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• Limit disk I/O one program creates?

  - by Posipiet

  Hardware: one virtualization server. Dual Nehalem, 24GB RAM, 2 TB mirrored HD. Software: Debian, KVM, virt-manager on the server with several virtual machines that use Linux too. 2 TB Disk is a big LVM, each VM gets a logical volume and makes its own partitions in that. Problem: One of the programs that runs on one of the VMs creates huge disk load. This never was an issue, because the program never ran on such a powerful hardware. Now the CPUs are fast, and lots of I/O is the result. We cant do much against that at the moment, because the tool is a black box. On the other hand, the speedy computation is welcome. The program creates about 5 GB of temp files which get overwritten during the next iteration. Question: How can we limit the disk I/O for the process?

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• Why does my Canon printer print document pages at ~25% size?

  - by Erlend Alvestad

  I'm using a Canon PIXMA MP250, and I'm running 12.04 LTS. The printer's been working fine for the couple of months I've been a Linux user. That is, until today. I just printed a 1-page ODT document from LibreOffice. Instead of filling the sheet, the document occupies only a little less than 25% of the paper, in the top left corner, and the text has also shrunk to something like 5pt. I looked at the paper format settings for the document and printer, which were set to "letter". I changed these to "A4", hoping that would solve the issue. There was no change, however. I tried printing a different document in LibreOffice and got the same result. I tried exporting the original document to PDF and printing it through Document Viewer. Same result. I then printed a web page from Google Chrome. No formatting problems there. In all cases the print preview looks fine.

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• Tips about how to spread Object Oriented practices

  - by Augusto

  I work for a medium company that has around 250 developers. Unfortunately, lots of them are stuck in a procedural way of thinking and some teams constantly deliver big Transactional Script applications, when in fact the application contains rich logic. They also fail to manage the design dependencies, and end up with services which depend on another large number of services (a clean example of Big Ball of Mud). My question is: Can you suggest how to spread this type of knowledge? I know that the surface of the problem is that these applications have a poor architecture and design. Another issue is that there are some developers who are against writing any kind of test. A few things I'm doing to change this (but I'm either failing or the change is too small are) Running presentations about design principles (SOLID, clean code, etc). Workshops about TDD and BDD. Coaching teams (this includes using sonar, findbugs, jdepend and other tools). IDE & Refactoring talks. A few things I'm thinking to do in the future (but I'm concern that they might not be good) Form a team of OO evangelists, who disseminate an OO way of thinking in differet teams (these people would need to change teams every few months). Running design review sessions, to criticise the design and suggest improvements (even if the improvements are not done because of time constraints, I think this might be useful) . Something I found with the teams I coach, is that as soon as I leave them, they revert back to the old practices. I know I don't spend a lot of time with them, usually just one month. So whatever I'm doing, it doesn't stick. I'm sorry this question is spattered with frustration, but the alterative to write this was to hit my head on the wall until I pass out.

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• What can be done to decrease the number of live issues with applications?

  - by User Smith

  First off I have seen this post which is slightly similar to my question. : What can you do to decrease the number of deployment bugs of a live website? Let me layout the situation for you. The team of programmers that I belong to have metrics associated with our code. Over the last several months our errors in our live system have increased by a large amount. We require that our updates to applications be tested by at least one other programmer prior to going live. I personally am completely against this as I think that applications should be tested by end users as end users are much better testers than programmers, I am not against programmers testing, obviously programmers need to test code, but they are most of the times too close to the code. The reason I specify that I think end users should test in our scenario is due to the fact that we don't have business analysts, we just have programmers. I come from a background where BAs took care of all the testing once programmers checked off it was ready to go live. We do have a staging environment in place that is a clone of the live environment that we use to ensure that we don't have issues between development and live environments this does catch some bugs. We don't do end user testing really at all, I should say we don't really have anyone testing our code except programmers, which I think gets us into this mess (Ideally, we would have BAs or QA or professional testers test). We don't have a QA team or anything of that nature. We don't have test cases for our projects that are fully laid out. Ok, I am just a peon programmer at the bottom of the rung, but I am probably more tired of these issues than the managers complaining about them. So, I don't have the ability to tell them you are doing it all wrong.....I have tried gentle pushes in the correct direction. Any advice or suggestions on how to alleviate this issue ?

