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• Oracle Hangs on Responses Intermittently

  - by Ryan Cook

  I want to preface this with the fact that I am a developer and I am not even close to a DBA, plus I am new to Oracle. OK, here it goes: I have a Java application which uses spring and hibernate. Its a simple CRUD app and I will leave the details out as I don't think they are the issue. I have noticed that my app runs fine when I use MySql, but when I use an Oracle 10.2 server every 7th-10th hangs for 5-10 seconds. My Oracle installation was done by me using all defaults, same as the mysql install. I don't even know where to start looking. Any ideas? Thanks in advance and sorry that I lack the details that are most likely required for help.

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• Looking for a free or open-source burner emulator [closed]

  - by Jared Harley

  Possible Duplicate: Virtual CDR driver I am looking for a free or open-source virtual CD/DVD emulator to run in a Windows environment. What I want is similar to what SlySoft's Virtual Clone Drive or Daemon Tools provides, but the emulated drive needs to be a burner of some type. The burner should be able to save disc images (.iso, .ccd, etc) to my harddrive - basically, the same as if I burned the files to a CD-R, and then ripped them back to a disc image. I have already looked around some and come across 2 - DVD neXt COPY iTurns and NoteBurner M4P. Both of these programs create a virtual CD-RW drive, but they are integrated into their product (for burning from iTunes to create mp3 files) and cannot create disc images. I am currently writing a piece of software that will have the capability to burn disc images onto CDs/DVDs, and I don't want to end up with a 100 coasters while I'm testing my software. Anyone have any ideas? Related ServerFault queston: Create netbook recovery image without DVD burner (virtual burner?)

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• How GZipped contents are transfered on the web?

  - by PJ

  I heard that static contents like CSS and JavaScript can be better delivered in GZip format. And Content Developer Network (CDN) always does so. However I don't understand how the format works. First when I tried making a gzipped file via command-line. The file extension is .gz. This is different from .css and .js. How do browsers recognize which file is gzipped or not. Second, how browsers "decompress" files? I dragged my index.html.gz onto my browsers. But no one worked. How do such gzipped work in the real world? What do I need to do if I want to serve CSS/JavaScript using Gzipped format.

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• software to allow a friend to look on your screen

  - by acidzombie24

  I want a friend of mine to review my code. I have a mic built into my laptop but i can use another software for voice chat. So i would like to have him to either view my screen (taking control might be fine) or show me his screen so he can talk about a specific piece of code. What software is good for this? We both think about security so an MS product (netmeeting? if that still exist on normal msn live installs) or an open source would be preferred. Should be free.

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• Severe latency only on one machine and only when accessing intranet site

  - by Joe M.

  I have one desktop machine that is having consistently high latency only when trying to load a page from an intranet site. Using the Chrome Developer Tools, the site shows a "Waiting" time of 4-5 seconds each page load. Other machines have <50ms, and the problem machine loads regular internet sites with <1s latency, so the problem is only on one machine and only when accessing the intranet site. This is a small business and all the hosts are on 192.168.0.1/24 I would have suspected a connection issue with the problem machine but normal internet sites are not having latency. Then I would have looked at connection issues with the intranet web server but other machines are not having latency to it. What else can I look at to troubleshoot this?

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• Multi screen RDP in Windows 8.1 Enterprise

  - by bgs264

  I have just flattened my machine and installed Windows 8.1 Enterprise Edition. I have used the Hyper-V to create a virtual machine for my Software Development stuff, on my VM I have also installed Windows 8.1 Enterprise Edition. I want to have two screen support when using this VM (not using /span) Both the Hyper-V viewer and Remote Desktop give me a tickbox to "Use all my monitors for the remote session". However even with it ticked (and even when I tried the /multimon switch on the command line), I only get a single screen. Am I missing something - this should be supported in Enterprise edition, right? Is there some extra config I need to do on the RDP host? Forgive me if it's an obvious question, I'm more a developer and just stumbling through ;-) Cheers! Ben

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• Windows 7: Constant BSOD's and Laptop restarts

  - by Rogue

  This is the error that i get on restart: Problem signature: Problem Event Name: BlueScreen OS Version: 6.1.7600.2.0.0.256.1 Locale ID: 16393 Additional information about the problem: BCCode: d1 BCP1: 00000004 BCP2: 00000002 BCP3: 00000000 BCP4: 8B19301D OS Version: 6_1_7600 Service Pack: 0_0 Product: 256_1 Files that help describe the problem: C:\Windows\Minidump\032610-17487-01.dmp C:\Users\ForceOne\AppData\Local\Temp\WER-30591-0.sysdata.xml Read our privacy statement online: http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409 If the online privacy statement is not available, please read our privacy statement offline: C:\Windows\system32\en-US\erofflps.txt I'll upload the dump files if anyone wants them, anyone knws the solution to this? Extra Info: I have a Dell Inspiron 1525 with Windows 7

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• I need a relatively cheap host, which will be able to handle sudden peaks in traffic?

