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  • Programming concepts taken from the arts and humanities

    - by Joey Adams
    After reading Paul Graham's essay Hackers and Painters and Joel Spolsky's Advice for Computer Science College Students, I think I've finally gotten it through my thick skull that I should not be loath to work hard in academic courses that aren't "programming" or "computer science" courses. To quote the former: I've found that the best sources of ideas are not the other fields that have the word "computer" in their names, but the other fields inhabited by makers. Painting has been a much richer source of ideas than the theory of computation. — Paul Graham, "Hackers and Painters" There are certainly other, much stronger reasons to work hard in the "boring" classes. However, it'd also be neat to know that these classes may someday inspire me in programming. My question is: what are some specific examples where ideas from literature, art, humanities, philosophy, and other fields made their way into programming? In particular, ideas that weren't obviously applied the way they were meant to (like most math and domain-specific knowledge), but instead gave utterance or inspiration to a program's design and choice of names. Good examples: The term endian comes from Gulliver's Travels by Tom Swift (see here), where it refers to the trivial matter of which side people crack open their eggs. The terms journal and transaction refer to nearly identical concepts in both filesystem design and double-entry bookkeeping (financial accounting). mkfs.ext2 even says: Writing superblocks and filesystem accounting information: done Off-topic: Learning to write English well is important, as it enables a programmer to document and evangelize his/her software, as well as appear competent to other programmers online. Trigonometry is used in 2D and 3D games to implement rotation and direction aspects. Knowing finance will come in handy if you want to write an accounting package. Knowing XYZ will come in handy if you want to write an XYZ package. Arguably on-topic: The Monad class in Haskell is based on a concept by the same name from category theory. Actually, Monads in Haskell are monads in the category of Haskell types and functions. Whatever that means...

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  • Silverlight Cream for April 24, 2010 -- #846

    - by Dave Campbell
    In this Issue: Michael Washington, Timmy Kokke, Pete Brown, Paul Yanez, Emil Stoychev, Jeremy Likness, and Pavan Podila. Shoutouts: If you've got some time to spend, the User Experience Kit is packed with info: User Experience Kit, and just plain fun to navigate ... thanks Scott Barnes for reminding me about it! Jesse Liberty is looking for some help organizing and cataloging posts for a new project he's got going: Help Wanted Emil Stoychev posted Slides and demos from my talk on Silverlight 4 From SilverlightCream.com: Silverlight 4 Drag and Drop File Manager Michael Washington has a post up about a Silverlight Drag and Drop File Manager in MVVM, but a secondary important point about the post is that he and Alan Beasley followed strict Designer/Developer rules on this... you recognized Alan's ListBox didn't you? Changing CSS with jQuery syntax in Silverlight using jLight Timmy Kokke is using jLight as introduced in a prior post to interact with the DOM from Silverlight. Essential Silverlight and WPF Skills: The UI Thread, Dispatchers, Background Workers and Async Network Programming Pete Brown has a great backrounder up for WPF and Silverlight devs on threading and networking, good comments too so far. Fluid layout and Fullscreen in Silverlight Paul Yanez has a quick post and demo up on forcing full-screen with a fluid layout, all code included -- and it doesn't take much Data Binding in Silverlight Emil Stoychev has a great long tutorial up on DataBinding in Silverlight ... he hits all the major points with text, samples, and code... definitely one to read! Yet Another MVVM Locator Pattern Another not-necessarily Silverlight post from Jeremy Likness -- but definitely a good one on MVVM and locator patterns. The SpiderWebControl for Silverlight Pavan Podila has a 'SpiderWebControl' for Silverlight 4 up... this is a great network graph control with any sort of feature I can think of... check out the demo, then grab the code... or the other way around, your choice :) Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • SharePoint 2010 BDC Model Deployment Issue: “The default web application could not be determined.”

