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• Konszolidációs stratégiák az Oracle Database Machine-hez webcast, 2010. június 16.

  - by Fekete Zoltán

  Az utóbbi hetekben két tanfolyamon vettem részt, így a blogbejegyzések nem szaporodtak. Na most újult erovel. :) Regisztráció a webcast-ra. Holnap, azaz 2010. június 16-án 18h-kor (közép-európai ido) csatlakozhatunk a Consolidation Strategies for Oracle Database Machine, azaz a Konszolidációs stratégiák az Oracle Database Machine-hez címu webcasthoz, amit az Oracle BIWA és az Exadata SIG (Special Interest Group) rendez meg. Az eloadó: Dave Norris, aki az Oracle X Team tagja. Exadata SIG: http://OracleExadata.org BIWA SIG http://OracleBIWA.org The Oracle Database Machine V2 (the Exadata system) offers customers the opportunity to run combinations of consolidated workloads for both data warehousing (DW) and online transaction processing (OLTP) while maintaining superior performance. Regisztráció a webcast-ra.

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• Website URL layout & structure for SEO & PR

  - by Junaid Saeed

  i have already mastered the skills of building a page to comply with SEO requirements. What i want to do is customize the URL based parameters for best SEO & PR. I run wallpapers blog wallz which provides different resolution desktop wallpapers I am thinking about expanding the site to provide wallpapers for multiple devices like iphone, android, pc etc etc My goal is to provide users ease by detecting their devices and directing them to the relative portion of site, keeping that in mind also keep my URLs in a SEO friendly manner. i have the following two options for my URL structure wallpapers.com \ iphone \ **or** iphone . wallpapers . com wallpapers.com \ galaxyS3 \ **or** galaxys3 . wallpapers . com subdomain or subfolders, which one is a better option, i will separate interfaces for ever subdomain\subfolder basing on the specific device. And after this the URL structure will be like wallpapers.com \ galaxyS3 \ Cars \ Ferrai 550 . html galaxys3.wallpapers.com \ Cars \ Ferrai 550 . html what is the better way for me to proceed in

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• Collaborate 2010 Sunday Update

  - by mike.donohue

  Landed safe and sound in Las Vegas and had a lively meeting with the OAUG BI Publisher SIG run by Abhishek Chandan from Ideametrics. For those attending and specifically for those planning to attend the Hands On Lab on Monday at 3:45, I put the wrong room in my earlier post. The Hands On Lab will be in Palm B. 3:45 pm - 4:45 pm Oracle Business Intelligence Publisher Hands On Lab (1) Session: 217 Location: Palm B By: Noelle and Mike Here is a PDF version of the Focus On BI Publisher for Collaborate 2010 listing all the sessions we know about that cover BI Publisher ... hopefully the correct location. FocusOnBIPublisher at Collaborate2010.pdf

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• AutoSSH for a robust tunnel

  - by Budric

  I'm trying to start an ssh tunnel from A to B and have it run despite things like: period network/wifi drops on A and remote server reboot on B. My ssh tunnel starts using upstart script on A with event start on (net-device-up IFACE=eth0) I've found autossh which is supposed to handle these kinds of things, but had some trouble getting it to work. The upstart executes: autossh -M 0 -2qTN -o "ServerAliveInterval 30" -o "ServerAliveCountMax 2" -L 5678:somehost:5678 user@B However when I log into B and kill -9 that tunnel session, autossh just exits with "Connection to B closed by remote host." That's not what I expected autossh to do. Any advice on how to set this up? Any GUI service monitoring utilities out there that essentially display a green light if a service is up? Thanks.

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• Ubuntu stuck in low resolution after UNinstalling / disabling NVidia drivers

  - by Han Cnx

  Tried the Nvidia driver, installed using the Additional Drivers panel. Didn't like it much; the CPU seemed to overheat more and the brightness controls stopped working. Also selecting a second display is a pain using that horrible NVidia settings thing. So wanted to disabled it again.. problem is, UBuntu is then stuck in either 640x480 or 800x600 (second time I tried to install it back and then remove again). How can I get this back the way it was? The original Ubuntu drivers worked just fine, allowing me to run Unity and games properly. I tried a xserver-xorg reconfigure but this didn't do anything. (No xorg.conf file either). This is on a Lenovo Thinkpad T410i

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• How do I fix skype on x86 11.10 desktop which garbles audio both ways in connection with a Windows user?

