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• Removing a File Association

  - by Anthony Trudeau

  I found a rather simple way to remove a file association (default program) tonight that I thought others might find useful.  I found it after discovering that Windows 7 doesn't provide a straight-forward way of removing an association.Windows 7 provides a nice interface in the Control Panel for changing associations (Programs > Default Programs > Set Associations), but once you have one you cannot get rid of it.  The Registry is an obvious choice, because that's where the associations are stored.  In fact, the HKEY_CLASSES_ROOT hive has the association, but there is also a key you need to delete somewhere in the HKEY_CURRENT_USER hive.Doing a little poking around, I discovered a command line program called ASSOC that'll do it.  And typing HELP ASSOC confirms that it was what I was looking for.  The solution to my problem turned out to be as simple as typing ASSOC .BIN="" on the command line.

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• Back from Istanbul - Presentations available for download

  - by Javier Puerta

     (Picture by Paul Thompson, 14-March-2012) On March 14-15th we have celebrated our 2012 Exadata Partner Community EMEA Forum, in Istanbul, Turkey. It has been an intense two days, packed with great content and a lot of networking. Organizing it jointly with the Manageability Partner Forum has allowed participants to benefit from the content of the Manageability sessions, which is a topic that is becoming key as we move to cloud architectures. During the sessions we have listened to two thought-leaders in our industry, Ron Tolido, from Capgemni, and Julian Dontcheff, from Accenture. We thank our Exadata partners -ISE (Germany), Inserve (Sweden), Fors (Russia), Linkplus (Turkey) and Sogeti,  for sharing with the community their experiences in selling and implementing Exadata and Manageability projects. The slide decks used in the presentations are now available for download at the Exadata Partner Community Collaborative Workspace (for community members only - if you get an error message, please register for the Community first).I want to thank all who have participated at the event, and look forward to meeting again at next year's Forum.

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• Back from Istanbul - Presentations available for download

  - by Javier Puerta

  (Photo by Paul Thompson, 14-March-2012) On March 14-15th we have celebrated our 2012 Manageability Partner Community EMEA Forum, in Istanbul, Turkey. It has been an intense two days, packed with great content and a lot of networking. Organizing it jointly with the Exadata Partner Forum has allowed participants to benefit also from the content of the Exadata sessions, which is a key topic as an infrastructure building block as we move to cloud architectures. During the sessions we have listened to two thought-leaders in our industry, Ron Tolido, from Capgemni, and Julian Dontcheff, from Accenture. We thank our Manageability partner Capgemini/Sogeti,  for sharing with the community their experiences in developing their Testing offering based on Oracle products. The slide decks used in the presentations are now available for download at the Manageability Partner Community Collaborative Workspace (for community members only - if you get an error message, please register for the Community first) I want to thank all who have participated at the event, and look forward to meeting again at next year's Forum.

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• Separate shaders from HTML file in WebGL

  - by Chris Smith

  I'm ramping up on WebGL and was wondering what is the best way to specify my vertex and fragment shaders. Looking at some tutorials, the shaders are embedded directly in the HTML. (And referenced via an ID.) For example: <script id="shader_1-fs" type="x-shader/x-fragment"> precision highp float; void main(void) { // ... } </script> <script id="shader_1-vs" type="x-shader/x-vertex"> attribute vec3 aVertexPosition; uniform mat4 uMVMatrix; // ... My question is, is it possible to have my shaders referenced in a separate file? (Ideally as plain text.) I presume this is straight forward in JavaScript. Is there essentially a way to do this: var shaderText = LoadRemoteFileOnSever('/shaders/shader_1.txt');

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• FIX adapter for StreamInsight