    - by Jan Tielens
    Yesterday I tried to deploy a Business Data Connectivity Model project created in Visual Studio 2010 to my SharePoint 2010 test server (all RTM versions), but during the deployment of the solution, SharePoint threw my following error: Add Solution:  Adding solution 'BCSDemo2.wsp'...  Deploying solution 'BCSDemo2.wsp'...Error occurred in deployment step 'Add Solution': The default web application could not be determined. Set the SiteUrl property in feature BCSDemo2_Feature1 to the URL of the desired site and retry activation.Parameter name: properties A little bit of searching on the internet taught me that I was not the only one having this issue, actually Paul Andrew describes how to solve it in this post. Although Paul describes what to do, his explanation is not, let’s say, very elaborate. :-) So let’s describe the steps a little bit more in detail: Create a new Business Data Connectivity Model project in Visual Studio 2010 and (optionally) implement all your code, change the model etc. When you try to deploy you get the error mentioned above. To fix it, in the Solution Explorer, navigate to and open the Feature1.Template.xml file (the name could be different if you decided to give your feature a different name of course). Add the following XML in the Feature element that’s already there (replace the Value with the URL of your site of course):  <Properties>    <Property Key='SiteUrl' Value='http://spf.u2ucourse.com'/>  </Properties>The resulting XML should look like:<?xml version="1.0" encoding="utf-8" ?><Feature xmlns="http://schemas.microsoft.com/sharepoint/">  <Properties>    <Property Key='SiteUrl' Value='http://spf.u2ucourse.com'/>  </Properties></Feature> Deploy the solution, now without any issues. :-) What happens now, is that when Visual Studio creates the SharePoint Solution (the WSP file), it will use the Feature template XML to generate the Feature manifest, which will now include the missing property.

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  • Oracle ACEs in the House

    - by Justin Kestelyn
    As is customary, the Oracle ACEs have invaded the Oracle Develop Conference agenda.Why? Because Oracle ACE-dom inherently is a stamp of not only expertise, but a unique ability to make that expertise useful to others. Plus, they're a group of "fine blokes" (UK. subjects, educate me: is that really a word?)Perhaps if you're not able to catch one of these sessions, you will be able to see the applicable ACE in action elsewhere, at a conference or user group meeting near you. Session ID Session Title Speaker, Company S313355 Developing Large Oracle Application Development Framework 11g Applications Andrejus Baranovskis, Red Samurai Consulting S316641 Xenogenetics for PL/SQL: Infusing with Java Best Practices and Design Patterns Lucas Jellema, AMIS; Alex Nuijten, AMIS S317171 Building Secure Multimedia Web Applications: Tips and Techniques Marcel Kratochvil, Piction; Melliyal Annamalai, Oracle S315660 Database Applications Lifecycle Management Marcelo Ochoa, Facultad de Ciencias Exactas S315689 Building a High-Performance, Low-Bandwidth Web Architecture Paul Dorsey, Dulcian, Inc. S316003 Managing the Earthquake: Surviving Major Database Architecture Changes Paul Dorsey, Dulcian, Inc.; Michael Rosenblum, Dulcian, Inc. S314869 Introduction to Java: PL/SQL Developers Take Heart Peter Koletzke, Quovera S316184 Deploying Applications to Oracle WebLogic Server Using Oracle JDeveloper Peter Koletzke, Quovera; Duncan Mills, Oracle S316597 Using Collections in Oracle Application Express: The Definitive Intro Raj Mattamal, Niantic Systems, LLC S313382 Using Oracle Database 11g Release 2 in an Oracle Application Express Environment Roel Hartman, Logica S313757 Debugging with Oracle Application Express and Oracle SQL Developer Dimitri Gielis, Sumneva S313759 Using Oracle Application Express in Big Projects with Many Developers Dimitri Gielis, Sumneva S313982 Forms2Future: The Ongoing Journey into the Future for Oracle-Based Organizations Lucas Jellema, AMIS; Peter Ebell, AMIS

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  • ArchBeat Link-o-Rama for 2012-10-09

    - by Bob Rhubart
    SOA Suite create partition in Enterprise Manager | Peter Paul van de Beek "In Oracle SOA Suite 10g, or more specific BPEL 10g, one could group functionality in domains," says Peter Paul van de Beek. "This feature has been away in the early versions of SOA Suite 11g. They have returned in more recent version and can be used for all SCA composites (instead of BPEL only). Nowadays these 10g domains are called partitions." OOW12: Oracle Business Process Management/Oracle ADF Integration Best Practices | Andrejus Baranovskis The Oracle OpenWorld presentations keep coming! Oracle ACE Director Andrejus Baranovskis shares the slides from "Oracle Business Process Management/Oracle ADF Integration Best Practices," co-presented with Danilo Schmiedel from Opitz Consulting. My presentations at Oracle Open World 2012 | Guido Schmutz The list of #OOW participants sharing their presentations grows with this post from Oracle ACE Director Guido Schmutz. You'll find Slideshare links to his presentations "Oracle Fusion Middleware Live Application Development (UGF10464)" and "Effective Fault handling in SOA Suite 11g (CON4832)." HTML Manifest for Content Folios | Kyle Hatlestad Kyle Hatlestad, solutions architect with the Oracle Fusion Middleware A-Team, shares the details on "a project to create a custom content folio renderer in WebCenter Content." Adaptive ADF/WebCenter template for the iPad | Maiko Rocha Oracle Fusion Middleware A-Team member Maiko Rocha responds to a a customer request for information about how to create an adaptive iPad template for their WebCenter Portal application, "a specific template to streamline their workflow on the iPad." Thought for the Day "I loved logic, math, computer programming. I loved systems and logic approaches. And so I just figured architecture is this perfect combination." — Maya Lin Source: Brainy Quote

