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• Do i need a dedicated server for load balancing?

  - by Ben

  I'm completely new to the concept of load balancing so i hope this question isn't a "stupid question" because i've been searching around and im having a hard time understanding this. So to my understanding, in order to load balance, i need a separate machine with an ip address i can direct all traffic to. I initially thought i needed to rent 3 dedicated servers, one for load balancing and the other two as backend servers. Would a dedicated server be too much for a load balancer or do hosting companies have special types of computers for that process? Then i read somewhere else that i can install a load balance software in both of the two servers and configure it in a way that doesn't require me to rent another machine/dedicated server for load balancing. So im a bit confuse on how to actually implement a load balancer and whether or not i need a dedicated server for the sole purpose of acting as a load balancing machine. Also, i was recommended to use HAproxy so i'll be heading that direction for load balancing.

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• Top 10 Architect Community Articles for May 2014

  - by OTN ArchBeat

  One of the things I get to do as an OTN community manager is work with members of the architect community who want to spend extra time pounding the keyboard and risking carpal tunnel syndrome to publish articles on OTN. These articles typically cover—but are not limited to—middleware technologies (the other OTN community managers cover other technologies and product areas). Naturally, we track the popularity of these articles and use that information to help guide editorial decisions about the many article submissions we get. The list below represents the Top 10 most popular architect community articles for May 2014. (This list reflects only articles published between June 1, 2013 and May 31, 2014.) Cookbook: Installing and Configuring Oracle BI Applications 11.1.1.7.1 [August 2013] by Mark Rittman and Kevin McGinley Enterprise Service Bus [July 2013] by Jürgen Kress, Berthold Maier, Hajo Normann, Danilo Schmeidel, Guido Schmutz, Bernd Trops, Clemens Utschig-Utschig, Torsten Winterberg Back Up a Thousand Databases Using Enterprise Manager Cloud Control 12c [January 2014] by Porus Homi Havewala Set Up and Manage Oracle Data Guard using Oracle Enterprise Manager Cloud Control 12c [August 2013] by Porus Homi Havewala SOA and Cloud Computing [April 2014] by Jürgen Kress, Berthold Maier, Hajo Normann, Danilo Schmeidel, Guido Schmutz, Bernd Trops, Clemens Utschig-Utschig, Torsten Winterberg Building a Responsive WebCenter Portal Application [April 2014] by JayJay Zheng Using WebLogic 12c with Netbeans IDE by Markus Eisele Making the Move from Oracle Warehouse Builder to Oracle Data Integrator 12c by Stewart Bryson A Real-World Guide to Invoking OSB and EDN using C++ and Web Services [January 2014] by Sebastian Lik-Keung Ma Why Would Anyone Want to be an Architect? [May 2014] by Bob Rhubart If this list leaves you feeling inspired to write a technical article for OTN, or if you have questions about the process, drop me line in the comments section, below. I'll get back to you ASAP.

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• Inexpensive Remote Assistance software?

  - by Jess

  Any recommendations for Remote Assistance software that does not require firewall modification for clients? To assist client with software problems and perform training, we currently use a tool called Remote Helpdesk to connect to their computers and guide them through the process. This tool was pretty cheap (~$400 onetime for 3 support staff), and worked great - the client's PC actually initiates the connection to us, so there's never any firewall issues (vs. Remote Desktop, VNC software, or many other similar tools). Unfortunately, the product doesn't work well with 64-bit O/S's and Vista in general (slows down by a factor of 10 or so). I am looking for alternatives that provide the same reverse connection capabilities to avoid firewall issues. The only solution I've found is WebEx's Remote Support, which is WAY too expensive ($449/month for us). Thanks for all the assistance!