  - by Roman Schindlauer

  Over the last couple of month, Rapid Addition, a leading FIX and FAST solutions provider for the financial services industry, has been working closely with the StreamInsight team to enable StreamInsight Complex Event Processing queries to receive input feeds from Rapid Addition’s FIX engine and to send result events back into FIX. Earlier today, Toby Corballis from Rapid Addition blogged about these capabilities here on HedgeHogs. We are very excited to demonstrate these capabilities at the SIFMA conference in New York. The session will take place tomorrow, Tuesday, 11am – 12noon, at the Hilton Hotel New York, 1335 Avenue of the Americas, East Suite 4th floor. Torsten Grabs from the StreamInsight team will join the RapidAddition and local Microsoft teams for the session.  If you are interested in attending the session please register at http://bit.ly/c0bbLL. We are looking forward to meeting you tomorrow at SIFMA! Best regards,The StreamInsight Team

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• 2D XNA Tile Based Lighting. Ideas and Methods

  - by Twitchy

  I am currently working on developing a 2D tile based game, similar to the game 'Terraria'. We have the base tile and chunk engine working and are now looking to implement lighting. Instead of the tile based lighting that terraria uses, I want to implement point lights for torches, etc. I have seen Catalin Zima’s shader based shadows, and this would be perfect for the torches (point lights). My problem here is that the tiles on the surface of the world need to be illuminated, doing this by a big point light is firstly extremely expensive, but also doesn't look right. What I need help with (overall) is... To have a surface that is illuminated regardless of torches, etc. To also have point lights, or smooth tile lighting similar to Catalin Zima’s shader based shadows. Looking forward to your replies. Any ideas are appreciated.

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• Android device - C++ OpenGL 2: eglCreateWindowSurface invalid

  - by ThreaderSlash

  I am trying to debug and run OGLES on Native C++ in my Android device in order to implement a native 3D game for mobile smart phones. The point is that I got an error and see no reason for that. Here is the line from the code that the debugger complains: mSurface = eglCreateWindowSurface(mDisplay, lConfig, mApplication->window, NULL); And this is the error message: Invalid arguments ' Candidates are: void * eglCreateWindowSurface(void *, void *, unsigned long int, const int *) ' --x-- Here is the declaration: android_app* mApplication; EGLDisplay mDisplay; EGLint lFormat, lNumConfigs, lErrorResult; EGLConfig lConfig; // Defines display requirements. 16bits mode here. const EGLint lAttributes[] = { EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, EGL_BLUE_SIZE, 5, EGL_GREEN_SIZE, 6, EGL_RED_SIZE, 5, EGL_SURFACE_TYPE, EGL_WINDOW_BIT, EGL_RENDER_BUFFER, EGL_BACK_BUFFER, EGL_NONE }; // Retrieves a display connection and initializes it. packt_Log_debug("Connecting to the display."); mDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); if (mDisplay == EGL_NO_DISPLAY) goto ERROR; if (!eglInitialize(mDisplay, NULL, NULL)) goto ERROR; // Selects the first OpenGL configuration found. packt_Log_debug("Selecting a display config."); if(!eglChooseConfig(mDisplay, lAttributes, &lConfig, 1, &lNumConfigs) || (lNumConfigs <= 0)) goto ERROR; // Reconfigures the Android window with the EGL format. packt_Log_debug("Configuring window format."); if (!eglGetConfigAttrib(mDisplay, lConfig, EGL_NATIVE_VISUAL_ID, &lFormat)) goto ERROR; ANativeWindow_setBuffersGeometry(mApplication->window, 0, 0, lFormat); // Creates the display surface. packt_Log_debug("Initializing the display."); mSurface = eglCreateWindowSurface(mDisplay, lConfig, mApplication->window, NULL); --x-- Hope someone here can shed some light on it.

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• Optimizing hash lookup & memory performance in Go