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• Issues with DHCP over multiple subnets

  - by Dan Monego

  I have a cisco router configured to handle multiple subnets (10.1.10.n, 10.2.10.n, etc), and an ubuntu system serving DHCP to the computers served by the router. After a restart of the DHCP, the systems on the 10.1 subnet are fine, but neither the server or the computers configured on the other subnets can see the router at 10.2.10.1 (or 10.3.10.1, or 10.4.10.1). The router can see itself at 10.2.10.1, however. The change that caused this was restarting the server, so I'm approaching it assuming the configuration error is on that end. Is that the likely issue or is there a different problem that would prevent the machines on the 10.2.10 subnet from resolving DHCP?

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• Getting Unity 3D working on legacy Nvidia card

  - by user69545

  I installed the latest nVIDIA drivers for my FX5500 card. I understand that the X server version does not officially support this driver or card but was wondering what I can do to get compiz running. I have researched for hours on this issue but cannot come up with an answer for myself. I might be doing all this for nothing but I wanted to at least try. Here is the output of my test: mike@mike-linux-box:~$ /usr/lib/nux/unity_support_test -p OpenGL vendor string: NVIDIA Corporation OpenGL renderer string: GeForce FX 5500/AGP/SSE2 OpenGL version string: 2.1.2 NVIDIA 173.14.35 Not software rendered: yes Not blacklisted: no GLX fbconfig: yes GLX texture from pixmap: yes GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: no So I was wondering what is the "Not Blacklisted" test? Is this the Nouveau Blacklisting? nVIDIA driver did that automatically. Does this need to be removed? Any help would be appreciated. I just want to run compiz effects. Thanks.

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• foobar.com working, but www.foobar.com not working?

  - by dpmattingly

  I am setting up a web site for a client. She is using GoDaddy for domain registration, and a hosting company I have never used before. After setting up the nameservers on GoDaddy's side, the address foobar.com (for example) is correctly directing to the new site. However, the address www.foobar.com is redirecting to a 404 page on the hosting company's side. I've been dealing with customer service on the hosting side, and they have told me various things including wait for DNS propagation (which has obviously happened since the 404 page is on their side), and to make sure that the nameservers on GoDaddy's side were entered in lower case instead of upper case (which I know doesn't matter since nameservers are case insensitive). I think I'm getting the runaround from the hosting company, but the client had signed up with them before I came to the project, so if possible I'd like to resolve this issue with them before we start treating it as a loss. Does anybody know what could cause foobar.com to resolve correctly but www.foobar.com to not resolve? How would I best be able to suggest a fix to this through the technical support channels of a hosting company?

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• Cannot move Google Chrome tabs to different monitor in ubuntu

  - by Moses

  When I use Chrome in Windows, I can grab a tab and drag it over to my second monitor and it will automatically maximize. In ubuntu, when I try to do the same, the tab will snap back to my primary monitor and maximize there. There is a related bug report for Chromium that is labeled "fixed" here, but when I try using Chromium instead of Chrome, I get the same behavior (not what I called fixed). So far the only other thing I've tried is changing themes, resetting Chrome's settings to default and tested Chromium as I pointed out above. I've also tried installing Chrome from a live Linux disc, and the behavior is still the same. The issue does not occur with Firefox, but I need to use Chrome for work-related reasons, so simply switching isn't really an option personally (though it is a viable workaround). I'm using Chrome 30 and ubuntu 13.04. Does anyone have any solutions?

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• PHP on IIS7 not showing pages

  - by Jeff

  I have a PHP website on a Windows 7 machine I'm working with and it cannot be viewed by any browser - IE, Chrome, Firefox. When navigating to the root of the website (default index.php) the browser reports it cannot find the address. Not a 404 error from the webserver, just as if it cannot resolve the name. Other websites in the same default web application that are also PHP work perfectly. I've aligned all folder permissions and everything else but this has got me stumped. I even went as far to create a new folder and throw in a test phpinfo() page and it worked. Copied this website's content to the new folder and it cannot find the index.php page. I checked all setting I know and can't seem to find what I'm missing. Anyone else encounter this issue? Remember the fix for it?

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• VPN within a VM to allow for internet access on the host

  - by David Durrant

  I have a network connection (created under Networks and Sharing) that I use to connect to a customer's site. But when I use this to connect to the site, I loose all access to the public internet, and can only access customer specific items. I want to circumvent this issue by creating a VM and then utilizing the VM to connect to the network location and interact within the customer's domain, while leaving my host machine open to the internet. I'm not extremely familiar with networking, but I have a few basic skills. Please let me know if this is possible and what the correct procedures are. I already have a VM created with VirtualBox, and both the host and guest are running Windows 7 x64. I have created duplicate VPNs already, but can only connect successfully on the host machine.

