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  • WCF/webservice architecture question

    - by M.R.
    I have a requirement to create a webservice to expose certain items from a CMS as a web service, and I need some suggestions - the structure of the items is as such: item - field 1 - field 2 - field 3 - field 4 So, one would think that the class for this will be: public class MyItem { public string ItemName { get; set; } public List<MyField> Fields { get; set; } } public class MyField { public string FieldName { get; set; } public string FieldValue { get; set; } //they are always string (except - see below) } This works for when its always one level deep, but sometimes, one of the fields is actually a point to ANOTHER item (MyItem) or multiple MyItem (List<MyItem>), so I thought I would change the structure of MyField as follows, to make FieldValue as object; public class MyField { public string FieldName { get; set; } public object FieldValue { get; set; } //changed to object } So, now, I can put whatever I want in there. This is great in theory, but how will clients consume this? I suspect that when users make a reference to this web service, they won't know which object is being returned in that field? This seems like a not-so-good design. Is there a better approach to this?

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  • Sharing internet connection over VPN in Windows XP

    - by Nigel Hawthorne
    How can I share my internet connection with VPN clients using the Windows XP built-in VPN server? I want to be able to use my home internet connection (on an XP machine) from my anywhere using my laptop (Windows 7 machine). The built-in VPN server in XP and the VPN client in Windows 7 seem to do a great job of giving me access to both machines securely over the internet, but I cannot find a way to use ICS in conjunction with the incoming connection to give access to my home internet connection to my laptop remotely. Is there a way to do this? or is there an alternative VPN server software that is not limited to only local access?

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  • New Certification Exam Prep Seminar: Java EE 5/6 Web Component Developer

    - by Brandye Barrington
    I'm happy to announce the availability of a brand new Exam Prep Seminar titled Certification Exam Prep Seminar: Java EE 5/6 Web Component Developer. This new Exam Prep Seminar is available standalone, and will soon be available through a Certification Value Package, which includes (1) the Seminar, and (2) a certification exam voucher with a free retake. For those of you preparing for the Oracle Certified Professional, Java EE 5 Web Component Developer certification or the Oracle Certified Expert, Java Platform, EE 6 Web Component Developer certification, this seminar is a great value and and an excellent way to gain valuable insight from one of Oracle University's top instructors. This Exam Prep Seminar will accelerate your preparation, make your prep time more efficient and give you insight to the breadth and depth of the certification exam. This type of exam preparation has traditionally only been available at the Oracle OpenWorld conference, but is now available to anyone through this new format. Of course with online video, you can now start, stop, rewind, and review as needed! Also note that because this seminar is in the Oracle Training On Demand format, you can also watch it on your your iPad through Oracle University's new free iPad app. QUICK LINKS SEMINAR: Certification Exam Prep Seminar: Java EE 5/6 Web Component Developer VALUE PACKAGE: Coming Soon! EXAM: 1Z0-858  Java Enterprise Edition 5 Web Component Developer Certified Professional Exam EXAM: 1Z0-859  Java Enterprise Edition 5 Web Component Developer Certified Professional Upgrade Exam EXAM: 1Z0-899  Java EE 6 Web Component Developer Certified Expert Exam CERTIFICATION: Oracle Certified Professional, Java EE 5 Web Component Developer CERTIFICATION: Oracle Certified Expert, Java Platform, EE 6 Web Component Developer

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  • Metacity toggle fullscreen not working under Lucid; worked with Karmic.

    - by Andy
    Hi all, I'm working on a 11" screen, so I frequently want to use applications in fullscreen. I'm no expert on GNOME, but I remember doing a search a while back, and finding out about metacity, and how to use that to allow any window to be put in fullscreen. This worked great on Karmic, but it doesn't seem to be working under Lucid. Here's what I do. Run gconf-editor. Go to /apps/metacity/window_keybindings. Change toggle_fullscreen from disabled to <Control><Shift>F. Unfortunately it doesn't work. I know that I've got the right syntax because I can see other shortcuts and use them as a template. I have no idea what's wrong, and no idea how to move forwards/debug. Any suggestions much appreciated. TIA Andy

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  • Inconsistent movement / line-of-sight around obstacles on a hexagonal grid