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• Creating an OS X Mountain Lion 10.8 OpenDIrectory database with a specific domain in mind

  - by whardier

  Mountain Lion Server has been one of the most infuriating things ever recently. Above and beyond tons of crashing I've been completely unable to do the following in a way that makes sense to both me and Apple. Name your server srv01.myoffice.domain.com Create an OpenDirectory database as a Master from scratch as dc=domain,dc=com I can rename my server temporarily (taking down vital services in the process due to the automagicliciousness) and create a new profile, however when I switch back to the original domain name the default search base for server related authentication magic is now dc=srv01,dc=myoffice,dc=domain,dc=com. I've tried everything I can think of including using slapconfig backupdb/restoredb and slaving the server off of another then promoting it. This seems rather silly and Apple shows no response to many requests to resolve this. Does anybody out there have the magic to have OpenDirectory work as it should.. being able to give it any domain you want and then having all vital services operate correctly.

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• Event Tracing for Windows GUI

  - by Ian Boyd

  i want to view tracing events from the Event Tracing for Windows system. As far as i can tell the only client program that exists for connecting to providers is a command line tool that comes with the Microsoft Windows Device Driver Development Kit (DDK), e.g.: tracelog -start "NT Kernel Logger" -f krnl.etl -dpcisr -nodisk -nonet -b 1024 -min 4 -max 16 -ft 10 –UsePerfCounter ... tracelog –stop It then requires a separate command line tool to convert the generated log file into something usable, e.g.: trcerpt krnl.etl -report isrdpc.xml Has nobody come up with a Windows program (ala Performance Monitor, Process Monitor, Event Viewer) that lets me start tracing by pushing a "Go" button, let me see events, and i can stop it with a "Stop" button? Is there GUI for Event Tracing for Windows?

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• Problems with SCP stalling during file copy over VPN

  - by MattC

  I have a series of files I need to copy via SCP over a VPN to a remote linux server each night. The files are not large, we're talking about tens of megabytes here, but the file copy almost always stalls after a few seconds. Running the SCP command with -vvv, I see the following over and over throughout the attempted copy process: debug2: channel 0: rcvd adjust 131072 debug2: channel 0: rcvd adjust 131072 debug2: channel 0: rcvd adjust 131072 Any thoughts? I see this question being asked in various places out there, but never any answers. Any help would be appreciated.

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• Component Development within SOA

  How do the concepts of component development work within SOA? Let’s first break this question down by defining what component development is. Component development is the process of implementing specific functionality in the form of small units of complied code that can be reused across multiple applications or product families. Typically, components are integrated with other components forming composite components. In general, most interaction between components is done through interfaces to promote loose coupling. The concept of loose coupling refers to the interconnections of components in a system so that their component dependences based on contracts defined by interfaces. A real life example of this can be experienced while using Legos to build a structure. If we consider each Lego block as a component, then when two more Legos are connected they form a composite component due to the fact that the structure is made up of multiple components.   It is important to note that composite components can be made from standard components and other composite components. Eventually as various components and composite components become interconnected a structure begins to form in the shape of an application or in the case of Legos in the form of Lego structure. Software components can loosely be defined as small units of related implemented functionality that can communicate with other components or may have dependencies on other components. Based on the definitions provide above, it is my personal opinion that SOA works well with the concepts of component development. The SOA architectural style focuses on creating loosely coupled services. Each service much like a component offers related functionality that can be accessed by various requesting clients.  In addition services can be derived just like components in that services can be built on other services to form composite services. In summary, the concepts of component development can work within SOA based on the example above.

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• Bingbot seems to be adding "ForceRecrawl: 0" to URLs when crawling my sites

  - by Louis Somers

  I'm seeing this in the iis-logs of two websites that I maintain: GET /an/existing/page/on/my/site+ForceRecrawl:+0 - 80 - 207.46.195.105 HTTP/1.1 Mozilla/5.0+(compatible;+bingbot/2.0;++http://www.bing.com/bingbot.htm) I get about one or two of these per day from these IP addresses: 207.46.195.105, 65.52.110.190.. an more, all belonging to msnbot-ip.search.msn.com Probably Microsoft has a bug in their crawler? Any way, doing a search on "ForceRecrawl: 0" in major search engines comes up with a bunch of random sites. Doing the search on StackOverflow or here gave no results (to my amazement). Am I the only one seeing this? I first noticed these on the 9th of this month, and I'm seeing them pass almost daily since... Another thing that I think is crazy, is that the URL http://www.bing.com/bingbot.htm redirects to mail.live.com (hotmail). Currently I'm returning 404's but I'm considering to catch these, strip the trailing " ForceRecrawl: 0" and process as if it were a legitimate url. Could anyone shed some light on this? Could it have to do with some configuration or so in Bing's Webmaster Tools?

