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• How can I connect my USB (HP) printer in 10.4, which can't be discovered and worked in 9.x

  - by Brian

  My printer was working under 9.x. It is a an hp photosmart C3100 series. When I open the Admin- printing. no local printers are found. I try to add via other (My local choices are Serial and other). I have tried many uri's - ipp://localhost:631/ipp, http://localhost/ipp, localhost, 127.0.0.1, etc... None have worked. Under the networked I have tried JetDirect, using localhost and 127.0.0.1 and port 631. I have tried many options under IPP with different variants in the host trying to verify a printer. No luck. I tried LPD/LPR with localhost and tried the probe. no luck. I tried the cups admin via localhost:631 and that didn't work. On the old version its simply found the local printer, I might have picked the driver, I can't remember but it was the photosmart c3100 series that was working. I just can't get 10.4 to print.

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• VirtualBox 4.0.10 is now available for download

  - by user12611829

  VirtualBox 4.0.10 has been released and is now available for download. You can get binaries for Windows, OS X (Intel Mac), Linux and Solaris hosts at http://www.virtualbox.org/wiki/Downloads The full changelog can be found here. The high points for the 4.0.10 maintenance release include .... GUI: fixed disappearing settings widgets on KDE hosts (bug #6809) Storage: fixed hang under rare circumstances with flat VMDK images Storage: a saved VM could not be restored under certain circumstances after the host kernel was updated Storage: refuse to create a medium with an invalid variant Snapshots: none of the hard disk attachments must be attached to another VM in normal mode when creating a snapshot USB: fixed occasional VM hangs with SMP guests USB: proper device detection on RHEL/OEL/CentOS 5 guests ACPI: force the ACPI timer to return monotonic values for improve behavior with SMP Linux guests RDP: fixed screen corruption under rare circumstances rdesktop-vrdp: updated to version 1.7.0 OVF: under rare circumstances some data at the end of a VMDK file was not written during export Mac OS X hosts: Lion fixes Mac OS X hosts: GNOME 3 fix Linux hosts: fixed VT-x detection on Linux 3.0 hosts Linux hosts: fixed Python 2.7 bindings in the universal Linux binaries Windows hosts: fixed leak of thread and process handles Windows Additions: fixed bug when determining the extended version of the Guest Additions Solaris Additions: fixed installation to 64-bit Solaris 10u9 guests Linux Additions: RHEL6.1/OL6.1 compile fix Linux Additions: fixed a memory leak during VBoxManage guestcontrol execute Technocrati Tags: Sun Virtualization VirtualBox var sc_project=1193495; var sc_invisible=1; var sc_security="a46f6831";

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• GeoTools Demo Embedded in an Application Framework via Maven

  - by Geertjan

  GeoTools 8.4 was very recently released, according to its active blog, and to celebrate here's a starting point for working with GeoTools on the NetBeans Platform: The sources of the above are below, as a Maven project, so this project can be used in any IDE or command line: http://java.net/projects/nb-api-samples/sources/api-samples/show/versions/7.3/tutorials/geospatial/geotools/MyGeospatialSystem Though quite dated, the GeoTools NetBeans Quick Start is very helpful, especially since it used Maven too, but not the NetBeans Platform, unlike the above sample. From the point of view of NetBeans Platform developers, the GeoTools JMapPane class is very useful, providing the integration point between GeoTools and the rest of the NetBeans Platform application. Being integrated into the NetBeans Platform means that a host of standard features are now available to the GeoTools features, e.g., print functionality, which only requires a runtime dependency on the NetBeans Print API, together with the "print.printable" client property put into constructor of the TopComponent: By the way, I've spent some time now and again being confused about the difference between GeoTools and GeoToolkit. Here's an interesting starting point to beginning to understand the differences and history between them. Soon I'd like to have an example similar for the above for GeoToolkit.