    - by Darq
    In a roguelike game I've been working on, one of my core design goals has been to allow the player to "Play the game, not the grid." In essence, I want the player's positioning to be tactical because of elements in the game world, not simply because some grid tiles are more advantageous than others, in relation to enemies. I am fine with world geometry not being realistic, but it needs to be consistent. In this process I have ran into most of the common problems (Square tiles? Diagonal movement, LOS, corner cases, etc.) and have moved to a hexagonal tile grid. For the most part this has been great, and I've not had too many inconsistencies. Recently however I have been stumped by the following: Points A and B are both distance 4 from the player (red lines). Line-of-sight to both are blocked by walls (black tiles). However, due to the hexagonal grid, A can be reached in 4 moves, whereas B requires 5 moves (blue lines). On a hex grid, "shortest path" seems divorced from "direct path", there may be multiple shortest paths to any point, but there is only one direct path (or two in some situations). This is fine, geometry need not be realistic. However this also seems inconsistent, similar obstacles are more effective in some positions than in others. A player running away from an enemy should be able to run in any direction, increasing the distance between the two actors. However when placing obstacles or traps between themselves and enemies, the player is best served by running in one of the six directions that don't have multiple shortest paths. Is there a way to rationalise this? Am I missing something that makes this behaviour consistent? Or is there a way to make this behaviour consistent? I am most certainly over-thinking this, but as it is one of my goals, I should do it due diligence.

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  • Oracle Virtualization Friday Spotlight - October 18, 2013

    - by Monica Kumar
    Opening The Oracle VM Templates Blackbox Oracle VM Templates give you the efficiency of speed and the assurance of no guess work. For those in the know, Oracle VM Guest Additions is a great way to empower you to do more interesting things with the Templates. Today’s blog article is to share the secrets with those who are not content with just treating Oracle VM Templates as a black box. Oracle VM Guest Additions is a set of packages that can be installed on the guest operating system of a virtual machine running in the Oracle VM environment. These packages provide the tools to allow bi-directional communication directly between the Oracle VM Manager and the operating system running within the virtual machine. OK here’s where the ‘power-user’ part comes in…. This gives your fine-grained control over the configuration and behavior of components running within the virtual machine directly from Oracle VM Manager. You now have the ability to see and direct what goes on inside your VM from Oracle VM Manager. Get a reporting on IP addressing Use the template configuration facility to automatically configure virtual machines as they are first started Send messages directly to a virtual machine to trigger programmed events Query a virtual machine to obtain information pertaining to previous messages Enough of the theory! To get hands-on how-to’s and talk directly with the product expert on Oracle VM Guest Additions, Robbie de Meyer, or Oracle VM Templates for Oracle Database and RAC Template expert Saar Maoz, join us for the Oct 24th live webcast. You can also read more about the Oracle VM Guest Additions in the whitepaper.

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  • Reading source code to learn

    - by perl.j
    As you develop as a programmer, IMO, you begin to see different practices, different Algorithms, and "more than one way to do it". Seeing this code can be a great learning experience for you, even though you did not write the code. But is doing this only going to confuse you? For example, let's say you have a library in any language that was created by a colleague, and you have been using it for a while. You decide to look at the actual source code, regardless of how extensive it is, and get a better look at how this library is written. For the sake of example, the function you use most often from this library is the max function, which finds the largest of two numbers. But this function is a lot more complicated than it needs to be. The way it is written is confusing the heck out of you, and you don't know how this works. Will this make you a better programmer, because you realize how complicated it is for such a simple function, or will it make you a worse coder because you feel less confidant? So my question, in general, is does reading source code make you a better programmer and if so how? If not why do people still do it?.

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  • What to do with a Blowfish Key?

    - by Encoderer
    I just completed backing up 8 years of my Gmail using http://gmvault.org I selected the --encrypt option which uses Blowfish encryption. According to their site: Emails can be encrypted with the option -e --encrypt. With that option, the Blowfish encryption is used to crypt your emails and chats and the first time you activate it, a secret key is randomly generated and stored in $HOME/.gmvault/token.sec. Keep great care of the secret key as if you loose or delete it your stored emails won't be readable anymore !!! I'm using OSX Lion. I'm a software engineer but far from an encryption expert. What should I do with this key? It seems like leaving it where it is now (alongside the emails) sort of misses the point of encrypting them to begin with.

