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  • Adattárház Fórum 2010. május 11.

    - by Fekete Zoltán
    Holnap, kedden az Adattárház Fórum 2010 rendezvényen egy érdekes eloadásban fog beszélni Jon Mead, a Rittman Mead Consulting egyik alapítója arról, hogyan használja az egyik vezeto egy brit kiskereskedelmi cég az Oracle Exadata / Database Machine rendszert az adattárházának sikeres, nagy teljesítményu muködösének. Az adattárház alapja, az Oracle Database tehát az Exadata platformon fut: Using Exadata in the Retail Sector: a Case Study. Ez az eloadás 15:10-kor kezdodik. 10:10-kor kezdodik a Szállítói kerekasztal, amin jómagam is részt veszek az Oracle oldaláról. Amirol beszélni fogok: Hogyan látja az Oracle az adattárházak fejlodését, és hogyan látja a világ az Oracle-t. 12:00-tól Fisher Erik, Sun fog érdekes eloadást tartani: Amit a hardverekrol mindig tudni szerettél volna címmel az adattárházakhoz használható hardverekrol. Itt is ki fog térni az Exadata / Database Machine megoldásban alkalmazott Smart Flash Cache alapját képezo Flash kártyákra is és a "hagyományos" :) tranzakciós, DW és más rendszerekben használható SSD diszkekre is. 10:20-kor a CERN eloadása kerül reflektorfénybe: From Tera Electronvolts to Terabytes - Physics Databases at CERN címmel. A CERN mindig is extrém felhasználója volt a technológiának, a határokat feszegetve és ezeket innovatív megoldásokkal kezelve.

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  • Reinventing the Wheel – Automating Data Consistency Checks with Powershell

    - by Jonathan Kehayias
    When I started in my current position at the beginning of the year, one of the first things that I did was to schedule a sit down with the various teams of Analysts that exist in our organization to find out more about their systems.  One thing I am always interested in is the manual processes that people do routinely that might be able to be automated.   A couple of the analyst mentioned that they routinely run queries in their systems to identify issues so that they can proactively...(read more)

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  • Oracle on iPad

    - by Aaron Lazenby
    This came across the Twitter-sphere from Steve Wilson (aka @virtualsteve), Oracle Vice President, Systems management:"One of the engineers on the Ops Center team just sent me a pic of OC running on an iPad. Neat!"And here's proof:

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  • Reinventing the Wheel – Automating Data Consistency Checks with Powershell

    - by Jonathan Kehayias
    When I started in my current position at the beginning of the year, one of the first things that I did was to schedule a sit down with the various teams of Analysts that exist in our organization to find out more about their systems.  One thing I am always interested in is the manual processes that people do routinely that might be able to be automated.   A couple of the analyst mentioned that they routinely run queries in their systems to identify issues so that they can proactively...(read more)

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  • Redistribution of sqlpackage.exe [SSDT]

    - by jamiet
    This is a short note for anyone that may be interested in redistributing sqlpackage.exe. If this isn’t you then no need to keep reading. Ostensibly this is here for anyone that bingles for this information. sqlpackage.exe is a command-line that ships with SQL Server Development Tools (SSDT) in SQL Server 2012 and its main purpose (amongst other things) is to deploy .dacpac files from the command-line. Its quite conceivable that one might want to install only sqlpackage.exe rather than the full SSDT suite (for example on a production server) and I myself have recently had that need. I enquired to the SSDT product team about the possibility of doing this. I said: Back in VS DB Proj days it was possible to use VSDBCMD.exe on a machine that did not have the full VS shell install by shipping lots of pre-requisites along for the ride (details at How to: Prepare a Database for Deployment From a Command Prompt by Using VSDBCMD.EXE). Is there a similar mechanism for using VSDBMCD.exe’s replacement, sqlpackage.exe? here was the reply from Barclay Hill who heads up the development team: Yes, SQLPackage.exe is the analogy of VSDBCMD.exe. You can acquire separately, in a stand-alone package, by installing DACFX. You can get it from: Feature pack is here: http://www.microsoft.com/en-us/download/details.aspx?id=29065 Web Platform Installer here: http://www.microsoft.com/web/gallery/install.aspx?appid=DACFX You will notice it has dependencies on SQLDOM and SQLCLRTYPES.  WebPI will install these for you, but it is al carte on the feature pack. So, now you know. I didn’t enquire about licensing of DACFX but given SSDT is free I am going to assume that the same applies to DACFX too. @Jamiet