  - by Morten K

  Hello, We're launching a product in a few months, which will obviously have a website. Judging from our current traffic, we believe that overall traffic will probably not be that much, but we are aiming at promoting the site heavily using social media. This has the typical problem, that IF we get suddenly get picked up by a large tech blog, we will see a sudden burst: A very heavy increase in traffic all of the sudden. If we use a cheap charlie host as our current host is (www.unoeuro.com) or something similar like GoDaddy, I'm afraid that the site will go down under the load. If that happens, then we might as well have thrown our social media marketing dollars out of the window. Our site will be relatively lightweight, all videos hosted at Youtube or Vimeo and other than that mainly just a standard webpage (ie nothing too heavy). I am hoping for recommendations for a good hosting company, which has some form of scalable hosting, so if / when a traffic surge hits, the site will not go down.

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• php rsync with exec() not working

  - by mojeime

  Why this: rsync -avz -e ssh /home/userneme/folder [email protected]:/var/www/folder works from cronjob and this: exec("rsync -avz -e ssh /home/userneme/folder [email protected]:/var/www/folder"); doesn't work. I know exec is working because i have a few places in my appp that do convercion from pdf to jpg with ImageMagick (exec). SOLVED exec is working OK it was a permission issue on remote server. "Local" server is shared reseller account and remote server is my first VPS Ubuntu 10.10 LAMP box. If only I had a system administrator since i'm just a software developer forced to do this and i stink at it :) Thank You all!

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• Why do my proxy settings keep changing?

  - by tjrobinson

  I am running Windows 7 and a few times a day the "Use a proxy server for your LAN (These settings will not apply to dial-up of VPN connections)." under "Local Area Network (LAN) Settings" checkbox becomes checked seemingly on it's own. Am I pressing some kind of hidden keyboard shortcut accidentally? What sort of applications might alter this setting and why? Unfortunately as this is a developer box, there's a lot of stuff that could be interfering, e.g. Visual Studio 2010, Windows Azure SDK and various browsers. Has anyone else come across this?

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• Windows Server 2008: How to tell if a user is a 'local' use or a 'domain' user

  - by David

  I'm a developer, not a server admin, so please bear with me! I've been tasked with checking the installation of some software on a Windows Server 2008 R2 machine in the cloud, within two scenarios: There is no domain, the software will use local users and groups for authentication There is a domain, the software will use domain users and groups for authentication I've done part 1, but I'm puzzled about part 2. I've just installed the Active Directory Domain Services role on the server, so now I have a domain of one computer. When I look in Active Directory Users and Computers, I see all my original local users and groups. Have they now been 'promoted' to domain users? Or do I not have any domain users yet? Is there a way I can tell the difference between domain users and local users now? Thanks

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• How to scroll up and look at data in GNU screen

  - by dorelal

  I am using a mac (snow leopard). I am a ruby on rails developer and I watched a screencast on GNU screen and am trying it out. So far I like it. On a window when I start server I get to see the log messages. However I can't seem to scroll up. I do get a scroll bar. However when I use the scroll bar and scroll up I don't see anything. How do people use GNU screen and scroll up?

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• Is a matching entry in /etc/hosts required for hostname?

  - by JohnWoltman

  I was installing a Tomcat webapp that refused to work until I stumbled on someone else's issue with an unrelated product. The solution was to add the machine's name to /etc/hosts, to match the name returned by hostname. Is this required for general Linux networking to function correctly? My webapp is running in a virtual machine so that I can test the webapp, and I don't normally bother with the /etc/hosts file on VMs. I just shook my fist and cursed Tomcat and webapp's behavior. I read http://serverfault.com/questions/118823, but that doesn't say if it's required or not.