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  • ASUS EPC 1015CX won't boot with display after installing additional drivers

    - by Dinesh
    I have a ASUS EPC 1015CX with Ubuntu 12.04 LTS installed using wubi alongside Windows 7. It worked perfectly after installing except that the supported screen resolution was only 800*600 instead of 1024*600. The specifications of the 1015CX device can be found here I tried installing additional drivers which was Broadcom for wireless and Cedarview-drm. By this time there was no display coming up after the boot. I could hear a voice and then the letters I typed got pronounced correctly. So, I guessed the issue has to be with the graphic terminal. I tried repair broken packages in the menu and booted and the display is now at 1024*600. But, if I restart normally the problem continues like before. As per what I found out after searching, I again opened additional drivers and installed Cedarview-graphics-driver. I tried restarting hoping it will work. But again, the result was same. There was no display but the system was working. I did more searching and followed the instructions found here. But still the result was same. I am keen to switch to linux from windows after hearing and learning great things about it. I know this community is good and always helping. I wanted to thank you all for the help in advance. Please let me know what I am doing wrong and help me to switch to linux from this same old windows.

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  • Oracle Vanquisher: A Data Center Optimization Adventure to Debut at Oracle OpenWorld

    - by Oracle OpenWorld Blog Team
    Heat. Downtime. Site-wide outages. Legacy hardware. Security holes. These are all threats to your data center. What if you could vanquish them to simplify your IT and accelerate business innovation and growth? Find out how - play Oracle Vanquisher, a new data center optimization video game that will be showcased at Oracle OpenWorld (Hardware DEMOgrounds, Moscone South Hall).Playing Oracle Vanquisher, you'll be armed with a cool Oracle vacuum pack suit and a strategic IT roadmap. You'll thwart threats and optimize your data center to increase your company’s stock price and boost your company’s position. Of course, optimizing your data center is far more than a great game. For more information, visit the Oracle Optimized Data Center homepage or check out these targeted Oracle OpenWorld keynotes and sessions:KeynotesShift Complexity, with Oracle President Mark HurdMonday, October 1, 8:00 a.m. - 9:30 a.m.Moscone North, Hall DOracle Cloud Infrastructure and Engineered Systems: Fast, Reliable, Virtualized, with Oracle Executive Vice President John FowlerWednesday, October 3, 8:00 a.m. - 9:45 a.m.Moscone North, Hall DSessions Oracle Linux Oracle Optimized Solutions Oracle Solaris SPARC Servers Storage SPARC SuperCluster Oracle VM Server Virtualization Desktop Virtualization

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  • WebSocket@QCon NY

    - by reza_rahman
    QCon NY was held on June 10-14 at the New York Marriott/Brooklyn Bridge. Part of the QCon franchise, this is one of the most significant IT conferences in the greater NYC area. It was an honor to do a WebSocket (JSR 356) talk at the conference. Unfortunately, my schedule was such that I could only attend one day of the conference and did not really get a chance to attend many sessions or do much networking. I did get a chance to talk to fellow Oracle speakers Doug Clarke, Stephen Chin and Frederic Desbiens, which was great. My session, titled Building Java HTML5/WebSocket Applications with JSR 356 was very well attended and I had some excellent Q & A. The talk introduces HTML 5 WebSocket, overviews JSR 356, tours the API and ends with a small WebSocket demo on GlassFish 4. The slide deck for the talk is posted below. Building Java HTML5/WebSocket Applications with JSR 356 from Reza Rahman The demo code is posted on GitHub: https://github.com/m-reza-rahman/hello-websocket. Oracle hosted a reception in the evening which was very well attended. Later in the evening the QCon organizers hosted a very nice speakers' dinner at a local boutique restaurant with excellent atmosphere and good food.

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  • Edit Enterprise Calendar in Project Server 2010

    - by Chris W
    Has anyone been able to successfully edit the Standard calendar in 2010? I'm trying to change the working times as none of our admin accounts seem able to do it. We're running Project Server 2010 RTM on SharePoint 2010 RTM with Project Pro 2010. When I click the Edit Calendar button in PWA it triggers Project client to open up but it just opens up an empty project and I've not access to edit the Standard calendar using any of the published steps. It would be great to hear if someone has managed to do this so I can work out if it's a general glitch in this build or is it just a problem with out setup.