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  • Redistribution of sqlpackage.exe [SSDT]

    - by jamiet
    This is a short note for anyone that may be interested in redistributing sqlpackage.exe. If this isn’t you then no need to keep reading. Ostensibly this is here for anyone that bingles for this information. sqlpackage.exe is a command-line that ships with SQL Server Development Tools (SSDT) in SQL Server 2012 and its main purpose (amongst other things) is to deploy .dacpac files from the command-line. Its quite conceivable that one might want to install only sqlpackage.exe rather than the full SSDT suite (for example on a production server) and I myself have recently had that need. I enquired to the SSDT product team about the possibility of doing this. I said: Back in VS DB Proj days it was possible to use VSDBCMD.exe on a machine that did not have the full VS shell install by shipping lots of pre-requisites along for the ride (details at How to: Prepare a Database for Deployment From a Command Prompt by Using VSDBCMD.EXE). Is there a similar mechanism for using VSDBMCD.exe’s replacement, sqlpackage.exe? here was the reply from Barclay Hill who heads up the development team: Yes, SQLPackage.exe is the analogy of VSDBCMD.exe. You can acquire separately, in a stand-alone package, by installing DACFX. You can get it from: Feature pack is here: http://www.microsoft.com/en-us/download/details.aspx?id=29065 Web Platform Installer here: http://www.microsoft.com/web/gallery/install.aspx?appid=DACFX You will notice it has dependencies on SQLDOM and SQLCLRTYPES.  WebPI will install these for you, but it is al carte on the feature pack. So, now you know. I didn’t enquire about licensing of DACFX but given SSDT is free I am going to assume that the same applies to DACFX too. @Jamiet

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  • WSUS appears to be functioning, however errors are reported in Application Log (DSS Authentication W

    - by Richard Slater
    I re-installed WSUS a few months ago on a new server as part of a server hardware refresh. It is functioning normally downloading, authorizing and supplying patches to workstations. System Specification: HP DL360 G5 Quad 2.5 Zeon 6GB RAM Not Virtualized WSUS 3.2.7600.3226 SQL 2005 Express Windows 2003 R2 SP2 WSS SSL Enabled Every six hours five events are logged to the Application Event Log: Source | Category | ID | Description -------------------------------------------------------------------------------------- Windows Server Update Services | Web Services | 12052 | The DSS Authentication Web Service is not working. Windows Server Update Services | Web Services | 12042 | The SimpleAuth Web Service is not working Windows Server Update Services | Web Services | 12022 | The Client Web Service is not working Windows Server Update Services | Web Services | 12032 | The Server Synchronization Web Service is not working Windows Server Update Services | Web Services | 12012 | The API Remoting Web Service is not working In addition the following .NET Stack Trace is logged in C:\Program Files\Update Services\LogFiles\SoftwareDistribution.log each stack trace is identical except for the names of the services: 2009-11-27 11:56:52.757 UTC Error WsusService.10 HmtWebServices.CheckApiRemotingWebService ApiRemoting WebService WebException:System.Net.WebException: The request failed with HTTP status 403: Forbidden. at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall) at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) at Microsoft.UpdateServices.Internal.ApiRemoting.Ping(Int32 pingLevel) at Microsoft.UpdateServices.Internal.HealthMonitoring.HmtWebServices.CheckApiRemotingWebService(EventLoggingType type, HealthEventLogger logger) at Microsoft.UpdateServices.Internal.HealthMonitoring.HmtWebServices.CheckApiRemotingWebService(EventLoggingType type, HealthEventLogger logger) at Microsoft.UpdateServices.Internal.HealthMonitoring.HealthMonitoringTasks.ExecuteSubtask(HealthMonitoringSubtask subtask, EventLoggingType type, HealthEventLogger logger) at Microsoft.UpdateServices.Internal.HealthMonitoring.HmtWebServices.Execute(EventLoggingType type) at Microsoft.UpdateServices.Internal.HealthMonitoring.HealthMonitoringTasks.Execute(EventLoggingType type) at Microsoft.UpdateServices.Internal.HealthMonitoring.HealthMonitoringThreadManager.Execute(Boolean waitIfNecessary, EventLoggingType loggingType) at Microsoft.UpdateServices.Internal.HealthMonitoring.RemotingChannel.PrivateLogEvents() at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]& outArgs) at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg, Int32 methodPtr, Boolean fExecuteInContext) at System.Runtime.Remoting.Messaging.ServerObjectTerminatorSink.SyncProcessMessage(IMessage reqMsg) at System.Runtime.Remoting.Lifetime.LeaseSink.SyncProcessMessage(IMessage msg) at System.Runtime.Remoting.Messaging.ServerContextTerminatorSink.SyncProcessMessage(IMessage reqMsg) at System.Runtime.Remoting.Channels.CrossContextChannel.SyncProcessMessageCallback(Object[] args) at System.Runtime.Remoting.Channels.ChannelServices.DispatchMessage(IServerChannelSinkStack sinkStack, IMessage msg, IMessage& replyMsg) at System.Runtime.Remoting.Channels.SoapServerFormatterSink.ProcessMessage(IServerChannelSinkStack sinkStack, IMessage requestMsg, ITransportHeaders requestHeaders, Stream requestStream, IMessage& responseMsg, ITransportHeaders& responseHeaders, Stream& responseStream) at System.Runtime.Remoting.Channels.BinaryServerFormatterSink.ProcessMessage(IServerChannelSinkStack sinkStack, IMessage requestMsg, ITransportHeaders requestHeaders, Stream requestStream, IMessage& responseMsg, ITransportHeaders& responseHeaders, Stream& responseStream) at System.Runtime.Remoting.Channels.Ipc.IpcServerTransportSink.ServiceRequest(Object state) at System.Runtime.Remoting.Channels.SocketHandler.ProcessRequestNow() at System.Runtime.Remoting.Channels.SocketHandler.BeginReadMessageCallback(IAsyncResult ar) at System.Runtime.Remoting.Channels.Ipc.IpcPort.AsyncFSCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOverlapped) at System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP) So far I have tried the following: Ensuring the settings were accurate as per TechNet. Checked that there was a suitable binding to 127.0.0.1 binding in IIS. Gone through and checked the settings in IIS as per TechNet. I have discovered that you can run the command wsusutil checkhealth to force the healt check to run, wsusutil can be found in C:\Program Files\Update Services\Tools. When this executese it will tell you to check the application log.

