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• What's the best way of marketing to programmers?

  - by Stuart

  Disclaimer up front - I'm definitely not going to include any links in here - this question isn't part of my marketing! I've had a few projects recently where the end product is something that developers will use. In the past I've been on the receiving end of all sorts of marketing - as a developer I've gotten no end of junk - 1000s of pens, tee-shirts and mouse pads; enough CDs to keep my desk tea-free; some very useful USB keys with some logos I no longer recognise; a small forest's worth of leaflets; a bulging spam folder full of ignored emails, etc... So that's my question - What are good ways to market to developers? And as an aside - are developers the wrong people to target? - since we so often don't have a purchasing budget anyways!

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• Tessellation Texture Coordinates

  - by Stuart Martin

  Firstly some info - I'm using DirectX 11 , C++ and I'm a fairly good programmer but new to tessellation and not a master graphics programmer. I'm currently implementing a tessellation system for a terrain model, but i have reached a snag. My current system produces a terrain model from a height map complete with multiple texture coordinates, normals, binormals and tangents for rendering. Now when i was using a simple vertex and pixel shader combination everything worked perfectly but since moving to include a hull and domain shader I'm slightly confused and getting strange results. My terrain is a high detail model but the textured results are very large patches of solid colour. My current setup passes the model data into the vertex shader then through the hull into the domain and then finally into the pixel shader for use in rendering. My only thought is that in my hull shader i pass the information into the domain shader per patch and this is producing the large areas of solid colour because each patch has identical information. Lighting and normal data are also slightly off but not as visibly as texturing. Below is a copy of my hull shader that does not work correctly because i think the way that i am passing the data through is incorrect. If anyone can help me out but suggesting an alternative way to get the required data into the pixel shader? or by showing me the correct way to handle the data in the hull shader id be very thankful! cbuffer TessellationBuffer { float tessellationAmount; float3 padding; }; struct HullInputType { float3 position : POSITION; float2 tex : TEXCOORD0; float3 normal : NORMAL; float3 tangent : TANGENT; float3 binormal : BINORMAL; float2 tex2 : TEXCOORD1; }; struct ConstantOutputType { float edges[3] : SV_TessFactor; float inside : SV_InsideTessFactor; }; struct HullOutputType { float3 position : POSITION; float2 tex : TEXCOORD0; float3 normal : NORMAL; float3 tangent : TANGENT; float3 binormal : BINORMAL; float2 tex2 : TEXCOORD1; float4 depthPosition : TEXCOORD2; }; ConstantOutputType ColorPatchConstantFunction(InputPatch<HullInputType, 3> inputPatch, uint patchId : SV_PrimitiveID) { ConstantOutputType output; output.edges[0] = tessellationAmount; output.edges[1] = tessellationAmount; output.edges[2] = tessellationAmount; output.inside = tessellationAmount; return output; } [domain("tri")] [partitioning("integer")] [outputtopology("triangle_cw")] [outputcontrolpoints(3)] [patchconstantfunc("ColorPatchConstantFunction")] HullOutputType ColorHullShader(InputPatch<HullInputType, 3> patch, uint pointId : SV_OutputControlPointID, uint patchId : SV_PrimitiveID) { HullOutputType output; output.position = patch[pointId].position; output.tex = patch[pointId].tex; output.tex2 = patch[pointId].tex2; output.normal = patch[pointId].normal; output.tangent = patch[pointId].tangent; output.binormal = patch[pointId].binormal; return output; } Edited to include the domain shader:- [domain("tri")] PixelInputType ColorDomainShader(ConstantOutputType input, float3 uvwCoord : SV_DomainLocation, const OutputPatch<HullOutputType, 3> patch) { float3 vertexPosition; PixelInputType output; // Determine the position of the new vertex. vertexPosition = uvwCoord.x * patch[0].position + uvwCoord.y * patch[1].position + uvwCoord.z * patch[2].position; output.position = mul(float4(vertexPosition, 1.0f), worldMatrix); output.position = mul(output.position, viewMatrix); output.position = mul(output.position, projectionMatrix); output.depthPosition = output.position; output.tex = patch[0].tex; output.tex2 = patch[0].tex2; output.normal = patch[0].normal; output.tangent = patch[0].tangent; output.binormal = patch[0].binormal; return output; }