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• Using Microsoft benefits to kickstart your own development

  - by douglasscott

  Working for a big company I enjoy all the Microsoft tools I can consume. I also have the infrastructure to support my development and team communication.I recently helped form a small consulting team that requires the same type of resources. That is when the realization of the true cost of Microsoft's professional development tools really hit me.Okay, I'll just bite the bullet and get what I'm used to working with to do high quality development projects.  After just a few minutes of looking at street prices and doing some quick math I began to have a realization...doing this right isn't cheap!Luckily there is help.  If you are willing to get your ducks in a row and do a little documentation  Microsoft will give you some developer manna. I went to the Bizspark site and completed the application which describes your company profile and services offer.  The approval process took about a week.  Voila, A Visual Studio Ultimate with MSDN Subscription!As a start-up Office 365 can be a great solution for all your team communications.  I also enrolled in the Microsoft Cloud Essentials program as part of a business track.  Once you meet the Cloud Essentials requirements you will receive 250 Office 365 licenses! This includes Office and hosted Exchange, Lync, and SharePoint.Take advantage of what Microsoft has to offer for your start-up.  It just may surprise you and save you a lot of your start-up budget.

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• SQL SERVER – New SQL Server 2012 Functions – Webinar by Rick Morelan

  - by Pinal Dave

  My friend Rick Morelan is a wonderful speaker and listening to him is very delightful. Rick is one of the speakers who can articulate a very complex subject in very simple words. Rick has attained over 30 Microsoft certifications in applications, networking, databases and .NET development, including MCDBA, MCTS, MCITP, MCAD, MOE, MCSE and MCSE+. Here is the chance for every one who has not listened Rick Morelan before as he is presenting an online webinar on New SQL Server 2012 Functions. Whether or not you’re a database developer or administrator, you love the power of SQL functions. The functions in SQL Server give you the power to accelerate your applications and database performance. Each version of SQL Server adds new functionality, so come and see Rick Morelan explain what’s new in SQL Server 2012! This webinar will focus on the new string, time and logical functions added to SQL Server 2012. Register for the webinar now to learn: SQL Server 2012 function basics String, time and logical function details Tools to accelerate the SQL coding process Tuesday June 11, 2013  7:00 AM PDT / 10:00 AM EDT 11:00 AM PDT / 2:00 PM EDT Secret Hint: Here is something I would like to tell everyone that there is a quiz coming up on SQLAuthority.com and those who will attend the webinar will find it very easy to resolve it. Register for webinar Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Joes 2 Pros, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• Problem with regsvr32 on Windows Server 2010

  - by Chris Anton

  Hi all! I am attempting to register a basic COM dll on a Windows Server 2008 standard box. I run regsvr32 capicom.dll and it reports DllRegisterServer in capicom.dll succeeded. This is the same process we've used for years on Windows Server 2003. Sadly, when I attempt to create the object via a very very basic Microsoft vbscript example Set oStore = CreateObject("CAPICOM.Store") it throws a "ActiveX component can't create object" error. Thinking maybe it was a problem with this dll, I tried a few other DLLs we use with the same result. I tried using the regsvr32 in system, system32, and syswow64 all with the same result. I don't know too much about the differences between each of those, but figured it was worth a shot. The dll is being stored on the d:\ and seems to have correct permissions (though that'd be a different error altogether). Thanks to any help or thoughts you might have!