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• Installing Image Magick on Amazon EC2

  - by Kapil Sharma

  Well I'm a PHP developer who know few linux commands to get my job done. I need to launch a symfony 1.4 website on Amazon EC2. Everything is fine except IMagick. I magick is also installed through following command: sudo yum install ImageMagick Its php lib is not installed/configured, if that do not happen with above command. In PHP, I'm using IMagick, but script is failing on IMagick. I know problem is with PHP IMagic extention but dont know how to fix that. On dev box, its as simple as turning it on on WAMP. Can someone please suggest where should I look to confirm if IMagick PHP extention installed and configured correctly?

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• Home Server restore fails cannot find boot device

  - by Tim Heuer

  I am using Windows Home Server to backup my PCs. I recently had a hard drive failure on one of my WHS connected PCs and obtained an identical sized/speed drive for my laptop. I used the latest home server restore CD and did the restore. It said it completed successfully. Upon reboot, it says 'cannot find boot device' and lists all my drives (hard drive, cd, network book) indicating no valid operating system was found. I boot using the Win7 repair disk and while it doesn't see the operating system, it sees the drive and if I go into a command prompt, I can see all my data on the drive. My laptop is Windows 7 64-bit Ultimate. I've tried most everything I can think of. I'm a technical user (software developer) so I'm pretty aware of how things work (or should). I don't feel like I'm missing a simple step here.

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• How to increase signal/range of your Wi-Fi antenna-less repeater/booster over the network?

  - by kenorb

  I've BT Home Hub in the upper flat (2-3 walls behind) and I'm using WPS Wireless-N Wifi Range Router Repeater Extender in my flat where I'm using my laptop. These are antenna-less devices. Are there any life-hack tricks to increase signal/range of my repeater without buying the new more powerful repeater? I've tried already to move my repeater closer to the ceiling or putting the aluminium foil underneath, but it didn't help. Are there any methods, specific plates or materials which can boost the signal? Specification: Model: WN518W2 Frequency range: 2.4-2.4835GHz Wireless transmit power: 14 ~17 dBm (Typical) Wireless Signal Rates With Automatic Fallback: 11n: Up to 300Mbps(dynamic), 11g: Up to 54Mbps(dynamic), 11b: Up to 11Mbps(dynamic) Modulation Technology: DBPSK, DQPSK, CCK, OFDM, 16-QAM, 64-QAM Receiver Sensitivity: 300M: -68dBm@10% PER / 150M: -68dBm@10% PER / 108M: -68dBm@10% PER / 54M: -68dBm@10% PER / 11M: -85dBm@8% PER / 6M: -88dBm@10% PER / 1M: -90dBm@8% PER Product dimensions: 11 * 6 * 7cm

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• How to schedule daily backup in MSSQL Server 2008 Web Edition

  - by Xenon

  In MSSQL Management Studio I created a maintenance plan but it won't work Error is; "Message Executed as user: LITESPELL-19C34\Administrator. Microsoft (R) SQL Server Execute Package Utility Version 10.0.1600.22 for 32-bit Copyright (C) Microsoft Corp 1984-2005. All rights reserved. The SQL Server Execute Package Utility requires Integration Services to be installed by one of these editions of SQL Server 2008: Standard, Enterprise, Developer, or Evaluation. To install Integration Services, run SQL Server Setup and select Integration Services. The package execution failed. The step failed." But in Microsoft page http://www.microsoft.com/sqlserver/2008/en/us/web.aspx in Automate tasks and policies section it is written that backup can be scheduled in this edition but how?

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• Disable IPv6 on Loopback address (Localhost, Computer name, ...)

  - by Greg Bray

  We tried installing a 3rd party software product on a new Windows 2008 R2 server and found that everything works except for accessing local services through loopback addresses such as localhost or the computer name (ex: VPS-Web which resolves to localhost). We are not using IPv6 and would like to disable it until the software is compatible. I tried using these instructions for disabling IPv6 on Windows 2008 R2 but it did not disable the protocol for localhost. Pinging localhost or VPS-Web will still return ::1: instead of 127.0.0.1. I can use ping localhost -4 to get the correct address, but IPv6 takes precedent over IPv4 so the 3rd party software only gets the IPv6 address.

