the system monitor: one 28.6 GByte ext4 partition which must be the one containing Ubuntu and one 100 GByte fuseblk partition which I assume is the one holding Windows. It shows that I have 18.6 GByte free space on the ext4 partition. Can I "take a bite" from the ext4 partition and convert this into a swap partition? I was thinking something like 3 GBytes for swap considering my limited RAM. I hope that someone can guide me through. Thank you. 20th Oct 2012 - Further details Thank you for below answer which I find very useful. I am certainly considering switching to one of your suggested shells as I can see from the Internet that many have posted that these require much fewer resources than ubuntu. It seems to me that lubuntu is the perfect match for my very limited computer. I will have to wait a few days, though, as I am presently limited by a very slow and restricted Internet connection via satellite. But will lubuntu install as simply another shell replacing unity or will it replace ubuntu all together? Will the software that I have installed under ubuntu still be accessible in lubuntu? And can I return to ubuntu if required? Regarding the actual question of swap: When I run gparted, it shows me that there is one ntfs partition of 100 GBytes from where it boots and the before mentioned ext4 partition of 28.6 GBytes is not mentioned. Could it be that my ubuntu installation resides inside this 100 GBytes ntfs partiotion? And if so, can I take a bite of this for my swap partition? Realising that gparted is shown in Danish, I hope that you can make out what I mean. System monitoring shows below details: Once again I sincerely hope that you can help. Thank you.

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• T-SQL in Chicago – the LobsterPot teams with DataEducation

  - by Rob Farley

  In May, I’ll be in the US. I have board meetings for PASS at the SQLRally event in Dallas, and then I’m going to be spending a bit of time in Chicago. The big news is that while I’m in Chicago (May 14-16), I’m going to teach my “Advanced T-SQL Querying and Reporting: Building Effectiveness” course. This is a course that I’ve been teaching since the 2005 days, and have modified over time for 2008 and 2012. It’s very much my most popular course, and I love teaching it. Let me tell you why. For years, I wrote queries and thought I was good at it. I was a developer. I’d written a lot of C (and other, more fun languages like Prolog and Lisp) at university, and then got into the ‘real world’ and coded in VB, PL/SQL, and so on through to C#, and saw SQL (whichever database system it was) as just a way of getting the data back. I could write a query to return just about whatever data I wanted, and that was good. I was better at it than the people around me, and that helped. (It didn’t help my progression into management, then it just became a frustration, but for the most part, it was good to know that I was good at this particular thing.) But then I discovered the other side of querying – the execution plan. I started to learn about the translation from what I’d written into the plan, and this impacted my query-writing significantly. I look back at the queries I wrote before I understood this, and shudder. I wrote queries that were correct, but often a long way from effective. I’d done query tuning, but had largely done it without considering the plan, just inferring what indexes would help. This is not a performance-tuning course. It’s focused on the T-SQL that you read and write. But performance is a significant and recurring theme. Effective T-SQL has to be about performance – it’s the biggest way that a query becomes effective. There are other aspects too though – such as using constructs better. For example – I can write code that modifies data nicely, but if I haven’t learned about the MERGE statement and the way that it can impact things, I’m missing a few tricks. If you’re going to do this course, a good place to be is the situation I was in a few years before I wrote this course. You’re probably comfortable with writing T-SQL queries. You know how to make a SELECT statement do what you need it to, but feel there has to be a better way. You can write JOINs easily, and understand how to use LEFT JOIN to make sure you don’t filter out rows from the first table, but you’re coding blind. The first module I cover is on Query Execution. Take a look at the Course Outline at Data Education’s website. The first part of the first module is on the components of a SELECT statement (where I make you think harder about GROUP BY than you probably have before), but then we jump straight into Execution Plans. Some stuff on indexes is in there too, as is simplification and SARGability. Some of this is stuff that you may have heard me present on at conferences, but here you have me for three days straight. I’m sure you can imagine that we revisit these topics throughout the rest of the course as well, and you’d be right. In the second and third modules we look at a bunch of other aspects, including some of the T-SQL constructs that lots of people don’t know, and various other things that can help your T-SQL be, well, more effective. I’ve had quite a lot of people do this course and be itching to get back to work even on the first day. That’s not a comment about the jokes I tell, but because people want to look at the queries they run. LobsterPot Solutions is thrilled to be partnering with Data Education to bring this training to Chicago. Visit their website to register for the course. @rob_farley

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• Newbie worried about CASE tool.

  - by Jason Evans

  Hi there. I'm looking for some guidance on CASE tools and whether my concerns are valid. Recently I was in a meeting between my employer and an external software company which have a CASE tool currently in beta. They demonstrated this tool to us, showing how you build a UML model in Enterprise Architect (or something like it) and then, through their tool, that UML model is transformed into a Visual Studio project, with C# files, stored procedures for SQL Server, code for the data layer, WCF stuff, logging code and allsorts. Now, admittedly, I don't see the point in this, as in I'm not convinced it will save that much time (plus it feels like overkill). The tool authors said that a trial of the tool at another company had saved a team there 5 weeks of development time (from 6 weeks down to about 1 week) using this tool. I find the accuracy of that estimate hard to believe. My main concern is whether using this tool is going slow down my productivity. For example - Say I have a UML model which I built a VS solution from. Now, I want to rename a class method to something else; will this mean having to update the UML model first and then rebuilding the code? Is this how case tools normally work? Something I will need to check with the authors is the structure of the generated VS solution. I like the Domain Driven Design way of project structure - Infrstructure, Services, Model, etc. I doubt very much this tool will do that. Also, I've been playing around with Entity Framework Code First and think it's a great way to build the data model. I have nice repositories, unit of work classes and other design patterns that work well with EF. I have data anootations and stuff like that working great. By not having EF (the CASE tool uses it's own data layer code) I'm concerned that this tool's data layer code might not be a nice to integrate in the UoW pattern, repositories, etc. This I will need to verify when I get a closer look at the generated code. What are other people's experiences with CASE tools? Am I being paranoid about nothing? Am I being unfair - are my negativities unfounded? EDIT: I like to use TDD/BDD for building my code, and using a CASE tool looks like it will make this difficult. Again, any feedback on this would be great. Cheers. Jas.