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  • One Does Like To Code: DevoxxUK

    - by Tori Wieldt
    What's happening at Devoxx UK? I'll be talking to Rock Star speakers, Community leaders, authors, JSR leads and more.  This video is a short introduction.   Check out these great sessions: Thursday, June 12Perchance to Stream with Java 8by Paul Sandoz13:40 - 14:30 | Room 1 Making the Internet-of-Things a Reality with Embedded Javaby Simon Ritter11:50 - 12:40 | Room 4 Java SE 8 Lambdas and Streams Labby Simon Ritter17:00 - 20:00 | Room Mezzanine Safety Not Guaranteed: Sun. Misc. Unsafe and the Quest for Safe Alternativesby Paul Sandoz18:45 - 19:45 | Room 3 Join the Java EvolutionHeather VanCuraPatrick Curran19:45 – 20:45 | Room 2  Glassfish is Here to StayDavid DelabasseeAntonio Goncalves19:45 – 20:45 | Room Expo Here is the full line-up of sessions. Devoxx UK includes a Hackergarten, where can devs work an Open Source project of their choice. The Adopt OpenJDK and Adopt a JSR Program folks will be there to help attendees contribute back to Java SE and Java EE itself!   Saturday includes a special Devoxx4Kids event in conjunction with the London Java Community. It's design to teach 10-16 year-olds simple programming concepts, robotics, electronics, and games making. Workshops include LEGO Mindstorms (robotic engineering), Greenfoot (programming), Arduino (electronics), Scratch (games making), Minecraft Modding (game hacking) and NAO (robotic programming). Small fee, you must register. If you can't attend Devoxx UK in person, stay tuned to the YouTube/Java channel. I'll be doing plenty of interviews so you can join the fun from around the world. 

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  • Robots &amp; Pencils Bring iOS Dev Camp/Dev School to Winnipeg

    - by D'Arcy Lussier
    My buddy Paul Thorsteinson from Robots and Pencils has come up with an elaborate way to collect his Mac power adaptor that I keep forgetting to mail to him – he’s coming to town with Jonathan Rasmusson to run an iPhone Dev Camp and two-day Dev School here in Winnipeg! From the email he sent me: We are going to be bringing our successful iOS dev school out to the 'Peg in October as well has hosting a dev camp on the Friday night (comparable to a .net user group type deal).  If you know any peeps in Manitoba who are interested in these, please pass along!  .Net developers are welcome to come and heckle as well ;) Winnipeg iPhone Dev Camp October 26th Marlborough Hotel, 5:30pm Cost: $10 http://ios-dev-camp-winnipeg-eorg.eventbrite.com/ ^for devs of any level interested in meeting other devs hearing talks of all levels.  Food and networking Winnipeg iPhone Dev School October 27th, 28th, Marlborough Hotel Cost: $899 + GST http://academy.robotsandpencils.com/training ^For devs looking to get their feet wet in iOS dev Paul has spoken at Prairie Dev Con before and is vastly knowledgeable in mobile development. You can see his work in Spy vs Spy, Catch the Princess, World Explorer for Minecraft, Deco Windshield (yes they run their entire business on their iPad), Anthm, Own This World and too many other apps. If you’re into iOS development, looking to get in, or wanting to improve your skills, consider these great professional development opportunities! D

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  • What's the syntax to add a calendar reminder from Google Command Line?