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  • Now Available: Visual Studio 2010 Release Candidate Virtual Machines with Sample Data and Hands-on-L

    - by John Alexander
    From a message from Brian Keller: “Back in December we posted a set of virtual machines pre-configured with Visual Studio 2010 Beta 2, Visual Studio Team Foundation Server 2010 Beta 2, and 7 hands-on-labs. I am pleased to announce that today we have shipped an updated virtual machine using the Visual Studio 2010 Release Candidate bits, a brand new sample application, and 9 hands-on-labs. This VM is customer-ready and includes everything you need to learn and/or deliver demonstrations of many of my favorite application lifecycle management (ALM) capabilities in Visual Studio 2010. This VM is available in the virtualization platform of your choice (Hyper-V, Virtual PC 2007 SP1, and Windows [7] Virtual PC). Hyper-V is highly recommended because of the performance benefits and snapshotting capabilities. Tailspin Toys The sample application we are using in this virtual machine is a simple ASP.NET MVC 2 storefront called Tailspin Toys. Tailspin Toys sells model airplanes and relies on the application lifecycle management capabilities of Visual Studio 2010 to help them build, test, and maintain their storefront. Major kudos go to Dan Massey for building out this great application for us. Hands-on-Labs / Demo Scripts The 9 hands-on-labs / demo scripts which accompany this virtual machine cover several of the core capabilities of conducting application lifecycle management with Visual Studio 2010. Each document can be used by an individual in a hands-on-lab capacity, to learn how to perform a given set of tasks, or used by a presenter to deliver a demonstration or classroom-style training. Unlike the beta 2 release, 100% of these labs target Tailspin Toys to help ensure a consistent storytelling experience. Software quality: Authoring and Running Manual Tests using Microsoft Test Manager 2010 Introduction to Test Case Management with Microsoft Test Manager 2010 Introduction to Coded UI Tests with Visual Studio 2010 Ultimate Debugging with IntelliTrace using Visual Studio 2010 Ultimate Software architecture: Code Discovery using the architecture tools in Visual Studio 2010 Ultimate Understanding Class Coupling with Visual Studio 2010 Ultimate Using the Architecture Explore in Visual Studio 2010 Ultimate to Analyze Your Code Software Configuration Management: Planning your Projects with Team Foundation Server 2010 Branching and Merging Visualization with Team Foundation Server 2010 “ Check out Brian’s Post for more info including download instructions…

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  • What is the best database design and/or software to model a thesaurus?