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• links for 2010-04-22

  - by Bob Rhubart

  Barry N. Perkins: Unique Business Value vs. Unique IT "Some solutions may look good today, solving a budget challenge by reducing cost, or solving a specific tactical challenge, but result in highly complex environments, that may be difficult to manage and maintain and limit the future potential of your business. Put differently, some solutions might push today's challenge into the future, resulting in a more complex and expensive solution." -- Barry N. Perkins, VP Oracle Modernization & Oracle Integrated Solutions (tags: oracle otn enterprisearchitecture modernization) Paul Homchick: The Information Driven Value Chain - Part 2 Paul Homchick continues his series with a look "at the way investments have been made in enterprise software in an effort to create and manage value, and how systems are moving from a controlled-process approach design towards gathering and using dynamically using information." (tags: oracle otn enterprisearchitecture) @vambenepe: The battle of the Cloud Frameworks: Application Servers redux? "The battle of the Cloud Frameworks has started," says William Vambenepe, "and it will look a lot like the battle of the Application Servers which played out over the last decade and a half." (tags: oracle otn cloud frameworks appserver) @ORACLENERD: COLLABORATE: Day 4 Wrap Up Oraclenerd feesses up: "The day started out with the realization that I pulled off the best (COLLABORATE - self annointed) prank ever. Twitter was...all atwitter about the fact that Mark Rittman was Oracle's Person of the Year. Of course it wasn't true. If you look at the picture, you'll realize that he's wearing exactly the same clothes in the magazine cover as he is in real life." (tags: collaborate2010 oracleace) Oracle's Hal Stern at Cloud Expo: "We've Moved from 'What' to 'How'" | Cloud Computing Journal "Hal also spoke a bit about building 'a sustainable IT model.' By this, he said he didn't mean the various Green IT and similar efforts that 'are all about data center efficiency. I think the operational model is just as important. Many enterprises are managing a tremendous amount of complexity, and it's hard to make this sustainable.'" -- Cloud News Desk (tags: oracle cloud cloudexpo halstern) @ORACLENERD: COLLABORATE: The Beach Party "Then tiki statues somehow were incorporated into various dances" -- Oracle ACE Chet "oraclenerd" Justice (tags: 0racle otn oracleace collaborate2010 oaug ioug lasvegas) David Andrews: Collaborate Day Two "Collaborate 2010 has focused on helping attendees understand what is already available and how to make more effective use of it. This does not sound exciting but it is extremely valuable. Most customers use only a small fraction of the capability of the products they already own. Helping them understand all the additional things they could be doing without buying anything more is very valuable." -- David Andrews (tags: oracle oaug collaborate2010 ioug)

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• IE9, HTML5 and truck load of other stuff happening around the web

  - by Harish Ranganathan

  First of all, I haven’t been updating this blog as regularly as it used to be.  Primarily, due to the fact was I was visiting a lot of cities talking about SharePoint, Web Matrix, IE9 and few other stuff.  IE9 is my new found love and I simply think we have done great work in improving the browser and browsing experiences for our users. This post would talk about IE, general things happening around the web and few misconceptions around IE (I had earlier written about IE8 and common myths When you think about the way web has transformed, its truly amazing.  Rewind back to late 90s and early 2000s, web was a luxury.  There were lot of desktop applications running around and web applications was starting to pick up.  Primarily reason was not a lot of folks were into web development and the areas of web were confined to HTML and JavaScript.  CSS was around here and there but no one took it so seriously.  XML, XSLT was fast picking up and contributed to decent web development techniques. So as a web developer all we had to worry about was, building good looking websites which worked well with IE6 and occasionally with Safari.  Firefox was  not even in the picture then and so was Chrome.  But with the various arms of W3C consortium and other bodies working actively on stuff like CSS, SVG and XHTML, few more areas came into picture when it comes to browsers supporting standards.  IE6 for sure wasn’t up to the speed and the main issue we were tackling then was privacy and piracy.  We did invest a lot of our efforts to curb piracy and one of the steps into it was that, IE7 the next version of IE would install only on genuine windows machines.  What this means, is that, people who were running pirated windows xp knowingly/unknowingly could not install IE7 and the limitations of IE6 really hurt them.  One more thing of importance is that, if you were running pirated windows, lots of chances that you didn’t get the security updates and thereby were vulnerable to run viruses/trojans on your system. Many of them actually block using IE in the first place and make it difficult to browse.  SP2 came as a big boon but again was there only for genuine windows machines. With Firefox coming as a free install and also heavily pushed by Google then, it was natural that people would try an alternative.  By then, we had started working on IE8 supporting the best standards (note HTML5, CSS 2.1 and other specs were then work in progress.  they are still) Later, Google in their infinite wisdom realized that with Firefox they were going nowhere and they released Chrome.  Now, they heavily push Chrome even for Firefox users, which is natural since its their browser. In the meanwhile, these browsers push their updates as mandatory and therefore have a very short lifecycle to add enhancements and support for stuff like CSS etc., Meanwhile, when IE8 came out, it really was the best standards supported browser and a lot of people saw our efforts in improving our browser. HTML5 is the buzz word in the industry and there is a lot of noise being made by many browsers claiming their support for it.  IE8 doesn’t have much support for HTML5.  But, with IE9 Beta, we have great support for many of HTML5 specifications.  Note that, HTML5 is still work under progress and one of the board of members working on the spec has mentioned that these specs might change and relying on them heavily is dangerous.  But, some of the advances such as video tag, etc., are indeed supported in IE9 Beta.  IE9 Beta also has full hardware acceleration support which other browsers don’t have. IE8 had advanced security features such as smartscreen filter, in-private browsing, anti-phishing and a lot of other stuff.  IE9 builds on top of these with the best in town security standards as well as support for HTML5, CSS3, Hardware acceleration, SVG and many other advancements in browser.  Read more at http://www.beautyoftheweb.com/#/highlights/html5  To summarize, IE9 Beta is really innovative and you should try it to believe what it provides.  You can visit http://www.beautyoftheweb.com/  to install as well as read more on this. Cheers !!!

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• Part 9: EBS Customizations, how to track

  - by volker.eckardt(at)oracle.com

  In the previous blogs we were concentrating on the preparation tasks. We have defined standards, we know about the tools and techniques we will start with. Additionally, we have defined the modification strategy, and how to handle such topics best. Now we are ready to take the requirements! Such requirements coming over in spreadsheets, word files (like GAP documents), or in any other format. As we have to assign some attributes, we start numbering all that and assign a short name to each of these requirements (=CEMLI reference). We may also have already a Functional person assigned, and we might involve someone from the tech team to estimate, and we like to assign a status such as 'planned', 'estimated' etc. All these data are usually kept in spreadsheets, but I would put them into a database (yes, I am from Oracle :). If you don't have any good looking and centralized application already, please give a try with Oracle APEX. It should be up and running in a day and the imported sheets are than manageable concurrently!  For one of my clients I have created this CEMLI-DB; in between enriched with a lot of additional functionality, but initially it was just a simple centralized CEMLI tracking application. Why I am pointing out again the centralized method to manage such data? Well, your data quality will dramatically increase, if you let your project members see (also review and update) "your" data.  APEX allows you to filter, sort, print, and also export. And if you can spend some time to define proper value lists, everyone will gain from. APEX allows you to work in 'agile' mode, means you can improve your application step by step. Let's say you like to reference a document, or even upload the same, you can do that. Or, you need to classify the CEMLIs by release, just add this release field, same for business area or CEMLI type. One CEMLI record may then look like this: Prepare one or two (online) reports, to be ready to present your "workload" to the project management. Use such extracts also when you work offline (to prioritize etc.). But as soon as you are again connected, feed the data back into the central application. Note: I have combined this application with an additional issue tracker.  Here the most important element is the CEMLI reference, which acts as link to any other application (if you are not using APEX also as issue tracker :).  Please spend a minute to define such a reference (see blog Part 8: How to name Customizations).   Summary: Building the bridge from Gap analyse to the development has to be done in a controlled way. Usually the information is provided differently, but it is suggested to collect all requirements centrally. Oracle APEX is a great solution to enter and maintain such information in a structured, but flexible way. APEX helped me a lot to work with distributed development teams during the complete development cycle.

