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  • What does your Python development workbench look like?

    - by Fabian Fagerholm
    First, a scene-setter to this question: Several questions on this site have to do with selection and comparison of Python IDEs. (The top one currently is What IDE to use for Python). In the answers you can see that many Python programmers use simple text editors, many use sophisticated text editors, and many use a variety of what I would call "actual" integrated development environments – a single program in which all development is done: managing project files, interfacing with a version control system, writing code, refactoring code, making build configurations, writing and executing tests, "drawing" GUIs, and so on. Through its GUI, an IDE supports different kinds of workflows to accomplish different tasks during the journey of writing a program or making changes to an existing one. The exact features vary, but a good IDE has sensible workflows and automates things to let the programmer concentrate on the creative parts of writing software. The non-IDE way of writing large programs relies on a collection of tools that are typically single-purpose; they do "one thing well" as per the Unix philosophy. This "non-integrated development environment" can be thought of as a workbench, supported by the OS and generic interaction through a text or graphical shell. The programmer creates workflows in their mind (or in a wiki?), automates parts and builds a personal workbench, often gradually and as experience accumulates. The learning curve is often steeper than with an IDE, but those who have taken the time to do this can often claim deeper understanding of their tools. (Whether they are better programmers is not part of this question.) With advanced editor-platforms like Emacs, the pieces can be integrated into a whole, while with simpler editors like gedit or TextMate, the shell/terminal is typically the "command center" to drive the workbench. Sometimes people extend an existing IDE to suit their needs. What does your Python development workbench look like? What workflows have you developed and how do they work? For the first question, please give the main "driving" program – the one that you use to control the rest (Emacs, shell, etc.) the "small tools" -- the programs you reach for when doing different tasks For the second question, please describe what the goal of the workflow is (eg. "set up a new project" or "doing initial code design" or "adding a feature" or "executing tests") what steps are in the workflow and what commands you run for each step (eg. in the shell or in Emacs) Also, please describe the context of your work: do you write small one-off scripts, do you do web development (with what framework?), do you write data-munching applications (what kind of data and for what purpose), do you do scientific computing, desktop apps, or something else? Note: A good answer addresses the perspectives above – it doesn't just list a bunch of tools. It will typically be a long answer, not a short one, and will take some thinking to produce; maybe even observing yourself working.

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  • ASP.Net or WPF(C#)?

    - by Rachel
    Our team is divided on this and I wanted to get some third-party opinions. We are building an application and cannot decide if we want to use .Net WPF Desktop Application with a WCF server, or ASP.Net web app using jQuery. I thought I'd ask the question here, with some specs, and see what the pros/cons of using either side would be. I have my own favorite and feel I am biased. Ideally we want to build the initial release of the software as fast as we can, then slow down and take time to build in the additional features/components we want later on. Above all we want the software to be fast. Users go through records all day long and delays in loading records or refreshing screens kills their productivity. Application Details: I'm estimating around 100 different screens for initial version, with plans for a lot of additional screens being added on later after the initial release. We are looking to use two-way communication for reminder and event systems Currently has to support around 100 users, although we've been told to allow for growth up to 500 users We have multiple locations Items to consider (maybe not initially in some cases but in future releases): Room for additional components to be added after initial release (there are a lot of of these... perhaps work here than the initial application) Keyboard navigation Performance is a must Production Speed to initial version Low maintenance overhead Future support Softphone/Scanner integration Our Developers: We have 1 programmer who has been learning WPF the past few months and was the one who suggested we use WPF for this. We have a 2nd programmer who is familiar with ASP.Net and who may help with the project in the future, although he will not be working on it much up until the initial release since his time is spent maintaining our current software. There is me, who has worked with both and am comfortable in either We have an outside company doing the project management, and they are an ASP.Net company. We plan on hiring 1-2 others, however we need to know what direction we are going in first Environment: General users are on Windows 2003 server with Terminal Services. They connect using WYSE thin-clients over an RDP connection. Admin staff has their own PCs with XP or higher. Users are allowed to specify their own resolution although they are limited to using IE as the web browser. Other locations connects to our network over a MPLS connection Based on that, what would you choose and why? I am asking here instead of SO because I am looking for opinions and not answers

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  • Asp.net Session State Revisited

    - by karan@dotnet
    Every now and then I see doubts and queries which I believe is the most discussed topic in the .net environment - Asp.net Sessions. So what really are they, why are they needed and what does browser and .net do with it. These and some of the other questions I hope to answer with this post. Because of the stateless nature of the HTTP protocol there is always a need of state management in a web application. There are many other ways to store data but I feel Session state is amongst the most powerful one. The ASP.NET session state is a technology that lets you store server-side, user-specific data. Our web applications can then use data to process request from the user for which the session state was instantiated. So when does a session is first created? When we start a asp.net application a non-expiring cookie is created and its called as ASP.NET_SessionId. Basically there are two methods for this depending upon how you configure this setting in your config file. The session ID can be a part of cookie as discussed above(called as ASP.NET_SessionId) or it is embedded in the browser’s URL. For the latter part we have to set cookie-less session in our web.config file. These Session ID’s are 120-bit random number that is represented by 20-character string. The cookie will be alive until you close your browser. If you browse from one app to another within the same domain, then both the apps will use the same session ID to track the session state. Why reuse? so that you don’t have to create a new session ID for each request. One can abandon one particular Session by calling Session.Abandon() which will stop the page processing and clear out the session data. A subsequent page request causes a brand new session object to be instantiated. So what happened to my cookie? Well the session cookie is still there even when one Session.Abandon() is called and another session object is created. The Session.Abandon() lets you clear out your session state without waiting for session timeout. By default, this time-out is a 20-minute sliding expiration. This expiration is refreshed every time that the user makes a request to the Web site and presents the session ID cookie. The Abandon method sets a flag in the session state object that indicates that the session state should be abandoned. If your app does not have global.asax then your session cookie will be killed at the end of each page request. So you need to have a global.asax file and Session_Start() handler to make sure that the session cookie will remain intact once its issued after the first page hit. The runtime invokes global.asax’s Session_OnEnd() when you call Session.Abandon() or the session times out. The session manager stores session data in HttpCache with sliding expiration where this timeout can be configured in the <sessionState> of web.config file. When the timeout is up the HttpCache will remove the session state object. Sometimes we want particular pages not to time out as compared to other pages in our applications. We can handle this in two ways. First, we can set a timer or may be a JavaScript function that refreshes the page after fixed intervals of time. The only thing being the page being cached locally and then the request is not made to the server so to prevent that you can add this to your page: <%@ OutputCache Location="None" VaryByParam="None" %> Second approach is to move your page into its own folder and then add a web.config to that folder to control the timeout. Also not all pages in your application will need access to session state. For those pages that do not, you can indicate that session state is not needed and prevent session data from being fetched from the store in requests to these pages. You can disable the session state at page level like this:<%@ Page EnableSessionState="False" %>tbc…

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  • Oracle VM Templates for EBS 12.1.3 for Exalogic Now Available