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• ubuntu 12.10 Lenovo b570e, WiFi connected but not working

  - by koogee

  I'm running ubuntu 12.10 liveUSB on a lenovo b570e. It has an atheros wifi card that connects with my home network but I can't browse AT ALL. My network is multiple clients --> router --> isp modem --> Internet I can ping my router (192.168.0.1) but not my isp's modem(192.168.15.1). I have 3 other computers connected to the same router that are working fine (infact i'm posting from one) ping -c 3 google.com unknown host google.com ping -c 3 8.8.8.8 shows 100% packet loss I think its some networking issue. I tried directly connecting it to the router via ethernet cable but same issue. It gets an ip, shows LAN connected but can't browse. If I connect it directly to the isp modem via ethernet cable it starts working fine. Connection Information shows: Interface: 802.11 wifi (wlan0) driver: ath9k security: wpa/wpa2 speed: 150mb/s ip: 192.168.0.106 broadcast: 192.168.0.255 subnet:255.255.255.0 default route: 192.168.0.1 primary dns: 192.168.15.1 i have restarted the router and modem many times. Rebooted the LiveUSB many times.

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• View the Time & Date in Chrome When Hiding Your Taskbar

  - by Asian Angel

  Do you prefer keeping your Taskbar hidden but still need to keep watch on what time it is? Now you can keep track of the time without the Taskbar using the Date Today extension for Google Chrome. A Look at Date Today with Different Themes This extension does one thing and does it well…it provides you with an “active icon” clock that will let you view the time and date in two fashions. The first is by hovering your mouse over the “Toolbar Clock Button”… And the second is by clicking on the “Toolbar Clock Button” to view an enlarged version. Here you can see the extension in use with five different themes to get an idea of how it might look with the theme that you are currently using. It does stand out very nicely with brighter or darker colored themes. Conclusion While this extension is obviously not for everyone it will make a nice (and useful) addition to Chrome for those who prefer keeping their Taskbar hidden. Links Download the Date Today extension (Google Chrome Extensions) Similar Articles Productive Geek Tips Set the Date and Time on SolarisView Browser History Based on Host & Date in ChromeQuick Tip: Set a Future Date for a Post in WordPressFuture Date a Post in Windows Live WriterSave Screen Space by Hiding the Bookmarks Toolbar in Safari for Windows TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Discovery Channel LIFE Theme (Win7) Increase the size of Taskbar Previews (Win 7) Scan your PC for nasties with Panda ActiveScan CleanMem – Memory Cleaner AceStock – The Personal Stock Monitor Add Multiple Tabs to Office Programs

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• Could crosslinking using very general anchor texts be a reason for a drop in rankings?

  - by webmasters

  I have crosslinked 20 sites and I thought I have been penalized for this, asked this question and some experienced members told me maybe that crosslinking may not necessarily be the reason. The sites are on same host, different C class IP and every site in linked to each other. Each site targets long tail kewords. Site 1 - BMW Used Cars - and my area Site 2 - WW Used Cars - and my area And so on... When I crosslinked them (in the sidebar), I did it for the users; instead of repeating the terms used cars and my location over and over (since my users are targeted) I just crosslinked them using the brand: BMW, WW. Targeting locally, my niches are not overly competitive, so I did not need to many external links to rank on various positions on the 1st page. I'm thinking that when I chose to link using only the brand, google might have thought I wanted to actually rank for BBW and WW, hence the drop in my targeted local traffic. Could this be? I now have no-followed the links and I am noticing a slight recovery, but if it's not a interlinking penalty it would be a shame not to benefit from my links.

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• Web Hosting Checklist

  - by Chris

  I am a web developer that is starting to look into hosting his own website. I would like to showcase my programming skills (PHP, MySQl, C#, Wordpress). My knowledge of languages I am OK with but the actually hosting site is where my knowledge starts to get a little shaky. I know the basics (bandwidth, sub-domains, re-write rules) but I would love your input, to help me formulate a check list of certain web-hosting services that I should be on the look-out for. Also I was wondering if there were any reliable hosting providers who give you the option to host both c# code-behinds and PHP code. As I would like to have two versions of my site, one in C# and one in PHP the hope is that if I need to look for another job this website will help me show possible employers my server side knowledge. I hope this is enough info, I did some researching online but found a bunch of unless articles and I've always have had luck on the StackExchange sites. So hopefully you, can help me. Thanks alot.

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• VMware9 fails to launch Virtual OS. Ubuntu 12.10 64bit (Unable to change virtual machine power state: Pipe connection has been broken.)