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• Programming Windows 8 Apps with HTML, CSS, and JavaScript - All you need in one title

  It took me a while to work through the 800+ pages of this title. And yes, I really mean working not reading... Since the release of Windows 8 it should be obvious to any Windows software developer that there are new ways to develop, deploy and market applications for a broader audience. Interestingly, Microsoft started to narrow the technological gap between the various platforms - desktop, web, smartphone and XBox - and development of modern apps with HTML, CSS and JavaScript couldn't be easier. Kraig covers all facets of modern Windows 8 apps from the basic building blocks and project templates in Visual Studio 2012 over to the thoughtful use of specific APIs to finally proper deployment in the App Store and potential monetization. The organisation of the book is lied out like step by step instructions or a tutorial. Kraig literally takes the reader by the hand and explains in detail in his examples about the reasons, the pros, and the cons of a certain way of implementation. Thanks to cross-references to other chapters he leaves the choice to the reader to dig deeper right now or to catch up at some time later. Personally, I have to admit that I really enjoyed the relaxed writing style. App development is not dust-dry rocket science and it should be joyful to learn about new technologies. And thanks to the richness of the various chapters and samples you could easily adapt and transfer the knowledge gained in this title to other platforms like Windows Phone 8. And last but not least: The ebook is freely available at Amazon, Microsoft Press and O'Reilly. Don't think about it, just get the book. Now. Update: I already mentioned this title in other blog entries which are related to Microsoft certification. Feel free to read on and to discover more online resources: Learning content for MCSDs: Web Applications and Windows Store Apps using HTML5 More content for MCSDs: Web Applications and Windows Store Apps using HTML5 O'Reilly offers free webcasts on their site, too. And in case that you would like to know more about Kraig's book and his experience with various development teams, please checkout this one: Zero to App in Two Weeks: Programming Windows 8 Apps in HTML, CSS, and JavaScript. The recording should be available soon.

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• Game of Phones

  - by Carlos Chang

  Game  of  Phones There’s an excellent DZone article titled: 2014 Guide to Mobile Development. It’s loaded with excellent information including some results from a mobile related survey to more than 1000 IT professionals. Without giving away too much, these highlights should convince you to read the entire article.  Web and Hybrid apps are gaining tons of traction particularly in the enterprise. If you want to better understand the differences between Web, Native and Hybrid, this article has you covered. Enterprise developers are increasingly more interested in cross platform tools. Makes sense right?  I mean, unless you have infinite resources (e.g. Facebook) and can afford to write native apps to every platform, finding something that can meet your needs for iOS and Android makes sense.  And toss in the possibility of Windows Phone …and oh, just to be current, the addition of Apple’s new mobile language, Swift, to add to Objective C.. and oh boy.  Why not check out cross platform tools? BTW, don’t  forget testing on each platform, and maintenance and the next versions of the app. It’s not one and done. If you’re successful, you’re never done. Various mobile vendors are represented and many provide some great information.  Oracle's own Suhas Uliyar, VP of Mobile Strategy, represented with some great insights into the challenges of mobile back end integration (SOA, mBaaS, etc.) and moving from "mobile first" to a mobile plus world. BTW, Suhas was recently named Top 100 Wireless Technology Experts for 2014 by Today's Wireless World magazine.  And if your not yet convinced, DZone did a very nice job with their mobile infographic stylized after the insanely popular series, Game of Thrones.  Even though there were no dragons illustrated, worth the price of admission just for that.   Check it out here.

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• links for 2011-02-09

  - by Bob Rhubart

  Tech Cast Live - Java and Oracle, One Year Later - February 15th 10AM PST (Oracle Technology Network Blog (aka TechBlog)) (tags: ping.fm) The impact of IT decisions on organizational culture - O'Reilly Radar "While I believe we recognize the limiting qualities of IT decisions, I'd suggest we've insufficiently studied the degree to which those decisions in aggregate can have a large influence on organizational culture." - Jonathan Reichental, Ph.D. (tags: ITgovernance organizationalculture enterprisearchitecture) Women "computers" of World War II - Boing Boing "Before it came to mean laptops, PCs, or even room-sized machines, "computer" was what you called a person who did mathematical calculations for a living. That job was vitally important during World War II. And, like many vital jobs on the homefront, it was turned over to women..." (tags: computers history worldwar2) InfoQ: Book Excerpt and Interview: 100 SOA Questions Asked and Answered A new "100 SOA Questions Asked and Answered " book by Kerrie Holley and Ali Arsanjani provides a deep insight into SOA covering a wide spectrum of topics from SOA basics to its business and organizational impact, to SOA methods and architecture to SOA future. InfoQ spoke with Kerrie Holley and Ali Arsanjani about their book. (tags: ping.fm) @myfear: GlassFish City - Another view onto your favorite application server Oracle ACE Director Markus Eisele runs GlassFish through CodeCity. (tags: oracle otn oracleace glassfish codecity) The Ron Batra Blog: Technology Whispers: Upcoming Presentations Oracle ACE Director Ron Batra shares details on upcoming presentations at OAUG events in the US and Dubai. (tags: oaug c11 oracle otn oracleace) Free ADF Training Event in the UK (Grant Ronald's Blog) Gobsmack survivor Grant Ronald with the details on an Oracle ADF training session he'll conduct on 11 May 2011 at the UK Oracle office in Reading. (tags: oracle otn adf) Java Spotlight Episode 16 - Richar Bair - The Java Spotlight Podcast The latest Java Spotlight podcast features an interview with Java Client Architect Richar Bair. (tags: oracle java podcast) Stewart Bryson: OBIEE 11g Migrations "[Rittman Mead's] Mark and Venkat have covered OBIEE migration methodologies in the past (see here, here and here), but I decided to throw my hat in the ring on the subject, as I had to develop a methodology for a client recently and wanted to share my experiences." - Stewart Bryson (tags: oracle otn obiee businessintelligence) Dr. Chris Harding: The golden thread of interoperability | Open Group Blog "There are so many things going on at every Conference by The Open Group that it is impossible to keep track of all of them, and this week’s Conference in San Diego, California, is no exception. The main themes are Cybersecurity, Enterprise Architecture, SOA and Cloud Computing." - Dr. Chris Harding (tags: entarch soa interoperability cloud) Marc Kelderman: OSB: Creating an Asynchronous / Fire-Forget WebService Call Creating a fire-and-forget call via OSB is simple, according to solution architect Marc Kelderman. "The trick is to send NO response back to the caller, only an HTTP response code, 200 or any other." (tags: oracle otn servicebus)

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• Data Connection Library in SharePoint Server 2010

  - by Wayne

  What is a Data Connection Library in SharePoint Server 2010? A Data Connection Library in Microsoft SharePoint Server 2010 is a library that can contain two kinds of data connections: an Office Data Connection (ODC) file or a Universal Data Connection (UDC) file. Microsoft InfoPath 2010 uses data connections that comply with the Universal Data Connection (UDC) file schema and typically have either a *.udcx or *.xml file name extension. Data sources described by these data connections are stored on the server and can be used in standard form templates and browser-enabled form templates. How to create a SharePoint Server Data Connection Library? 1. Browse to a SharePoint Server 2010 site on which you have at least Design permissions. If you are on the root site, create a new site before you continue with the next step. 2. On the Site Actions menu, click More Options. 3. On the Create page, click Library under Filter By, and then click Data Connection Library. 4. On the right side of the Create page, type a name for the library, and then click the Create button. 5. Copy the URL of the new data connection library. How to create a new data connection file in InfoPath? 1. Open InfoPath Designer 2010, click Blank Form, and then click Design Form. 2. On the Data tab, click Data Connections, and then click Add. 3. In the Data Connection Wizard, click Create a new connection to, click Receive data, and then click Next. 4. Click the kind of data source that you are connecting to, such as Database, Web service, or SharePoint library or list, and then click Next. 5. Complete the remaining steps in the Data Connection Wizard to configure your data connection, and then click Finish to return to the Data Connections dialog box. 6. In the Data Connections dialog box, click Convert to Connection File. 7. In the Convert Data Connection dialog box, enter the URL of the data connection library that you previously copied (delete "Forms/AllItems.aspx" and anything following it from the URL), enter a name for the data connection file at the end of the URL, and then click OK. It will take a few moments to convert and save the data connection file to the library. 8. Confirm that the data connection was converted successfully by examining the Details section of the Data Connections dialog box while the name of the converted data connection is selected. 9. Browse to the SharePoint data connection library, click the drop-down next to the name of the data connection, click Approve/Reject, click Approved, and then click OK. Take advantage of SharePoint Data Connection Library and other useful features of SharePoint family of products that include, SharePoint Foundation 2010, MOSS 2007 and free SharePoint templates or web parts.