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• SAB BizTalk Archiving Pipeline Component v0.2

  - by Stuart Brierley

  Just released to Codeplex is an updated version of my archiving pipeline component for BizTalk. The changes in this release are: Addition of FTP adapter macros to the base macros and File adapter macros. Fix for the issue of garbage collection of data streams within pipelines as discussed in this previous blog entry. Now looks for OutboundTransportType in addition to InboundTransportType to pick up send port transport type; Therefore changed %InboundTransportType% macro to %TransportType%. An initial outline of the project can be read here.

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• Is there an equivalent to the Max OS X software Hazel that runs on Ubuntu?

  - by Stuart Woodward

  Is there an equivalent to the Max OS X software Hazel that runs on Ubuntu? "Hazel watches whatever folders you tell it to, automatically organizing your files according to the rules you create. It features a rule interface [..]. Have Hazel move files around based on name, date, type, what site/email address it came from [..] and much more. Automatically put your music in your Music folder, movies in Movies. Keep your downloads off the desktop and put them where they are supposed to be." This question probably won't make sense unless you have used Hazel, but basically you can define rules via the GUI to move and rename files automatically to make an automated workflow.

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• MySQL - Configuration

  - by Stuart Brierley

  Having previously detailed how to install MySQL Server, the next step is configuring MySQL. The MySQL configuration wizard can either be run immediately following installation from the MySQL installation wizard or manually from the Start Menu. Following the splash screen you can then choose whether to run a detailed or standard configuration. The detailed configuration allows you to create the optimal configuration for your specific machine, whereas the standard configuration creates a general configuration that can then be manually tuned. I chose detailed.   You are then asked to choose the type of server instance that is being configured. In this case it is a developer machine. Following this you are asked to choose the type of database usage that you expect on the server. I opted for multifunctional. You must then specify the location of the InnoDB tablespace.   Next specify the number of concurent connections to the server.   Now you must configure the networking options. I left the Strict mode enabled as this is the recommended option, but I disabled TCP/IP networking as I wanted to restrict this MySQL installation to the local machine only.   Set the character set that is best suited to your use - for me this was the default standard character set. Next up is the option to run MySQL as a service and whether or not to include the mysql dircetories in the windows PATH. I kept the install as a windows service option enabled, but unchecked the Launch MySQL server automatically option. This is because I only wanted MySQL running when I specifically want to use it. I also enabled the include in windows PATH option.   You can then change the security settings for the mysql installation. I opted to change the root password, disable root from local machines and disable annoymous access.   You are now ready to execute the configuration.   Once completed you should hopefully see the completed screen with lots of nice ticks against the various configuration tasks.

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• BizTalk 2009 - The Community ODBC Adapter: Schema Generation

  - by Stuart Brierley

  Having previously detailed the installation of the Community ODBC Adapter for BizTalk 2009, the next thing I will be looking at is the generation of schemas using this ODBC adapter. Within your BizTalk 2009 project, right click the project and select Add Generated Items.  In the resultant window choose Add Adapter Metadata and click Add to open the Add Adapter Wizard. Check that the BizTalk Server and Database names are correct, select the ODBC adapter and click next. You must now set the connection string. To start with choose set, then new DSN (data source name). You now need to define the Data Source you will be connecting to.  On the User DSN tab select Add add then driver you want to use. In this case I am going to use the MySQL ODBC Driver.  A User DSN will only be visible on the current machine with you as a user. * Although I initially set up a User DSN and this was fine for creating schemas with, I later realised that you actually need a system DSN as the BizTalk host service needs this to be able connect to the database on a receive or send port. You will then be asked to Set up the MySQL ODBC Data Source.  In my case this is a local database making use of named pipes, so I had to make sure that I ticked the "Force use of named pipes" check box and removed the "# The Pipe the MySQL Server will use socket=mysql" line from the mysql.ini; with this is place the connection would fail as there is no apparent way to specify the pipe name in the ODBC driver configuration. This will then update the User DSN tab with the new Data Source.  Make sure that you select it and press OK. Select it again in the Choose Data Source window and press OK.  On the ODBC transport window select next. You will now be presented with the Schema Information window, where you must supply the namespace, type and root element names for your schema. Next choose the type of statement that you will be using to create your schema - in this case I am using a stored procedure. *I later discovered that this option is fine for MySQL stored procedures without input parameters, but failed for MySQL stored procedures with input parameters.  (I will be posting on the way to handle input parameters soon) Next you will need to specify the name of the stored procedure.  In this case I have a simple stored procedure to return all the data held by my TestTable in MySQL. Select * from TestTable; The table itself has three columns: Name, Sex and Married. Selecting finish should now hopefully create your schemas based on the input and output from your stored procedure. In my case I have:   An empty schema for the request; after all I have no parameters for the stored procedure.  A response schema comprised of a Table Record with Name, Sex and Married children. Next I will be looking at the use of the ODBC adpater with: Receive ports Send ports