    - by Traveling Tech Guy
    I've been using googlecl successfully to add events to my calendar. Things like: google calendar add "call Paul tomorrow at 8:30am" work great, and add the appropriate event t the right time. But no reminder is added for the event. I tried: google calendar add "call Paul tomorrow at 8:30am reminder 10 minutes" and other combinations. It just ends up adding the "reminder" instruction to the event description. What's the syntax I should use to add a, let's say, 10 minutes pop-up reminder? Thanks

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  • Outlook 2011 Contact Import from CSV with Notes containing new lines / cr / lf

    - by Paul Hargreaves
    I'm trying to import several thousand contacts into Outlook 2011 for Mac. Everything is working well except the Notes field as I cannot figure out how to get new lines / carriage returns into it. There is no documentation for the exact format that Outlook supports. After searching the web and experimenting I have tried: Creating a single contact in Outlook with Notes containing several lines of text. I then export the contact to a csv, deleting the contact in Outlook, then re-import. All lines in Notes merge together :-/ Following tips I found such as containing new lines around quotes. e.g. http://creativyst.com/Doc/Articles/CSV/CSV01.htm (search for line-break) Switching the CSV format from DOS to Unix, experimenting using manually injected ctrl-characters such as ^M etc. I would include an example export/import but unfortunately the the new breaks included do not work well in a SU code block.

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  • Powerpoint missing from DCOM config

    - by Paul Prewett
    I have an application that automates the creation of powerpoint files in an ASP.NET environment. This requires that I install powerpoint on the server and also set permissions in the DCOM configuration snap-in (dcomcnfg) to give permissions to the launching user ([DOMAIN]\ASPNET in this case) to run the application. I have this setup running successfully on several Win2k3 machines. I am configuring my first Win2k8 machine and after installing powerpoint on the server, the "Microsoft Powerpoint Presentation" node in DCOM config is not showing up. Other installed Office apps are showing (Excel, Graph, etc...), just not Powerpoint. So when I attempt to run the application, I get an "Access denied" error, which is exactly what I would expect. The user doesn't have permission. Therefore, access denied. The specific error log entry is: The machine-default permission settings do not grant Local Activation permission for the COM Server application with CLSID {91493441-5A91-11CF-8700-00AA0060263B} to the user [DOMAIN]\ASPNET I searched the entire list for the CLSID, too, thinking maybe the name wasn't loading properly. No dice. I also re-ran the setup program for Office thinking maybe there would be some option or something I unchecked in the custom setup options, but I saw nothing that looked helpful. I'm flummoxed. Can anyone out there suggest something to help me get Powerpoint to show up in the list of DCOM applications? Many thanks.

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  • ssh + tinyproxy: poor performance

    - by Paul
    I am currently in China and I would like to still visit some blocked websites (facebook, youtube). I have VPS in the USA and I have installed tinyproxy on it. I log in on my VPS with SSH port-forwarding and I have configured my browser appropriately. Everything works more or less: I can surf to those websites but everything is inusually slow and sometimes data transfer stops abruptly. This probably has to do with the fact that I see some errors in my shell on the VPS like : channel 6: open failed: connect failed: Also in the log-file of tinyproxy I see some bad things: ERROR Sep 06 14:52:14 [28150]: getpeer_information: getpeername() error: Transport endpoint is not connected ERROR Sep 06 14:52:15 [28153]: writebuff: write() error "Connection reset by peer" on file descriptor 7 ERROR Sep 06 14:52:15 [28168]: readbuff: recv() error "Connection reset by peer" on file descriptor 7 ERROR Sep 06 14:52:15 [28151]: readbuff: recv() error "Connection reset by peer" on file descriptor 7 ERROR Sep 06 14:52:15 [28143]: readbuff: recv() error "Connection reset by peer" on file descriptor 7 ERROR Sep 06 14:52:17 [28147]: writebuff: write() error "Connection reset by peer" on file descriptor 7 ERROR Sep 06 14:52:23 [28137]: writebuff: write() error "Connection reset by peer" on file descriptor 7 ERROR Sep 06 14:52:26 [28168]: getpeer_information: getpeername() error: Transport endpoint is not connected ERROR Sep 06 14:52:27 [28186]: read_request_line: Client (file descriptor: 7) closed socket before read. ERROR Sep 06 14:52:31 [28160]: getpeer_information: getpeername() error: Transport endpoint is not connected

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  • Name resolution for the name <name> timed out after none of the configured DNS servers responded.