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• How valuable are you to your organization?

  - by Lance Shaw

  I don't know about you but I find it easy to get bogged down with the daily list of tasks and deliverables.  We all have lots to do and it all seems to be due tomorrow.  If you are reading this blog, than your to-do list is almost certainly filled with tasks related to the management, processing and publishing of information.  As we get mired in the daily routine of making sure that the content management needs of the organizations are met, we can easily lose sight of the value that we bring.  After all, if information and content is the lifeblood of our organizations, then surely maintaining the healthy flow of that information has real value.  But how can you measure that value and bring it forward on your résumé or your list of achievements in time for your next performance review? The AIIM organization has spent a lot of time recently researching the value of certification for "information professionals".  When it comes to enterprise content management (ECM) there are many areas of specialization including records management, content archivist, digital asset manager, content librarian and more.  Specialization can clearly drive up your value but it can also lock you into a narrow niche area of focus.  AIIM has found that what companies also need is someone that can apply their knowledge of how information is managed within the operational scope of the business in order to drive real, measurable strategic value.  When you can showcase the value of a broader, business-wide mindset to your management, you have more opportunity to make professional progress and drive real growth where it counts, your paycheck.   We here on the Oracle WebCenter team partnered with AIIM on the research they performed around the value of an information professional certification program. In a webinar this week, Doug Miles of AIIM and I will be talking about the results of that recent survey and what it is going to mean in the future to be recognized as a "Certified Information Professional" (CIP).  Oracle sponsored this research to help individuals and companies understand the value of enterprise content management and what it means across the entire organization. I hope you will join us. If any of us were stopped in the street and were asked about it, I bet most of us would think of ourselves as an "Information Professional".  Now we have a way to actually prove it!  There's only one downside that I can see...  you will have to get your business cards updated to include the "CIP" acronym after your name.  I think you will agree that is a price worth paying!

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• Canonicalization of single, small pages like reviews or product categories [SEO]

  - by Valorized

  In general I pretty much like the idea of canonicalization. And in most cases, Google explains possible procedures in a clear way. For example: If I have duplicates because of parameters (eg: &sort=desc) it's clear to use the canonical for the site, provided the within the head-tag. However I'm wondering how to handle "small - no to say thin content - sites". What's my definition of a small site? An Example: On one of my main sites, we use a directory based url-structure. Let's see: example.com/ (root) example.com/category-abc/ example.com/category-abc/produkt-xy/ Moreover we provide on page, that includes all products example.com/all-categories/ (lists all products the same way as in the categories) In case of reviews, we use a similar structure: example.com/reviews/product-xy/ shows all review for one certain product example.com/reviews/product-xy/abc-your-product-is-great/ shows one certain review example.com/reviews/ shows all reviews for all products (latest first) Let's make it even more complicated: On every product site, there are the latest 2 reviews at the end of the page. So you see, a lot of potential duplicates. Q1: Should I create canonicals for a: example.com/category-abc/ to example.com/all-categories/ b: example.com/reviews/product-xy/abc-your-product-is-great/ to example.com/reviews/product-xy/ or to example.com/review/ or none of them? Q2: Can I link the collection of categories (all-categories/) and collection of all reviews (reviews/ and reviews/product-xy/) to the single category respectively to the single review. Example: example.com/reviews/ includes - let's say - 100 reviews. Can I somehow use a markup that tells search engines: "Hey, wait, you are now looking at a collection of 100 reviews - do not index this collection, you should rather prefer indexing every single review as a single page!". In HTML it might be something like that (which - of course - does not work, it's only to show you what I mean): <div class="review" rel="canonical" href="http://example.com/reviews/product-xz/abc-your-product-is-great/">HERE GOES THE REVIEW</div> Reason: I don't think it is a great user experience if the user searches for "your product is great" and lands on example.com/reviews/ instead of example.com/reviews/product-xy/abc-your-product-is-great/. On the first site, he will have to search and might stop because of frustration. The second result, however, might lead to a conversion. The same applies for categories. If the user is searching for category-Z, he might land on the all-categories page and he has to scroll down to the (last) category, to find what he searched for (Z). So what's best practice? What should I do? Thank you for your help!

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• Commit Review Questions

  - by Wes McClure

  Note: in this article when I refer to a commit, I mean the commit you plan to share with the rest of the team, if you have local commits that you plan to amend/combine, I am referring to the final result. In time you will find these easier to do as you develop, however, all of these are valuable before checking in!  The pre commit review is a nice time to polish what might have been several hours of intense work, during which these things were the last things on your mind!  If you are concerned about losing your work in the process of responding to these questions, first do a check-in and amend it as you go (assuming you are using a tool such as git that supports this), rolling the result into one nice commit for everyone else.  Did you review your commit, change by change, with a diff utility? If not, this is a list of reasons why you might want to start! Did you test your changes? If the test is valuable to be automated, is it? If it’s a manual testing scenario, did you at least try the basics manually? Are the additions/changes formatted consistently with the rest of the project? Lots of automated tools can help here, don’t try to manually format the code, that’s a waste of time and as a human you will fail repeatedly. Are these consistent: tabs versus spaces, indentation, spacing, braces, line breaks, etc Resharper is a great example of a tool that can automate this for you (.net) Are naming conventions respected? Did you accidently use abbreviations, unless you have a good reason to use them? Does capitalization match the conventions in the project/language? Are files partitioned? Sometimes we add new code in existing files in a pinch, it’s a good idea to split these out if they don’t belong ie: are new classes defined in new files, if this is something your project values? Is there commented out code? If you are removing an existing feature, get rid of it, that is why we have VCS If it’s not done yet, then why are you checking it in? Perhaps a stash commit (git)? Did you leave debug or unnecessary changes? Do you understand all of the changes? http://geekswithblogs.net/wesm/archive/2012/04/11/programming-doesnrsquot-have-to-be-magic.aspx Are there spelling mistakes? Including your commit message! Is your commit message concise? Is there follow up work? Are there tasks you didn’t write down that you need to follow up with? Are readability or reorganization changes needed? This might be amended into the final commit, or it might be future work that needs added to the backlog. Are there other things your team values that you should review?