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• scheme vs common lisp: war stories

  - by SuperElectric

  There are no shortage of vague "Scheme vs Common Lisp" questions on StackOverflow, so I want to make this one more focused. The question is for people who have coded in both languages: While coding in Scheme, what specific elements of your Common Lisp coding experience did you miss most? Or, inversely, while coding in Common Lisp, what did you miss from coding in Scheme? I don't necessarily mean just language features. The following are all valid things to miss, as far as the question is concerned: Specific libraries. Specific features of development environments like SLIME, DrRacket, etc. Features of particular implementations, like Gambit's ability to write blocks of C code directly into your Scheme source. And of course, language features. Examples of the sort of answers I'm hoping for: "I was trying to implement X in Common Lisp, and if I had Scheme's first-class continuations, I totally would've just done Y, but instead I had to do Z, which was more of a pain." "Scripting the build process in Scheme project, got increasingly painful as my source tree grew and I linked in more and more C libraries. For my next project, I moved back to Common Lisp." "I have a large existing C++ codebase, and for me, being able to embed C++ calls directly in my Gambit Scheme code was totally worth any shortcomings that Scheme may have vs Common Lisp, even including lack of SWIG support." So, I'm hoping for war stories, rather than general sentiments like "Scheme is a simpler language" etc.

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• Scheme vs Common Lisp: war stories

  - by SuperElectric

  There are no shortage of vague "Scheme vs Common Lisp" questions on both StackOverflow and on this site, so I want to make this one more focused. The question is for people who have coded in both languages: While coding in Scheme, what specific elements of your Common Lisp coding experience did you miss most? Or, inversely, while coding in Common Lisp, what did you miss from coding in Scheme? I don't necessarily mean just language features. The following are all valid things to miss, as far as the question is concerned: Specific libraries. Specific features of development environments like SLIME, DrRacket, etc. Features of particular implementations, like Gambit's ability to write blocks of C code directly into your Scheme source. And of course, language features. Examples of the sort of answers I'm hoping for: "I was trying to implement X in Common Lisp, and if I had Scheme's first-class continuations, I totally would've just done Y, but instead I had to do Z, which was more of a pain." "Scripting the build process in my Scheme project got increasingly painful as my source tree grew and I linked in more and more C libraries. For my next project, I moved back to Common Lisp." "I have a large existing C++ codebase, and for me, being able to embed C++ calls directly in my Gambit Scheme code was totally worth any shortcomings that Scheme may have vs Common Lisp, even including lack of SWIG support." So, I'm hoping for war stories, rather than general sentiments like "Scheme is a simpler language" etc.

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• How to Upgrade Your Verizon Mi-Fi Firmware to Fix Connection Problems

  - by The Geek

  If you’ve got a Verizon Mi-Fi and you’re having problems with it disconnecting all the time, there’s a quick and easy fix—you’ll just need to upgrade the firmware to the latest version. Here’s how to do it, and fix your connection issues. If you aren’t experiencing any issues at all, you might not want to upgrade, but in our experience, the Mi-Fi will sometimes disconnect in certain areas—and this is the solution. Once you’ve run the update, the problems are mostly gone. Note: there are a number of difference Mi-Fi type of devices from Verizon, and the same process should work for all of them. Latest Features How-To Geek ETC The How-To Geek Holiday Gift Guide (Geeky Stuff We Like) LCD? LED? Plasma? The How-To Geek Guide to HDTV Technology The How-To Geek Guide to Learning Photoshop, Part 8: Filters Improve Digital Photography by Calibrating Your Monitor Our Favorite Tech: What We’re Thankful For at How-To Geek The How-To Geek Guide to Learning Photoshop, Part 7: Design and Typography Happy Snow Bears Theme for Chrome and Iron [Holiday] Download Full Command and Conquer: Tiberian Sun Game for Free Scorched Cometary Planet Wallpaper Quick Fix: Add the RSS Button Back to the Firefox Awesome Bar Dropbox Desktop Client 1.0.0 RC for Windows, Linux, and Mac Released Hang in There Scrat! – Ice Age Wallpaper

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• Miami 311: Built on Windows Azure