    - by Paul Brown
    Installed Windows 7 (previously ran XP and Vista with no problems) a couple of weeks ago and I'm at least once a day getting the above error show up in the event logs and losing all internet connection. The only current way to resolve it is to reboot my cable modem. My ISP have been running diagnostics on it and tell me there is no problem whatsoever. I've configured my router (and PC on occasion) to point at OpenDNS - still occurs. I've had the PC directly connected to the modem - still occurs. If I can give more info that might of use please ask thanks Update: After moaning at my ISP for a couple of weeks (VirginMedia) they agreed to send me out a new cable modem ... and I've not had the issue since.

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  • Can't get Postfix Admin to use Dovecot password hashing

    - by Paul
    I'm setting up Postfix Admin 2.91 and trying to use dovecot:SHA512-CRYPT for password hashing. In config.inc.php I have set: // dovecot:CRYPT-METHOD = use dovecotpw -s 'CRYPT-METHOD'. Example: dovecot:CRAM-MD5 // (WARNING: don't use dovecot:* methods that include the username in the hash - you won't be able to login to PostfixAdmin in this case) $CONF['encrypt'] = 'dovecot:SHA512-CRYPT'; // If you use the dovecot encryption method: where is the dovecotpw binary located? // for dovecot 1.x // $CONF['dovecotpw'] = "/usr/sbin/dovecotpw"; // for dovecot 2.x (dovecot 2.0.0 - 2.0.7 is not supported!) $CONF['dovecotpw'] = "/usr/sbin/doveadm pw"; I have also tried SHA256-CRYPT and MD5-CRYPT with same results (as I understand it, these do not include usernames in the hash) In running setup.php, I get the following message when trying to create an admin account: can't encrypt password with dovecotpw, see error log for details Server error log reports: 1624#0: *6 FastCGI sent in stderr: "PHP message: dovecotpw password encryption failed. PHP message: STDERR output: sh: 1: /usr/sbin/doveadm: not found" while reading response header from upstream <...> upstream: "fastcgi://unix:/var/run/php5-fpm.sock:" <...> A couple quick checks: # ll /usr/sbin/doveadm -rwxr-xr-x 1 root root 423264 Feb 13 23:23 /usr/bin/doveadm* # doveadm pw -l CRYPT MD5 MD5-CRYPT SHA SHA1 SHA256 SHA512 SMD5 SSHA SSHA256 SSHA512 PLAIN CLEAR CLEARTEXT PLAIN-TRUNC CRAM-MD5 SCRAM-SHA-1 HMAC-MD5 DIGEST-MD5 PLAIN-MD4 PLAIN-MD5 LDAP-MD5 LANMAN NTLM OTP SKEY RPA SHA256-CRYPT SHA512-CRYPT # doveadmin pw -s SHA512-CRYPT Enter new password: Retype new password: {SHA512-CRYPT}$6$<long string here>/ Using Dovecot 2.2, PHP 5.5, MariaDB 10, Postfix 2.11, nginx 1.6.0, Ubuntu 12.04.

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  • Pain removing a perl rootkit

    - by paul.ago
    So, we host a geoservice webserver thing at the office. Someone apparently broke into this box (probably via ftp or ssh), and put some kind of irc-managed rootkit thing. Now I'm trying to clean the whole thing up, I found the process pid who tries to connect via irc, but i can't figure out who's the invoking process (already looked with ps, pstree, lsof) The process is a perl script owned by www user, but ps aux |grep displays a fake file path on the last column. Is there another way to trace that pid and catch the invoker? Forgot to mention: the kernel is 2.6.23, which is exploitable to become root, but I can't touch this machine too much, so I can't upgrade the kernel EDIT: lsof might help: lsof -p 9481 COMMAND PID USER FD TYPE DEVICE SIZE NODE NAMEss perl 9481 www cwd DIR 8,2 608 2 /ss perl 9481 www rtd DIR 8,2 608 2 /ss perl 9481 www txt REG 8,2 1168928 38385 /usr/bin/perl5.8.8ss perl 9481 www mem REG 8,2 135348 23286 /lib64/ld-2.5.soss perl 9481 www mem REG 8,2 103711 23295 /lib64/libnsl-2.5.soss perl 9481 www mem REG 8,2 19112 23292 /lib64/libdl-2.5.soss perl 9481 www mem REG 8,2 586243 23293 /lib64/libm-2.5.soss perl 9481 www mem REG 8,2 27041 23291 /lib64/libcrypt-2.5.soss perl 9481 www mem REG 8,2 14262 23307 /lib64/libutil-2.5.soss perl 9481 www mem REG 8,2 128642 23303 /lib64/libpthread-2.5.soss perl 9481 www mem REG 8,2 1602809 23289 /lib64/libc-2.5.soss perl 9481 www mem REG 8,2 19256 38662 /usr/lib64/perl5/5.8.8/x86_64-linux-threa d-multi/auto/IO/IO.soss perl 9481 www mem REG 8,2 21328 38877 /usr/lib64/perl5/5.8.8/x86_64-linux-threa d-multi/auto/Socket/Socket.soss perl 9481 www mem REG 8,2 52512 23298 /lib64/libnss_files-2.5.soss perl 9481 www 0r FIFO 0,5 1068892 pipess perl 9481 www 1w FIFO 0,5 1071920 pipess perl 9481 www 2w FIFO 0,5 1068894 pipess perl 9481 www 3u IPv4 130646198 TCP 192.168.90.7:60321-www.**.net:ircd (SYN_SENT)