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• Stakeholder Management in OUM

  - by user719921

  Where is Stakeholder Management in OUM?  Stakeholder Management typically falls into the purview of the Project Manager, which means much of the associated guidance is found in the OUM Manage Focus Area (a.k.a. Manage).  There is no process in Manage named Stakeholder Management, but this “touch point” can be found in a variety of other processes including Bid Transition (BT), Communication Management (CMM) and Organizational Change Management (OCHM). •         Stakeholder management starts in the Bid Transition process with Stakeholder Analysis •         This Stakeholder Analysis is used to build the Project Team Communication Plan in the Communication Management process. •         Stakeholder management should be executed during the Execution and Control phase.  For example, as issues are resolved, the project manager should take the action item to follow up with the affected stakeholders to ensure they are aware that the issue has been resolved. •       The broader topic of Stakeholder management is also addressed very thoroughly in the Organizational Change Management process in the Implement Focus Area, which is a touch point to the Organizational Change Management process in Manage. Check it out and let me know your thoughts!

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• Why is IIS 7.5 flushing file cache very often?

  - by Steffen

  We're running a Win 2008 R2 server with IIS 7.5 for serving image files. It's only used for static content, and file caching has been set up to cache files for 10 minutes. However the IIS frequently completely flushes the cache (seen by using Perfmon) It's not application pool recycling, it's not because the TTL has expired, so now I'm at a loss :-( I've included a screenshot of the perfmon graph where you can clearly see the issue. Is there anywhere I can see WHY it's doing these flushes ? (Note: I'm aware I could maybe detect it by attaching a debugger to the process, but that's not an option because it's a production server, and it cannot handle the slowdown a debugger would cause)

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• Can non-IT people handle a wiki?

  - by Andrew Heath

  (I'm hoping that some of you will have encountered this issue before and can offer some insights...) My company is looking to improve their market research data management. Current data management style: "Hey Jimbo, where's that picture of our WhatZit 2.0? "yeah I remember that email about that company from that guy, gimme a few minutes to search my Outlook" "who has the newest copy of the Important Competitor's product catalogue? Mine is from '09." ... "Colleen does, and she's on maternity leave. You'll have to call her to get her workstation password..." Desired data management style: data organized neatly by topic (legal, economic, industrial, competitor) for each topic, multiple media types stored together (company product images, press releases, contact info) but still neatly sorted by type data editing histories communal access (no data silos) I was thinking about setting up a department wiki for all users to access. It seems to satisfy the four criteria above, but I'm a little concerned about how user-friendly (read: decipherable to non-technical people) it is for the more advanced features like image galleries, article formatting, and the like. Has anyone here setup a wiki for non-IT people and had it not catch on fire//become a ghost town//look like Geocities? Bonus question: can you see any obvious drawbacks to my choice of MediaWiki (or any other wiki) for solving this problem? Thank you.

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• Wiki on a pendrive - should work with any OS

  - by Florian Pilz

  Hello, I want to have an "extended memory" and want to accomplish that with an wiki on an pendrive. I already decided to use PmWiki, but if another wiki solves my problem that would be fine. The issue is: If I install an Apache on an pendrive, it depends on the running operating system. Because I'm using Windows & Linux (and will use Mac in the future) it is crucial for me to be platform independent. I read this article. DokuWiki is for Windows only and MoinMoin needs Python installed (which would be possible on my PCs, but not on public ones). Every help for my "extended memory" is appreciated. PS: As a last resort I could host a wiki on my webpage, which would be accessible everywhere. But I just see a challenge in trying it on a pendrive.

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• Folder Redirection won't load on Windows 7 Machine in Windows 2008 R2 Network

  - by leeand00

  Okay so redirected profiles don't load exactly, but the computer is joined to the network and it won't display any of the users files on their desktop that are in their redirected profile. I know this because we have a Terminal Server and when the user logs in there, her files appear. I checked the users' profile in Active Directory Users and Computers and compared it with a working users profile. When that didn't turn up any differences, I looked at her computer and found that on the Dial-in tab the Network Access Permission wasn't set to Control access through NPS Network Policy like it was on the other machines on the network; so I selected it, ran gpupdate /force on her machine and rebooted. This did not fix the issue. Is there anything else that could be preventing the redirected files on the users desktop from showing up when the user logs in?

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• telnet to 3389 connects, RDP remote desktop app bails ?