  - by Moishe

  As an exercise, I'm implementing HashLife in Go. In brief, HashLife works by memoizing nodes in a quadtree so that once a given node's value in the future has been calculated, it can just be looked up instead of being re-calculated. So eg. if you have a node at the 8x8 level, you remember it by its four children (each at the 2x2 level). So next time you see an 8x8 node, when you calculate the next generation, you first check if you've already seen a node with those same four children. This is extended up through all levels of the quadtree, which gives you some pretty amazing optimizations if eg. you're 10 levels above the leaves. Unsurprisingly, it looks like the perfmance crux of this is the lookup of nodes by child-node values. Currently I have a hashmap of {&upper_left_node,&upper_right_node,&lower_left_node,&lower_right_node} -> node So my lookup function is this: func FindNode(ul, ur, ll, lr *Node) *Node { var node *Node var ok bool nc := NodeChildren{ul, ur, ll, lr} node, ok = NodeMap[nc] if ok { return node } node = &Node{ul, ur, ll, lr, 0, ul.Level + 1, nil} NodeMap[nc] = node return node } What I'm trying to figure out is if the "nc := NodeChildren..." line causes a memory allocation each time the function is called. If it does, can I/should I move the declaration to the global scope and just modify the values each time this function is called? Or is there a more efficient way to do this? Any advice/feedback would be welcome. (even coding style nits; this is literally the first thing I've written in Go so I'd love any feedback)

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• Root and Install ADB on Your Kindle Fire with SuperOneClick

  - by Jason Fitzpatrick

  The Kindle Fire, fresh into the hands of consumers across the country, has already been rooted and accessed with ADB. Right now the hack is awesome but of limited utility–it highlights how easily the Kindle Fire can be rooted and prepared for a custom ROM but for the moment you’ll find there aren’t many custom ROMs floating around. Still, we’re excited by the news and looking forward to where, beyond the stock configuration, people take the Kindle Fire. Hit up the link below for the discussion thread on AndroidForums outlining how to root your Kindle Fire. How-To Get ADB Running AND Root with SuperOneClick [AndroidForum via PhanDroid] HTG Explains: How Hackers Take Over Web Sites with SQL Injection / DDoS Use Your Android Phone to Comparison Shop: 4 Scanner Apps Reviewed How to Run Android Apps on Your Desktop the Easy Way

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• Bad style programming, am I pretending too much?

  - by Luca

  I realized to work in an office with a quite bad code base. The base library implemented in years and years is quite limited, and most of that code is, honestly, horrible. Projects developed in the office are very large. Fine. I could define me a "perfectionist" (but often I'm not), and I thought to refactor an application (really a portion), which need a new (complex) feature. But, today, I really realized that it's not possible to refactor that application modules with a reasonable time (say, 24/26 hours, respect the avaialable time for the task, which is 160 hours). I'm talking about (I am a bit ashamed to say) name collisions, large and frequent cut & paste code, horrible and misleading naming, makefiles without dependencies (!), application login is spread randomly across many different sources, dead code, variable aliasing, no assertion, no documentation, very long source files, bad/incomplete include file definition, (this is emblematic!) very frequent extern declaration of variables and functions, ... I'm sure to continue ... buffer overflows because sprintf, indentation (!), spacing, non existent const modifier usage. I would say that every source line was written quite randomly when needed, without keeping in mind some design (at least, the obvious one). (Am I in hell?) The problem arises when the application is developed by a colleague of mine. I felt very frustrated. So, I decided to expose the "situation" to my colleague; at the end, that was a bad idea. He is justified in saying that "the application was developed in haste, so it is natural that it is written vaguely; you are wasting time to think and implement an elegant implementation" .... I'm asking too much from my colleague to write readable code, which is managed and documented? I expect too much in not having to read thousands of lines of code to understand how a particular logic?

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• D, Vala or Go for game development [on hold]

  - by Sheosi

  I'm looking forward to choose some compiled language for my 3D engine. The engine it's written in C++, however I would like to help coders by using a language which is good for games. I came with these three: Vala, D and Go. The engine is being made to write as less code as posible, also the "main" language it's going to be Lua so any of these will be the "advanced" one (mainly things which could affect performance or . Because of all this and the fact that I heard that Go is good for small projects I thought it would be a pretty good option, however it does not seems to be made (at least originally) for games and also some say I can have trouble with garbage collection in games. So what do you think? Do you have any experience with any of these three in games? How was it?