  - by pst007x

  Another issue I need help with. I use VMware for work on Ubuntu 12.04. However for some reasons my VMware Workstation software generates the following error: Unable to change virtual machine power state: Failed to power on '/home/pst007x/vmware/Windows 7 x64/Windows 7 x64.vmx'. Transport (VMDB) error -14: Pipe connection has been broken. Product: VMware® Workstation Version: 9.0.0 build-812388 Host OS Version: 3.5.0-18-generic Ubuntu 12.10 64bit Kernel Linux 3.5.0-18-generic I have seen patches, but nothing works, and the patches are not maintained, broken links. PLEASE NOTE: I know that this has been asked, but there was no answer given that resolves this issue. Unfortunately I have changed all my office and personal PC's to Ubuntu, and use Win7 in a vm, however since 12.10, vm now fails to launch. For me this is a catastrophe, and makes Ubuntu useless for me to use! I am in a desperate situation here, is there is anyone that can offer any help I would be truly appreciative. I have looked on the VMware forums and the only solution is offered for Fedora, but the people posting there are not clear about what the solution is! thanks PLEASE DO NOT CLOSE THIS QUESTION! I have tried everywhere to find a solution, but I have come up blank... Patches referenced to in other posts do not work in this version of VMware...

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• Android Activity access Unity Classes

  - by Anomaly

  I have made my own C# classes in Unity, is there any way I can access these classes from the Android Activity that starts the UnityPlayer? Example: I have a C# class called testClass in Unity: class testClass{ public static string myString="test string"; } From the Android activity in Java I want to access that class: string str=testClass.myString; Is this possible? If so, how? Or is there some other way to do this? In the end I basically want to communicate between my Android activity and the UnityPlayer object. Thanks in advance. EDIT: Ok so I looked at building Android plugins for Unity but this wasn't satisfactory to me. I ended up building a socket client-server interface in Unity with C# and another one in Java for the Android app: So Unity listens on port X and broadcasts on port Y The Android activity listens on port Y and broadcasts on port X This is necessary as both interfaces are running on the same host. So that's how I solved my problem, but I'm open for any suggestions if anyone knows a better way of communicating between the Unityplayer and your app.

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• How can I test linkable/executable files that require re-hosting or retargeting?

  - by hagubear

  Due to data protection, I cannot discuss fine details of the work itself so apologies PROBLEM CASE Sometimes my software projects require merging/integration with third party (customer or other suppliers) software. these software are often in linkable executables or object code (requires that my source code is retargeted and linked with it). When I get the executables or object code, I cannot validate its operation fully without integrating it with my system. My initial idea is that executables are not meant to be unit tested, they are meant to be linkable with other system, but what is the guarantee that post-linkage and integration behaviour will be okay? There is also no sufficient documentation available (from the customer) to indicate how to go about integrating the executables or object files. I know this is philosophical question, but apparently not enough research could be found at this moment to conclude to a solution. I was hoping that people could help me go to the right direction by suggesting approaches. To start, I have found out that Avionics OEM software is often rehosted and retargeted by third parties e.g. simulator makers. I wonder how they test them. Surely, the source code will not be supplied due to IPR rgulations. UPDATE I have received reasonable and very useful suggestions regarding this area. My current struggle has shifted into testing 3rd party OBJECT code that needs to be linked with my own source code (retargeted) on my host machine. How can I even test object code? Surely, I need to link them first to even think about doing anything. Is it the post-link behaviour that needs to be determined and scripted (using perl,Tcl, etc.) so that inputs and outputs could be verified? No clue!! :( thanks,

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• Kubuntu not showing eth0

  - by Laurbert515

  I just installed Kubuntu 12.04.2 and do not have an internet connection. I also cannot access the Desktop and only have the terminal. When I enter xlcock I get Error: Can't open display:. I believe this is because I do not have the correct drivers and need to download them ... using the internet which I can't access. So here's what's going on ... ifconfig gives: lo Link ecap: Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:16 errors:0 dropped:0 overrruns:0 frame:0 TX packets:16 errors:0 dropped:0 overrruns:0 frame:0 collisions:0 txqueuelen:0 RX bytes:1296 (1.2 KB) TX bytes:1296 (1.2 KB) wlan0 Link encap: Ethernet HWaddr 68:17:29:58:49:4a UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:16 errors:0 dropped:0 overrruns:0 frame:0 TX packets:16 errors:0 dropped:0 overrruns:0 frame:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) lspci -nnk gives: 07:00.0 Network Controller [0280] Intel Corporation Centrino Wireless-N 2230 [8086:0887] (rev c4) Subsystem: Intel Coporation Centrino Wireless-N 2230 BGN [8086:4062] Kernel driver in use: iwlwifi Kernel modules: iwlwifi 0d:00.0 Ethernet Controller [0200]: Atheros Communications Inc. AR8161 Gigabit Ethernet [1969:1091] (rev 10) Subsystem: Toshiba America Info Systems Device [1179:fa77] I believe this means that it is using the ethernet connection but thinks it is a wireless connection. sudo lshw -class network gives: *-network description: Wireless interface product: Centrino Wireless=N 2230 ... *network UNCLAIMED description: Ethernet controller product: AR8161 Gigabit Ethernet I want to get the internet working so I can fix the GPU driver, etc. but I can't seem to get it working even though I have my ethernet cable plugged in (and I'm sure it is working).