    - by Elke Phelps (Oracle Development)
    Oracle VM Templates for Oracle E-Business Suite 12.1.3 for x86 Exalogic Platform (64 bit) are now available on the Oracle Software Delivery Cloud.  The templates contain all the required elements to create an Oracle E-Business Suite R12 demonstration system on an Exalogic server. You can use these templates to quickly build an EBS 12.1.3 demonstration environment, bypassing the operating system and the software install (via the EBS Rapid Install).   The Oracle E-Business Suite Release 12.1.3 (64 bit) template for the Exalogic platform is a Oracle Virtual Server Guest template that contains a complete Oracle E-Business Suite Release 12.1.3 Database Tier and Application Tier Installation.  For additional details, please refer to the following My Oracle Support Note: Oracle E-Business Suite Release 12.1.3 Database Tier and Application Tier Template for Oracle Exalogic Platform (Note 1499132.1) The Oracle E-Business Suite system is installed on top of Oracle Linux Version 5 update 6. The templates have been optimized for performance, including OS kernel settings and E-Business Suite configuration settings tuned specifically for the Exalogic platform.  The configuration delivered with this template for a mid-tier running on Exalogic will support hundreds of concurrent users.  Please refer to Section 2: Performance Analysis in My Oracle Support Note 1499132.1 for additional details.   Additional Information The Oracle E-Business Suite VM templates for the Exalogic platform contain the following software versions: Operating System: Oracle Linux Version 5 Update 6 Oracle E-Business Suite 12.1.3 (Database Tier) Oracle E-Business Suite 12.1.3 (Application Tier) The following considerations were made when the Oracle E-Business Suite VM template for the Exalogic platform were designed: Templates use the hardware-virtualized architecture, supporting hardware with virtualization feature. Database Tier Template is configured to use the following configuration: 16 GB RAM 4 VCPUs 250 GB of Disk space for application installation Application Tier Template is configured to use the following configuration: 16 GB RAM 4 VCPUs 50 GB of Disk space for application installation References Oracle E-Business Suite Release 12.1.3 Database Tier and Application Tier Template for Oracle Exalogic Platform (Note 1499132.1) Related Articles Part 1: E-Business Suite 12.1.1 Templates for Oracle VM Now Available Part 2: Using Oracle VM with Oracle E-Business Suite Virtualization Kit Part 3: On Clouds and Virtualization in EBS Environments (OpenWorld 2009 Recap) Part 4: Deploying E-Business Suite on Amazon Web Services Elastic Compute Cloud Part 5: Live Migration of EBS Services Using Oracle VM Support Policies for Virtualization Technologies and Oracle E-Business Suite Virtualization and the E-Business Suite, Redux Virtualization and E-Business Suite

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  • C# Domain-Driven Design Sample Released

    - by Artur Trosin
    In the post I want to declare that NDDD Sample application(s) is released and share the work with you. You can access it here: http://code.google.com/p/ndddsample. NDDDSample from functionality perspective matches DDDSample 1.1.0 which is based Java and on joint effort by Eric Evans' company Domain Language and the Swedish software consulting company Citerus. But because NDDDSample is based on .NET technologies those two implementations could not be matched directly. However concepts, practices, values, patterns, especially DDD, are cross-language and cross-platform :). Implementation of .NET version of the application was an interesting journey because now as .NET developer I better understand the differences positive and negative between these two platforms. Even there are those differences they can be overtaken, in many cases it was not so hard to match a java libs\framework with .NET during the implementation. Here is a list of technology stack: 1. .net 3.5 - framework 2. VS.NET 2008 - IDE 3. ASP.NET MVC2.0 - for administration and tracking UI 4. WCF - communication mechanism 5. NHibernate - ORM 6. Rhino Commons - Nhibernate session management, base classes for in memory unit tests 7. SqlLite - database 8. Windsor - inversion of control container 9. Windsor WCF facility - for better integration with NHibernate 10. MvcContrib - and in particular its Castle WindsorControllerFactory in order to enable IoC for controllers 11. WPF - for incident logging application 12. Moq - mocking lib used for unit tests 13. NUnit - unit testing framework 14. Log4net - logging framework 15. Cloud based on Azure SDK These are not the latest technologies, tools and libs for the moment but if there are someone thinks that it would be useful to migrate the sample to latest current technologies and versions please comment. Cloud version of the application is based on Azure emulated environment provided by the SDK, so it hasn't been tested on ‘real' Azure scenario (we just do not have access to it). Thanks to participants, Eugen Gorgan who was involved directly in development, Ruslan Rusu and Victor Lungu spend their free time to discuss .NET specific decisions, Eugen Navitaniuc helped with Java related questions. Also, big thank to Cornel Cretu, he designed a nice logo and helped with some browser incompatibility issues. Any review and feedback are welcome! Thank you, Artur Trosin

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  • Now Shipping! NetAdvantage for .NET 2010 Volume 3!

    The new NetAdvantage Ultimate includes all four Line of Business user interface control sets for ASP .NET, Windows Forms, WPF and Silverlight plus two advanced Data Visualization UI control sets for WPF and Silverlight. With six NetAdvantage products in one robust package, Infragistics® gives you hundreds of controls and infinite development possibilities. Unified XAML Product Strategy-Share Code, Get More Controls In the 10.3 release, Infragistics continues to deliver code parity between the XAML platforms, WPF and Silverlight. In the line of business toolsets, Infragistics introduces the new xamSchedule™, full-featured, Outlook® 2010-style schedule controls, and the new xamDataTree™, a data bound tree view that comfortably handles tens of thousands of tree nodes. Mimicking our Silverlight Drag and Drop Framework, the WPF Drag and Drop Framework CTP empowers you to add your own rich touches to your applications. Track Users' Behaviors New to all NetAdvantage Silverlight controls is the Infragistics Analytics Framework (IGAF), which empowers you to track user behavior in RIAs running on Silverlight 4. Building on the Microsoft® Silverlight Analytics Framework, with IGAF you can analyze the user's behaviors to ensure the experience you want to deliver. NetAdvantage for Windows Forms--New Office® 2010 Ribbon and Application Menu 2010 Create new experiences with Windows Forms. Now with Office 2010 styling, NetAdvantage for Windows Forms has new features such as Microsoft® Office 2010 ribbon and enhanced Infragistics.Excel to export the contents of the high performance WinGrid™ into Microsoft Excel® 2010. The new Windows Message Support enables Infragistics standalone editor controls to process numerous Windows® OS messages, allowing them to respond just like native controls to changes in the Windows environment. Create Faster Web 2.0 Experiences with NetAdvantage for ASP .NET Infragistics continues to push the envelope to deliver the fastest ASP .NET WebForms controls available on the market. Our lightning fast ASP .NET grids are now enhanced with XPS/PDF Exporting and Summary Rows. This release also includes support for jQuery Templating (as a CTP) within our WebDataGrid™ and WebDataTree™ controls allowing you to quickly cut down overall page size. Deliver Business Intelligence with Power, Flexibility and the Office 2010 Experience NetAdvantage for WPF Data Visualization and NetAdvantage for Silverlight Data Visualization help you deliver flexible, powerful and usable end user experiences in Business Intelligence applications. Both suites include the Pivot Grid that delivers the full power of online analytical processing (OLAP) to present multi-dimensional data, sliced and diced in cross-tabulated form for end users to drill down into, interact with and easily extract meaning from the data. Mapping Made Easy 10.3 marks the official release of the WPF Data Visualization xamMap™ control to map anything and everything from geographic to geo-spacial mapping data. Map layers allow you to add successive levels of detail, navigational panes for panning in all directions, color swatch panes that facilitate value scales like Choropleth shading, and scale panes allowing users to zoom-in and out. Both toolsets introduce the first of many relationship maps! With the xamOrgChart™ CTP you can map out organizational charts of up to 50K employees, competitive brackets (think World Cup) and any other relational, organizational map your application needs. http://www.infragistics.com span.fullpost {display:none;}