  - by scott_lotus

  I can TELENT 192.168.10.10 3389 and get a connection. But RDP client to 192.168.10.10 immedietly bails (i.e less then 1 sec) "connect" button greys briefly, RDP app remains on screen. Have tried these from many nodes on the subnet to 192.168.10.10 with same result. On 192.168.10.10 Allow Remote Desktop is enabled. On 192.168.10.10 windows firemall is off. Im connecting from the same subnet i.e no firewall hardware / routers in the way. AV software is installed but other nodes on same subnet allow RDP connection using exact same AV settings (network group profile) Checked 192.168.10.10 for any additonal AV software or local firewall products. Im sure non exist. Checked regedit to ensure 3389 was the port set for listening. Seems to be an XP problem (sp3) ( 2 nodes on the my LAN have this issue) and many work fine. Thanks for any help Scott

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• Generated Methods with Type Hints

  - by Ondrej Brejla

  Hi all! Today we would like to introduce you just another feature from upcoming NetBeans 7.3. It's about generating setters, constructors and type hints of their parameters. For years, you can use Insert Code action to generate setters, getters, constructors and such. Nothing new. But from NetBeans 7.3 you can generate Fluent Setters! What does it mean? Simply that $this is returned from a generated setter. This is how it looks like: But that's not everything :) As you know, before a method is generated, you have to choose a field, which will be associated with that method (in case of constructors, you choose fileds which should be initialized by that constructor). And from NetBeans 7.3, type hints are generated automatically for these parameters! But only if a proper PHPDoc is used in a corresponding field declaration, of course. Here is how it looks like. And that's all for today and as usual, please test it and if you find something strange, don't hesitate to file a new issue (product php, component Editor). Thanks a lot!

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• update ocz vertex le capacity via firmware update

  - by Ben Voigt

  I have an OCZ Vertex LE 100GB drive. It's actually 128GiB of NAND flash, with a whopping 28%+ reserved for write combining. Most 128GiB drives are actually ~ 115GB usable (and marketed as 120GB or 128GB). There were rumors that the reserved fraction could be decreased on OCZ 100GB drives. Can anyone provide a link to firmware that does that, or an official statement that no such firmware exists? (NB: I recently installed the 1.24 firmware from the OCZ site, it didn't affect the capacity. Possibly because the rumors say the capacity change is destructive to existing content.) Of possible interest: flashing firmware was more of a pain than it should have been -- the tool didn't detect the disk until I booted an older Windows install off a secondary hard disk, I suspect the Intel SATA driver is the issue and tool only works with the msachi.sys driver.

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• Intsalling Linux on PowerEdge R410 via USB

  - by Bill Johnson

  I’m hoping someone can help me with the following issue. I have a Dell PowerEdge R410 and basically the Optical Drive has failed when I have been given the server. I have installed 2 SATA drives and want to install Ubuntu 11.04; however, each time I have tried i.e. using bootable .iso on USB it failed. I assume it's failing as with a lot of releases they all look at the CD drive. Ubunutu has failed on installation with the error message unable to mount CD. I have tried installing Microsoft Hyper-v and that also fails as during installation it asks for CD/DVD drivers. Tried embedding ISO's from various distro's (Linux and Windows) with drivers and that hasn't worked out either. Does anyone have any idea on how I can get Ubuntu on this server? Should I look towards an old distro perhaps?

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• Allow from referer for HTTP-basic protected SSL apache site

  - by user64204

  I have an apache site protected by HTTP basic authentication. The authentication is working fine. Now I would like to bypass authentication for users that are coming from a particular website by relying on the HTTP Referer header. Here is the configuration: SetEnvIf Referer "^http://.*.example\.org" coming_from_example_org <Directory /var/www/> Options Indexes FollowSymLinks MultiViews AllowOverride None Deny from all Allow from env=coming_from_example_org AuthName "login required" AuthUserFile /opt/http_basic_usernames_and_passwords AuthType Basic Require valid-user Satisfy Any </Directory> This is working fine for HTTP, but failing for HTTPS. My understanding is that in order to inspect the HTTP headers, the SSL handshake must be completed, but apache wants to inspect the <Directory> directives before doing the SSL handshake, even if I place them at the bottom of the configuration file. Q: How could I workaround this issue? PS: I'm not obsessed with the HTTP referer header, I could use other options that would allow users from a known website to bypass authantication.

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• How do I mount my Android phone?