  - by keepitsimpleengineer

  Strange phenomena ? I have a friend I connect with and talk to regularly occasionally using video. He runs Windows XP with a Logitech webcam and mike. I run Windows XP with a Logitech webcam and mike, and a laptop with built in webcam and mike running both 11.10 x86 Desktop and Windows XP Home. We gab and ogle fine with these. But when I installed 11.10 x86 with GNOME 3.2 dual boot on the same machine with the Logitech webcam and mike, whenever I try to ogle and gab the audio is total garbled. When I make a test call to skype or call somebody on a landline or cell - there's no problem. In summary, everything works except for when running 11.10 x86 GNOME 3.2 connected to his Windows XP. Stumped on this end.

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• Running Ubuntu on Vaio laptops

  - by Deepak Adhikari

  I am an Ubuntu user... and willing to buy a laptop for my undergraduate study, but the brand which I am likely to buy does not fall on Ubuntu certified hardware. I am willing to buy vaio S series laptop. Can anyone answer my following questions? will Ubuntu 11.10 run smoothly with full hardware compatibility on vaio S series laptop? is there ubuntu support for vaio or vaio support for Ubuntu? googling on net found that there are some problems running Ubuntu on vaio is that true? if so will I get support from any community?

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• How to send packets via a pptp vpn tunnel?

  - by Phill

  I'm trying to send certain port traffic through my ppp0 interface it's a pptp vpn tunnel, First, I'm using a wireless usb interface, I connect up to my access point, then I initiate my vpn, there is a connection but I do not channel all connexions through that, nor do I want to, so, say I want to channel all port 80 packets through my vpn (interface dev ppp0). I first run: iptables -t mangle -A OUTPUT -p tcp --dport 80 -j MARK --set-mark 0xa to mark the correct packets then I add a table named vpn_table, I then add ip route add default dev ppp0 table vpn_table when I do that traffic begins to dribble through the ppp0, but no pages load. I supose I must have caused some sort of coflict, or the route I'm adding in vpn_table isn't quite right. I'm not sure, I think I'm marking the packets correctly but I can't be sure of that either. UPDATE: I think i've got part of the issue solved: running tcpdump -i ppp0 showed me that indeed there was outgoing requests via ppp0, now, there is never a response, and pages do not load with using that interface..i'm still missing something.

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• Only MKV format available in HandBrake

  - by Steve Ellis

  I am running Ubuntu 14.04 LTS 32 bit. I have installed HandBrake rev5474 (i686), which I believe is the latest, and the Ubuntu Restricted Extras. I am able to play DVDs via VLC but when it comes to ripping them, so that I can back them up to my Twonky media server, I have issues. I launch HandBrake and find that the only format available for me to select is MKV. When I used to run Handbrake on this machine while I was running Ubuntu 13.10 and lower I had no issues and **lots of formats (including MP4 which is what I'm really after) but since reformating and installing 14.04 I've had this issue. Any help would be much appreciated.

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• If Expression True in Immediate Window But Code In if Block Never Runs

  - by Julian

  I set a break point in my code in MonoDevelop to break whenever I click on a surface. I then enter the immediate window and test to see if the the if statement will return true in comparing two Vector3's. It does return true. However, when I step over, the code is never run as though the statement evaluated false. Does anyone know how this could be possible? I've attached a screenshot. Here is the picture of my debug window and immediate window. You can see where the immediate window evaluates to true. The second breakpoint is not hit. Here are the details of the two Vector3's I am comparing. Does anyone know why I am experiencing this? It really seems like an anomaly to me :/ Does it have something to do with threading?

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• Ubuntu 12.04 GTK Problem

  - by Dana Holt

  I am running Ubuntu 12.04 and compiled and installed GTK 3.4 to go through some GTK developer tutorials. Installing this version of GTK has caused problems with Unity. All system dialogs and top bar now have a different (older) look, and when I try to launch Nautilus I get the following message: Gtk-Message: Failed to load module "canberra-gtk-module" Initializing nautilus-open-terminal extension Initializing nautilus-dropbox 1.4.0 Initializing nautilus-gdu extension nautilus: symbol lookup error: nautilus: undefined symbol: ubuntu_menu_proxy_get I have run make uninstall on the newer version of GTK and reinstalled just about every package I can think of, but I am still having the same problem. How can I repair the default Ubuntu GTK libraries? EDIT Also, I noticed that my desktop icons are gone (launcher works), and I can't interact with the desktop. I can't drag any shortcuts to it, etc.