    - by Miles O'Keefe
    I would like to design a web app that functions as a simple thesaurus : a long list of words with attributes, all of which are linked to each other. Wikipedia defines it as: In Information Science, Library Science, and Information Technology, specialized thesauri are designed for information retrieval. They are a type of controlled vocabulary, for indexing or tagging purposes. Such a thesaurus can be used as the basis of an index for online material. The Art and Architecture Thesaurus, for example, is used to index the Canadian Information retrieval thesauri are formally organized so that existing relationships between concepts are made explicit. What database software, design or model would best fit this? Are PHP and MySQL good technologies to handle it?

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  • What is the usage of Splay Trees in the real world?

    - by Meena
    I decided to learn about balanced search trees, so I picked 2-3-4 and splay trees. What are the examples of splay trees usage in the real world? In this Cornell: http://www.cs.cornell.edu/courses/cs3110/2009fa/recitations/rec-splay.html I read that splay trees are 'A good example is a network router'. But from rest of the explanation seams like network routers use hash tables and not splay trees since the lookup time is constant instead of O(log n).

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  • Overriding GetHashCode in a mutable struct - What NOT to do?

    - by Kyle Baran
    I am using the XNA Framework to make a learning project. It has a Point struct which exposes an X and Y value; for the purpose of optimization, it breaks the rules for proper struct design, since its a mutable struct. As Marc Gravell, John Skeet, and Eric Lippert point out in their respective posts about GetHashCode() (which Point overrides), this is a rather bad thing, since if an object's values change while its contained in a hashmap (ie, LINQ queries), it can become "lost". However, I am making my own Point3D struct, following the design of Point as a guideline. Thus, it too is a mutable struct which overrides GetHashCode(). The only difference is that mine exposes and int for X, Y, and Z values, but is fundamentally the same. The signatures are below: public struct Point3D : IEquatable<Point3D> { public int X; public int Y; public int Z; public static bool operator !=(Point3D a, Point3D b) { } public static bool operator ==(Point3D a, Point3D b) { } public Point3D Zero { get; } public override int GetHashCode() { } public override bool Equals(object obj) { } public bool Equals(Point3D other) { } public override string ToString() { } } I have tried to break my struct in the way they describe, namely by storing it in a List<Point3D>, as well as changing the value via a method using ref, but I did not encounter they behavior they warn about (maybe a pointer might allow me to break it?). Am I being too cautious in my approach, or should I be okay to use it as is?

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  • Data binding in an ASP.Net application with Entity Framework

    - by nikolaosk
    This is going to be the eighth post of a series of posts regarding ASP.Net and the Entity Framework and how we can use Entity Framework to access our datastore. You can find the first one here , the second one here , the third one here , the fourth one here , the fifth one here ,the sixth one here and the seventh one here . I have a post regarding ASP.Net and EntityDataSource . You can read it here .I have 3 more posts on Profiling Entity Framework applications. You can have a look at them here ...(read more)

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  • Add logo background color to data returned by StackAuth sites route

    - by Yi Jiang
    Given that now with Stack Exchange 2.0 the logo of some of the sites, like Web Apps, AskUbuntu, Photography, Gaming and Pro Webmasters have non-white background, I think it will be best if the StackAuth sites route can include the preferred background color for those the logo of these sites. This is especially important for sites like Photography whose logo is unreadable if the traditional white is used. Edit: Here's an example of what I mean here: As you can see, the AskUbuntu logo text totally invisible against a white background.

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  • Indesign Import XML into Automatic Page generation, data merge