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• Oracle Data Integrator at Oracle OpenWorld 2012: Demonstrations

  - by Irem Radzik

  By Mike Eisterer Oracle OpenWorld is just a few days away and  we look forward to showing Oracle Data Integrator' comprehensive data integration platform, which delivers critical data integration requirements: from high-volume, high-performance batch loads, to event-driven, trickle-feed integration processes, to SOA-enabled data services.  Several Oracle Data Integrator demonstrations will be available October 1st through the3rd : Oracle Data Integrator and Oracle GoldenGate for Oracle Applications, in Moscone South, Right - S-240 Oracle Data Integrator and Service Integration, in Moscone South, Right - S-235 Oracle Data Integrator for Big Data, in Moscone South, Right - S-236 Oracle Data Integrator for Enterprise Data Warehousing, in Moscone South, Right - S-238 Additional information about OOW 2012 may be found for the following demonstrations. If you are not able to attend OpenWorld, please check out our latest resources for Data Integration.  

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• tomcat behind apache

  - by dannynjust

  i am trying to use the mod_proxy_ajp to forward all the request from tocat.example.com to example.com:8080 here is what the tomcat server.xml looks like: <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" /> and here is the apache.conf config: <VirtualHost *:80> ServerName tomcat.example.com ServerAdmin [email protected] ErrorLog logs/tomcat.example.com-error_log CustomLog logs/tomcat.example.com-access_log common <Proxy *> AddDefaultCharset Off Order deny,allow Allow from all </Proxy> ProxyPass / ajp://example:8009/ ProxyPassReverse / ajp://example:8009/ </VirtualHost> but it is not working, any idea?

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• How does bing-bot( is that the right spider-name? ) and googlebot interpret 301 redirect?

  - by jbcurtin

  I've been looking for documentation on how the Microsoft and Google bots interpret 301 redirects. It seems that google-bot stores documents on a url based index system. But I haven't been able to figure out how bing works. Should I assume that they are still working towards coping everyone else and assume they use an algorithm close to google? Is it best to just forward a page to a new location via Javascript? I think this might be a blackhat trick, but how would I tell the bots that it's not? Is 301 redirect my best option and I just have to bit the bullet because said pages are no longer in existence? What other options do I have that I might not be aware of?

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• I feel stuck in the center of Python, How to get past beginner

  - by Isov5

  I really apologize if this doesn't follow the S.O rules but I need a little help, I personally still classify myself as a beginner in python, Yet I've wrote a very small and VERY SURE impractical program for my boss to use. I know I'm still a beginner because simple things still perplex me but every book I read for beginners honestly just rehashes what I do already know but every 'more advanced' book doesn't really allow me to learn, they depend on example files and I never really understand why they built 'said' function or 'said' class. So onto my question... Is there any recommendations on a book or ANYTHING that pushes me out of this stage, I've used head first and normally they are really good but my issue there is they have me back tracking just to move forward again, It worked in HTML but its confusing in Python, basically I think I need to build a program while following along, Again I like HeadFirst's style but I need something that isn't going to make me have to remember one thing just to forget it... for record, I've checked into some O'Reilly books

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• C IDE for Mac needed

  - by StasM

  I'm looking for heavy-duty C/C++ IDE for Mac that would satisfy the following criteria: Work with big projects (~5000 files, some of them 100K big) efficiently. Have good navigation both file-based and symbol-based - i.e. "go to file", "go to function" etc. with autocompletion support. Support for "go to declaration/definition" for symbols - functions, structures, etc. Auto-adding new files in folders already in the project. Support for code completion for values, function names, etc. At least rudimentary CPP macro understanding - i.e. #define foo bar then foo() should take me either to #define or to actual bar. I understand full CPP parsing may be hard, but I hope for at least the obvious cases. Support for displaying parameter names/types by function name, preferably - integrated with the previous item, for functions defined in the project. Support for libc would be nice too :) (optional) Cross-project search support (I can manage with grep -r if everything else works) (optional) SVN support, at least to some extent (update, commit, mark updated) Is there such editor around? Free would be nice, but I'm ready to part with some money if it's good enough. I'm using TextMate now but I'm not satisfied with it. Tried Xcode but it seems to not be able to handle a large project - it just crashed...