  - by Josh Holmes

  This is a cool use of Azure. The city of Miami tool their “311” data around potholes, trash pickup issues, recycling issues, broken sidewalks and the like and put that data in Azure. The next step is that they leveraged Bing Maps and Silverlight to visualize those issues spread on a map of the city. The solution takes advantage of virtually unlimited storage and processing power, provides the ability to quickly address service requests and implement updates even during peak times such as hurricane season. If things change, the City can bring the solution on site or move to a physical facility, all based on  need and cost-effectiveness. As a result, residents logging on to Miami 311 can see on average 4,500 issues in progress - not represented as a ‘list', but located on a map in relation to other projects in their neighborhood .  A simple click on the map allows them to easily drill down to more and more specific details if they want. In short, they have turned what used to be represented by a meaningless list of data into useful information, and created  actionable and consumable knowledge that is relevant to the citizens of Miami. For Miami, their ‘service call to the city' becomes an interactive process they can follow - and the City has a new tool to manage and deliver outcomes. … When the city made the move to the web, they chose tools they knew and software they trust. The Microsoft Windows Azure cloud platform made it easy to do, and they used both Bing mapping and Silverlight to build a user friendly front end. According to Port25 (Miami 311: Built on Windows Azure - Port 25: The Open Source Community at Microsoft), it took two people 8 days to implement the whole system and they are going to open source their solution so that other cities can leverage it. I haven’t seen yet where and how they are going to release it but I’ll keep you posted if I find out.

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• System backup with Norton Ghost

  - by Mehper C. Palavuzlar

  I will upgrade my system from Windows Vista Home Premium (x64) to Windows 7 (x64). Before starting the upgrade process, I want to back up my current system with Norton Ghost. I have never used it before, so I need assistance to do that. At the moment, there is 139 GB used space by Vista and I have 1 TB external HD connected via USB. If you can tell me the step by step instructions about how to back up and how to restore if the upgrade somehow fails, I'll appreciate that. Thanks.

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• FFMpeg installation problem

  - by Thomas

  Hi I have problem installing ffmpeg. I follow this url: https://www.crucialp.com/resources/tutorials/server-administration/how-to-install-ffmpeg-ffmpeg-php-mplayer-mencoder-flv2tool-LAME-MP3-Encoder-libog.php Setting up repositories core 100% |=========================| 1.1 kB 00:00 rpmforge 100% |=========================| 1.1 kB 00:00 Error: Cannot find a valid baseurl for repo: updates [root@02e7709 src]# yum install subversion ruby ncurses-devel Loading "installonlyn" plugin Setting up Install Process Setting up repositories core 100% |=========================| 1.1 kB 00:00 rpmforge 100% |=========================| 1.1 kB 00:00 Error: Cannot find a valid baseurl for repo: updates [root@02e7709 src]# svn checkout svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg -bash: svn: command not found [root@02e7709 src]# svn command not found and throws error Error: Cannot find a valid baseurl for repo: updates I am installing in fedora core 6 64 bit

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• FFMpeg installation problem

  - by Thomas

  Hi I have problem installing ffmpeg. I follow this url: https://www.crucialp.com/resources/tutorials/server-administration/how-to-install-ffmpeg-ffmpeg-php-mplayer-mencoder-flv2tool-LAME-MP3-Encoder-libog.php Setting up repositories core 100% |=========================| 1.1 kB 00:00 rpmforge 100% |=========================| 1.1 kB 00:00 Error: Cannot find a valid baseurl for repo: updates [root@02e7709 src]# yum install subversion ruby ncurses-devel Loading "installonlyn" plugin Setting up Install Process Setting up repositories core 100% |=========================| 1.1 kB 00:00 rpmforge 100% |=========================| 1.1 kB 00:00 Error: Cannot find a valid baseurl for repo: updates [root@02e7709 src]# svn checkout svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg -bash: svn: command not found [root@02e7709 src]# svn command not found and throws error Error: Cannot find a valid baseurl for repo: updates I am installing in fedora core 6 64 bit