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• SQL SERVER – How to Roll Back SQL Server Database Changes

  - by Pinal Dave

  In a perfect scenario, no unexpected and unplanned changes occur. There are no unpleasant surprises, no inadvertent changes. However, even with all precautions and testing, there is sometimes a need to revert a structure or data change. One of the methods that can be used in this situation is to use an older database backup that has the records or database object structure you want to revert to. For this method, you have to have the adequate full database backup and a tool that will help you with comparison and synchronization is preferred. In this article, we will focus on another method: rolling back the changes. This can be done by using: An option in SQL Server Management Studio T-SQL, or ApexSQL Log The first two solutions have been described in this article The disadvantages of these methods are that you have to know when exactly the change you want to revert happened and that all transactions on the database executed in a specific time range are rolled back – the ones you want to undo and the ones you don’t. How to easily roll back SQL Server database changes using ApexSQL Log? The biggest challenge is to roll back just specific changes, not all changes that happened in a specific time range. While SQL Server Management Studio option and T-SQL read and roll forward all transactions in the transaction log files, I will show you a solution that finds and scripts only the specific changes that match your criteria. Therefore, you don’t need to worry about all other database changes that you don’t want to roll back. ApexSQL Log is a SQL Server disaster recovery tool that reads transaction logs and provides a wide range of filters that enable you to easily rollback only specific data changes. First, connect to the online database where you want to roll back the changes. Once you select the database, ApexSQL Log will show its recovery model. Note that changes can be rolled back even for a database in the Simple recovery model, when no database and transaction log backups are available. However, ApexSQL Log achieves best results when the database is in the Full recovery model and you have a chain of subsequent transaction log backups, back to the moment when the change occurred. In this example, we will use only the online transaction log. In the next step, use filters to read only the transactions that happened in a specific time range. To remove noise, it’s recommended to use as many filters as possible. Besides filtering by the time of the transaction, ApexSQL Log can filter by the operation type: Table name: As well as transaction state (committed, aborted, running, and unknown), name of the user who committed the change, specific field values, server process IDs, and transaction description. You can select only the tables affected by the changes you want to roll back. However, if you’re not certain which tables were affected, you can leave them all selected and once the results are shown in the main grid, analyze them to find the ones you to roll back. When you set the filters, you can select how to present the results. ApexSQL Log can automatically create undo or redo scripts, export the transactions into an XML, HTML, CSV, SQL, or SQL Bulk file, and create a batch file that you can use for unattended transaction log reading. In this example, I will open the results in the grid, as I want to analyze them before rolling back the transactions. The results contain information about the transaction, as well as who and when made it. For UPDATEs, ApexSQL Log shows both old and new values, so you can easily see what has happened. To create an UNDO script that rolls back the changes, select the transactions you want to roll back and click Create undo script in the menu. For the DELETE statement selected in the screenshot above, the undo script is: INSERT INTO [Sales].[PersonCreditCard] ([BusinessEntityID], [CreditCardID], [ModifiedDate]) VALUES (297, 8010, '20050901 00:00:00.000') When it comes to rolling back database changes, ApexSQL Log has a big advantage, as it rolls back only specific transactions, while leaving all other transactions that occurred at the same time range intact. That makes ApexSQL Log a good solution for rolling back inadvertent data and schema changes on your SQL Server databases. Reference: Pinal Dave (http://blog.sqlauthority.com)Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL Tagged: ApexSQL

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• Teacher demands excessive/unjustified use of Design Patterns

  - by SoboLAN

  I study computer science and I have a class called "Programming Techniques". Its purpose is to teach (us) good object oriented design principles. During the semester we have homeworks, programs that we must write to demonstrate what we've learned. The lab assistant demands for each of these homeworks that specific design patterns should be used. For example, the current homework is an application used for processing customer orders. We are demanded to use either "Factory Method" or "Abstract Factory" design patterns for this. It gets even worse: at the end of the semester we must write a program (something more complex) that must use at least one creational pattern, at least one structural pattern and at least one behavioural pattern. Is it normal to demand this ? I mean, forcing us to design our programs in such a way that a specific design pattern makes sense is just beyond what I consider ok. If I'm a car mechanic and have a huge tool box, then I will use a certain tool from that box if and when the situation demands it. Not more, not less. If my design of the application doesn't demand at all the use of "Abstract Factory" (for example), then why should I implement it ? I'm not sure yet if the senior lecturer agrees with what the lab assistant is demanding, but I want to talk to him about it and I need solid arguments to do so. How should I approach this problem with him ? PS: I'm sure there must be a better way to teach us these things. Maybe making us each week read about 3 design patterns and the next week giving us a test with small but specific programming or architectural situations/problems. The goal in that test would be to identify what design patterns would make sense and how they could be implemented. This way, he can see if we understand them. EDIT: These homeworks are not just 100-line programs, they have quite a lot of requirements and are fairly complicated. This is the reason we have about 2 - 3 weeks of deadline for each of them. I agree that practicing this is the best way to learn. But shouldn't smaller programs/applications be used for this ? Something just for demonstrating purposes. Not big programs with lots of requirements/classes/etc.

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• Can I safely delete the Ubuntu 12.04 partition and use the unallocated space for my Elementary OS?

  - by d4ryl3

  I have this setup: I've decided to switch to Elementary OS Luna (fork of Ubuntu 12.04) as my main Linux distro. Now I need to delete my Ubuntu partition so I could add capacity to my eOS which only has 10Gb. Currently my eOS is in /dev/sda9, and Ubuntu in /dev/sda8/. I forgot where my bootloader is installed, so I ran bootinfoscript, which returned this: `============================= Boot Info Summary: =============================== = Grub2 (v1.99) is installed in the MBR of /dev/sda and looks at sector 1 of the same hard drive for core.img. core.img is at this location and looks in partition 94 for . sda1: __________________________________________ File system: ntfs Boot sector type: Windows Vista/7: NTFS Boot sector info: No errors found in the Boot Parameter Block. Operating System: Boot files: /bootmgr /Boot/BCD sda2: __________________________________________ File system: ntfs Boot sector type: Windows Vista/7: NTFS Boot sector info: No errors found in the Boot Parameter Block. Operating System: Windows 7 Boot files: /bootmgr /Boot/BCD /Windows/System32/winload.exe sda3: __________________________________________ File system: ntfs Boot sector type: Windows Vista/7: NTFS Boot sector info: No errors found in the Boot Parameter Block. Operating System: Boot files: /bootmgr /boot/bcd sda4: __________________________________________ File system: Extended Partition Boot sector type: - Boot sector info: sda5: __________________________________________ File system: ntfs Boot sector type: Windows Vista/7: NTFS Boot sector info: According to the info in the boot sector, sda5 starts at sector 2048. Operating System: Boot files: sda6: __________________________________________ File system: swap Boot sector type: - Boot sector info: sda7: __________________________________________ File system: ext4 Boot sector type: Grub2 (v1.99) Boot sector info: Grub2 (v1.99) is installed in the boot sector of sda7 and looks at sector 851823520 of the same hard drive for core.img, but core.img can not be found at this location. Operating System: Boot files: /grub/grub.cfg /extlinux/extlinux.conf sda8: __________________________________________ File system: ext4 Boot sector type: Grub2 (v1.99) Boot sector info: Grub2 (v1.99) is installed in the boot sector of sda8 and looks at sector 860224256 of the same hard drive for core.img. core.img is at this location and looks for (,msdos9)/boot/grub on this drive. Operating System: Ubuntu 13.04 Boot files: /etc/fstab sda9: __________________________________________ File system: ext4 Boot sector type: - Boot sector info: Operating System: elementary OS Luna Boot files: /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img` I need advice as to how to proceed. I mean, could I simply delete /dev/sda7/ and /dev/sda8/? Please help, thank you.