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• DNS and Wildcard CNAME

  - by Thomas Chapman

  Whenever I attempt to make a record for *.schneiderdonnelly.com.au and CNAME it, I get two errors: You can't mix CNAME/MX records together using the same hostname. Domain root's cannot be CNAME's, however you can web-forward this record to www.schneiderdonnelly.com.au instead for the same effect. I've read it's possible so why can't I make it work? I donated $5 to be a premium member and I've been trying to make it work for yonks. http://i.stack.imgur.com/D9Ui5.jpg This is how I want it to appear. The last record. I am prepared to swap DNS providers as long as they're free.

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• Awarded Visual Studio ALM MVP for 2012!

  - by Jakob Ehn

  Today I received an email from Microsoft stating that: Dear Jakob Ehn, Congratulations! We are pleased to present you with the 2012 Microsoft® MVP Award! This award is given to exceptional technical community leaders who actively share their high quality, real world expertise with others. We appreciate your outstanding contributions in Visual Studio ALM technical communities during the past year.   This is incredibles news and I really want to thank both the people at Microsoft who nominated me and some of the (now) fellow MVP’s that I have worked with over the last year, both as part of the Visual Studio ALM Rangers program and as part of the TFS Build Extensions community project, in particular Mike Fourie and of course my colleague and main source of inspiration Terje Sandström    I’m really looking forward to this year, it’s going to be a blast!

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• Webcast Replay: OVCA Launch Channel Update

  - by Claudia Caramelli-Oracle

  Last 28 May we held a webcast about Oracle Virtual Compute Appliance (OVCA) launch update for the channel. A brief product overview of OVCA has been followed by some great OPN program content, resell criteria, OPN Incentive Program and Demo Equipment Program details. You can download the slides HERE, but remember, you need to be a registered member of the community to be able to access the workspace. If you are not a member yet, you can register here. We look forward to welcoming you to another webcast soon!

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• Advice on starting a new job

  - by Sisiutl

  In a week I will start a new job at a manufacturing company managing the development of a new eCommerce site. The company scores about a 3 on the "Joel" test. I will inherit 3 programmers who developed the company web site and do general IT programming. I have the grey hair and credentials to have their initial respect but I'm an engineer, not a manager. I'm looking for practical advise - particularly for the first 90 days - on how to establish myself, keep the team together, and move forward.

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• Colleague unwilling to use unit tests "as it's more to code"

  - by m.edmondson

  A colleague is unwilling to use unit tests and instead opting for a quick test, pass it to the users, and if all is well it is published live. Needless to say some bugs do get through. I mentioned we should think about using unit tests - but she was all against it once it was realised more code would have to be written. This leaves me in the position of modifying something and not being sure the output is the same, especially as her code is spaghetti and I try to refactor it when I get a chance. So whats the best way forward for me?

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• REGISTER NOW: FY13 LIVE Oracle PartnerNetwork Kickoff is June 26th/27th

  - by mseika

  REGISTER NOW: FY13 LIVE Oracle PartnerNetwork Kickoff is June 26th/27th Join us for a live online event hosted by the Oracle PartnerNetwork team as we kickoff FY13. Hear messages from Judson Althoff, Oracle's SVP of Worldwide Alliances & Channels, as well as other Oracle executives, thought leaders, and partners. During Partner Kickoff you will see: Judson Althoff on FY12 recap and FY13 call to action Executive Addresses from Mark Hurd, Thomas Kurian, John Fowler, and Regional Sales Executives Embed, Sell and Implement the Full Portfolio Business Opportunities for ISV / OEM’s, System Integrators, and Channel Partners Q&A with Regional Alliances & Channels Executives Please register for your regions Partner Kickoff at the appropriate link below: Region Date / Time NAS Tuesday, June 26 @ 8:30 am PT EMEA Tuesday, June 26 @ 2:00 pm BST LAD Tuesday, June 26 @ 2:00pm EDT (Miami) / 3:00pm BRT (Sao Paulo) JAPAN Wednesday, June 27 @ 10:00 am JST APAC Wednesday, June 27 @ 8:30 am IST (Bangalore) / 11:00 am SGT (Singapore)Wednesday, June 27 @ 1:00 pm AEST (Sydney) Be sure to follow us around the web to get the latest on OPN! We look forward to seeing you online,The Oracle PartnerNetwork Team