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• Add a Graphical User Interface (GUI) to the Microsoft Robocopy Command Line Tool

  - by Lori Kaufman

  Robocopy, or “Robust File Copy,” is a command line directory replication tool from Microsoft. It is available as part of Windows 7 and Vista as a standard feature, and was available as part of the Windows Server 2003 Resource Kit. NOTE: For Windows XP, you can obtain Robocopy by downloading the resource kit. Robocopy allows you to setup simple or advanced backup strategies. It provides such features as multi-threaded copying, mirroring or synchronization mode, automatic retry, and the ability to resume the copying process. If you are comfortable with using command line tools, you can run Robocopy directly on the command line using the command syntax and options. You can also download the command line reference and usage notes for Robocopy as a PDF file. If you are more comfortable using a graphical user interface, or GUI, rather than the command line, there are a couple of options for adding a GUI to the Robocopy command line tool, making it easier to use. Both tools, RoboMirror and RichCopy, are discussed below and links to download each tool are provided. How to Factory Reset Your Android Phone or Tablet When It Won’t Boot Our Geek Trivia App for Windows 8 is Now Available Everywhere How To Boot Your Android Phone or Tablet Into Safe Mode

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• Upgrading from 2005 to R2

  - by DavidWimbush

  We're about to take the plunge and upgrade our servers from SQL 2005 to SQL 2008 R2. Real world accounts of people upgrading to R2 are a bit hard to find so I thought it might be useful to blog what happens. (I don't count marketing 'case studies' that just say stuff like "The process was effortless and the upgrade will pay for itself by the end the week.") We're using the database engine, Analysis Services and Reporting Services so upgrading by a major version number was looking a bit daunting. I wasn't expecting much trouble on the engine side of things but, as most of the action in 2008 and R2 appears to have been on the Reporting and BI front, I expected to have quite a bit of work to do. But our testing so far has been one nice surprise after another: The 2005 backups restore cleanly onto R2. R2's BI Studio upgraded the Reporting and Analysis Services solutions without any issues. The cubes all deployed and processed just fine. R2 BI Studio interacts fine with TFS 2008 version control. I'll blog some more as things develop.  

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• Automated “ubuntu-12.04.1-server-amd64” OS installation on physical machine

  - by user285336

  We are using Physical server and are in process of Automated “ubuntu-12.04.1-server-amd64” OS installation on it. There are two HDD for OS installation purpose and there are RAID1 relation between them. This setup has been done through BIOS. The kickstart configuration file looks like this: #Generated by Kickstart Configurator #platform=AMD64 or Intel EM64T #System language lang en_US #Language modules to install langsupport en_US #System keyboard keyboard us #System mouse mouse #System timezone timezone Asia/Dili #Root password rootpw --iscrypted $1$Yl1QJyta$KzIT.kq3i9E5XaiQKcUJn/ #Initial user user ankit --fullname "Ankit" --iscrypted --password $1$c6Yflpea$pi1QQ59/jgywmGwBv25z3/ #Reboot after installation reboot #Use text mode install text #Install OS instead of upgrade install #Use Web installation url --url my_repo_location #System bootloader configuration bootloader --location=mbr #Clear the Master Boot Record zerombr yes #Partition clearing information clearpart --all --initlabel #Disk partitioning information part /boot --fstype ext4 --size 100 --ondisk sda part / --fstype ext4 --size 10000 --ondisk sda part /var --fstype ext4 --size 10000 --ondisk sda part swap --size 1024 --ondisk sdb #System authorization infomation auth --useshadow --enablemd5 #Network information network --bootproto=dhcp --device=eth0 #Firewall configuration firewall --enabled --trust=eth0 --http --ftp --ssh --telnet --smtp #X Window System configuration information xconfig --depth=8 --resolution=640x480 --defaultdesktop=GNOME But I am getting the below error : No root file system is defined Please suggest on this. Do we need to do any modification in kickstart configuration file. Any help in this regard will be very helpful for us. The automated Ubuntu OS installation is successful in Virtual Machine(VM) with the above ks.cfg (kickstart configuration file ) but failing in case of physical machine. Please suggest on this and if possible provide the new ks.cfg file to resolve above problem. Thanks & Regards, Rajesh Prasad