    - by taudep
    I've created some InDesign Pages that I want to use as templates. I've created an XML file with all the appropriate data. I want to merge the XML data with the InDesign page and have a few hundred pages automatically generated. I've been reading online and working with InDesign's "Import XML" features without any luck. The documentation has been pretty poor for me. And Google searches haven't returned much fruitful. Here are my present steps: I create a Master Page of my template I add a bunch of text frames where I want the imported data from the XML file to be places I open the "Tags" window and Import and XML file I mark my text frames in the Master Document with the appropriate tags I then add a lot of pages (like 200) to the document Then I use "Import XML" to try and get the data brought in and filled across all 200 pages. This is where I fail. There's something I'm missing. It might be that InDesign doesn't work as I'm expecting... Does anyone have any good tips for mail-merge like functionality with an XML document and auto-generation of InDesign pages? By the way, here's an example of Adobe's great documentation for merging repeated XML elements. There's got to be more... InDesign CS4 Docs: XML-Importing XML-Working with Repeating Data Here's some of the sample XML, notice the ITEM will repeat. I've also truncated the data in the "desc" tag: <output> <item> <user_name>taude</user_name> <date>2009-02-21</date> <title>Wishful Thinking</title> <desc>Skiing up in Vermont on a beautiful day. This photo of</desc> <thumbnail>http://www.blipfoto.com/thumbs/5371/2009/big/color/96104200949a162672e1996.15963073.jpeg</thumbnail> </item> <item> <user_name>taude</user_name> <date>2009-02-22</date> <title>Skiing Self Portrait</title> <desc>I was inspired by ML's self-portrait while </desc> <thumbnail>http://www.blipfoto.com/thumbs/5371/2009/big/color/36547696749a2c5782308e0.91477014.jpeg</thumbnail> </item> </output> Here's what my imported XML looks like with the InDesign Structure:

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  • Linux & Windows Boot Up Times in Amazon Web Service and Windows Azure

    - by Adron
    I've been working with Windows Azure and Amazon Web Services EC2 for a good many months now (almost getting to the years range) and I've seen something over and over that seems troubling. With AWS & Linux I commonly get instance startup times with EC2 around the 1-3 minute range. With AWS & Windows OS on an EC2 instance it often takes 10-20 minutes. With Windows Azure Web or Service Role I often get anywhere from 6-30 minutes waiting for a role to startup. I assume of course this involves booting up a windows instance somewhere in the fabric. I know there has always been tons of FUD about windows vs. Linux, but I'd really like to know why it is that Windows 08 or 03 boots so much slower in the cloud than Linux. Any specific technical information regarding this would be greatly appreciated! Thanks.

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  • "chown mysql:mysql /data/tmp" command

    - by Mellon
    I am on a Linux ubuntu machine with MySQL installed. If there is a MySQL installation on a Ubuntu machine, I saw some people doing the following thing: sudo chown mysql:mysql /data/tmp I get confused, I know the meaning of the above command, which is to change the owner of /data/tmp to user 'mysql' and change the group of it to 'mysql' group. But (my questions): 1. Why would one run the above command? If I create a table in my_db database, by default, there will be .frm, .MYD, and .MYI files (data files) be created automatically by MySQL under /var/lib/mysql/my_db/ . So, does the above command changes the default MySQL data directory to /data/tmp/ instead of /var/lib/mysql/my_db/? Basically, I would like to know the purpose and effect of the above command. (better with examples) 2. Where does the 'mysql' owner and group come from? Does the installation of MySQL on a Linux machine automatically create the 'mysql' user and group? or People need to manually create a mysql account for the linux machine?

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  • SQL Windowing screencast session for Cuppa Corner - rolling totals, data cleansing

    - by tonyrogerson
    In this 10 minute screencast I go through the basics of what I term windowing, which is basically the technique of filtering to a set of rows given a specific value, for instance a Sub-Query that aggregates or a join that returns more than just one row (for instance on a one to one relationship). http://sqlserverfaq.com/content/SQL-Basic-Windowing-using-Joins.aspx SQL below... USE tempdb go CREATE TABLE RollingTotals_Nesting ( client_id int not null, transaction_date date not null, transaction_amount...(read more)

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  • Apache doesn't start on Windows XP Professional SP3

    - by Justin Edwards
    I have XAMPP installed on my PC, and it works fine. Every service starts fine except Apache. I went to Services in Administrative Tools, and tried to start it from there, without success. I tried XAMPP Shell to run Apache by typing: xampp_cli start apache. That didn't work, either. I also tried reinstallling XAMPP, turning my computer off/on, restoring the registry from when I first installed XAMPP when Apache worked but still, nothing changed. Any ideas as to what could be causing this problem?