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• REGISTER NOW: FY13 LIVE Oracle PartnerNetwork Kickoff is June 26th/27th

  - by mseika

    REGISTER NOW: FY13 LIVE Oracle PartnerNetwork Kickoff is June 26th/27th Join us for a live online event hosted by the Oracle PartnerNetwork team as we kickoff FY13. Hear messages from Judson Althoff, Oracle's SVP of Worldwide Alliances & Channels, as well as other Oracle executives, thought leaders, and partners. During Partner Kickoff you will see: Judson Althoff on FY12 recap and FY13 call to action Executive Addresses from Mark Hurd, Thomas Kurian, John Fowler, and Regional Sales Executives Embed, Sell and Implement the Full Portfolio Business Opportunities for ISV / OEM’s, System Integrators, and Channel Partners Q&A with Regional Alliances & Channels Executives Please register for your regions Partner Kickoff at the appropriate link below: Region Date / Time NAS Tuesday, June 26 @ 8:30 am PT EMEA Tuesday, June 26 @ 2:00 pm BST LAD Tuesday, June 26 @ 2:00pm EDT (Miami) / 3:00pm BRT (Sao Paulo) JAPAN Wednesday, June 27 @ 10:00 am JST APAC Wednesday, June 27 @ 8:30 am IST (Bangalore) / 11:00 am SGT (Singapore)Wednesday, June 27 @ 1:00 pm AEST (Sydney) Be sure to follow us around the web to get the latest on OPN! We look forward to seeing you online,The Oracle PartnerNetwork Team

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• REGISTER NOW: FY13 LIVE Oracle PartnerNetwork Kickoff is June 26th/27th

  - by mseika

  REGISTER NOW: FY13 LIVE Oracle PartnerNetwork Kickoff is June 26th/27th Join us for a live online event hosted by the Oracle PartnerNetwork team as we kickoff FY13. Hear messages from Judson Althoff, Oracle's SVP of Worldwide Alliances & Channels, as well as other Oracle executives, thought leaders, and partners. During Partner Kickoff you will see: Judson Althoff on FY12 recap and FY13 call to action Executive Addresses from Mark Hurd, Thomas Kurian, John Fowler, and Regional Sales Executives Embed, Sell and Implement the Full Portfolio Business Opportunities for ISV / OEM’s, System Integrators, and Channel Partners Q&A with Regional Alliances & Channels Executives Please register for your regions Partner Kickoff at the appropriate link below: Region Date / Time NAS Tuesday, June 26 @ 8:30 am PT EMEA Tuesday, June 26 @ 2:00 pm BST LAD Tuesday, June 26 @ 2:00pm EDT (Miami) / 3:00pm BRT (Sao Paulo) JAPAN Wednesday, June 27 @ 10:00 am JST APAC Wednesday, June 27 @ 8:30 am IST (Bangalore) / 11:00 am SGT (Singapore)Wednesday, June 27 @ 1:00 pm AEST (Sydney) Be sure to follow us around the web to get the latest on OPN! We look forward to seeing you online,The Oracle PartnerNetwork Team

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• Watch Customer Concepts TV and Find Out How Leading Organizations Are Creating Engaging Customer Journeys

  - by Jeri Kelley

  The customer journey has changed dramatically. Customers have far more knowledge and far more power. Managing the new customer experience isn’t just about increasing profitability. For many organizations it’s about survival.  To survive, organizations must deliver relevant, personalized experiences that engage customers at each step in their journey, but where do organizations start? ??To learn more, I’m looking forward to tomorrow's Customer Concepts Web TV show.   On October 23rd, experts from Oracle and various successful businesses such as Euroffice will discuss how the customer journey has fundamentally changed and will share best practices for adapting your organization so you can truly engage customers. These Customer Concepts Web TV programs are an excellent way of keeping up with the very latest thinking in the field of customer experience.  Register for tomorrow’s event now at: http://bit.ly/RqPSL3

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