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  • The winning combination: Oracle VM Server for x86 + Oracle Sun Fire HW

    - by Karim Berrah
    You might be wondering why OVM Server for x86 (OVM/x86 here and below) should be seriously considered as a nice (business point of view) alternative to standard Hypervisors, if you are virtualizing Oracle Software, especially if you are planning to move to Oracle x86 Hardware (rackmount or blades). Well, let see some "not well known" facts that might interest you and help you in saving more money for your entire company (and not only the Virtulization team). Fact 1: OVM/x86 is considered as a hard partitionning technology (check page 2 of Oracle Server Partitionning Licencing Policies), so if you are buying new servers based on the latest INTEL Xeon E7 CPUs (10 cores per Socket) and have some licencing issues in deploying further Oracle SW, because you are using a hypervisor not recognized as a hard partitionning technology (like VMware), then you need to check here how to do it with OVM . This might help you to continue to deploy your Oracle DB instances on new x86 HW (12 cores, 40 cores, 64 cores servers) in a reasonable way, without having to pay licences for 12 CPU, 40 CPUs or 64 CPUs. You might also consider migrating your legacy Oracle DB DBs to a virtualized environment like OVM/x86 an recover some CPU licences, that can be reused somewhere else in production. Fact 2: OVM/x86 is free to use, without any extra licence for any specific feature (LiveMigration, High Availability, Embedded Management Console). If you want to use it on non Oracle HW, there is a support fee per  system and per year, that is much below VMware support (Oracle VM Premier Limited Support for systems up to 2 CPUs, and Oracle VM Premier Support for any bigger system, independently on the number of populated sockets). Fact 3: support is included with your Oracle x86 HW support (OPS for systems)  and you can re-install on you system Oracle Linux, Oracle Solaris or Oracle VM server for x86, without beeing charged, an keeping the same support level. Fact 4: it is less expensive to virtualize Oracle Linux or Oracle Solaris on OVM/x86 with Oracle HW that any other similar solution with VMware, because all the VMs are then supported and licenced when you buy Oracle HW with OPS. Fact 5: Oracle VM Templates bring you many Virtual Machines already installed, patched and optimized for various Oracle applications. And to be more specific, those templates are fully supported by Oracle, which is not really true when it comes to another hypervisor. By optimized VM Kernel, I mean PV drivers, OVM-ready kernels in the VM, single source clock for all the VMS, better memory management of the VM ... Fact 6: there is no extra costs for a management console. OVM comes with a free OVM Manager package for Linux.  More infos: Latest announcement of OVM/x86 update 2.2.2 A short flash demo of OVM server for x86 A short flash demo on OVM Templates and Virtual Assembly Builder Oracle Linux Support and Oracle VM Support Global Price List  ISVs: Benefits for Independant Sofwtare Vendors (ISVs) in using OVM/x86 Consultant Services: Advanced Customer Services for OVM/x86  Technical Features Best practices and Guideline for OVM with Oracle Blades Reduce TCO and get more Value from your x86 Infrastructure

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  • ArchBeat Top 10 for November 11-17, 2012

    - by Bob Rhubart
    The Top 10 most popular items shared on the OTN ArchBeat Facebook page for the week of November 11-17, 2012. Developing and Enforcing a BYOD Policy Darin Pendergraft's post includes links to a recent Mobile Access Policy Survey by SANS as well as registration information for a Nov 15 webcast featuring security expert Tony DeLaGrange from Secure Ideas, SANS instructor, attorney and technology law expert Ben Wright, and Oracle IDM product manager Lee Howarth. This Week on the OTN Architect Community Homepage Make time to check out this week's features on the OTN Solution Architect Homepage, including: SOA Practitioner Guide: Identifying and Discovering Services Technical article by Yuli Vasiliev on Setting Up, Configuring, and Using an Oracle WebLogic Server Cluster The conclusion of the 3-part OTN ArchBeat Podcast on Future-Proofing your career. WLST Starting and Stopping a WebLogic Environment | Rene van Wijk Oracle ACE Rene van Wijk explores how to start a server with as little input as possible. Cloud Integration White Paper | Bruce Tierney Bruce Tierney shares an overview of Cloud Integration - A Comprehensive Solution, a new white paper he co-authored with David Baum, Rajesh Raheja, Bruce Tierney, and Vijay Pawar. X.509 Certificate Revocation Checking Using OCSP protocol with Oracle WebLogic Server 12c | Abhijit Patil Abhijit Patil's article focuses on how to use X.509 Certificate Revocation Checking Functionality with the OCSP protocol to validate in-bound certificates. Although this article focuses on inbound OCSP validation using OCSP, Oracle WebLogic Server 12c also supports outbound OCSP validation. Update on My OBIEE / Exalytics Books | Mark Rittman Oracle ACE Director Mark Rittman shares several resources related to his books Oracle Business Intelligence 11g Developers Guide and Oracle Exalytics Revealed, including a podcast interview with Oracle's Paul Rodwick. E-Business Suite 12.1.3 Data Masking Certified with Enterprise Manager 12c | Elke Phelps "You can use the Oracle Data Masking Pack with Oracle Enterprise Manager Grid Control 12c to scramble sensitive data in cloned E-Business Suite environments," reports Elke Phelps. There's a lot more information about this announcement in Elke's post. WebLogic Application Server: free for developers! | Bruno Borges Java blogger Bruno Borges shares news about important changes in the license agreement for Oracle WebLogic Server. Agile Architecture | David Sprott "There is ample evidence that Agile Architecture is a primary contributor to business agility, yet we do not have a well understood architecture management system that integrates with Agile methods," observes David Sprott in this extensive post. My iPad & This Cloud Thing | Floyd Teter Oracle ACE Director Floyd Teter explains why the Cloud is making it possible for him to use his iPad for tasks previously relegated to his laptop, and why this same scenario is likely to play out for a great many people. Thought for the Day "In programming, the hard part isn't solving problems, but deciding what problems to solve." — Paul Graham Source: SoftwareQuotes.com

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  • Kickstarter "last minute cold feet"

    - by mm24
    today I scheduled the publication of a video on kickstarter requesting approximately 5.000 $ in order to complete the iPhone shooter game I started 1 year ago after quitting my job. I invested more than 20.000$ in the game so far (for artwork, music, legal and accountant expenses) and I am now getting cold feet about my decision of publishing the video. The game is "nearly finished", in other words: the game mechanics are working but I still have some bugs to fix. Once I will have finished this (I hope will take me 1 or 2 weeks) I plan to start working on the actual level balancing (e.g. deciding the order of appearence of enemies for each level and balancing the number of hitpoints and strenght of bullets that the enemies have). Reasons for not publishing the video are: fear that the concept can be copied easily: the game is a shooter game set in a different environment (its a pretty cool one, believe me :)) and I am worried that someone might copy* the idea (I know, its the usual "I am worried story.."). A shooter game is one of the easiest game to implement and hence there will be hundreds game developer able to copy it by just adapting their existing code and changing graphics (not as straightforward). It took me one year to develop this because I was inexperienced plus there are approximately 6/7 months of work from the illustrator and there are 8 unique music tracks composed. The soundtrack of the video is the soundtrack of the game wich is not yet published and has not been deposited to a music society. I did create legally valid timestamps for the tracks and I am considering uploading the album on iTunes before publishing the video so I can have a certain publication date. But overall I am a bit scared and worried because I have never done this before and even the simple act of publishing an album requires me to read a long contract from the "aggregator company") which, even if I do have contracts with the musicians do worry me as I am not a U.S. resident and I am not familiar with the U.S. law system Reasons for publishing the video are: I almost run out of money (but this is not a real reason as I should have enough for one more month of development time) ...I kind of need extra money as, even if I do have money for 1 month of development I do not have money for marketing and for other expenses (e.g. accountant) It will create a fan base I could get some useful feedback from a wider range of beta testers It might create some pre-release buzz in case some blogger or game magazine likes the concept Anyone has had similar experiences? Is there a real risk that someone will copy the concept and implement it in a couple of months? Will the Kickstarter campaing be a good pre-release exposure for the gmae? Any refrences of similar projects/situations? Is it realistic that someone like ROVIO will copy the idea straight away?