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  • Creating an Entity Data Model using the Model First approach

    - by nikolaosk
    This is going to be the second post of a series of posts regarding Entity Framework and how we can use Entity Framework version 4.0 new features. You can read the first post here . In order to follow along you must have some knowledge of C# and know what an ORM system is and what kind of problems Entity Framework addresses.It will be handy to know how to work inside the Visual Studio 2010 IDE . I have a post regarding ASP.Net and EntityDataSource . You can read it here .I have 3 more posts on Profiling...(read more)

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  • Internet Explorer 10 (Metro App) on Windows 8 Pro (RTM) crash

    - by ferpaz
    Internet Explorer 10 (Metro App) on Windows 8 Pro (RTM) does not start and crash with this error: Log Name: Application Source: Application Error Date: 27/08/2012 19:21:29 Event ID: 1000 Task Category: (100) Level: Error Keywords: Classic User: N/A Computer: DELL-OPE3.red.aseinfo.com.sv Description: Faulting application name: iexplore.exe, version: 10.0.9200.16384, time stamp: 0x50107ebe Faulting module name: iertutil.dll, version: 10.0.9200.16384, time stamp: 0x50109c90 Exception code: 0xc0000005 Fault offset: 0x0000000000172f0b Faulting process id: 0xadc Faulting application start time: 0x01cd84bb737cfa16 Faulting application path: C:\Program Files\Internet Explorer\iexplore.exe Faulting module path: C:\WINDOWS\system32\iertutil.dll Report Id: b1597df3-f0ae-11e1-be78-88532e15da73 Faulting package full name: Faulting package-relative application ID: Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Application Error" /> <EventID Qualifiers="0">1000</EventID> <Level>2</Level> <Task>100</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2012-08-28T01:21:29.000000000Z" /> <EventRecordID>7612</EventRecordID> <Channel>Application</Channel> <Computer>DELL-OPE3.red.aseinfo.com.sv</Computer> <Security /> </System> <EventData> <Data>iexplore.exe</Data> <Data>10.0.9200.16384</Data> <Data>50107ebe</Data> <Data>iertutil.dll</Data> <Data>10.0.9200.16384</Data> <Data>50109c90</Data> <Data>c0000005</Data> <Data>0000000000172f0b</Data> <Data>adc</Data> <Data>01cd84bb737cfa16</Data> <Data>C:\Program Files\Internet Explorer\iexplore.exe</Data> <Data>C:\WINDOWS\system32\iertutil.dll</Data> <Data>b1597df3-f0ae-11e1-be78-88532e15da73</Data> <Data> </Data> <Data> </Data> </EventData> </Event> Any suggestions?

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  • Ubuntu web server cluster checks Ubuntu repository for script updates with cron

    - by StuartTheY
    I have a cluster of Ubuntu 12.04 web servers running a lamp stack. All of these servers are connected to a Load Balancer on Amazon Web Services. What I want to be able to do is have a dedicated Ubuntu server that I can update the PHP files on and have the other web servers check with cron to get the updates files from the repository. They don't have to use cron but that was the only thing I could think of, unless there was a way to have the updated repository tell them that it has updated files. And then how to transfer those files. Also if there is a ways for a server to check for updated files when it boots because I am going to be using auto scaling on AWS so when there is an increase in the load and another server gets created I need it to download the updated files from the repository when launched. Not sure how to transfer files from server to server.

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  • MySql Data Loss - post mortem analysis - RackSpace Cloud Server

    - by marfarma
    After a recent 'emergency migration' of a RS cloud server, the mysql databases on our server snapshot image proved to be days out of date from the backup date. And yet files that were uploaded through the impacted webapp had been written to the file system. Related metadata that was written to the database was lost, but the files themselves were backed-up. Once I was able to manually access the mysql data files before the mysql server started (server was configured to start mysql on boot), I was able to see that the update time for ib_logfile1, ib_logfile0 and ibdata1 was days old. As with this poster, mysql data loss after server crash, it's as if some caching controller had told the OS / mysql server that it had committed data that was still in cache, and it was lost instead of flushed. I can't quite wrap my head around how the uploaded files got written but the database data did not. I would have thought that any cache would have flushed system wide, rather than process by process. Any suggestions as to how this might have happened?

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  • Jetzt geht’s los - speaking in Germany!

    - by Hugo Kornelis
    It feels just like yesterday that I went to Munich for the very first German edition of SQL Saturday – and it was a great event. An agenda that was packed with three tracks of great sessions, and lots of fun with the organization, attendees, and other speakers. That was such a great time that I didn’t have to hesitate long before deciding that I wanted to repeat this event this year. Especially when I heard that it will be held in Rheinland, on July 13 – that is a distance I can travel by car! The...(read more)

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