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• JUJU and ERROR environment has no access-key or secret-key

  - by Riccardo Magrini

  following the official guide: [1]https://juju.ubuntu.com/docs/config-maas.html and considered that I've generated the ssh key (added it to UI of MAAS) and the API key, my environments.yaml file presents in this way: environments: maas: type: maas maas-server: 'http://x.x.x.x/MAAS/' maas-oauth: 'NDPA86PsEzS7bFynSy:vqJLkyHUJbvYzbtY5Q:sXXXXXXXXXXXXXXXXXXXXXX admin-secret: 'nothing' default-series: precise authorized-keys-path: ~/.ssh/id_rsa.pub # or any file you want. when I try to run the command: juju bootstrap receive the following error: ERROR environment has no access-key or secret-key Someone can explain me where is the wrong? MAAS and JUJU are installed using their ppa stable on an Ubuntu 12.04.3 Server

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• Installation automation

  - by Denis Gorbachev

  Use case: When I install Ubuntu on another computer, I need to: install all the packages that I use; make some config changes; svn checkout some projects; git clone some projects; setup .ssh/config; download a custom Eclipse build; download some additional Eclipse plugins; make many other tweaks. So, I want to run a script, like sudo install-everything-needed, that would execute these predefined actions. Is there any package that provides the backbone for such system?

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• sound card is not working

  - by ralph crowhurst

  I've installed Ubuntu 11.4 on my dell xps m2010 using wubi. Then booted up and could not connect to the Internet using 3three huawei e122 usb mobile broadband (I would like this to work also). I've managed to connect through a wireless network, I went to my favorite sites and was told I needed to install adobe flash player.This what I did players run and picture is good. But there is no sound! Then I've tried to play songs in Banshee, but no sound. I have checked everything in sound preferences including test speaker, there is sound. I have sigmatel sound card. Thanks

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• "bad mirror archive" : What should I put as the "mirror of ubuntu archive" on installation of ubuntu?

  - by rockit

  I'm trying to set up ubuntu from my old macintosh laptop, but when it asks me to put in the "mirror of ubuntu archive" I run into problems. For the mirror, I put in mirror.anl.gov for the ubuntu archive mirror directory, i put in pub/ubuntu/ Then I leave the http proxy blank and hit "continue" It then tries to "download release files", which starts at 0%, and eventually jumps straight to 100% and then it presents me with an error of "bad mirror archive". Any advice? I never set up ubuntu before, and I'm really struggling with this step.

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• 2.5D action RPG game

  - by Phorden

  I want to make a 2.5D action RPG game in the next say five years. I need to learn a language first and I have started with C#. I haven't gotten too far into learning it and I would like advice on the best way to approach making a game like this in the long run. Work with XNA studios or stop and learn C++ and UDK? Or maybe there is another good way to approach this. I want to learn programming, so just using a visual editor without learning to code is not the way I want to go. I also don't want to write my game engine from scratch. I'm all ears for advice.

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• How to find which w3wp.exe to attach when debugging your SharePiont2010 project

  - by ybbest

  When debugging SharePoint2010 project, you need to attach w3wp.exe process, however there are often quite a few of them and it is very hard to figure out which one to attach. Today, I will show you how to find out which process to attach using a tool called process explorer. 1. Download the process explorer and run it after you download it. 2. Find the w3wp.exe processes under wininit.exe right-click the columns header and click Select Columns. 3. Include Command Line under Process Image. 4. Now you can see your IIS site name next to w3wp.exe, in my case I’d like to attach the “SharePoint – BenDev80″.You can see the PID of the process is 2920. 5. From the above process you know the process ID you’d like to attach is 2920, you can then go ahead to attach the process from Visual Studio.

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• Jdk 6.0 update 6 installed sucessfully but java command not working

  - by Ravi.Kumar

  I switched to linux (Ubuntu 12.04) this morning and find it great but messed up while installing java. :-(. I have installed jdk6.0_6 successfully but when I run java command in terminal, I get this ravi@ravi-LIFEBOOK-AH531:~$ java The program 'java' can be found in the following packages: * default-jre * gcj-4.6-jre-headless * openjdk-6-jre-headless * gcj-4.5-jre-headless * openjdk-7-jre-headless Try: sudo apt-get install <selected package> Could someone help me with this? Below are the steps that I followed to install: copied file named jdk-6u6-linux-x64.bin to my documents from terminal executed chmod a+x jdk-6u6-linux-x64.bin and then executed sudo ./jdk-6u6-linux-x64.bin In terminal I accepted the license agreement and done.