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  • Getting Ramped for Silverlight 4

    - by GeekAgilistMercenary
    Here is a quick walk through of setting up your Silverlight 4 development environment.  The first assumed step is that you have Visual Studio 2010 already installed and any appropriate patches.  Then download the following in order and install each. Silverlight 4 Tools RC2 for Visual Studio and Silverlight 4 RTW Expression Blend 4 Release Candidate Silverlight Toolkit - Not necessary, but lots of good bits in this download. WCF RIA Services - This is also not necessary, but you should grab it just in case anyway. Once each of these are installed jump into Visual Studio 2010.  Start a new Silverlight 4 Project by going to File -> New -> Project -> and select the Silverlight Project Templates.  Here you'll see a new list of projects that are specific to the above listed downloads. Silverlight Business Application WCF RIA Service Class Library Silverlight Unit Test Application One way to confirm (and what I am going to display here in this entry) Silverlight 4 is installed ok is to select the Silverlight Application Template and start a new project. On the next screen you will see some of the standard options.  I always go with the ASP.NET MVC Option and with these new installations I am going to select Silverlight 4 (should be selected already) from the drop down and check the Enable WCF RIA Services check box. I also, for good measure, always create a unit test project for the ASP.NET MVC Project that will host the Silverlight Application Project.  When all is setup, the Solutions Explorer should look like what is shown below. Add the following code to the XAML of the MainPage.xaml of the Silverlight Project. <UserControl x:Class="Silverlight4.MainPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" d:DesignHeight="300" d:DesignWidth="400">   <Grid x:Name="LayoutRoot" Background="White"> <TextBlock x:Name="textBlockTest" Text="Hello World!" /> </Grid> </UserControl> Now execute the project, if all runs well you have installed Silverlight 4 successfully. Bam!  Silverlight 4 ready to go!  I will have more on Silverlight 4 very soon, as I will be starting a project (personal) and blogging it as I work through it.  Also, if you run into any issues I would like to read about them, so please comment.  I had a few issues and also had some design time rendering issues in the VS 2010 IDE when I installed these bits at first. Check out the original entry here.

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  • Be Careful When Referencing SPList.Items

    - by Brian Jackett
    Be very careful how you reference your SPListItem objects through the SharePoint API.  I’ll say it again.  Be very careful how you reference your SPListItem objects through the SharePoint API.  Ok, now that you get the point that this will be a “learn from my mistakes and don’t do unsmart things like I did” post, let’s dig into what it was that I did poorly. Scenario     For the past year I’ve been building custom .Net applications that are hosted through SharePoint.  These application involve a number of SharePoint lists, external databases, custom web parts, and other SharePoint elements to provide functionality.  About two weeks ago I received a message from one of our end users that a custom application was performing slowly.  Specifically performance was slow when users were performing actions that interacted with the primary SharePoint list storing data for that app. The Problem     I took a copy of the production site into a dev environment to investigate the code that was executing.  After attaching the debugger and running through the code I quickly found pieces of code referencing SPListItem objects (like below) that were performing very poorly: SPListItem myItem = SPContext.Current.Web.Lists["List Name"].Items.GetItemById(value); // do updates on SPListItem retrieved     As it turns out the SPList I was referencing was fairly large at ~1000 items and weighing in over 150 MB.  You see the problem with my above code is that I retrieved the SPListItem by first (unnecessarily) going through the Items member of the list.  As I understand it, when doing so the executing code will attempt to resolve that entity and pull it from the database and into RAM (all 150 MB.)  This causes the equivalent of a 50 car pile up in terms of performance with a single update taking more than 15 seconds. The Solution     The solution is actually quite simple and I wish I had realized this during development.  Instead of going through the Items member it is possible to call GetItemById(…) directly on the SPList as in the example below: SPListItem myItem = SPContext.Current.Web.Lists["List Name"].GetItemById(value); // do updates on SPListItem retrieved     After making this simple change performance skyrocketed and updates were back to less than a second.   Conclusion     When given the option between two solutions, usually the simplest is the best solution.  In my scenario I was adding extra complexity going through the API the long way around to get to the objects I needed and it ended up hurting performance greatly.  Luckily we were able to find and resolve the performance issue in a relatively short amount of time.  Like I said at the beginning of the post, learn from my mistakes and hope it helps you.         -Frog Out   Image linked from http://www.freespirit.com/files/IMAGE/COVER/LARGE/BeCarefulSafe.jpg

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  • Taking the fear out of a Cloud initiative through the use of security tools

    - by user736511
    Typical employees, constituents, and business owners  interact with online services at a level where their knowledge of back-end systems is low, and most of the times, there is no interest in knowing the systems' architecture.  Most application administrators, while partially responsible for these systems' upkeep, have very low interactions with them, at least at an operational, platform level.  Of greatest interest to these groups is the consistent, reliable, and manageable operation of the interfaces with which they communicate.  Introducing the "Cloud" topic in any evolving architecture automatically raises the concerns for data and identity security simply because of the perception that when owning the silicon, enterprises are not able to manage its content.  But is this really true?   In the majority of traditional architectures, data and applications that access it are physically distant from the organization that owns it.  It may reside in a shared data center, or a geographically convenient location that spans large organizations' connectivity capabilities.  In the end, very often, the model of a "traditional" architecture is fairly close to the "new" Cloud architecture.  Most notable difference is that by nature, a Cloud setup uses security as a core function, and not as a necessary add-on. Therefore, following best practices, one can say that data can be safer in the Cloud than in traditional, stove-piped environments where data access is segmented and difficult to audit. The caveat is, of course, what "best practices" consist of, and here is where Oracle's security tools are perfectly suited for the task.  Since Oracle's model is to support very large organizations, it is fundamentally concerned about distributed applications, databases etc and their security, and the related Identity Management Products, or DB Security options reflect that concept.  In the end, consumers of applications and their data are to be served more safely in a controlled Cloud environment, while realizing the many cost savings associated with it. Having very fast resources to serve them (such as the Exa* platform) makes the concept even more attractive.  Finally, if a Cloud strategy does not seem feasible, consider the pros and cons of a traditional vs. a Cloud architecture.  Using the exact same criteria and business goals/traditions, and with Oracle's technology, you might be hard pressed to justify maintaining the technical status quo on security alone. For additional information please visit Oracle's Cloud Security page at: http://www.oracle.com/us/technologies/cloud/cloud-security-428855.html

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  • Windows Workflow Foundation (WF) and things I were more intuitive