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• Changing the RSS and Dynamic Views layout when using Blogger as a Podcast index

  - by Stuart

  I'm trying to set up a podcast service at present. This is just a 'spare time' task - so I wanted a quick, easy way to do it. To get this working: I've ripped (with owner permission) some YouTube content across to MP3 and hosted this content on Azure Blob Storage. I've posted blog posts - with linked mp3 content - inside a Blogger website. I've registered the RSS feed with iTunes This all seems to be working OK - http://dotnetmobilepodcast.blogspot.co.uk/ However, when it comes to a couple of final touches, then I'm hitting problems. RSS I would like to add iTunes metadata to the RSS feed. However, I can't find any way to do this inside the Blogger system. To workaround this I've tried using FeedBurner with its StreamCast plugin. However, the output from FeedBurner doesn't seem to be accepted by iTunes - e.g. http://feeds.feedburner.com/MobileAppCSharpPodcasts leads to this very unhelpful 11111 message: Is there any other way I can get this iTunes metadata content into the Blogger RSS feed - e.g. maybe an alternative service or a Yahoo! Pipe? Showing the MP3 files in the Blog I'm trying to work out how to automatically display the linked enclosures inside the blog posts - do the blogger Dynamic Views don't seem to have any way of doing this? I've found the HTML in those views very difficult to follow. If necessary I can workaround this using manual entries into each blog post... but I'd prefer to do this programatically if I can.

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• BizTalk 2010 - BAM Portal - No Views to Display

  - by Stuart Brierley

  Our latest BizTalk Server 2010 development project is utilising BizTalk as the integration ring around a new and sizable implementaion of Dynamics AX 2012. With this project we have decided to use BAM to monitor the processes within our various new applications.Although I have been specialising in BizTalk for around 9 years, this is my first time using BAM so it is an interesting process to be going through.Recently when deploying a solution I was attempting to check the BAM Portal to see that the View that I had created was properly deployed and that the Activity I was populating was being surfaced in the Portal as expected. Initially I was presented with the message "No view to display" in the "My Views" area of the BAM Portal landing page.This was because you need to set the permissions on the views that you want to see from the command line using the bm.exe tool:bm.exe add-account -AccountName:YourServerOrDomain\YourUsername -View:YourViewThis tool can be found in the BAM folder at the BizTalk installation location:C:\Program Files (x86)\Microsoft BizTalk Server 2010\Tracking

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• Adjusting server-side tickrate dynamically