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• SQL – Business Intelligence: Derive Data or Information?

  - by Pinal Dave

  We all know the value of information in our lives. Whether it’s a personal decision or a business initiated one, people need it. But the question is: who is to make the distinction between data and information? We all come across a whole lot of data daily, that may be significant or not. We filter what’s required and forget about the rest. Information is filtered and distilled data. Filtering and distillation can also alter its actual meaning and natural state. Therefore, in this blog we discover some ways to ensure that we’re using business intelligence derived from the right information for making critical management decisions. Four key questions managers must ask themselves before making a decision: 1. Am I working with data or information? 2. What is it’s context? 3. How recent is it? 4. How was it derived or what is the source? The first question is probably the most important. You must know what you’re dealing with here. If you see use of adjectives and conclusions drawn, it’s information. Not raw data. You very next concern must be whether this is guised to present a particular viewpoint or perspective. It makes a lot of difference if you take a decision based on someone’s propaganda to distort real facts. Therefore, the context and the intentions of the distillation process must be clear to you. The next consideration is whether data is recent enough to hold any value. Since it has a very short shelf life, you must ensure that its context and value is not lost out of time. The last and the most important consideration is how was it derived in the first place. The observer effect is what calls the shots here. The source can change the context to a great extent if the collection methodology  and purpose is not clear. Gathering intelligence for decision making requires users to be keen observers and not take the information provided on its face value alone. These probing questions will allow you to make sure that you’re working with clean and accurate data devoid of any influence or manipulations. Only then can you be sure of deriving true business intelligence for your organization. BI technology is also a great way to ensure accuracy of reports. SQL BI Platform  provides advanced tools and techniques for all your BI needs and concerns. Koenig Solutions offers this course along with a host of other Business Intelligence and IT courses on all latest technologies available in the market today. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL

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• Canonicalization of single, small pages like reviews or product categories

  - by Valorized

  In general I pretty much like the idea of canonicalization. And in most cases, Google explains possible procedures in a clear way. For example: If I have duplicates because of parameters (eg: &sort=desc) it's clear to use the canonical for the site, provided the within the head-tag. However I'm wondering how to handle "small - no to say thin content - sites". What's my definition of a small site? An Example: On one of my main sites, we use a directory based url-structure. Let's see: example.com/ (root) example.com/category-abc/ example.com/category-abc/produkt-xy/ Moreover we provide on page, that includes all products example.com/all-categories/ (lists all products the same way as in the categories) In case of reviews, we use a similar structure: example.com/reviews/product-xy/ shows all review for one certain product example.com/reviews/product-xy/abc-your-product-is-great/ shows one certain review example.com/reviews/ shows all reviews for all products (latest first) Let's make it even more complicated: On every product site, there are the latest 2 reviews at the end of the page. So you see, a lot of potential duplicates. Q1: Should I create canonicals for a: example.com/category-abc/ to example.com/all-categories/ b: example.com/reviews/product-xy/abc-your-product-is-great/ to example.com/reviews/product-xy/ or to example.com/review/ or none of them? Q2: Can I link the collection of categories (all-categories/) and collection of all reviews (reviews/ and reviews/product-xy/) to the single category respectively to the single review. Example: example.com/reviews/ includes - let's say - 100 reviews. Can I somehow use a markup that tells search engines: "Hey, wait, you are now looking at a collection of 100 reviews - do not index this collection, you should rather prefer indexing every single review as a single page!". In HTML it might be something like that (which - of course - does not work, it's only to show you what I mean): <div class="review" rel="canonical" href="http://example.com/reviews/product-xz/abc-your-product-is-great/"> HERE GOES THE REVIEW</div> Reason: I don't think it is a great user experience if the user searches for "your product is great" and lands on example.com/reviews/ instead of example.com/reviews/product-xy/abc-your-product-is-great/. On the first site, he will have to search and might stop because of frustration. The second result, however, might lead to a conversion. The same applies for categories. If the user is searching for category-Z, he might land on the all-categories page and he has to scroll down to the (last) category, to find what he searched for (Z). So what's best practice? What should I do?

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• The importance of Unit Testing in BI

  - by Davide Mauri

  One of the main steps in the process we internally use to develop a BI solution is the implementation of Unit Test of you BI Data. As you may already know, I’ve create a simple (for now) tool that leverages NUnit to allow us to quickly create Unit Testing without having to resort to use Visual Studio Database Professional: http://queryunit.codeplex.com/ Once you have a tool like this one, you can start also to make sure that your BI solution (DWH and CUBE) is not only structurally sound (I mean, the cube or the report gets processed correctly), but you can also check that the logical integrity of your business rules is enforced. For example let’s say that the customer tell you that they will never create an invoice for a specific product-line in 2010 since that product-line is dismissed and will never be sold again. Ok we know that this in theory is true, but a lot of this business rule effectiveness depends on the fact the people does not do a mistake while inserting new orders/invoices and the ERP used implements a check for this business logic. Unfortunately these last two hypotesis are not always true, so you may find yourself really having some invoices for a product line that doesn’t exists anymore. Maybe this kind of situation in future will be solved using Master Data Management but, meanwhile, how you can give and idea of the data quality to your customers? How can you check that logical integrity of the analytical data you produce is exactly what you expect? Well, Unit Testing of a DWH or a CUBE can be a solution. Once you have defined your test suite, by writing SQL and MDX queries that checks that your data is what you expect to be, if you use NUnit (and QueryUnit does), you can then use a tool like NUnit2Report to create a nice HTML report that can be shipped via email to give information of data quality: In addition to that, since NUnit produces an XML file as a result, you can also import it into a SQL Server Database and then monitor the quality of data over time. I’ll be speaking about this approach (and more in general about how to “engineer” a BI solution) at the next European SQL PASS Adaptive BI Best Practices http://www.sqlpass.org/summit/eu2010/Agenda/ProgramSessions/AdaptiveBIBestPratices.aspx I’ll enjoy discussing with you all about this, so see you there! And remember: “if ain't tested it's broken!” (Sorry I don’t remember how said that in first place :-)) Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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• Enterprise MDM: Rationalizing Reference Data in a Fast Changing Environment