    - by pjohnson
    I've started using Windows Workflow Foundation, and so far ran into a few things that aren't incredibly obvious. Microsoft did a good job of providing a ton of samples, which is handy because you need them to get anywhere with WF. The docs are thin, so I've been bouncing between samples and downloadable labs to figure out how to implement various activities in a workflow. Code separation or not? You can create a workflow and activity in Visual Studio with or without code separation, i.e. just a .cs "Component" style object with a Designer.cs file, or a .xoml XML markup file with code behind (beside?) it. Absence any obvious advantage to one or the other, I used code separation for workflows and any complex custom activities, and without code separation for custom activities that just inherit from the Activity class and thus don't have anything special in the designer. So far, so good. Service - In the WF world, this is simply a class that talks to the workflow about things outside the workflow, not to be confused with how the term "service" is used in every other context I've seen in the Windows and .NET world, i.e. an executable that waits for events or requests from a client and services them (Windows service, web service, WCF service, etc.). ListenActivity - Such a great concept, yet so unintuitive. It seems you need at least two branches (EventDrivenActivity instances), one for your positive condition and one for a timeout. The positive condition has a HandleExternalEventActivity, and the timeout has a DelayActivity followed by however you want to handle the delay, e.g. a ThrowActivity. The timeout is simple enough; wiring up the HandleExternalEventActivity is where things get fun. You need to create a service (see above), and an interface for that service (this seems more complex than should be necessary--why not have activities just wire to a service directly?). And you need to create a custom EventArgs class that inherits from ExternalDataEventArgs--you can't create an ExternalDataEventArgs event handler directly, even if you don't need to add any more information to the event args, despite ExternalDataEventArgs not being marked as an abstract class, nor a compiler error nor warning nor any other indication that you're doing something wrong, until you run it and find that it always times out and get to check every place mentioned here to see why. Your interface and service need an event that consumes your custom EventArgs class, and a method to fire that event. You need to call that method from somewhere. Then you get to hope that you did everything just right, or that you can step through code in the debugger before your Delay timeout expires. Yes, it's as much fun as it sounds. TransactionScopeActivity - I had the bright idea of putting one in as a placeholder, then filling in the database updates later. That caused this error: The workflow hosting environment does not have a persistence service as required by an operation on the workflow instance "[GUID]". ...which is about as helpful as "Object reference not set to an instance of an object" and even more fun to debug. Google led me to this Microsoft Forums hit, and from there I figured out it didn't like that the activity had no children. Again, a Validator on TransactionScopeActivity would have pointed this out to me at design time, rather than handing me a nearly useless error at runtime. Easily enough, I disabled the activity and that fixed it. I still see huge potential in my work where WF could make things easier and more flexible, but there are some seriously rough edges at the moment. Maybe I'm just spoiled by how much easier and more intuitive development elsewhere in the .NET Framework is.

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  • SOA Management in 3 minutes - Video explainer

    - by J Swaroop
    Normal 0 false false false EN-US X-NONE X-NONE /* 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:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Today’s CIOs and IT executives face challenges that take valuable time away from more strategic business objectives. They have to keep their systems running 24/7, manage increasingly complex applications, and more as part of their SOA environment. Watch this quick 3 minute video explainer to Normal 0 false false false EN-US X-NONE X-NONE /* 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:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} learn how Oracle EM Management Pack Plus for SOA is engineered to deliver value right out of the box with a fully centralized management console - with a rich set of service and system level dashboards, administrators can view service levels for key business processes and SOA infrastructure components from a central location. Watch the 3 minute video explainer

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  • Oracle VM networking under the hood and 3 new templates

    - by Chris Kawalek
    We have a few cool things to tell you about:  First up: have you ever wondered what happens behind the scenes in the network when you Live Migrate your Oracle VM server workload? Or how Oracle VM implements the network infrastructure you configure through your point & click action in the GUI? Really….how do they do this? For an in-depth view of the Oracle VM for x86 Networking model, Look ‘Under the Hood’ at Networking in Oracle VM Server for x86 with our best practices engineer in a blog post on OTN Garage. Next, making things simple in Oracle VM is what we strive every day to deliver to our user community. With that, we are pleased to bring you updates on three new Oracle Application templates: E-Business Suite 12.1.3 for Oracle ExalogicOracle VM templates for Oracle E-Business Suite 12.1.3 (x86 64-bit for Oracle Exalogic Elastic Cloud) contain all the required elements to create an Oracle E-Business Suite R12 demonstration system on an Exalogic server. You can use these templates to quickly build an EBS 12.1.3 demonstration environment, bypassing the operating system and the software install (via the EBS Rapid Install). For further details, please review the announcement.   JD Edwards EnterpriseOne 9.1 and JD Edwards EnterpriseOne Tools 9.1.2.1 for x86 servers and Oracle Exalogic The Oracle VM Templates for JD Edwards EnterpriseOne provide a method to rapidly install JD Edwards EnterpriseOne 9.1  and Tools 9.1.2.1. The complete stack includes Oracle Database 11g R2 and Oracle WebLogic Server 10.3.5 running on Oracle Linux 5. The templates can be installed to Oracle VM Server for x86 release 3.x and to the Oracle Exalogic Elastic Cloud.  PeopleSoft PeopleTools 8.5.2.10 for Oracle Exalogic This virtual deployment package delivers a "quick start" of PeopleSoft Middle-tier template on Oracle Linux for Oracle Exalogic Elastic Cloud. And last, are you wondering why we talk about “fast”, “rapid” when we refer to using Oracle VM templates to virtualize Oracle applications? Read the Evaluator Group Lab Validation report quantifying speeds of deployment up to 10x faster than with VMware vSphere. Or you can also check out our on demand webcast Quantifying the Value of Application-Driven Virtualization.

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  • composite-video-to-usb adaptor