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• Dynamic Monitoring Service (DMS) Configuration Dumping and CPU Utilization

  - by ShawnBailey

  There was recently a report of CPU spikes on a system that were occuring at precise 3 hour intervals. Research revealed that the spikes were the result of the Dynamic Monitoring Service generating a metrics dump and writing it under the server 'logs' folder for every WLS server in the domain. This blog provides some information on what this is for and how to control it. The Dynamic Monitoring Service is a facility in FMw (JRF to be more precise) that collects runtime data on the components deployed to WebLogic. Each component is responsible for how much or how little they use the service and SOA collects a fair amount of information. To view what is collected on any running server you can use the following URL, http://host:port/dms/Spy and login with admin credentials. DMS is essentially always running and collecting this information in the runtime and to protect against loss of this data it also runs automatic backups, by default at the 3 hour interval mentioned above. Most of the management options for DMS are exposed through WLST but these settings are not so we must open the dms_config.xml file which can be found in DOMAIN_HOME/config/fmwconfig/servers/<server_name>/dms_config.xml. The contents are fairly short and at the bottom you will find the following entry: <dumpConfiguration>     <dump intervalSeconds="10800" maxSizeMBytes="75" enabled="true"/> </dumpConfiguration> The interval of 10800 seconds corresponds to the 3 hours and the maximum size is 75MB. The file is written as an archive to DOMAIN_HOME/servers/<server_name>/logs/metrics. This archive contains the dump in XML format. You can disable the dumps all together by simply setting the 'enabled' value to 'false' or of course you could modify the other parameters to suit your needs. Disabling the dumps will NOT impact DMS collections or display at runtime. It will only eliminate these periodic backups.

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• Looking to create website that can have custom GUI and database per user

  - by riley3131

  I have developed an MS Access database for a company to track data in regards to production of a certain commodity. It has many many tables, forms, reports, etc. These were all done as the user requested, and resemble the users previously used system, mostly printed worksheets and excel workbooks. This has created a central location for all information and has allowed the company to compare data in a new way. I am now looking to do this for other companies, but would like to switch it to a web application. Here is my question. What is the best way to create unique solutions for individual companies that can have around 100 users each? I would love to create one site that would serve all parties, but that would ruin the customizable nature of what I am developing. I love the ability to create reports, excel sheets, pdf, graphs, etc with access, but am tired of relying on my customers software, servers, etc. I have some experience with WAMP, but I am far better at VBA. I was okay at PHP, and was getting a grasp on JavaScript a few years back. I am also trying to decide whether to go with WAMP or LAMP, if web is the best choice. Also, should I try set up one site for all users that after log-in goes to company specific pages, or individual sites for each company? Should I host or use a service?

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• Scripted SOA Diagnostic Dumps for PS6 (11.1.1.7)

  - by ShawnBailey

  When you upgrade to SOA Suite PS6 (11.1.1.7) you acquire a new set of Diagnostic Dumps in addition to what was available in PS5. With more than a dozen to choose from and not wanting to run them one at a time, this blog post provides a sample script to collect them all quickly and hopefully easily. There are several ways that this collection could be scripted and this is just one example. What is Included: wlst.properties: Ant Properties build.xml soa_diagnostic_script.py: Python Script What is Collected: 5 contextual thread dumps at 5 second intervals Diagnostic log entries from the server WLS Image which includes the domain configuration and WLS runtime data Most of the SOA Diagnostic Dumps including those for BPEL runtime, Adapters and composite information from MDS Instructions: Download the package and extract it to a location of your choosing Update the properties file 'wlst.properties' to match your environment Run 'ant' (must be on the path) Collect the zip package containing the files (by default it will be in the script.output location) Properties Reference: oracle_common.common.bin: Location of oracle_common/common/bin script.home: Location where you extracted the script and supporting files script.output: Location where you want the collections written username: User name for server connection pwd: Password to connect to the server url: T3 URL for server connection, '<host>:<port>' dump_interval: Interval in seconds between thread dumps log_interval: Duration in minutes that you want to go back for diagnostic log information Script Package

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• How do I list all the relation variables and debug them interactively?