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  • Using unixODBC to connect to Oracle server

    - by Paul
    I am trying to configure our web server (RHEL 5.4 x86) to connect to an Oracle database using unixODBC. I have installed unixODBC-2.2.11-7.1.1, which yum tells me is the latest version. I have also installed the Oracle InstantClient 11.2 and the Oracle InstantClient ODBC library. I have symlinked the all the .so files in /usr/lib/oracle/11.2/client/lib to /usr/lib. I have set $LD_LIBRARY_PATH to /usr/lib/, $ORACLE_HOME to /usr/lib/oracle and $TNS_ADMIN to the directory containing my (valid) Tnsnames.ora file. Here are the contents of my /etc/odbcinst.ini file: [Oracle] Description = Oracle ODBC Connection Driver = /usr/lib/libsqora.so.11.1 Setup = FileUsage = and my /etc/odbc.ini file: [Oracle] Application Attributes = T Attributes = W BatchAutocommitMode = IfAllSuccessful CloseCursor = F DisableDPM = F DisableMTS = T Driver = Oracle EXECSchemaOpt = EXECSyntax = T Failover = T FailoverDelay = 10 FailoverRetryCount = 10 FetchBufferSize = 64000 ForceWCHAR = F Lobs = T Longs = T MetadataIdDefault = F QueryTimeout = T ResultSets = T ServerName = //<host>:<port>/<db> SQLGetData extensions = F Translation DLL = Translation Option = 0 UserID = (ServerName has been edited...host, port, and db are actually there, and correct) When I run isql I get $ isql -v Oracle isql: symbol lookup error: /usr/lib/libsqora.so.11.1: undefined symbol: SQLGetPrivateProfileStringW And running dltest gives me $ dltest Oracle SQLConnect [dltest] ERROR dlopen: Oracle: cannot open shared object file: No such file or directory If anyone has any insights I would be grateful, I've been trying to get this to connect for about 5 hours now... I am going home for the night, but will gladly provide more details, if necessary, tomorrow morning, to anyone willing to help...

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  • Windows Server 2003 - Handling hundreds of simultaneous downloads

    - by Paul Hinett
    At the moment I have a single server with 4 1TB hard disks, daily I haver over 150 MP3 music files uploaded (around 80mb each). At busy periods there is over 300 people streaming / downloading these mixes all at once, 75% of the activity is on the most recently uploaded stuff which is all on a single hard disk. My read speads on the hard disk are very low due to such high activity of 200+ reads all happening at the same time on a single hard disk (ran some tests with HDTach). What would be a logical solution to solve this, a couple of ideas I had are: Load balance with another server Install faster hard disks (what are best these days? SCSI / SATA) Spread the most accessed files over the 4 drives so it is sharing the load between all 4 disks, instead of all the most accessed (most recent) all on the most recently installed drive. Obviouslly load balance is the most expensive option, but would it dramatically help? Some help on this situation would be great!