    - by sawa
    I bought a composite-video-to-usb adaptor. I want to stream video game in ubuntu. How can I do that? My environment: Monoprice USB Video and Audio Grabber Ubuntu 11.04 The relevant output of lsusb: Bus 001 Device 011: ID 0572:262a Conexant Systems (Rockwell), Inc. The relevant output of sudo lshw: *-usb:0 description: USB Controller product: 82801JI (ICH10 Family) USB UHCI Controller #4 vendor: Intel Corporation physical id: 1a bus info: pci@0000:00:1a.0 version: 00 width: 32 bits clock: 33MHz capabilities: uhci bus_master cap_list configuration: driver=uhci_hcd latency=0 resources: irq:16 ioport:f0e0(size=32) *-usb:1 description: USB Controller product: 82801JI (ICH10 Family) USB UHCI Controller #5 vendor: Intel Corporation physical id: 1a.1 bus info: pci@0000:00:1a.1 version: 00 width: 32 bits clock: 33MHz capabilities: uhci bus_master cap_list configuration: driver=uhci_hcd latency=0 resources: irq:21 ioport:f0c0(size=32) *-usb:2 description: USB Controller product: 82801JI (ICH10 Family) USB UHCI Controller #6 vendor: Intel Corporation physical id: 1a.2 bus info: pci@0000:00:1a.2 version: 00 width: 32 bits clock: 33MHz capabilities: uhci bus_master cap_list configuration: driver=uhci_hcd latency=0 resources: irq:18 ioport:f0a0(size=32) *-usb:3 description: USB Controller product: 82801JI (ICH10 Family) USB2 EHCI Controller #2 vendor: Intel Corporation physical id: 1a.7 bus info: pci@0000:00:1a.7 version: 00 width: 32 bits clock: 33MHz capabilities: pm debug ehci bus_master cap_list configuration: driver=ehci_hcd latency=0 resources: irq:18 memory:e0525c00-e0525fff *-multimedia description: Audio device product: 82801JI (ICH10 Family) HD Audio Controller vendor: Intel Corporation physical id: 1b bus info: pci@0000:00:1b.0 version: 00 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: driver=HDA Intel latency=0 resources: irq:43 memory:e0520000-e0523fff *-usb:4 description: USB Controller product: 82801JI (ICH10 Family) USB UHCI Controller #1 vendor: Intel Corporation physical id: 1d bus info: pci@0000:00:1d.0 version: 00 width: 32 bits clock: 33MHz capabilities: uhci bus_master cap_list configuration: driver=uhci_hcd latency=0 resources: irq:23 ioport:f080(size=32) *-usb:5 description: USB Controller product: 82801JI (ICH10 Family) USB UHCI Controller #2 vendor: Intel Corporation physical id: 1d.1 bus info: pci@0000:00:1d.1 version: 00 width: 32 bits clock: 33MHz capabilities: uhci bus_master cap_list configuration: driver=uhci_hcd latency=0 resources: irq:19 ioport:f060(size=32) *-usb:6 description: USB Controller product: 82801JI (ICH10 Family) USB UHCI Controller #3 vendor: Intel Corporation physical id: 1d.2 bus info: pci@0000:00:1d.2 version: 00 width: 32 bits clock: 33MHz capabilities: uhci bus_master cap_list configuration: driver=uhci_hcd latency=0 resources: irq:18 ioport:f040(size=32) *-usb:7 description: USB Controller product: 82801JI (ICH10 Family) USB2 EHCI Controller #1 vendor: Intel Corporation physical id: 1d.7 bus info: pci@0000:00:1d.7 version: 00 width: 32 bits clock: 33MHz capabilities: pm debug ehci bus_master cap_list configuration: driver=ehci_hcd latency=0 resources: irq:23 memory:e0525800-e0525bff The relevant output of dmesg: [18953.220035] usb 1-1: new high speed USB device using ehci_hcd and address 6 [19964.761076] Linux video capture interface: v2.00 [19964.767112] usbcore: registered new interface driver uvcvideo [19964.767115] USB Video Class driver (v1.0.0)

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  • “Play Now” via website vs. download & install

    - by Inside
    I've spent some time looking over the various threads here on GDSE and also on the regular Stackoverflow site, and while I saw a lot of posts and threads regarding various engines that could be used in game development, I haven't seen very much discussion regarding the various platforms that they can be used on. In particular, I'm talking about browser games vs. desktop games. I want to develop a simple 3D networked multiplayer game - roughly on the graphics level of Paper Mario and gameplay with roughly the same level of interaction as a hack & slash action/adventure game - and I'm having a hard time deciding what platform I want to target with it. I have some experience with using C++/Ogre3D and Python/Panda3D (and also some synchronized/networked programming), but I'm wondering if it's worth it to spend the extra time to learn another language and another engine/toolkit just so that the game can be played in a browser window (I'm looking at jMonkeyEngine right now). Is it worth it to go with engines that are less-mature, have less documentation, have fewer features, and smaller communities* just so that a (possibly?) larger audience can be reached? Does it make sense to even go with a web-environment for the kind of game that I want to make? Does anyone have any experiences with decisions like this? (* With the exception of Flash-based engines it seems like most of the other approaches have downsides when compared to what is available for desktop-based environments. I'd go with Flash, but I'm worried that Flash's 3D capabilities aren't mature enough right now to do what I want easily. There's also Unity3D, but I'm not sure how I feel about that at all. It seems highly polished, but requires a plugin to be downloaded for the game to be played -- at that rate I might as well have players download my game.) For simple & short games the Newgrounds approach (go to the site, click "play now", instant gratification) seems to work well. What about for more complex games? Is there a point where the complexity of a game is enough for people to say "OK, I'm going to download and play that"?

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  • MDM Poised for Growth

    - by david.butler(at)oracle.com
    David Nixon, an Oracle colleague of mine, was doing some research on MDM the other day. He came up with some well founded insights that I thought I’d share with you. Gartner recently published a note asking “Should Organizations Using ERP 'Do' Master Data Management?”  It may seem a bit strange but that’s a question Gartner has been asked by a number of companies as organizations are beginning to understand the importance of data governance and data stewardship.  That’s because ERP Suites typically “focus on integrating their own applications within suites, but have little interest in making their suites interoperate with the applications or suites of other vendors.”  Therefore, Gartner is advising customers that “have deployed or plan to support multiple packaged application suites (even from the same vendor) that have different semantic data and/or process models” to add an MDM solution. And it appears that customers are taking note.  In a more recent note entitled “Search Analytics Trends: Master Data Management”, Gartner noted that MDM searches on gartner.com in November 2010 “were 300% higher than [in] May 2009, indicating the increased interest an importance that businesses are placing on MDM.”  Why the increased interest?  Moving towards a single version of the truth is a familiar theme, but customers are talking more about the underlying business value that this enables.  For example, businesses are talking about the need to fix master data before they can successfully move forward on SOA initiatives.  And the growing demands for compliance continue to be a major driver.  In short, companies are talking more about specific and tangible business value, and they are looking for help creating business cases for an MDM initiative. Why This Matters Gartner’s notes make three things clear.  First, MDM is poised for growth as organizations gain a greater understanding for it and the need they have.  Many are still sorting it out, but the demand is growing and is sure to rise.  Second, any organization with a heterogeneous computing environment should invest in MDM.  Even solutions from the same vendor may have different data models and could benefit from MDM.  But the key to growth, or which vendors will benefit the most from it, is the third and perhaps most critical point: companies need help with the business case for MDM. Oracle can help your organization build a compelling business case for MDM. We have seen our 1100+ MDM customers gain competitive advantages in a wide variety of implementations. Give us a ring.

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  • ATG Live Webcast: Planning Your Oracle E-Business Suite Upgrade from 11i to 12.1 and Beyond

    - by BillSawyer
    I am pleased to announce the next ATG Live Webcast event on December 1, 2011. Planning Your Oracle E-Business Suite Upgrade from 11i to 12.1 and Beyond Are you still on 11i and wondering about your next steps in the E-Business Suite lifecycle? Are you wondering what the upgrade considerations are going to be for 12.2? Do you want to know the best practices for upgrading E-Business Suite regardless of your version? If so, this is the webcast for you. Join Anne Carlson, Senior Director, Oracle E-Business Suite Product Strategy for this one-hour webcast with Q&A. This session will give you a framework to make informed upgrade decisions for your E-Business Suite environment. This event is targeted to functional managers, EBS project planners, and implementers. The agenda for the Planning Your Oracle E-Business Suite Upgrade from 11i to 12.1 and Beyond includes the following topics: Business Value of the Upgrade Starting Your Upgrade Project Planning Your Upgrade Approach Preparing for Your Upgrade Execution Extended Support for 11i Additional Resources Date:            Thursday, December 1, 2011Time:           8:00 AM - 9:00 AM Pacific Standard TimePresenter:  Anne Carlson, Senior Director, Oracle E-Business Suite Product StrategyWebcast Registration Link (Preregistration is optional but encouraged)To hear the audio feed:    Domestic Participant Dial-In Number:           877-697-8128    International Participant Dial-In Number:      706-634-9568    Additional International Dial-In Numbers Link:    Dial-In Passcode:                                              98515To see the presentation:    The Direct Access Web Conference details are:    Website URL: https://ouweb.webex.com    Meeting Number:  271378459 If you miss the webcast, or you have missed any webcast, don't worry -- we'll post links to the recording as soon as it's available from Oracle University.  You can monitor this blog for pointers to the replay. And, you can find our archive of our past webcasts and training at http://blogs.oracle.com/stevenChan/entry/e_business_suite_technology_learningIf you have any questions or comments, feel free to email Bill Sawyer (Senior Manager, Applications Technology Curriculum) at BilldotSawyer-AT-Oracle-DOT-com.