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• ODI 11g – Expert Accelerator for Model Creation

  - by David Allan

  Following on from my post earlier this morning on scripting model and topology creation tonight I thought I’d add a little UI to make those groovy functions a little more palatable. In OWB we have experts for capturing user input, with the groovy console we open up opportunities to build UI around the scripts in a very easy way – even I can do it;-) After a little googling around I found some useful posts on SwingBuilder, the most useful one that I used for the dialog below was this one here. This dialog captures user input for the technology and context for the model and logical schema etc to be created. You can see there are a variety of interesting controls, and its really easy to do. The dialog captures the users input, then when OK is pressed I call the functions from the earlier post to create the logical schema (plus all the other objects) and model. The image below shows what was created, you can see the model (with typo in name), the model is Oracle technology and references the logical schema ORACLE_SCOTT (that I named in dialog above), the logical schema is mapped via the GLOBAL context to the data server ORACLE_SCOTT_DEV (that I named in dialog above), and the physical schema used was just the user name that I connected with – so if you wanted a different user the schema name could be added to the dialog. In a nutshell, one dialog that encapsulates a simpler mechanism for creating a model. You can create your own scripts that use dialogs like this, capture input and process. You can find the groovy script for this is here odi_create_model.groovy, again I wrapped the user capture code in a groovy function and return the result in a variable and then simply call the createLogicalSchema and createModel functions from the previous posting. The script I supplied above has everything you will need. To execute use Tools->Groovy->Open Script and then execute the green play button on the toolbar. Have fun.

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• 8051 MCU debug board function

  - by b-gen-jack-o-neill

  Hi, in school I have written many programs for 8051 compatible CPU. But I never actually knew how our "debug" sets worked. I mean, we test our programs in special sets, which actually allow you to very simply load program to CPU via PC serial port. But I thing you know this musch more better than I. But how it works? I mean, I know there is chip which adjusts signal level from PC serial port to TTL logic, and than connected to serial line of 8051. But thats all I know. Actually even my teacher doesen´t know how it works, since school bought it all. So, I suspect there is some program already running in the 8051 which handles communication and stores your program into memory, am I right? But, how can you make 8051 to process instructions from different location than ROM? Becouse if I am right, you cannot write into ROM memory by any instruction, as well as 8051 can only read instructions from ROM?

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• Can Windows-Security-SPP block execution of .exe?

  - by Kirk Marple

  We're seeing a strange situation, where some executables won't run from a Windows command prompt (running as admin). Just running the command (say, filename.exe) gives no response on the console. No errors, no output, nothing. If we copy over the same Windows .exe from a different folder, it "magically" starts working, and we see the default console output. (Happens both on Win7 x64, and Win2008R2 x64. Application is running as 32-bit process.) At the time when it accesses the .exe, I can see events in the application and system logs regarding Windows-Security-SPP, and it makes me believe that the .exe is being blocked from execution. Does this sound familiar?

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• HAProxy -- pause/queue all traffic without losing requests

  - by Marc

  I basically have the same problem as mentioned in this thread -- I would like to temporarily suspend all requests to all servers of a certain backend, so that I can upgrade the backend and the database it uses. Since this is a live system, I would like to queue up requests, and send them to the backend servers once they've been upgraded. Since I'm doing a database upgrade with the code change, I have to upgrade all backend servers simultaneously, so I can't just bring one down at a time. I tried using the tcp-request options combined with removing the static healthcheck file as mentioned in that thread, but had no luck. Setting the default "maxconn" value to 0 seems to pause and queue connections as desired, but then there seems to be no way to increase the value back to a positive number without restarting HAProxy, which kills all requests that had been queued up until that point. (The "hot-reconfiguration" options using -sf and -st start a new process, which doesn't seem to do what I want). Is what I'm trying to do possible?

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