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  • System State Backups using NTbackup fail with error 0x800423f4 (relating to volume shadow copy)

    - by Paul Zimmerman
    We have a Windows Server 2003 R2 running Service Pack 2. It is a domain controller (Global Catalog) and our main internal DNS server. We run a System State backup of the machine to back up Active Directory information and save the backup to a different server. This server has a single drive (C:), and we do have Shadow Copies enabled for the volume (which are completing successfully). The System State Backup is now failing with the following listed in the backup logs: Volume shadow copy creation: Attempt 1. "Event Log Writer" has reported an error 0x800423f4. This is part of System State. The backup cannot continue. Error returned while creating the volume shadow copy:800423f4 Aborting Backup. The operation did not successfully complete. When doing a vssadmin list writers, we sometimes get the following reported for the Event Log Writer (other times it says that it is in the state of "[1] Stable" with "No error"): Writer name: 'Event Log Writer' Writer Id: {eee8c692-67ed-4250-8d86-390603070d00} Writer Instance Id: {c7194e96-868a-49e5-ba99-89b61977753c} State: [8] Failed Last error: Retryable error We have tried disabling the event log service via the registry, rebooting, deleting the event log files from the drive, then re-enabling the service via the registry and rebooting, but this didn't seem to solve the issue. We also get an error message when in the event viewer when trying to open the log for the "File Replication Service" of "Unable to complete the operation on 'File Replication Service'. The security descriptor structure is invalid." I have searched the error via Google and tried a number of different things, but nothing has seemed to help. Any suggestions on what we might try to get the Event Log Writer to behave would be greatly appreciated!

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  • Xen won't start after it had been working

    - by Paul Tomblin
    I've been setting up this Debian Stable system with a dom0 and 3 domUs. It was working fine for several days, and I'm almost ready to deploy it to the rack. But last night I shut it down with all three domUs still running for the first time, and today when I started it up, xend won't start. In /var/log/messages, I have: Apr 18 13:01:33 xen-test BLKTAPCTRL[4248]: blktapctrl: v1.0.0 Apr 18 13:01:33 xen-test BLKTAPCTRL[4248]: Found driver: [raw image (aio)] Apr 18 13:01:33 xen-test BLKTAPCTRL[4248]: Found driver: [raw image (sync)] Apr 18 13:01:33 xen-test BLKTAPCTRL[4248]: Found driver: [vmware image (vmdk)] Apr 18 13:01:33 xen-test BLKTAPCTRL[4248]: Found driver: [ramdisk image (ram)] Apr 18 13:01:33 xen-test BLKTAPCTRL[4248]: Found driver: [qcow disk (qcow)] Apr 18 13:01:33 xen-test BLKTAPCTRL[4248]: couldn't find device number for 'blktap0' Apr 18 13:01:33 xen-test BLKTAPCTRL[4248]: Unable to start blktapctrl and in /var/log/xen/xend.log, I have this: [2010-04-18 12:46:32 3523] INFO (SrvDaemon:219) Xend exited with status 1. [2010-04-18 13:01:34 4255] INFO (SrvDaemon:331) Xend Daemon started [2010-04-18 13:01:34 4255] INFO (SrvDaemon:335) Xend changeset: unavailable. [2010-04-18 13:01:34 4255] INFO (SrvDaemon:342) Xend version: Unknown. [2010-04-18 13:01:34 4255] ERROR (SrvDaemon:353) Exception starting xend (no element found: line 1, column 0) Traceback (most recent call last): File "/usr/lib/xen-3.2-1/lib/python/xen/xend/server/SrvDaemon.py", line 345, in run servers = SrvServer.create() File "/usr/lib/xen-3.2-1/lib/python/xen/xend/server/SrvServer.py", line 251, in create root.putChild('xend', SrvRoot()) File "/usr/lib/xen-3.2-1/lib/python/xen/xend/server/SrvRoot.py", line 40, in __init__ self.get(name) File "/usr/lib/xen-3.2-1/lib/python/xen/web/SrvDir.py", line 82, in get val = val.getobj() File "/usr/lib/xen-3.2-1/lib/python/xen/web/SrvDir.py", line 52, in getobj File "/usr/lib/xen-3.2-1/lib/python/xen/xend/server/SrvNode.py", line 30, in _ _init__ self.xn = XendNode.instance() File "/usr/lib/xen-3.2-1/lib/python/xen/xend/XendNode.py", line 709, in instance inst = XendNode() File "/usr/lib/xen-3.2-1/lib/python/xen/xend/XendNode.py", line 164, in __init__ saved_pifs = self.state_store.load_state('pif') File "/usr/lib/xen-3.2-1/lib/python/xen/xend/XendStateStore.py", line 104, in load_state dom = minidom.parse(xml_path) File "/usr/lib/python2.5/xml/dom/minidom.py", line 1915, in parse return expatbuilder.parse(file) File "/usr/lib/python2.5/xml/dom/expatbuilder.py", line 924, in parse result = builder.parseFile(fp) File "/usr/lib/python2.5/xml/dom/expatbuilder.py", line 211, in parseFile parser.Parse("", True) ExpatError: no element found: line 1, column 0 [2010-04-18 13:01:34 4253] INFO (SrvDaemon:219) Xend exited with status 1. Any clues as to what might be going wrong?