  - by mfisch

  I'm writing a charm that requires a mysql database, I found from looking at other charms that this (below) is how I get the info about the database: user=`relation-get user` password=`relation-get password` mysqlhost=`relation-get private-address` But I just found that from reading the wordpress charm example, is there a way to show all the relation variables that I can use? Also, while debugging my db-relation-changed script, I wanted to ssh into my host and interactively run those commands, for example relation-get user, but it didn't work. I resorted to having to restart everything and use juju log to print them out. This wasted a lot of time. Is there a way to print out these relations, either from my dev box or from the instance running my charm? (Below is what happens when I tried to interactively run relation-get): ubuntu@mfisch-local-tracks-0:~$ relation-get user usage: relation-get [-h] [-o OUTPUT] [-s SOCKET] [--client-id CLIENT_ID] [--format FORMAT] [--log-file FILE] [--log-level CRITICAL|DEBUG|INFO|ERROR|WARNING] [-r RELATION ID] [settings_name] [unit_name] No JUJU_AGENT_SOCKET/-s option found I tried juju debug-hooks tracks/0 -e local, that dropped me into a shell and relation-get still failed.

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• Wired Connection Problem

  - by Dave

  After upgrading to 12.04 my interent connection no longer works. More precisely it is really, really, slow, and occasionally will connect, but do so only for a few moments and then disappear again. I am on a Lenovo Workstation e20. Output of ifconfig: eth0 Link encap:Ethernet HWaddr 70:f3:95:00:64:3e inet addr:192.168.1.20 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::72f3:95ff:fe00:643e/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:7398 errors:0 dropped:74 overruns:0 frame:0 TX packets:6684 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:5407828 (5.4 MB) TX bytes:854343 (854.3 KB) Interrupt:20 Memory:fb120000-fb140000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:1587 errors:0 dropped:0 overruns:0 frame:0 TX packets:1587 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:152089 (152.0 KB) TX bytes:152089 (152.0 KB) I am really at a loss for what to do. I am relatively new to Ubuntu, searched the other user questions and couldn't figure this out.

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• Good podcasting solution?

  - by burnso

  I simply ask for the best, most common and simple way to set up a podcast? Please, I need an answer so I can close this question? I run a joomla-based website for a small church and now need a simple, cheap and effective solution for an audio podcast. I am looking for a solution that will do the following: User uploads audio files to service (preferably not to our own site) that is cheap, fast and simple to use. Dropbox for example? Files are easily embeddable into Joomla website articles to be played on the spot (through simple-to-use and media player). Preferably through RSS feeds (to make it easy to update every week). Files are downloadable. Files are viewable on iPhones and other smartphones. Solution can be broadcasted via iTunes. Solution doesn't need a lot of extra, new third party software. I'd rather keep it simple and familiar than have it be a complete new system but with a steep learning curve. At the moment we use vimeo to host the podcast, through video files. But we'd like to move to something simpler that doesn't involve a series of difficult steps to upload the files to the web.

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• Create subdomains via C-Panel or via domain registrar?

  - by cybergeek654

  I am a novice, so excuse me if it sounds dummy. I read a few similar questions on this topic here but they did not answer my question. I have a personal website, hosted with C-panel control panel. Via C-panel I can easily create new subdomains and I do not need to apply any DNS settings or so. And the subdomian is good to go immediately and are working fine. I have unlimited subdomains option. When I check my DNS management control panel in my domain registrar's site, there is no record associated with my subdomains. Now I want to buy a new domain name from 1and1, and have it as an add-on domain in my prevouse host. 1and1 say they only allow 5 subdomains. What does this mean? Can not I create unlimited subdomains under my new domain name, just as I do for my old domain? How does C-panel create and manage subdomains that there is nothing about it in my DNS control panel? Thanks for your help

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• The Power of Specialization &ndash; google ads for WebLogic Specialized Partners