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  • Automated build platform for .NET portfolio - best choice?

    - by jkohlhepp
    I am involved with maintaining a fairly large portfolio of .NET applications. Also in the portfolio are legacy applications built on top of other platforms - native C++, ECLIPS Forms, etc. I have a complex build framework on top of NAnt right now that manages the builds for all of these applications. The build framework uses NAnt to do a number of different things: Pull code out of Subversion, as well as create tags in Subversion Build the code, using MSBuild for .NET or other compilers for other platforms Peek inside AssemblyInfo files to increment version numbers Do deletes of certain files that shouldn't be included in builds / releases Releases code to deployment folders Zips code up for backup purposes Deploy Windows services; start and stop them Etc. Most of those things can be done with just NAnt by itself, but we did build a couple of extension tasks for NAnt to do some things that were specific to our environment. Also, most of those processes above are genericized and reused across a lot of our different application build scripts, so that we don't repeat logic. So it is not simple NAnt code, and not simple build scripts. There are dozens of NAnt files that come together to execute a build. Lately I've been dissatisfied with NAnt for a couple reasons: (1) it's syntax is just awful - programming languages on top of XML are really horrific to maintain, (2) the project seems to have died on the vine; there haven't been a ton of updates lately and it seems like no one is really at the helm. Trying to get it working with .NET 4 has cause some pain points due to this lack of activity. So, with all of that background out of the way, here's my question. Given some of the things that I want to accomplish based on that list above, and given that I am primarily in a .NET shop, but I also need to build non-.NET projects, is there an alternative to NAnt that I should consider switching to? Things on my radar include Powershell (with or without psake), MSBuild by itself, and rake. These all have pros and cons. For example, is MSBuild powerful enough? I remember using it years ago and it didn't seem to have as much power as NAnt. Do I really want to have my team learn Ruby just to do builds using rake? Is psake really mature enough of a project to pin my portfolio to? Is Powershell "too close to the metal" and I'll end up having to write my own build library akin to psake to use it on its own? Are there other tools that I should consider? If you were involved with maintaining a .NET portfolio of significant complexity, what build tool would you be looking at? What does your team currently use?

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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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  • Application Performance Episode 2: Announcing the Judges!

    - by Michaela Murray
    The story so far… We’re writing a new book for ASP.NET developers, and we want you to be a part of it! If you work with ASP.NET applications, and have top tips, hard-won lessons, or sage advice for avoiding, finding, and fixing performance problems, we want to hear from you! And if your app uses SQL Server, even better – interaction with the database is critical to application performance, so we’re looking for database top tips too. There’s a Microsoft Surface apiece for the person who comes up with the best tip for SQL Server and the best tip for .NET. Of course, if your suggestion is selected for the book, you’ll get full credit, by name, Twitter handle, GitHub repository, or whatever you like. To get involved, just email your nuggets of performance wisdom to [email protected] – there are examples of what we’re looking for and full competition details at Application Performance: The Best of the Web. Enter the judges… As mentioned in my last blogpost, we have a mystery panel of celebrity judges lined up to select the prize-winning performance pointers. We’re now ready to reveal their secret identities! Judging your ASP.NET  tips will be: Jean-Phillippe Gouigoux, MCTS/MCPD Enterprise Architect and MVP Connected System Developer. He’s a board member at French software company MGDIS, and teaches algorithms, security, software tests, and ALM at the Université de Bretagne Sud. Jean-Philippe also lectures at IT conferences and writes articles for programming magazines. His book Practical Performance Profiling is published by Simple-Talk. Nik Molnar,  a New Yorker, ASP Insider, and co-founder of Glimpse, an open source ASP.NET diagnostics and debugging tool. Originally from Florida, Nik specializes in web development, building scalable, client-centric solutions. In his spare time, Nik can be found cooking up a storm in the kitchen, hanging with his wife, speaking at conferences, and working on other open source projects. Mitchel Sellers, Microsoft C# and DotNetNuke MVP. Mitchel is an experienced software architect, business leader, public speaker, and educator. He works with companies across the globe, as CEO of IowaComputerGurus Inc. Mitchel writes technical articles for online and print publications and is the author of Professional DotNetNuke Module Programming. He frequently answers questions on StackOverflow and MSDN and is an active participant in the .NET and DotNetNuke communities. Clive Tong, Software Engineer at Red Gate. In previous roles, Clive spent a lot of time working with Common LISP and enthusing about functional languages, and he’s worked with managed languages since before his first real job (which was a long time ago). Long convinced of the productivity benefits of managed languages, Clive is very interested in getting good runtime performance to keep managed languages practical for real-world development. And our trio of SQL Server specialists, ready to select your top suggestion, are (drumroll): Rodney Landrum, a SQL Server MVP who writes regularly about Integration Services, Analysis Services, and Reporting Services. He’s authored SQL Server Tacklebox, three Reporting Services books, and contributes regularly to SQLServerCentral, SQL Server Magazine, and Simple–Talk. His day job involves overseeing a large SQL Server infrastructure in Orlando. Grant Fritchey, Product Evangelist at Red Gate and SQL Server MVP. In an IT career spanning more than 20 years, Grant has written VB, VB.NET, C#, and Java. He’s been working with SQL Server since version 6.0. Grant volunteers with the Editorial Committee at PASS and has written books for Apress and Simple-Talk. Jonathan Allen, leader and founder of the PASS SQL South West user group. He’s been working with SQL Server since 1999 and enjoys performance tuning, development, and using SQL Server for business solutions. He’s spoken at SQLBits and SQL in the City, as well as local user groups across the UK. He’s also a moderator at ask.sqlservercentral.com.

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  • What packages do I need to compile .tex documents using XeLaTeX?