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  • Wifi connection issues for Android with Linksys WRT54G

    - by Paul
    I have had this Linksys WRT54G for many years now, and it has always worked without a hassle. But for some reason I am unable to connect my brand new Android phone (Magic). The wireless network is broadcast and simply secured using WPA PSK TKIP. My phone sees the network (with excellent signal strength) and correctly asks me for the WPA password. Then when it tries to connect it stays for a while on "Retrieving address..." (liberately translated from Dutch) and finally fails reading "Remember, secured with WPA". Does anybody know how to solve this issue? edit: the android phone is genuine (not modified/rooted or whatsoever).

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  • ERROR 0x8007007A when trying to schedule a task

    - by Paul Hollingsworth
    I am getting the error "The data area passed to a system call is too small. (Exception from HRESULT: 0x8007007A)" when trying to create a scheduled task on a particular windows machine. The problem description is identical to that described in this Microsoft KB article I followed their steps to resolve: Stopped the task scheduler service (right-clicked "Task Scheduler" in the Services window from Control Panel and selected "Stop"). Restarted the task scheduler service Waited 15 minutes tried to schedule the task. But the error is persisting. To give more context of how we are creating these scheduled tasks, they are actually generated automatically from a configuration script (we run the script each time we wish to make a change). Each time this happens, it deletes all of the existing tasks and creates new ones. I don't know what else to try.... but surely there is some way to "reset" the task scheduler... How can I stop this error from happening.

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  • What is SMSISTUB (Win 16 Subsystem)?

    - by Paul Reiners
    This morning when I logged on to my work computer, I got the following "Application: SMSISTUB" message: The Win 16 Subsystem has insufficient resources to continue running. Click on OK, close your applications [I only had one application running at the time], and restart your machine. What the heck is this all about?

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  • Why can't I resize some virtual thick disks in VMWhare vSphere Client

    - by Paul-Jan
    Let me start off by mentioning I am really really new to this whole VMWare ESX/vSphere thing, so apologies if this is a FAQ or asked a million times before using better wording. Also, please correct me if I'm using the wrong terms all over the place. We just got this brand new VMWare EXS server, and we started importing virtual machines from around the office. Some of them were originally based on VMWare, others are converted from MS Virtual Server. One of these machines needs a bigger disk, but in the vSphere Client the disk size spinedit is disabled. Disk type is thick. However, for other machines, with the same disk type, the spinedit is enabled and I can happily resize their disks. So here is the question: why can't I resize this disk in particular? All machines are freshly converted, so I assume there are no snapshots yet, which I read would stop a resize from happening (again, correct me if I'm wrong).

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  • LSI 9211-8i won't boot in KVM

    - by Paul McMillan
    I'm running ubuntu 11.04 with an LSI 9211-8i in IT mode with the latest firmware (10). I'm using KVM with VT-d enabled to pass the entire PCIe device through to the guest OS. I have the device disabled in the system BIOS. When I boot my virtual machine, the adapter quits during bios initialization with the following error: Unable to load LSI Corporation MPT BIOS MPT BIOS Fault 0Ch encountered at adapter PCI(00h,04h,00h) Press any key to continue... I know the virtualization is correctly enabled. I've blacklisted the kernel modules in the host OS. Has anyone else encountered this error? I'm about out of ideas here. Edit: I contacted LSI tech support about this, and they suggested that I try RedHat and Xen. Apparently they don't test or support anything else.

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  • Configuring Fortigate OS4 for FTPS

    - by Paul
    I configured iis7 ftp to allow ssl connections. I set the ssl firewall to use ports 50000-50050. If I set up a custom service on my fortigate firewall for ftps with source ports 990-50050 and destination ports 990-50050, set it to a firewall policy and connect from a client it connects and works successfully. If I create a service FTPS Control with source port 990 and destination port 990 and another service,FTP Data with source ports 50000-50050 and destination ports 50000-50050 add them to a group FTPSSL, replace the ftps policy with FTPSSL and try connecting it tries to connect to port 990 and eventually times out. Is there a way to configure the service to only use the ports I need and not every port from 990 up?

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