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  • How to make FileZilla open all the required files with one click

    - by Omar Tariq
    Is there any way of configuring FileZilla so that I can open all the files on a server that I use to edit with just one click. For example if the files are like this: /home/abc/def/one.txt /home/abc/def/yet/another/directory/two.txt /home/abc/def/ghi/yet/another/directory/three.txt Then it is very time-consuming to navigate through each directory and open the required files. These are only 3 files but what if we have around 10 to 20 files? Yes, copying the path of the directories is one thing. But something that is built-in so that I can just click a button like open all the required files of this connection and it opens all the files in the editor (as set in FileZilla preferences) then that would be great!

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  • Success Quote: A Hybrid Approach for Success

    - by Lauren Clark
    We recently received this quote from a project that successfully used OUM: “On our project, we applied a combination of the Oracle Unified Method (OUM) and the client's methodology. The project was organized by OUM's phases and a subset of OUM's processes, tasks, and templates. Using a hybrid of the two methods resulted in an implementation approach that was optimized for the client-specific requirements for this project." This hybrid approach is an excellent example of using OUM in the flexible and scalable manner in which it was intended. The project team was able to scale OUM to be fit-for-purpose for their given situation. It's great to see how merging what was needed out of OUM with the client’s methodology resulted in an implementation approach that more closely aligned to the business needs. Successfully scaling OUM is dependent on the needs of the particular project and/or engagement. The key is to use no more than is necessary to satisfy the requirements of the implementation and appropriately address risks. For more information, check out the "Tailoring OUM for Your Project" page, which can be accessed by first clicking on the "OUM should be scaled to fit your implementation" link on the OUM homepage and then drilling into the link on the subsequent page. Have you used OUM in conjunction with a partner or customer methodology? Please share your experiences with us.

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  • Windows 7 Media Center suddenly Jerky..

    - by Kris Erickson
    Media Center in Windows 7 has been running great for me for the past few months since I switched to Windows 7. I can watch HD content on my Xbox, and I have had very few issues with it (occasionally it has locked up on the Xbox, but restarting the Xbox usually fixes that). All of a sudden it has gotten jerky, SD content playing on my computer (not even streaming to the Xbox) is Jerky. VLC and Windows Media Player play the same content perfectly, it is just when it is playing in Windows Media Center (whether streaming or not). Any ideas what could be the cause of this? And yes I have reboot several times...

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  • Expression Studio 4 Community Launch Event

    - by Timmy Kokke
    Event On June 7th Expression Studio 4 will be launched at the Internet Week in New York. One day later, on June 8th, the Dutch Silverlight and Expression User Group SIXIN organizes the Dutch Community Launch in collaboration with Microsoft and Centric at Centric's office in IJsselstein. To celebrate the 4 Expression release we have two interesting speakers. In addition, we give three packages Expression Studio and more great gifts away.   Program The preliminary program for the evening is as follows: 5:45 p.m. - Food, drinks and networking 6:45 p.m. - Reception and Introduction by Koen Zwikstra, co-founder of SIXIN and Silverlight MVP 7:00 p.m. - Phone 7 Building a Windows application using the new features of Expression Blend by Loek van den Ouweland, founder and web designer for Magic Studio 8:00 p.m. - Break 8:30 p.m. - Tour Encoder and Expression Web by Antoni Dol, senior designer at Macaw 9:30 p.m. - Networking while enjoying a drink   Ask your question to one of the speakers If you have a question to one of the speakers, then you can by email ([email protected]) or thru Twitter. Send an email with subject # expression4 or send a tweet @ sixinUG and use it to hashtag # expression4.   Register To register for this event or to get more information you can go to the SIXIN meetings page here.   Special thanks to our sponsors:

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  • Oracle OpenWorld Kicks Off Today Delivering A Full Week of Insight, Education, and Unique Experiences