  - by Amanda

  I'm puzzled because my phone used to just appear when I plugged it in. It doesn't anymore and The development options are definitely set to allow USB debugging. The phone is charging via USB but doesn't appear in lsusb [0 amanda@luna android-sdk-linux_86]$ lsusb Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 004: ID 17ef:4807 Lenovo UVC Camera Bus 003 Device 012: ID 413c:1003 Dell Computer Corp. Keyboard Hub Bus 003 Device 003: ID 08ff:2810 AuthenTec, Inc. AES2810 Bus 003 Device 013: ID 413c:2010 Dell Computer Corp. Keyboard Bus 003 Device 014: ID 046d:c001 Logitech, Inc. N48/M-BB48 [FirstMouse Plus] adb devices -l shows nothing. In my Wireless and Network settings I changed the USB connection settings to "Mass storage" -- they were set to "Ask on connection" though I definitely wasn't getting asked. I don't get any Click here to connect via USB alert either. I'm not even sure whether the issue is my phone or my computer. It seems odd that it isn't even appearing in lsusb Not for nothing, the thumb drive on my keyring also does not appear in lsusb -- I've tried both in a bunch of different ports. I kind of assume the thumb drive is just borked, but it could be my OS.

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• iMac invalid memory access and then crash?

  - by Sam McAfee

  My iMac G5 from a few years ago (the square white one) dies now, with a message about an invalid memory access. It goes straight to an Open Firmware prompt and doesn't even load the Mac OS at all. Am I correct in guessing that the memory is probably the issue, and that if I replace it, we may be able to boot again as normal? That's my gut feeling anyway, so I ordered some more memory and plan to swap it today. Any thoughts? Ideas?

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• Exchange Server 2010 ActiveSync SSL Certificate Problem

  - by Cell-o

  Hi All, We have a problem related Exchange Server 2010 Activesync.My problem is;When I connecting to activesync from outside, I am receiving the following error. ExRCA is testing Exchange ActiveSync. The Exchange ActiveSync test failed. Test Steps Attempting to resolve the host name mail.xxxxx.com in DNS. The host name resolved successfully. Additional Details IP addresses returned: xx.0.x3.4 Testing TCP port 443 on host mail.x.com to ensure it's listening and open. The port was opened successfully. Testing the SSL certificate to make sure it's valid. The SSL certificate failed one or more certificate validation checks. Test Steps Validating the certificate name. Certificate name validation failed. Tell me more about this issue and how to resolve it Additional Details Host name mail.x.com doesn't match any name found on the server certificate CN=xxxxxx. Thanks in advance all your help.

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• Solution for storing sata drives outside of case

  - by Jeffrey Kevin Pry

  I have a system that has 8 sata disks in a software raid 5 array using mdadm. My issue is that I want to move the drives from inside of the computer case in order to cool more efficiently. I have looked all over the web and only seem to find enclosures that hide the drives connectors behind an estata port or some other internal raid controller. Basically what I want is an enclosure or equivalent that I can run independent sata cables to and either power as well, or have it have its own power supply. I have the sata ports on the motherboard available and don't want to limit io by using one port with a multiplier or the like. One final caveat, I am a college student on a budget and don't have a fortune to spend on such an enclosure. Thanks in advance for your help and advice.

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• Why CFOs Should Care About Big Data

  - by jmorourke

  The topic of “big data” clearly has reached a tipping point in 2012.  With plenty of coverage over the past few years in the IT press, we are now starting to see the topic of “big data” covered in mainstream business press, including a cover story in the October 2012 issue of the Harvard Business Review.  To help customers understand the challenges of managing “big data” as well as the opportunities that can be created by leveraging “big data”, Oracle has recently run and published the results of a customer survey, as well as white papers and articles on this topic.  Most recently, we commissioned a white paper titled “Mastering Big Data: CFO Strategies to Transform Insight into Opportunity”. The premise here is that “big data” is not just a topic that CIOs should pay attention to, but one that CFOs should understand and take advantage of as well.  Clearly, whoever masters the art and science of big data will be positioned for competitive advantage in their industries or markets.  That’s why smart CFOs are taking control of big data and business analytics projects, not just to uncover new ways to drive growth in a slowing global economy, but also to be a catalyst for change in the enterprise.  With an increasing number of CFOs now responsible for overseeing IT investments and providing strategic insight to the board, CFOs will be increasingly called upon to take a leadership role in assessing the value of “big data” initiatives, building on their traditional skills in reporting and helping managers analyze data to support decision making. Here’s a link to the white paper referenced above, which is posted on the Oracle C-Central/CFO web site, as well as some other resources that can help CFOs master the topic of “big data”: White Paper “Mastering Big Data:  CFO Strategies to Transform Insight into Opportunity CFO Market Watch article:  “Does Big Data Affect the CFO?” Oracle Survey Report:  “From Overload to Impact – An Industry Scorecard on Big Data Industry Challenges” Upcoming Big Data Webcast with Andrew McAfee Here’s a general link to Oracle C-Central/CFO in case you want to start there: www.oracle.com/c-central/cfo Feel free to contact me if you have any questions or need additional information:  [email protected]

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