  - by Stuart Blackler

  I know nothing of game development/this site, so I apologise if this is completely foobar. Today I experimented with building a small game loop for a network game (think MW3, CSGO etc). I was wondering why they do not build in automatic rate adjustment based on server performance? Would it affect the client that much if the client knew this frame is based on this tickrate? Has anyone attempted this before? Here is what my noobish C++ brain came up with earlier. It will improve the tickrate if it has been stable for x ticks. If it "lags", the tickrate will be reduced down by y amount: // GameEngine.cpp : Defines the entry point for the console application. // #ifdef WIN32 #include <Windows.h> #else #include <sys/time.h> #include <ctime> #endif #include<iostream> #include <dos.h> #include "stdafx.h" using namespace std; UINT64 GetTimeInMs() { #ifdef WIN32 /* Windows */ FILETIME ft; LARGE_INTEGER li; /* Get the amount of 100 nano seconds intervals elapsed since January 1, 1601 (UTC) and copy it * to a LARGE_INTEGER structure. */ GetSystemTimeAsFileTime(&ft); li.LowPart = ft.dwLowDateTime; li.HighPart = ft.dwHighDateTime; UINT64 ret = li.QuadPart; ret -= 116444736000000000LL; /* Convert from file time to UNIX epoch time. */ ret /= 10000; /* From 100 nano seconds (10^-7) to 1 millisecond (10^-3) intervals */ return ret; #else /* Linux */ struct timeval tv; gettimeofday(&tv, NULL); uint64 ret = tv.tv_usec; /* Convert from micro seconds (10^-6) to milliseconds (10^-3) */ ret /= 1000; /* Adds the seconds (10^0) after converting them to milliseconds (10^-3) */ ret += (tv.tv_sec * 1000); return ret; #endif } int _tmain(int argc, _TCHAR* argv[]) { int sv_tickrate_max = 1000; // The maximum amount of ticks per second int sv_tickrate_min = 100; // The minimum amount of ticks per second int sv_tickrate_adjust = 10; // How much to de/increment the tickrate by int sv_tickrate_stable_before_increment = 1000; // How many stable ticks before we increase the tickrate again int sys_tickrate_current = sv_tickrate_max; // Always start at the highest possible tickrate for the best performance int counter_stable_ticks = 0; // How many ticks we have not lagged for UINT64 __startTime = GetTimeInMs(); int ticks = 100000; while(ticks > 0) { int maxTimeInMs = 1000 / sys_tickrate_current; UINT64 _startTime = GetTimeInMs(); // Long code here... cout << "."; UINT64 _timeTaken = GetTimeInMs() - _startTime; if(_timeTaken < maxTimeInMs) { Sleep(maxTimeInMs - _timeTaken); counter_stable_ticks++; if(counter_stable_ticks >= sv_tickrate_stable_before_increment) { // reset the stable # ticks counter counter_stable_ticks = 0; // make sure that we don't go over the maximum tickrate if(sys_tickrate_current + sv_tickrate_adjust <= sv_tickrate_max) { sys_tickrate_current += sv_tickrate_adjust; // let me know in console #DEBUG cout << endl << "Improving tickrate. New tickrate: " << sys_tickrate_current << endl; } } } else if(_timeTaken > maxTimeInMs) { cout << endl; if((sys_tickrate_current - sv_tickrate_adjust) > sv_tickrate_min) { sys_tickrate_current -= sv_tickrate_adjust; } else { if(sys_tickrate_current == sv_tickrate_min) { cout << "Please reduce sv_tickrate_min..." << endl; } else{ sys_tickrate_current = sv_tickrate_min; } } // let me know in console #DEBUG cout << "The server has lag. Reduced tickrate to: " << sys_tickrate_current << endl; } ticks--; } UINT64 __timeTaken = GetTimeInMs() - __startTime; cout << endl << endl << "Total time in ms: " << __timeTaken; cout << endl << "Ending tickrate: " << sys_tickrate_current; char test; cin >> test; return 0; }

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• When designing a job queue, what should determine the scope of a job?

  - by Stuart Pegg

  We've got a job queue system that'll cheerfully process any kind of job given to it. We intend to use it to process jobs that each contain 2 tasks: Job (Pass information from one server to another) Fetch task (get the data, slowly) Send task (send the data, comparatively quickly) The difficulty we're having is that we don't know whether to break the tasks into separate jobs, or process the job in one go. Are there any best practices or useful references on this subject? Is there some obvious benefit to a method that we're missing? So far we can see these benefits for each method: Split Job lease length reflects job length: Rather than total of two Finer granularity on recovery: If we lose outgoing connectivity we can tell them all to retry The starting state of the second task is saved to job history: Helps with debugging (although similar logging could be added in single task method) Single Single job to be scheduled: Less processing overhead Data not stale on recovery: If the outgoing downtime is quite long, the pending Send jobs could be outdated

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• Ubuntu 12.04 I'm trying to ugrade my Geforce 8400 to Geforce GTX 560, getting a black screen

  - by Stuart Anderson

  I have an NVidia Geforce 8400 which is working fine in Ubuntu 12.04. I have just purchased an NVidia GeForce GTX 560 and have been trying to install it. No matter what I do all I get is a black screen on boot up. I have tried; 1/ Additional Drivers, driver version 295.40, this works for the GeForce 8400 but gives me a black screen with the GTX 560 when I boot. 2/ Downloaded driver version 295.40 from NVidias site, was able to install it successfully, it works with my 8400 but gives me a black screen with the GTX 560 when I boot. Are there any options I can try?