    - by Jeri Kelley
    San Francisco has been transformed into a sea of red and more than 50,000 attendees from 140 countries will converge in the Bay Area for a week of education and insight into Oracle's strategy and roadmap on today’s leading technology initiatives, including engineered systems, cloud computing, business analytics and big data, and customer experience.  Tonight kicked off with Oracle CEO Larry Ellison discussing how Oracle is taking a fundamentally different approach to delivering technology that is engineered to work together to give customers extreme performance, simplicity, and cost savings.  The jam-packed week continues with: More than 2,500 educational sessions Nearly 3,500 customer and partner speakers from marquee brands sharing how they are using Oracle technology to power their businesses Over 400 Oracle product demonstrations in the DEMOgrounds – make sure to stop by to see the latest demonstrations for our Customer Experience solutions including Oracle Commerce, Oracle RightNow, Oracle WebCenter, Oracle Fusion CRM, Oracle Social Relationship Management, and more. With more educational content than ever before, OpenWorld also expands to include six sub-conferences within the main OpenWorld umbrella including the Customer Experience Summit @ OpenWorld which runs October 3rd-5th.  All of this education and insight comes with some fun as well.  OpenWorld has become an exciting destination with new experiences unveiled each year including the debut of the first annual Oracle OpenWorld Music Festival, featuring some of today’s hottest acts, emerging bands and DJs over five nights playing at locations throughout San Francisco. Our Customer Experience team will be blogging and tweeting all week to keep you up-to-date so be sure to subscribe to our Customer Experience blog and follow us on Twitter and Facebook: @OracleCX @OracleCommerce @OracleCRM Facebook.com/OracleCustomerExperience If you are at OpenWorld, we hope you have a great week and get the knowledge you need to take your Oracle applications to the next level.  And, if you were not able to make it this year, be sure to tune into the sessions that are broadcast live online. 

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  • Playing Age of Empires II multiplayer in VirtualBox Over wi fi network

    - by Gaurav_Java
    I installed Age of Empires II (Expansion) in VirtualBox (hosting Windows XP). It works great in single player mode. Unfortunately, I tried playing multiplayer via WI-FI which I created on my Ubuntu machine and can't seem to join games. But when I connected to my WI-FI router other able to connect to my system and we can play multiplayer mode This is what I've done so far to try to resolve the issue: I noticed that the IP address of my virtual machine was 10.0.x.x, While the local IP on Ubuntu is 192.168.x.x, which I figured was a Problem. So I changed from NAT networking to bridged networking in VirtualBox . I turned off the Windows firewall in the virtual machine and don't have any ports blocked by Ubuntu, so no software firewall should be at fault. However I'm still unable to play multiplayer games, and suspect that some kind of networking issue lies at the heart of the problem. I'm not sure what else I would need to change, however. So essentially I was wondering if anyone else here has managed to play AOE2, or any similar game, inside VirtualBox from Ubuntu, and if so what you needed to do to make it possible. Or if anyone has suggestions on where else to look to figure out the problem, I'd appreciate that as well. Unfortunately AOE2 itself doesn't provide any debugging information to troubleshoot the inability to connect to network games. Here MY IP result both for Ubuntu and Virtualbox XP I want to play game on multiplayer mode in virtualbox on my system(Own Created on Ubuntu ) wi-fi on which other can connect and play hope someone will answer this

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  • Application to store/browse/view photos?

    - by amorfis
    I am looking for application which I can install on Ubuntu server and put my photos there. It can be by web interface, it can be by mounted samba disk. What I require: Ability to add tags to photos. Ability to move photos. I.e. if I set photos directory to /home/photos, but then I want to move all photos to e.g. /home/common/photos - I don't want to lose all the tags. I used to use FSpot and it was great, but it lacked point 2, and I lost everything :(

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  • Demonstrate bad code to client?

    - by jtiger
    I have a new client that has asked me to do a redesign of their website, an ASP.NET Webforms application that was developed by another consultant. It seemed straight-forward (it never is) but I took a look at the code to make sure I knew what I was in for. This application was not written well. At all. It is extremely vulnerable to SQL Injection attacks, business logic is spread throughout the entire application, a lot of duplication, and dead end code that does nothing. On top of that, it keeps throwing exceptions that are being smothered, so it all appears to be running smoothly. My job is to simply update the html and css, but much of the html is being generated in business logic and would be a nightmare for me to sort everything out. My estimates on the redesign were longer than the client was aiming for, and they are asking why so long. How can I explain to my client just how bad this code is? In their mind, the application is running great and the redesign should be a quick one-off. It's my word against the previous consultant, so how can I actually give simple, concrete examples that a non-technical client would understand?