    - by maria
    Hi I'm aware of the existence of similar threads on this forum. But any of replies mach to my problem. I'm using Ubuntu 10.4 and I hadn't problems with fonts till I've decided to use XeLaTeX instead of LaTeX (cf http://tex.stackexchange.com/questions/12347/typesetting-a-document-using-arabic-script/12358#12358). The problem is that I'm not able to compile any .tex document using XeLaTeX, as well as properly display XeLaTeX documentation. As I've learn thanks to mentioned thread, XeLaTeX uses the fonts availables in general in the system. I was trying yo read fontspec documentation, but it opens in pdf with a lot of white gaps and terminal output (quite long) consist mostly of errors. This are just few lines of it: Error: Missing language pack for 'Adobe-Japan1' mapping Error: Unknown font tag 'F5.1' Error (24124): No font in show Error: Unknown font tag 'F5.1' I was trying to compile simple XeLaTeX file: \documentclass{article} \usepackage{fontspec} \setmainfont{Linux Libertine O} \begin{document} Hello World! \end{document} without succes. This is terminal output of compilation: This is XeTeX, Version 3.1415926-2.2-0.9995.2 (TeX Live 2009/Debian) restricted \write18 enabled. entering extended mode (./ex.tex LaTeX2e <2009/09/24> Babel <v3.8l> and hyphenation patterns for english, usenglishmax, dumylang, noh yphenation, polish, loaded. (/usr/share/texmf-texlive/tex/latex/base/article.cls Document Class: article 2007/10/19 v1.4h Standard LaTeX document class (/usr/share/texmf-texlive/tex/latex/base/size10.clo)) (/usr/share/texmf-texlive/tex/xelatex/fontspec/fontspec.sty (/usr/share/texmf-texlive/tex/generic/ifxetex/ifxetex.sty) (/usr/share/texmf-texlive/tex/latex/tools/calc.sty) (/usr/share/texmf-texlive/tex/latex/xkeyval/xkeyval.sty (/usr/share/texmf-texlive/tex/generic/xkeyval/xkeyval.tex (/usr/share/texmf-texlive/tex/generic/xkeyval/keyval.tex))) (/usr/share/texmf-texlive/tex/latex/base/fontenc.sty (/usr/share/texmf-texlive/tex/xelatex/euenc/eu1enc.def) (/usr/share/texmf-texlive/tex/xelatex/euenc/eu1lmr.fd)) fontspec.cfg loaded. (/usr/share/texmf-texlive/tex/xelatex/fontspec/fontspec.cfg))kpathsea: Invalid fontname `Linux Libertine O', contains ' ' ! Font \zf@basefont="Linux Libertine O" at 10.0pt not loadable: Metric (TFM) fi le or installed font not found. \zf@fontspec ...ntname \zf@suffix " at \f@size pt \unless \ifzf@icu \zf@set@... l.3 \setmainfont{Linux Libertine O} ? I can't find Linux Libertine O. Searching for otf- by aptitude gives as result: maria@maria-laptop:/etc/fonts$ aptitude search otf p emdebian-rootfs - emdebian root filesystem support p libotf-bin - A Library for handling OpenType Font - utilities p libotf-dev - A Library for handling OpenType Font - development i libotf0 - A Library for handling OpenType Font - runtime p libotf0-dbg - The libotf libraries and debugging symbols p libpam-dotfile - A PAM module which allows users to have more than one password p livecd-rootfs - construction script for the livecd rootfs p makebootfat - Utility to create a bootable FAT filesystem p otf-ipaexfont - Japanese OpenType font, IPAexFont (IPAexGothic/Mincho) p otf-ipaexfont-gothic - Japanese OpenType font, IPAexFont (IPAexGothic) p otf-ipaexfont-mincho - Japanese OpenType font, IPAexFont (IPAexMincho) p otf-ipafont - Japanese OpenType font set, IPAfont p otf-ipafont-gothic - Japanese OpenType font set, IPA Gothic font p otf-ipafont-mincho - Japanese OpenType font set, IPA Mincho font p otf-stix - the Scientific and Technical Information eXchange fonts p otf-thai-tlwg - Thai fonts in OpenType format p otf-yozvox-yozfont - Japanese proportional Handwriting OpenType font p otf2bdf - generate BDF bitmap fonts from OpenType outline fonts p robotfindskitten - Zen Simulation of robot finding kitten So font in question is not just uninstalled, but not available, if I'm not wrong. Does it mean that I lack some repositoires? I was trying also to apply solution from the thread How do I reinstall default fonts?, but the result is: maria@maria-laptop:~$ sudo apt-get install msttcorefonts [sudo] password for maria: Reading package lists... Done Building dependency tree Reading state information... Done Note, selecting ttf-mscorefonts-installer instead of msttcorefonts ttf-mscorefonts-installer is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. maria@maria-laptop:~$ It seems that is not a usual problem for use of XeLaTeX; nobody in the mentioned thread suggested instalation of anything else than TeX Live. Thanks in advance

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  • Data validation best practices: how can I better construct user feedback?

    - by Cory Larson
    Data validation, whether it be domain object, form, or any other type of input validation, could theoretically be part of any development effort, no matter its size or complexity. I sometimes find myself writing informational or error messages that might seem harsh or demanding to unsuspecting users, and frankly I feel like there must be a better way to describe the validation problem to the user. I know that this topic is subjective and argumentative. StackOverflow might not be the proper channel for diving into this subject, but like I've mentioned, we all run into this at some point or another. There are so many StackExchange sites now; if there is a better one, feel free to share! Basically, I'm looking for good resources on data validation and user feedback that results from it at a theoretical level. Topics and questions I'm interested in are: Content Should I be describing what the user did correctly or incorrectly, or simply what was expected? How much detail can the user read before they get annoyed? (e.g. Is "Username cannot exceed 20 characters." enough, or should it be described more fully, such as "The username cannot be empty, and must be at least 6 characters but cannot exceed 30 characters."?) Grammar How do I decide between phrases like "must not," "may not," or "cannot"? Delivery This can depend on the project, but how should the information be delivered to the user? Should it be obtrusive (e.g. JavaScript alerts) or friendly? Should they be displayed prominently? Immediately (i.e. without confirmation steps, etc.)? Logging Do you bother logging validation errors? Internationalization Some cultures prefer or better understand directness over subtlety and vice-versa (e.g. "Don't do that!" vs. "Please check what you've done."). How do I cater to the majority of users? I may edit this list as I think more about the topic, but I'm genuinely interest in proper user feedback techniques. I'm looking for things like research results, poll results, etc. I've developed and refined my own techniques over the years that users seem to be okay with, but I work in an environment where the users prefer to adapt to what you give them over speaking up about things they don't like. I'm interested in hearing your experiences in addition to any resources to which you may be able to point me.

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  • SSIS Reporting Pack update

    - by jamiet
    Its been a while since I last posted anything in regard to SSIS Reporting Pack, the most recent release being on 27th May 2012, so here is a short update. There is still lots of work to do on SSIS Reporting Pack; lots more features to add, lots of performance work to be done, and a few bug fixes too. I have also been (fairly) hard at work on a framework to be used in conjunction with SSIS 2012 that I refer to as the Restart Framework (currently residing at http://ssisrestartframework.codeplex.com/). There is still much work to be done on the Restart Framework (not least some useful documentation on how to use it) which is why I haven’t mentioned it publicly before now although I am actively checking in changes. One thing I am considering is amalgamating the two projects into one; this would mean I could build a suite of reports that both work against the SSIS Catalog (what you currently know as “SSIS Reporting Pack”) and also against this Restart Framework thing. No decision has been made as yet though. There have been a number of bug reports and feature suggestions for SSIS Reporting Pack added to the Issue Tracker. Thank you to everyone that has submitted something, rest assured I am not going to ignore them forever; my time is at a premium right now unfortunately due to … well … life… so working on these items isn’t near the top of my priority list. Lastly, I am actively using SSIS Reporting Pack in a production environment right now and I’m happy to report that it is proving to be very useful. One of the reports that I have put a lot of time into is execution executable duration.rdl and its proving very adept at easily identifying bottlenecks in our SSIS 2012 executions: The report allows you to browse through the hierarchy of executables in each execution and each bar represents the duration of each executable in relation to all the other executables; longer bars being a good indication of where problems might lie. The colour of the bar indicates whether it was successful or not (green=success). Hovering over a bar brings up a tooltip showing more information about that executable. Clicking on a bar allows you to compare this particular instance of the executable against other executions. Please do let me know if you are using SSIS Reporting Pack. I would like to hear any anecdotes you might have, good or bad. @Jamiet

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