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• Explaining Explain Plan Notes for Auto DOP

  - by jean-pierre.dijcks

  I've recently gotten some questions around "why do I not see a parallel plan" while Auto DOP is on (I think)...? It is probably worthwhile to quickly go over some of the ways to find out what Auto DOP was thinking. In general, there is no need to go tracing sessions and look under the hood. The thing to start with is to do an explain plan on your statement and to look at the parameter settings on the system. Parameter Settings to Look At First and foremost, make sure that parallel_degree_policy = AUTO. If you have that parameter set to LIMITED you will not have queuing and we will only do the auto magic if your objects are set to default parallel (so no degree specified). Next you want to look at the value of parallel_degree_limit. It is typically set to CPU, which in default settings equates to the Default DOP of the system. If you are testing Auto DOP itself and the impact it has on performance you may want to leave it at this CPU setting. If you are running concurrent statements you may want to give this some more thoughts. See here for more information. In general, do stick with either CPU or with a specific number. For now avoid the IO setting as I've seen some mixed results with that... In 11.2.0.2 you should also check that IO Calibrate has been run. Best to simply do a: SQL> select * from V$IO_CALIBRATION_STATUS; STATUS        CALIBRATION_TIME ------------- ---------------------------------------------------------------- READY         04-JAN-11 10.04.13.104 AM You should see that your IO Calibrate is READY and therefore Auto DOP is ready. In any case, if you did not run the IO Calibrate step you will get the following note in the explain plan: Note -----    - automatic DOP: skipped because of IO calibrate statistics are missing One more note on calibrate_io, if you do not have asynchronous IO enabled you will see:  ERROR at line 1: ORA-56708: Could not find any datafiles with asynchronous i/o capability ORA-06512: at "SYS.DBMS_RMIN", line 463 ORA-06512: at "SYS.DBMS_RESOURCE_MANAGER", line 1296 ORA-06512: at line 7 While this is changed in some fixes to the calibrate procedure, you should really consider switching asynchronous IO on for your data warehouse. Explain Plan Explanation To see the notes that are shown and explained here (and the above little snippet ) you can use a simple explain plan mechanism. There should  be no need to add +parallel etc. explain plan for <statement> SELECT PLAN_TABLE_OUTPUT FROM TABLE(DBMS_XPLAN.DISPLAY()); Auto DOP The note structure displaying why Auto DOP did not work (with the exception noted above on IO Calibrate) is like this: Automatic degree of parallelism is disabled: <reason> These are the reason codes: Parameter -  parallel_degree_policy = manual which will not allow Auto DOP to kick in  Hint - One of the following hints are used NOPARALLEL, PARALLEL(1), PARALLEL(MANUAL) Outline - A SQL outline of an older version (before 11.2) is used SQL property restriction - The statement type does not allow for parallel processing Rule-based mode - Instead of the Cost Based Optimizer the system is using the RBO Recursive SQL statement - The statement type does not allow for parallel processing pq disabled/pdml disabled/pddl disabled - For some reason (alter session?) parallelism is disabled Limited mode but no parallel objects referenced - your parallel_degree_policy = LIMITED and no objects in the statement are decorated with the default PARALLEL degree. In most cases all objects have a specific degree in which case Auto DOP will honor that degree. Parallel Degree Limited When Auto DOP does it works you may see the cap you imposed with parallel_degree_limit showing up in the note section of the explain plan: Note -----    - automatic DOP: Computed Degree of Parallelism is 16 because of degree limit This is an obvious indication that your are being capped for this statement. There is one quite interesting one that happens when you are being capped at DOP = 1. First of you get a serial plan and the note changes slightly in that it does not indicate it is being capped (we hope to update the note at some point in time to be more specific). It right now looks like this: Note -----    - automatic DOP: Computed Degree of Parallelism is 1 Dynamic Sampling With 11.2.0.2 you will start seeing another interesting change in parallel plans, and since we are talking about the note section here, I figured we throw this in for good measure. If we deem the parallel (!) statement complex enough, we will enact dynamic sampling on your query. This happens as long as you did not change the default for dynamic sampling on the system. The note looks like this: Note ----- - dynamic sampling used for this statement (level=5)