  - by Mala Narasimharajan

  By Rahul Kamath Enterprises must move at a rapid pace to establish and retain global market leadership by continuously focusing on operational efficiency, customer intimacy and relentless execution. Reference Data Management    As multi-national companies with a presence in multiple industry categories, market segments, and geographies, their ability to proactively manage changes and harness them to align their front office with back-office operations and performance management initiatives is critical to make the proverbial elephant dance. Managing reference data including types and codes, business taxonomies, complex relationships as well as mappings represent a key component of the broader agenda for enabling flexibility and agility, without sacrificing enterprise-level consistency, regulatory compliance and control. Financial Transformation  Periodically, companies find that processes implemented a decade or more ago no longer mirror the way of doing business and seek to proactively transform how they operate their business and underlying processes. Financial transformation often begins with the redesign of one’s chart of accounts. The ability to model and redesign one’s chart of accounts collaboratively, quickly validate against historical transaction bases and secure business buy-in across multiple line of business stakeholders, while continuing to manage changes within the legacy general ledger systems and downstream analytical applications while piloting the in-flight transformation can mean the difference between controlled success and project failure. Attend the session titled CON8275 - Oracle Hyperion Data Relationship Management: Enabling Enterprise Transformation at Oracle Openworld on Monday, October 1, 2012 at 4:45pm in Ballroom A of the InterContinental Hotel to learn how Oracle’s Data Relationship Management solution can help you stay ahead of the competition and proactively harness master (and reference) data changes to transform your enterprise. Hear in-depth customer testimonials from GE Healthcare and Old Mutual South Africa to learn how others have harnessed this technology effectively to build enduring competitive advantage through business process innovation and investments in master data governance. Hear GE Healthcare discuss how DRM has enabled financial transformation, ERP consolidation, mergers and acquisitions, and the alignment reference data across financial and management reporting applications. Also, learn how Old Mutual SA has upgraded to EBS R12 Financials and is transforming the management of chart of accounts for corporate reporting. Separately, an esteemed panel of DRM customers including Cisco Systems, Nationwide Insurance, Ralcorp Holdings and Mentor Graphics will discuss their perspectives on how DRM has helped them address business challenges associated with enterprise MDM including major change management initiatives including financial transformations, corporate restructuring, mergers & acquisitions, and the rationalization of financial and analytical master reference data to support alternate business perspectives for the alignment of EPM/BI initiatives. Attend the session titled CON9377 - Customer Showcase: Success with Oracle Hyperion Data Relationship Management at Openworld on Thursday, October 4, 2012 at 12:45pm in Ballroom of the InterContinental Hotel to interact with our esteemed speakers first hand.

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• Returning null vs Throwing exceptions

  - by Svish

  Is in a bit of disagreement with a more experienced developer on this issue, and was wondering what you guys here think about this. Environment is Java, EJB 3, services, etc. The code I wrote calls a service to get things and to create things. Problem was that I got null pointer exceptions in places that didn't make sense. For example when I asked the service to create an object, I got null back. And when I tried to look up an object with an id I knew existed, I still got null back. Was like it was ignoring me. Spent some time trying to figure out what was wrong in my code (since I'm less experienced I usually assume I have messed up). Turns out the reason was security. If the user principal using my service didn't have the right permissions to use the service I called from my service, then that service simply returned null. The services that are here already are usually not documented either, so this is just something you have to know... somehow... So here is the thing: I mean that this is rather confusing as a developer interacting with this service. To me it would make much more sense if that service thew an exception which would tell me that hey, you don't have the proper permissions to get info about this thing or to create this new thing. I would then immediately know why my service wasn't working as expected. However, he argued that asking is not wrong. Exceptions should only be thrown when there is an error and asking for a thing is not an error. Even if you don't have permission to "see" that the thing you asked for. The things are often looked up in a GUI by users and for those users not having the right permissions, these things simply "do not exist". So, in short: Asking is not wrong, hence no exception. Get methods return null because to those users those things "doesn't exist". Create methods return null because nothing was created, since the user wasn't allowed to create anything. So, what do you guys think? Is this normal and/or good practice? I prefer exceptions as I prefer throwing and catching exceptions because I find it much easier to know what's going on. So I would for example also prefer to throw a NotFoundException if you asked for an id which didn't exist, rather than returning null. Anyways, just curious to what others think about this as I'm not the most experienced developer yet.

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• Cool Enhancements Everyone Can Enjoy

  - by Ruth

  With Release 17, we have a few visual and functional enhancements that make using CRM On Demand that much better for us all. I'll mention a few here, but to get the full outline of these upgrades, I recommend taking 10 minutes to view the Release 17 Usability Transfer of Information course. First and foremost, I find the ability to customize your theme (or skin) pretty cool, but I've said that before. Take a look at the Selecting Your Theme and the Themes - Create Your CRM Style blog articles for more information. My next favorite is the resizeable user interface (UI). CRM On Demand will dynamically fit the device and screen resolution you're using, which includes the resizing of fields, field editors and pop-ups. If you have a wide screen like me, you should appreciate that one very much. To make it easier to see that resized UI, the detail pages got a little face lift. New horizontal lines and other subtle changes make those pages easier to read. Also, those things you need to know, like error messages and inline help are highlighted with a little icon to show the message type. You may not think every change to the detail pages are particularly exciting, but I'm sure you'll enjoy the new Head Up Display, which saves you scrolling time by adding links to related information sections. I like that the head up display travels with me as I move up and down the page...it's like a little friend that takes me where I want to go as fast as possible. You may also really like the fact that the copy record feature is now available for all record types from both detail pages and lists. Your company administrator can choose which fields get copied, so you can maximize your efficiency when creating new records. Lists also got a face lift. Alternating colors in rows make it easier to see your data. Also, the Favorite Lists icon is now on the list itself, so you can save your most useful lists with one click. If you've ever tried to create a new list with 10 columns or more, you'll be happy to hear that the maximum number of columns in a list has increased from 9 to 20. This is great news, but doesn't mean you should include the kitchen sink in your list...excess columns can slow list performance. So choose your columns wisely. Again, these are just a few of my favorite things. Let us know what you think about the new usability features. What are your favorite things?

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• Tuxedo Load Balancing

  - by Todd Little

  A question I often receive is how does Tuxedo perform load balancing.  This is often asked by customers that see an imbalance in the number of requests handled by servers offering a specific service. First of all let me say that Tuxedo really does load or request optimization instead of load balancing.  What I mean by that is that Tuxedo doesn't attempt to ensure that all servers offering a specific service get the same number of requests, but instead attempts to ensure that requests are processed in the least amount of time.   Simple round robin "load balancing" can be employed to ensure that all servers for a particular service are given the same number of requests.  But the question I ask is, "to what benefit"?  Instead Tuxedo scans the queues (which may or may not correspond to servers based upon SSSQ - Single Server Single Queue or MSSQ - Multiple Server Single Queue) to determine on which queue a request should be placed.  The scan is always performed in the same order and during the scan if a queue is empty the request is immediately placed on that queue and request routing is done.  However, should all the queues be busy, meaning that requests are currently being processed, Tuxedo chooses the queue with the least amount of "work" queued to it where work is the sum of all the requests queued weighted by their "load" value as defined in the UBBCONFIG file.  What this means is that under light loads, only the first few queues (servers) process all the requests as an empty queue is often found before reaching the end of the scan.  Thus the first few servers in the queue handle most of the requests.  While this sounds non-optimal, in fact it capitalizes on the underlying operating systems and hardware behavior to produce the best possible performance.  Round Robin scheduling would spread the requests across all the available servers and thus require all of them to be in memory, and likely not share much in the way of hardware or memory caches.  Tuxedo's system maximizes the various caches and thus optimizes overall performance.  Hopefully this makes sense and now explains why you may see a few servers handling most of the requests.  Under heavy load, meaning enough load to keep all servers that can handle a request busy, you should see a relatively equal number of requests processed.  Next post I'll try and cover how this applies to servers in a clustered (MP) environment because the load balancing there is a little more complicated. Regards,Todd LittleOracle Tuxedo Chief Architect

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• Installing Age of Empires II using PlayOnLinux doesn't work?