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• Audio PC Software running on UBUNTU

  - by Stuart

  Hi I recently built my own home studio PC. i5 CPU) 8Gb RAM, solid state drive etc. Basically the fastest PC I've ever built. I have a 32bit version of XP and all the music software I have runs on this. However I want to use all the RAM and can only do so by moving to 64bit Windows. My questions are: Will Ubuntu run my Audio software or would I need to get Linux specific Audio software? Are there any good (pro) shareware linux based multi-track audio software packages? Will VST plug-ins work through UBUNTU? Cheers, Stu.

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• cannot get my wifi to work on my acer aspire 5552

  - by stuart

  I am very new to this forum and also linux. I have managed to install wubi on my laptop fine and I can get on the net with ethernet, But when I try to download and install the wifi drivers it keeps giving me what I think is a generic var/ log error and just starts to hang on install then says it will not install. Can anyone help please as I really really want to move from windows and this is not helping me..A big thanks in advance :)

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• Javascript won't execute in iPhone Safari

  - by Stuart Meyer

  I'm running into this issue only because I recently purchased an iPhone. The javascript for a picture carousel on my website (http://www.stuartmeyerphotography.com) won't execute in Safari for iPhone. I thought it worked on Mac Safari last I checked with a friend who had a Mac (a year ago), but now I need to go back and check that too to make sure it works on the Mac. "View source" on my website would show the entire html page, but I've pulled the code from the body section to show here: carousel({id:'Photos', border:'', size_mode:'image', width:120, height:120, sides:8, steps:75, speed:4, direction:'left', images:['mainthumbs/babiesthumb.jpg','mainthumbs/engagementsthumb.jpg','mainthumbs/dancethumb1.jpg','mainthumbs/artistthumb.jpg','mainthumbs/portraitsthumb1.jpg','mainthumbs/seniorsthumb1.jpg','mainthumbs/wedthumb1.jpg'], links:['babies/babies.html','engagements/engagemainshow/engagementpictures.html','dance/dancepictures.html','artists/artists.html','portraits/portraits.html','seniors/highschoolseniors.html','weddings/weddings.html'], lnk_base:'', lnk_targets:['_iframe1', '_iframe1', '_iframe1', '_iframe1', '_iframe1', '_iframe1', '_iframe1' ], lnk_attr:['width=200,height=300,top=200,menubar=yes', 'width=300,height=200,left=400,scrollbars=yes', 'width=150,height=250,left=200,top=100', ''], titles:['Babies', 'Engagements', 'Dance', 'Artists', 'Portraits', 'HS Seniors', 'Weddings'], image_border_width:1, image_border_color:'#E3F0A1' });   </div> Any thoughts? -Stuart

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• This is a great job opportunity!!! [closed]

  - by Stuart Gordon

  ASP.NET MVC Web Developer / London / £450pd / £25-£50,000pa / Interested contact [email protected] ! As a web developer within the engineering department, you will work with a team of enthusiastic developers building a new ASP.NET MVC platform for online products utilising exciting cutting edge technologies and methodologies (elements of Agile, Scrum, Lean, Kanban and XP) as well as developing new stand-alone web products that conform to W3C standards. Key Responsibilities and Objectives: Develop ASP.NET MVC websites utilising Frameworks and enterprise search technology. Develop and expand content management and delivery solutions. Help maintain and extend existing products. Formulate ideas and visions for new products and services. Be a proactive part of the development team and provide support and assistance to others when required. Qualification/Experience Required: The ideal candidate will have a web development background and be educated to degree level in a Computer Science/IT related course plus ASP.NET MVC experience. The successful candidate needs to be able to demonstrate commercial experience in all or most of the following skills: Essential: ASP.NET MVC with C# (Visual Studio), Castle, nHibernate, XHTML and JavaScript. Experience of Test Driven Development (TDD) using tools such as NUnit. Preferable: Experience of Continuous Integration (TeamCity and MSBuild), SQL Server (T-SQL), experience of source control such as Subversion (plus TortioseSVN), JQuery. Learn: Fluent NHibernate, S#arp Architecture, Spark (View engine), Behaviour Driven Design (BDD) using MSpec. Furthermore, you will possess good working knowledge of W3C web standards, web usability, web accessibility and understand the basics of search engine optimisation (SEO). You will also be a quick learner, have good communication skills and be a self-motivated and organised individual.