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• Unity ,gnome-shell ,cinnamon what ever not working

  - by August

  using Ubuntu 12.04 . First it came with Unity , then with a zeal of trying other Desktop Environments and i have installed gnome-shell and no conflicts , works fine.Then i have gone through Lubuntu and Xubuntu as usually . But some panel problem started with Lubuntu raised and i have removed Lubuntu DE from my PC . but that thing got conflicted with my Unity , Gnome and Cinnamon & they are not working . these three are not having only of their Panels . I just see any empty desktop . Currently only KDE and XFCE can run fine with my Ubuntu 12.04.But i want to back with Unity , Gnome and cinnamon also .

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• javac -cp : cannot find symbol problem [migrated]

  - by LivingThing

  I have 3 classes CustomerAddress, Customer and CustomerMain. Customer has a import statement : import org.abc.customers.CustomerAddress; While CustomerMain has an import statement : import org.abc.customers.CustomerAddress; import org.abc.customers.Customer; The package for all of these classes are package org.abc.customer Now, this program works fine on eclipse but when i try to compile and run on cmd prompt it would not compile javac CustomerAddress.java compiles fine then since Customer depends on CustomerAddress i give javac -cp . Customer.java but the compiler complains error cannot find symbol CustomerAddress Thanks

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• The best tile based level design [on hold]

  - by ReallyGoodPie

  My current method for tile based levels is to put everything in an array like the following: grass = g sky = s house = h ... """ ["SSSSSSSSSSSSSSSSSSSSSSSSSSSSSS"], ["SSSSSSSSSSSSSSSSSSSSSSSSSSSSSS"], ["HHHHHHHHHHHHHHSSSSSSSSSSSSSSSS"], ["GGGGGGGGGGGGGGGGGGGGGGGGGGGGGG"], """ I would then run a for loop to pass these on to a sprite class, bliting the images to the screen. This is what I'd generally do in pygame when I am creating levels for a tile based RPG's. However, as I've gone on, I have added allot more sprites and image and it is seriously becoming more and more confusing to work with this and allot of mistakes are being made. What is the best alternative or other methods for doing this?

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• What is the *correct* term for a program that makes use of multiple hardware processor cores?

  - by Ryan Thompson

  I want to say that my program is capable of splitting some work across multiple CPU cores on a single system. What is the simple term for this? It's not multi-threaded, because that doesn't automatically imply that the threads run in parallel. It's not multi-process, because multiprocessing seems to be a property of a computer system, not a program. "capable of parallel operation" seems too wordy, and with all the confusion of terminology, I'm not even sure if it's accurate. So is there a simple term for this?

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• Use gnome custom themes appearance in KDE?

  - by piedro

  Is there a way to get the colors of a gnome custom theme to KDE without matching every single setting manually? (Theres tons of different color settings in the KDE color schemes, most of which I even don't know where they are applied ... I use KDE with compiz to run emerald as windows decorator. Because I really like the "Elementary"-theme. Because my eyes aren't that great I had to tweak the gtk-elementary theme for some additional contrast. I saved it as "elementary-piedro". Now I want to choose this theme in KDE-Systemsettings/appearance/gtk-applications but it doesnt't show the tweaked version? Where is it saved by the normal "gnome appearance preferences"-utility? Is there a way to use the tweaked settings for KDE-applications?

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• Parallelism implies concurrency but not the other way round right?

  - by Cedric Martin

  I often read that parallelism and concurrency are different things. Very often the answerers/commenters go as far as writing that they're two entirely different things. Yet in my view they're related but I'd like some clarification on that. For example if I'm on a multi-core CPU and manage to divide the computation into x smaller computation (say using fork/join) each running in its own thread, I'll have a program that is both doing parallel computation (because supposedly at any point in time several threads are going to run on several cores) and being concurrent right? While if I'm simply using, say, Java and dealing with UI events and repaints on the Event Dispatch Thread plus running the only thread I created myself, I'll have a program that is concurrent (EDT + GC thread + my main thread etc.) but not parallel. I'd like to know if I'm getting this right and if parallelism (on a "single but multi-cores" system) always implies concurrency or not? Also, are multi-threaded programs running on multi-cores CPU but where the different threads are doing totally different computation considered to be using "parallelism"?

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