  - by user70342

  I have tried installing age of empires 2 using PlayOnLinux, the installation appeared to go fine but when I try and open the game it says there is a serious fault. The error report is below, unfortunately this doesn't mean alot to me, I was wondering if you could help, a) By highlighting the problem and b) by suggesting a solution. Many Thanks Unhandled exception: page fault on read access to 0xffffffff in 32-bit code (0x0040aaad). Register dump: CS:0073 SS:007b DS:007b ES:007b FS:0033 GS:003b EIP:0040aaad ESP:0033fd00 EBP:0033fde4 EFLAGS:00010293( R- -- I S -A- -C) EAX:00000001 EBX:bde88d9d ECX:00000067 EDX:00400000 ESI:7b867c00 EDI:00400000 Stack dump: 0x0033fd00:00410fed 00000000 00400000 00000067 0x0033fd10:0041ab90 00130d8a 7b895848 7bc483b1 0x0033fd20:0044c800 00000002 0044bdd0 7bca4e6c 0x0033fd30:7bc3590f 00000800 00000094 00000005 0x0033fd40:00000000 00000893 00000002 76726553 0x0033fd50:20656369 6b636150 00003420 00000800 Backtrace: =0 0x0040aaad in empires2 (+0xaaad) (0x0033fde4) 1 0x0041ace2 in empires2 (+0x1ace1) (0x0033fe70) 2 0x7b85ac0c call_process_entry+0xb() in kernel32 (0x0033fe88) 3 0x7b85e13b in kernel32 (+0x4e13a) (0x0033fec8) 4 0x7bc714f0 call_thread_func_wrapper+0xb() in ntdll (0x0033fed8) 5 0x7bc7172d call_thread_func+0x7c() in ntdll (0x0033ffa8) 6 0x7bc714ce RtlRaiseException+0x21() in ntdll (0x0033ffc8) 7 0x7bc4c30e in ntdll (+0x3c30d) (0x0033ffe8) 0x0040aaad: pop %ss Modules: Module Address Debug info Name (51 modules) PE 400000- 44b000 Export empires2 PE 10000000-1000c000 Deferred drvmgt ELF 35cae000-35d24000 Deferred rpcrt4 -PE 35cc0000-35d24000 \ rpcrt4 ELF 68000000-68022000 Deferred ld-linux.so.2 ELF 68022000-681c7000 Deferred libc.so.6 ELF 681c7000-681cc000 Deferred libdl.so.2 ELF 681cc000-681f8000 Deferred libm.so.6 ELF 681f8000-68201000 Deferred libnss_compat.so.2 ELF 68201000-6821b000 Deferred libnsl.so.1 ELF 6821b000-68228000 Deferred libnss_files.so.2 ELF 68228000-68366000 Deferred user32 -PE 68240000-68366000 \ user32 ELF 68366000-68421000 Deferred gdi32 -PE 68370000-68421000 \ gdi32 ELF 68421000-68481000 Deferred advapi32 -PE 68430000-68481000 \ advapi32 ELF 68481000-68499000 Deferred version -PE 68490000-68499000 \ version ELF 68499000-68533000 Deferred libfreetype.so.6 ELF 68533000-68549000 Deferred libz.so.1 ELF 68549000-685db000 Deferred winex11 -PE 68550000-685db000 \ winex11 ELF 685db000-685e4000 Deferred libsm.so.6 ELF 685e4000-685fe000 Deferred libice.so.6 ELF 685fe000-68610000 Deferred libxext.so.6 ELF 68610000-68744000 Deferred libx11.so.6 ELF 68744000-6874a000 Deferred libuuid.so.1 ELF 6874a000-68751000 Deferred libxdmcp.so.6 ELF 68751000-68755000 Deferred libxinerama.so.1 ELF 68755000-6875b000 Deferred libxxf86vm.so.1 ELF 6875b000-68765000 Deferred libxrender.so.1 ELF 68765000-6876e000 Deferred libxrandr.so.2 ELF 6876e000-68772000 Deferred libxcomposite.so.1 ELF 68772000-68782000 Deferred libxi.so.6 ELF 68782000-687b6000 Deferred libfontconfig.so.1 ELF 687b6000-687e0000 Deferred libexpat.so.1 ELF 687e0000-687eb000 Deferred libxcursor.so.1 ELF 687eb000-687f1000 Deferred libxfixes.so.3 ELF 6f102000-6f10e000 Deferred libnss_nis.so.2 ELF 7194d000-7196e000 Deferred imm32 -PE 71950000-7196e000 \ imm32 ELF 72c76000-72db7000 Dwarf libwine.so.1 ELF 75d65000-75d86000 Deferred libxcb.so.1 ELF 79223000-79227000 Deferred libxau.so.6 ELF 7b800000-7b8f5000 Dwarf kernel32 -PE 7b810000-7b8f5000 \ kernel32 ELF 7bc00000-7bcc1000 Dwarf ntdll -PE 7bc10000-7bcc1000 \ ntdll ELF 7bf00000-7bf03000 Deferred ELF 7c708000-7c723000 Deferred libpthread.so.0 Threads: process tid prio (all id:s are in hex) 00000008 (D) C:\Program Files\Microsoft Games\Age of Empires II\empires2.exe 00000009 0 <== 0000000e services.exe 00000039 0 00000038 0 0000001f 0 00000019 0 00000018 0 00000017 0 00000015 0 00000010 0 0000000f 0 00000012 winedevice.exe 0000001e 0 0000001a 0 00000014 0 00000013 0 0000001b plugplay.exe 00000021 0 0000001d 0 0000001c 0 00000024 explorer.exe 00000025 0 00000035 winedevice.exe 0000003a 0 00000037 0 00000036 0 System information: Wine build: wine-1.4-rc1 Platform: i386 Host system: Linux Host version: 3.2.0-24-generic

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• Fonts look squashed or stretched in the browser on Ubuntu

  - by Arjun Menon

  Fonts in the browser on Ubuntu look look squashed/stretched compared to Windows/OSX. This image shows exactly what I mean: http://i.stack.imgur.com/suUXX.png I installed msttcorefonts and configured both Chrome & FF to use Microsoft fonts (Arial, Times New Roman) instead of the default ones. While MS fonts made web pages appear a bit different, regardless of what font it was the squashed/stretched look remained. FreeSans looks a little different from Arial, but it too is rendered squashed/stretched like Arial on both FF & Chrome. Opera renders the Wikipedia page differently from FF & Chrome, but the fonts looks squashed/stretched on it as well. I used to run Kubuntu prior to switching to Ubuntu and at some point I managed to get the fonts on Chrome (only Chrome) look exactly like in the image on the left. I have no idea how I did it though. Firefox and Rekonq retained the squashed/stretched look. I had been using Rekonq for a while, then switched to FF. While using both browsers I had done various things to get the fonts to look better on them with no success - like installing MS fonts & configuring both browsers to use them. I then, after some time, installed Chrome and the fonts magically looked perfect on them - just like on right-hand side of the image. In fact, the font smoothing looked better (to my eye) compared to Windows and OSX. All 3 OSes use subtly different font smoothing strategies and the differences stand out. Later, I formatted & installed Ubuntu 12.04. The first thing I did was install msttcorefonts & then install Chrome. To my dismay, the fonts on Chrome looked just as squashed/stretched as it did in Firefox. There's no browser (except Wine Internet Explorer) that renders fonts properly on my Ubuntu setup right now. Fixing this is definitely possible, since I was able to do it on Kubuntu, but apparently it requires some mysterious tweaking. Would anyone be willing to help me out?

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