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• Crystal Reports.NET problems accessing FieldObject for page count

  - by Stuart A

  Hi, We're using Crystal Reports.NET that was bundled with VS2005. We have a confirmation booking form letter report that we want to batch print. Generally this prints one page per person on letterhead paper, however occasionally if they've booked lots of courses the letter rolls over to two pages. The second page should not be printed to letterhead paper. Basically, because it's a rare occurance I was just going to print the lot and pause if a particular letter went over 1 page. I.e. Load the report, grab the page count, hollah at the user if it's more than one page otherwise carry on regardless. I have dropped a TotalPageCount on the footer of my report (Which I would supress if it worked!) and then try and read it in my application. Once I've loaded the document I am trying to call report.ReportDefinition.ReportObjects("TotalPageCount1") Which is of type CrystalDecisions.CrystalReports.Engine.FieldObject I cannot seem to get the value out of this for love nor money (nor any amount of cursing and swearing!) I can read any items of type TextObject, but if I append the TotalPageCount to a text field, it shows correctly in the report but then returns "Page count: TotalPageCount" rather than "Page count: 1" for example. Soo, short of going out of my mind, does anyone have any suggestions? Either a way to read the value or a way round it. The printer doesn't have multiple trays, though even if we got one, I'm not sure how to convince crystal to print different pages to different trays. Best regards, Stuart P.S. - is it a sign that the "crystal-reports" tag has a count of 666? :O(

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• Why am I getting warnings about missing DLLs when adding a node to a WSFC?

  - by Stuart Branham

  We're getting the following two errors when adding a node to our WSFC. The node was added successfully, but the 'SQL Server Availability Group' resource type could not be installed on it. Unable to find 'hadrres.dll' on any of the cluster nodes. The node was added successfully, but the 'SQL Server FILESTREAM Share' resource type could not be installed on it. Unable to find 'fssres.dll' on any of the cluster nodes. This cluster is going to host an AlwaysOn Availability Group. SQL Server 2012 is installed on both nodes, and availability groups are enabled on both. Filestream access is also configured on both. Another curious thing I'm seeing is that my instance on the second node doesn't appear in Configuration Manager. Anyone know what may be going on here?

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• How do I identify and fix the cause of transaction log growth on SIMPLE recovery model databases?

  - by Stuart B

  I recently upgraded our SQL Server 2008 installations to service pack 2. One of our databases is on the simple recovery model, but its transaction log is growing extremely fast. The path I'm currently investigating is that we have a transaction somewhere out there stuck in active state. Here is why: select name, recovery_model_desc, log_reuse_wait_desc from sys.databases where name in ('SimpleDB') name recovery_model_desc log_reuse_wait_desc SimpleDB SIMPLE ACTIVE_TRANSACTION When I check my active transactions, I get the following. Note that I installed SP2 and restarted our server on 12/25 at around noonish. select transaction_id, name, transaction_begin_time, transaction_type from sys.dm_tran_active_transactions transaction_id name transaction_begin_time transaction_type 233 worktable 2010-12-25 12:44:29.283 2 236 worktable 2010-12-25 12:44:29.283 2 238 worktable 2010-12-25 12:44:29.283 2 240 worktable 2010-12-25 12:44:29.283 2 243 worktable 2010-12-25 12:44:29.283 2 245 worktable 2010-12-25 12:44:29.283 2 62210 tran_sp_MScreate_peer_tables 2010-12-25 12:45:00.880 1 55422856 user_transaction 2010-12-28 16:41:56.703 1 55422889 SELECT 2010-12-28 16:41:57.303 2 470 LobStorageProviderSession 2010-12-25 12:44:30.510 2 Note that according to the documentation a transaction_type of 1 means read/write, and 2 means read-only. So, my line of thinking is that the trans_sp_MScreate_peer_tables transaction is stuck for some reason and holding up transaction log truncation. Is this a plausible scenario? Correct me if my line of thinking is off, as I'm not a SQL Server expert. If this is correct, how do I erase that transaction so that my transaction log is truncated as usual?