  - by JuergenKress

  For WebLogic specialized partner we offer free google advertisement to promote your Oracle WebLogic service offerings on your website or your WebLogic events. We will host the complete campaign management. To create your google campaign please send Jürgen Kress below: Your campaign text: 3 lines of text each 35 letters (NOT more letters!) Your campaign link: direct link to the website you want to promote Ideas for the website which we will promote with the google ads: Your Oracle WebLogic Service offerings with concrete offering e.g. WebLogic Innovation Workshop Oracle WebLogic Specialized Logo Your Oracle WebLogic References Your WebLogic Implementation consultant with pictures Your WebLogic sales contact persons Example of an WebLogic Specialization text ad: Oracle SOA Specialized plan to become more agile? eProseed the Oracle SOA Experts An interview with Griffiths Waite's Business Development Director highlighting the benefits of the Oracle Specialization Programme. WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center. BlogTwitterLinkedInMixForumWiki Technorati Tags: Specialization,Google ads,Specialization benefits,WebLogic Specialization,WebLogic Community,Oracle,OPN,Jürgen Kress

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• Web hosting company basically forces me to use their domain name [closed]

  - by Jinx

  I've recently stumbled upon an unusual problem with one of hosting companies called giga-international.com. Anyway, I've ordered com.hr domain from Croatian domain name registration company, and my client insisted on using this host provider as couple of his friends already are hosted with them. I thought something was fishy when the first result on Google for Giga International was this little forum rant instead of their webpage. When I was checking their services they listed many features etc... space available, bandwidth etc. I just wanted to check how much ram do I get for my PHP scripts so I emailed them, and they told me that was company secret. Seriously? Anyway, since my client still insisted on hosting with them I've bought their Webspace package. During registration I had to choose free domain name because I couldn't advance registration without it. Nowhere was said, not even in general terms and conditions that I wouldn't be able to change that domain name. At least not for double the price of domain name per year. They said I can either move my domain name over to them (and pay them domain registration), or pay them 1 Euro per month for managing a DNS entry. On any previous hosting solution I was able to manage my domain names just by pointing my domain to their name servers, and this is something completely new and absurd for me. They also said that usual approach is not possible because of security and hardware limitations. I'd like to know what you guys think about this case, and should I report, and where should I report this case. In short. They forced me to register free domain name which doesn't suit my needs in order to register for their webspace package, and refuse to change domain name for my account until I either transfer domain to them or pay them DNS management which costs double the price of the domain name per year.

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• deb package building

  - by newcode

  While trying to build a package, I gave the following command in terminal: cd Downloads/src/ cd unity-5.10.0/ dpkg-buildpackage -rfakeroot -uc -b Then it gives the output: dpkg-buildpackage: export CFLAGS from dpkg-buildflags (origin: vendor): -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security dpkg-buildpackage: export CPPFLAGS from dpkg-buildflags (origin: vendor): -D_FORTIFY_SOURCE=2 dpkg-buildpackage: export CXXFLAGS from dpkg-buildflags (origin: vendor): -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security dpkg-buildpackage: export FFLAGS from dpkg-buildflags (origin: vendor): -g -O2 dpkg-buildpackage: export LDFLAGS from dpkg-buildflags (origin: vendor): -Wl,-Bsymbolic-functions -Wl,-z,relro dpkg-buildpackage: source package unity dpkg-buildpackage: source version 5.10.0-0ubuntu6 dpkg-buildpackage: source changed by Didier Roche <[email protected]> dpkg-buildpackage: host architecture i386 dpkg-source --before-build unity-5.10.0 dpkg-checkbuilddeps: Unmet build dependencies: libutouch-grail-dev (>= 1.0.20) libutouch-geis-dev (>= 2.0.10) dpkg-buildpackage: warning: Build dependencies/conflicts unsatisfied; aborting. dpkg-buildpackage: warning: (Use -d flag to override.) Then I tried to install the package using: cd.. sudo dpkg -i *deb And it gives: [sudo] password for harshnarang8: dpkg: error processing *deb (--install): cannot access archive: No such file or directory Errors were encountered while processing: *deb What is exactly causing the problem and how to encounter it?