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• Google App Engine says "Must authenticate first." while trying to deploy any app

  - by Oleksandr Bolotov

  Google App Engine says "Must authenticate first." while trying to deploy any app: me@myhost /opt/google_appengine $ python appcfg.py update ~/sda2/workspace/lyapapam/ Application: lyapapam; version: 1. Server: appengine.google.com. Scanning files on local disk. Scanned 500 files. Scanned 1000 files. Initiating update. Email: <my_email_was_here>@gmail.com Password for <my_email_was_here>@gmail.com: Error 401: --- begin server output --- Must authenticate first. --- end server output --- We are getting this message with any appliation and under any developer account avialable to us That's what we have installed: App Engine SDK - 1.3.2 PIL - 1.1.7 Python - 2.5.5 pip - 0.6.3 ssl - 1.15 wsgiref - 0.1.2 So, what can it be? Is it well known problem?

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• Bulk Deleting All Messages in a Folder in Microsoft Outlook Web Access

  - by Chris S

  How do you delete all messages in a folder in Outlook, preferrably through Web Access? I left my Outlook account unattended for several days (on vacation) and when I got back I found several folders with over 5k emails, mostly error logging or spam. When I try to open the Outlook client, it just locks up, presumably unable to download that many emails. I can view at most 100 emails at a time, but I can't select all emails to delete or permanently delete them immediately, so manually deleting this many emails is going to take a while. Gmail has a similar feature to select and delete all emails in a folder, and that's free so I figure being a quality non-free product from Microsoft, Outlook should have a similar feature (yes that's sarcasm). I've Googled, but I'm not finding anything. Is this possible?

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• How do you apply development practices like version control, testing and continuous integration/deployment to system administration?

  - by arex1337

  Imagine you're going to manage a number of servers with a number of different services that's used by a number of people. Now say you want to reconfigure or replace some software on one of those servers. Obviously you don't want to work on servers that are in production. If this was a code change, as a developer, I would make the change on my local development machine, test it locally and commit the change to a version control system. The changes could then be deployed in a staging environment, tested further and finally deployed in a production environment. It would also be easy for me to roll back, if necessary. Generally, or specifically, how do you achieve this in system administration? (The first thing that comes to mind is to use virtual machines and put virtual machine images in version control, but I'm sure there is a lot of literature and clever solutions I'm not presently aware of.)

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• Cannot write to registry while installing Microsoft Access 2010 - Error 1406

  - by Rillanon

  While installing I get an error: Microsoft Access 2010 encountered an error during setup. Error 1406. Setup cannot write the value to the registry key \Software\Classes\Interface{000C036F-0000-0000-C000-000000000046}\ProxyStubClsid. Verify that have sufficient permissions to access the registry or contact Microsoft Product Support Services (PSS) for assitance. I went to regedit to check on the key that the error was talking about but when I clicked on it it says file not found. I'm using 64bit Windows 7 Ultimate. Any ideas?

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• linksys wap54g default wpa wireless key?

  - by jack

  Hi I wrongly pressed the push button in linksys wap54g web administration. Then it restarted and stated that it's protected with WPA while I first configured it as WEP. So, my old key didn't work. What should I do? Plugin with wire cable to reconfigure it? - which is the only way? coz it was embedded in ceiling. I found no solutions in product manual and google. Thank you.

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• Windows replacement for HAProxy

  - by GrayWizardx

  It does not appear that there is a similar question to this already posted, so I will go ahead and ask. I am working on a project that could benefit from having two - four servers handling incoming requests to a backend webservice. The service does not require SSL but does need to support occassional long running processes (upto 120 secs). This project does not at present have the funding to purchase a hardware load balancing solution. I have previously used HAProxy as a solution for this, and found it very simple and straightforward. Is there a similar product for windows (server 2003 or 2008) which provides similar configuration options and runs as a lightweight service? For reasons outside my control I cannot setup a Linux machine (physical or virtual) and so I am looking for behaviour that can be deployed on a windows machine. I can only find Perlbal which appears to fall into this category. So as not to keep this open indifenitely I will give credit to the only answer.

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• Remote kill, upload, execute file

  - by Masoud M.

  I'm developing a program and I need to upload my xyz.exe file to many host machines and execute them frequently. I need a server-client tool to do it as below steps after an update signal from my PC: Those host machine should kill any running processes with name xyz.exe. Download my new xyz.exe. Then execute new xyz.exe. I know about some tools like PsExec, but I need a tools with better user-interface and more powerful. Is there any tool to do it ? UPDATE: The systems are in a same LAN, OS is windows (XP or 7), No full remote access is needed. I'm a developer and my program should run in remote hosts and I'm testing my application.

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