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  • Programming in academic environment vs industry environment [closed]

    - by user200340
    Possible Duplicate: Differences between programming in school vs programming in industry? This is a general discussion about programming in the industry environment. The background story is that my colleague sent me a very interesting article called "10 Things Entrepreneurs Don’t Learn in College." The first point in that post is about the author's experience of programming in the academic environment vs industry environment. After finishing a 4 year Computer Science degree course, I am currently working in the academic environment as a developer, mainly writing Java, J2EE, Javascript code. I know there are differences between academic programming and industry programming, but I was shocked after reading that post. Trying to avoid this happening on me in the future, or the others. Can anyone from industry give some general advice about how to program in industry. For example, What exactly happens when a task is received? What is the flow from the beginning to the end? What are the main differences between the programming in industry and academia? Is it more structured? Are more frameworks used? It would be great if some code examples could be given. Thanks.

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  • Is browser fingerprinting a viable technique for identifying anonymous users?

    - by SMrF
    Is browser fingerprinting a sufficient method for uniquely identifying anonymous users? What if you incorporate biometric data like mouse gestures or typing patterns? The other day I ran into the Panopticlick experiment EFF is running on browser fingerprints. Of course I immediately thought of the privacy repercussions and how it could be used for evil. But on the other hand, this could be used for great good and, at the very least, it's a tempting problem to work on. While researching the topic I found a few companies using browser fingerprinting to attack fraud. And after sending out a few emails I can confirm at least one major dating site is using browser fingerprinting as but one mechanism to detect fake accounts. (Note: They have found it's not unique enough to act as an identity when scaling up to millions of users. But, my programmer brain doesn't want to believe them). Here is one company using browser fingerprints for fraud detection and prevention: http://www.bluecava.com/ Here is a pretty comprehensive list of stuff you can use as unique identifiers in a browser: http://browserspy.dk/

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  • Link to article on website libraries

    - by acidzombie24
    I just started another website and it has taken me 30mins to copy/paste my other website and delete stuff because I don't have a template. Theres lots of features I copied over that I haven't seen in libraries/templates. But I don't really know any libraries/templates. This site is ASP.NET. Some things I have is a string.format that escapes strings for HTML (so <hi> is text instead of a tag). Other features are adding or removing items in the url query, a class to pass in a ASP.NET error and log or convert it into a row in a db (I know about elmah but during development on my last site it wasn't Mono compatible), a mini AJAX library for success/fail/redirect/etc, a class to pass in a ASP.NET error and log or convert it into a row in a db and anything else I would use in every site. I don't like my (library) design because I wasn't expecting to do more then 2-3 websites and I am on my 5th. I don't know proper ASP.NET either so what is an article that explains how to make a great library/template for websites?

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  • Would a Socket Connection Outperform an Intarvaled Database Sweep and Requests?

    - by Jascha
    I'm building a small chat application to add to an existing framework. There will only be 20-50 users MAX at any one time. I was wondering if I could get away with updating a cache file containing (semi) live chat data for whichever users happen to be chatting just by performing timed queries and regular AJAX refreshes for new data as opposed to learning how to open and maintain a socket connection. I'm sure there are existing chat plug-ins out there. But I just had a hell of a time installing one and I could see building the whole damn thing taking just as much time as plugging one in. Am I off to a bad start? Thanks in advance -J (p.s. this is a semi closed network behind a php login so security isn't a great concern)

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  • Demo on Data Guard Protection From Lost-Write Corruption

    - by Rene Kundersma
    Today I received the news a new demo has been made available on OTN for Data Guard protection from lost-write corruption. Since this is a typical MAA solution and a very nice demo I decided to mention this great feature also in this blog even while it's a recommended best practice for some time. When lost writes occur an I/O subsystem acknowledges the completion of the block write even though the write I/O did not occur in the persistent storage. On a subsequent block read on the primary database, the I/O subsystem returns the stale version of the data block, which might be used to update other blocks of the database, thereby corrupting it.  Lost writes can occur after an OS or storage device driver failure, faulty host bus adapters, disk controller failures and volume manager errors. In the demo a data block lost write occurs when an I/O subsystem acknowledges the completion of the block write, while in fact the write did not occur in the persistent storage. When a primary database lost write corruption is detected by a Data Guard physical standby database, Redo Apply (MRP) will stop and the standby will signal an ORA-752 error to explicitly indicate a primary lost write has occurred (preventing corruption from spreading to the standby database). Links: MOS (1302539.1). "Best Practices for Corruption Detection, Prevention, and Automatic Repair - in a Data Guard Configuration" Demo MAA Best Practices Rene Kundersma

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