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• Wireless is connected, but can't browse the Internet (or connection goes completely)

  - by user261007

  I'd like some help with this, please. Will be very glad is anyone will point me in the right direction. Thank you in advance! This is when the connection is present and browsing: eth0 Link encap:Ethernet HWaddr 50:46:5d:4a:9e:4f UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:2666 errors:0 dropped:0 overruns:0 frame:0 TX packets:2666 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:228844 (228.8 KB) TX bytes:228844 (228.8 KB) wlan0 Link encap:Ethernet HWaddr dc:85:de:1c:91:f9 inet addr:192.168.1.147 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::de85:deff:fe1c:91f9/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:18780 errors:0 dropped:0 overruns:0 frame:0 TX packets:12817 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:21198762 (21.1 MB) TX bytes:1746891 (1.7 MB) When connection goes: wlan0 Link encap:Ethernet HWaddr dc:85:de:1c:91:f9 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:209503 errors:0 dropped:0 overruns:0 frame:0 TX packets:132560 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:268811733 (268.8 MB) TX bytes:15479814 (15.4 MB)

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• The Java Tour 2014

  - by Tori Wieldt

  The Java Tour 2014 is series of events (over 75 and counting!) for Java Developers held around the world. The Oracle Events team is producing a Java Tour in coordination with the Oracle Technology Network (OTN) and Java User Groups (JUGs).  Oracle Java Evangelists and Java Champions provide top-notch content and chance to network with other developers.  The Java Tour 2014 allows local, regional-specific Java topics to be addressed both by Oracle and the Java community. You'll hear the latest on Java 8, Java EE, and Java Embedded. Check out the Java Tour 2014 page for cities and dates.  If you would like to host your own event focused on Java 8, you can order a kit of materials. If the tour doesn't make it to your city, OTN and Java Evangelists provides lots of online content: -OTN Technical Articles -YouTube Java Channel -Facebook I <3 Java -NightHacking streaming and replays -Java Forums for questions and conversation  The tour culminates in the biggest Java event of the year, JavaOne. See you in person or online!

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• How to automatically mount a folder and change ownership from root in virtualbox

  - by Fiztban

  It is my first time using virtualbox and ubuntu (14.04), I am on a host Windows 7 OS. I am trying to mount a shared folder that has files I need to access both in the virtualbox and on the windows OS. I have successfully mounted them using the vboxsf from the Guest Additions installed. To mount I used the command sudo mount -t vboxsf <dir name in vbox> <directory in linux for example I used sudo mount -t vboxsf Test /home/user/Test I found several ways of mounting the directories automatically upon startup using for example the /etc/rc.local method (here) where you modify said file appending the command to it (without sudo). Or by using the fstab method (here). I prefer the rc.local method personally. Once mounted it has permissions dr-xr-xr-x however once mounted the directory is of root ownership and chown user /home/user/Test has no effect. This means I cannot make or change files in it as a normal user. In the VirtualBox the directory to be shared is not set as read-only. Is there a way to automatically mount the shared folder and assign ownership to my non root user?

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• Context switches much slower in new linux kernels

  - by Michael Goldshteyn

  We are looking to upgrade the OS on our servers from Ubuntu 10.04 LTS to Ubuntu 12.04 LTS. Unfortunately, it seems that the latency to run a thread that has become runnable has significantly increased from the 2.6 kernel to the 3.2 kernel. In fact the latency numbers we are getting are hard to believe. Let me be more specific about the test. We have a program that has two threads. The first thread gets the current time (in ticks using RDTSC) and then signals a condition variable once a second. The second thread waits on the condition variable and wakes up when it is signaled. It then gets the current time (in ticks using RDTSC). The difference between the time in the second thread and the time in the first thread is computed and displayed on the console. After this the second thread waits on the condition variable once more. So, we get a thread to thread signaling latency measurement once a second as a result. In linux 2.6.32, this latency is somewhere on the order of 2.8-3.5 us, which is reasonable. In linux 3.2.0, this latency is somewhere on the order of 40-100 us. I have excluded any differences in hardware between the two host hosts. They run on identical hardware (dual socket X5687 {Westmere-EP} processors running at 3.6 GHz with hyperthreading, speedstep and all C states turned off). We are changing the affinity to run both threads on physical cores of the same socket (i.e., the first thread is run on Core 0 and the second thread is run on Core 1), so there is no bouncing of threads on cores or bouncing/communication between sockets. The only difference between the two hosts is that one is running Ubuntu 10.04 LTS with kernel 2.6.32-28 (the fast context switch box) and the other is running the latest Ubuntu 12.04 LTS with kernel 3.2.0-23 (the slow context switch box). Have there been any changes in the kernel that could account for this ridiculous slow down in how long it takes for a thread to be scheduled to run?

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