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• Does switching Linux distributions trash your home directory?

  - by Stuart Woodward

  I have an Ubuntu installation on my netbook and after trying it out on a bootable USB I have decided to switch to Mint Linux. If I run the Mint installer from the USB will it totally trash my home directory? Or will it be equivalent to an upgrade where the systems files that need to be replaced will change leaving the users folders as is. (Yes, I plan to backup the important files in the /home folders before hand...)

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• Rails Passenger Nginx cannot load such file -- bundler

  - by Stuart

  I have set up Rails, Passenger, nginx, and PostgreSQL on Ubuntu Server 12.04LTS. Upon trying to access the application/website, however, I am greeted with an error page saying that the application could not be started because a source file is missing. Error message: cannot load such file -- bundler. My nginx config (/opt/nginx/conf/nginx.conf): user railsapp; worker_processes 1; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; sendfile on; keepalive_timeout 65; passenger_root /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14; passenger_ruby /home/railsapp/.rvm/rubies/ruby-1.9.3-p194/bin/ruby; server { listen 80; server_name fitness_schedules.local; root /home/railsapp/fitness_schedules/public; passenger_enabled on; rack_env development; } } Here is the error message: A source file that the application requires, is missing. It is possible that you didn't upload your application files correctly. Please check whether all your application files are uploaded. A required library may not installed. Please install all libraries that this application requires. Further information about the error may have been written to the application's log file. Please check it in order to analyse the problem. Error message: cannot load such file -- bundler Exception class: LoadError Application root: /home/railsapp/fitness_schedules Here is the backtrace from the webpage that is presented by nginx: Backtrace: # File Line Location 0 /home/railsapp/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb 36 in `require' 1 /home/railsapp/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb 36 in `require' 2 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/utils.rb 325 in `prepare_app_process' 3 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/rack/application_spawner.rb 156 in `block in initialize_server' 4 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/utils.rb 563 in `report_app_init_status' 5 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/rack/application_spawner.rb 154 in `initialize_server' 6 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/abstract_server.rb 204 in `start_synchronously' 7 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/abstract_server.rb 180 in `start' 8 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/rack/application_spawner.rb 129 in `start' 9 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/spawn_manager.rb 253 in `block (2 levels) in spawn_rack_application' 10 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/abstract_server_collection.rb 132 in `lookup_or_add' 11 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/spawn_manager.rb 246 in `block in spawn_rack_application' 12 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/abstract_server_collection.rb 82 in `block in synchronize' 13 prelude> 10:in `synchronize' 14 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/abstract_server_collection.rb 79 in `synchronize' 15 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/spawn_manager.rb 244 in `spawn_rack_application' 16 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/spawn_manager.rb 137 in `spawn_application' 17 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/spawn_manager.rb 275 in `handle_spawn_application' 18 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/abstract_server.rb 357 in `server_main_loop' 19 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/lib/phusion_passenger/abstract_server.rb 206 in `start_synchronously' 20 /home/railsapp/.rvm/gems/ruby-1.9.3-p194/gems/passenger-3.0.14/helper-scripts/passenger-spawn-server 99 in `' In ~/fitness_schedules/log there are only development and test logs, no production/development logs.

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• Ulimit settings in Oracle 11g on Linux 5

  - by Stuart

  Is there an issue with "Ulimit -Hn" being set too low (at 1024) when (Oracle recommend 65536)? This is for Oracle 64-bit 11g on Linux 5. It is one of the settings that appears to be woefully short of its recommendation. But I am also aware that the database server in question is an Oracle Data Guard Local Standby and should only really have a connection or two from its Primary database server (to ship the redo logs across). The Local Standby database server has 'hung' about 3 times in as many months and then requires a reboot. I do not have access to this server, so rely on others to look at logs etc. The sanity check on kernel params uncovered the low value for "ulimit -Hn". Has anyone ever seen that 'low' value cause a hang or crash?

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• How can I diff two Redhat Linux servers?

  - by Stuart Woodward

  I have two servers that have should have the same setup except for known differences. By running: find / \( -path /proc -o -path /sys -o -path /dev \) -prune -o -print | sort > allfiles.txt I can find a list of all the files on one server and compare it against the list of files on the the other server. This will show me the differences in the names of the files that reside on the servers. What I really want to do is run a checksum on all the files on both of the servers and compare them to also find where the contents are different. e.g find / \( -path /proc -o -path /sys -o -path /dev \) -prune -o -print | xargs /usr/bin/sha1sum Is this a sensible way to do this? I was thinking that rysnc already has most of this functionality but can it be used to provide the list of differences?

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• .NET not processing an XML file in IIS

  - by Stuart McIntosh

  We have 2 servers, 1 already configured with .net which works fine and a new one which appears to be configured the same but when I open an xml page in Internet Explorer it complains about the <% tag. We have IIS on win srvr 2003 SP2. The website is configured with .NET 1.1.4322. In ISAPI extensions have set the .XML extension to use c:\windows\microsoft.net\framework\v1.1.4322\aspnet_isapi.dll But the page: <property name="documentmaxage" value="0"/> <property name="documentmaxstale" value="0"/> <var name="m_Prompt_Path" /> <form id="InitVoiceXmlDoc"> <block> <assign name="m_Prompt_Path" expr="&quot;<% Response.Write(Request.QueryString["m_Prompt_Path"]); %>&quot;"/> </block> </form> gives the error: The XML page cannot be displayed Cannot view XML input using XSL style sheet. Please correct the error and then click the Refresh button, or try again later. The character '<' cannot be used in an attribute value. Error processing resource 'http://localhost:11119/fails.xml'. Lin... &quo... We have the same config on another server which works fine. So are there other options apart from the ISAPI extensions that I need to look at. If I suffix the page .aspx, of course it works fine.

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• Public IP shows strange characters and Facebook registers logged-in session to a different location

  - by Stuart Kershaw

  I'm encountering some IP strangeness today and hoping to find an explanation. In short, I'm based in Seattle, WA with my ISP being Comcast. While browsing Facebook's account settings, I noticed that my active session was located to Mount Laurel, NJ. At that point I ran a search in Google for 'my public IP', which returned an interesting result: a string of characters in the following format: 2601:8:b000:xxx:xxxx:xxxx:xxxx:xxxx Normally, a search for my IP returns something like: 67.xxx.xx.xxx A phone call to Comcast got me nowhere, but using Comcast's phone-menu debugging tools, I was able to send a 'refresh signal' to my modem. After that, the search for 'my public IP' yielded the expected result... for about 5 minutes, and then it returned to the new string of characters. Does anyone know of an explanation for this?

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• apt-get for a package with when "contrib/source/Sources" is not found correctly

  - by Stuart Woodward

  I tried to install Webmin on Ubuntu by following the instructions on http://www.webmin.com/deb.html. Using the Update Manager GUI I added the repositories and the key deb http://download.webmin.com/download/repository sarge contrib deb http://webmin.mirror.somersettechsolutions.co.uk/repository sarge contrib However when I do an: apt-get update apt-get install webmin I get the error: W: Failed to fetch http://download.webmin.com/download/repository/dists/sarge/Release Unable to find expected entry 'contrib/source/Sources' in Release file (Wrong sources.list entry or malformed file) W: Failed to fetch http://webmin.mirror.somersettechsolutions.co.uk/repository/dists/sarge/Release Unable to find expected entry 'contrib/source/Sources' in Release file (Wrong sources.list entry or malformed file) Looing at the page at the URL I can see: 7029066c27ac6f5ef18d660d5741979a 20 contrib/source/Sources.gz Is the error caused by the fact that the Sources are compressed with gzip or am I doing something wrong?

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