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• September issue of the Enterprise Manager Indepth Newsletter

  - by Javier Puerta

  The September issue of the Enterprise Manager Indepth Newsletter is now available here  Featured articles include: Oracle OpenWorld Preview: Don't-Miss Sessions, Hands-on Labs, and MoreBecause of the rapid and widespread adoption of Oracle Enterprise Manager 12c since its launch at Oracle OpenWorld 2011, conference organizers are expecting Oracle Enterprise Manager sessions to attract record crowds at Oracle OpenWorld 2012. Read More Oracle Cloud Builder Summit—Zero to Enterprise Cloud in Two HoursIn August, Oracle launched the worldwide Oracle Cloud Builder Summit series, an event where attendees learn firsthand how to plan, deploy, and manage an enterprise private cloud using Oracle Enterprise Manager 12c—all in a few hours. Read More WEBCASTS Reduce Database Testing Efforts While Maximizing ROIWatch this on-demand Webcast demonstrating how to manage database and system changes with confidence using Oracle Real Application Testing. Viewers will be among the first to hear results from Forrester Consulting's commissioned, multicustomer study, “Total Economic Impact of Oracle Real Application Testing.”

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• I try install dhcp3-server, but /etc/init.d/dhcp3-server file is missing. Whats going on?

  - by hydroparadise

  I've found several how-to's that essentially go through the same process in setting up DHCP. Here's a link that has the list of step needed install and setup DHCP. I follow all the steps and find that the sudo /etc/init.d/dhcp3-server restart portion returns command not found only to reveal the the file doesn't even exist. I've installed (sudo apt-get install dhcp3-server) and uninstalled (sudo apt-get remove dhcp3-server) two or three times. I'm pretty sure my config files are good because I've had to check them three times. But I don't think I'm to that point of being able to see them action it. I cant control the process. Why is the file missing? How is it supposed to get there? Help?

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• Mobile traffic of my second site redirected to my base site [Edited,have a look]

  - by Faheem Rasheed

  I have a strange issue with my website and it seems i am unable to understand what cauese the problem.I would highly appreciate your help.The Scenario is I have two websites. Website A Website B Website A is simply hosted within the root directory of my hosting account.Within this root *directory* i have a sub folder " subfolder A " and within which is another subfolder " subfolder B " that contains my site Website B so the path looks like root/sublfolder_A/subfolder_B/ that contains my **Website B ( i.e subfolder_B) ** All goes fine.When i access the website B from my desktop/Laptop Website B is loaded normally. but when i access the Website through a mobile device , mobile site of Website A is loaded while as it should load website_B Also , to let you know , both websites have different URL's and not subdomain's or anything. What could be the problem ? htaccess of website B or website A ? or something else ? Here is the htaccess of my website B RewriteEngine On RewriteRule .* index.php [F] RewriteBase / RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}] RewriteCond %{REQUEST_URI} /component/|(/[^.]*|\.(php|html?|feed|pdf|vcf|raw))$ [NC] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule .* index.php [L]

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• Updating query results

  - by Francisco Garcia

  Within a DDD and CQRS context, a query result is displayed as table rows. Whenever new rows are inserted or deleted, their positions must be calculated by comparing the previous query result with the most recent one. This is needed to visualize with an animation new or deleted rows. The model of my view contains an array of the displayed query results. But I need a place to compare its contents against the latest query. Right now I consider my model view part of my application layer, but the comparison of two query result sets seems something that must be done within the domain layer. Which component should cache a query result and which one compare them? Are view models (and their cached contents) supposed to be in the application layer?

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• How to keep specific old kernel on my next kernel upgrade?

  - by tvrtko

  I just updated my Ubuntu 14.04 and got a new kernel. This new kernel is not working properly for me so I booted the previous version. Let's call this good old working version "3.13.0-24.47". Now, I want to keep this "3.13.0-24.47" version until I decide to delete it manually. I want to be able to upgrade my kernel each time there is a new version in hope of getting the one which works again. Until then, I want to use the "3.13.0-24.47". I'm afraid that next update will delete my "3.13.0-24.47" version because there are only two kernel versions available at a given time on my system (/boot).

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• Results stored in a session - good idea?

  - by Nick

  To give a bit of background, lets say it's a generic results page, which is paginated so there are X results per page. Generally to do this, I have two queries on the page: to get the total number of results to get the results, limiting by the correct page's resultset However, recently I've been trying to cut down on the queries the site is making, and I thought one way to do this would be to only do the query if any parameters to the page have changed (except of course the page number)? This would then cache all the result id's in a session, which can be sliced when I need to return the correct resultset for that page. I was trying to look around the net to see if there are downsides of this method, but I've found very little information about it. Has anyone done this before? Is it a good idea?

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• The Role of High Availability Computing on Business Continuity -- Part 2 of 2

  For organizations that can't afford, sustain or justify downtime -- developing, implementing and testing a high-availability computing strategy is essential. Unplanned downtime affects company reputation, stock price and competitive strategy. It can even delay IT innovation projects necessary for delivering new services to customers. Learn how Oracle's approach to high availability computing is fundamentally different from the traditional model. Hear Oracle Thought Leader Balaji Bashyam (Vice President, Global Database Support) discuss high availability strategy, best practices, and the effects of availability on business, in a question and answer interview format. This podcast is presented in two parts and is intended for an audience of decision makers and influencers.

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• CS4326/7 sound chipset on Thinkpad 600E

  - by user7120

  OK, I know this has been a problem for a while, and I know by now this really old Pentium II laptop is really really really obsolete. However, I have installed Lubuntu 10.10 on this laptop and things seem to work fine except the sound. Now I've read and gone through a bunch of tutorials and guides to working around this, none of which have worked. I have gone through this Ubuntu bug report and that doesn't work either. The problem I think is that the latest workaround is (understandably) about two Ubuntu versions behind. Now I'm not sure what has changed since then to make that workaround not work, but I would appreciate any help. Thanks

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• Controlling the order in which files get processed

  - by [email protected]

  The File/Ftp Adapter allows you to control the order in which files get processed. For example, you might want the files to be processed in order of their modified times/ file sizes etc. Luckily, the File/Ftp adapters allow you to achieve this via a "FileSorter" attribute that you can define in the JCA file for your inbound File/Ftp Adapter service.   The File/Ftp Adapters ship with two predefined sorters that use the last modified times e.g.   However, there are times when you would like to define the order yourself. In situations like this, you can implement a Java Comparator and register the comparator with the File Adapter as described below: 1) Write a comparator. For example, the FileSizeSorter comparator sorts the files in descending order of their sizes:   2) In order to compile this class though, you will need fileAdapter.jar in the classpath.  

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• IIS isn't propagating domain

  - by ErocM

  I called Godaddy and 'verified' my settings for the two ips were correct. ns1.asezo.com = xx.xx.xx.15 ns2.asezo.com = xx.xx.xx.16 then I set the nameserver of asezo.com to the ns1/ns2 above, which Godaddy tech support says is right. When I try to visit my site, it says Oops! Google Chrome could not find asezo.com. When I try to ping the website, it gives me a time out. I have the bindings in IIS for the default website as: http - xx.xx.xx.15 - 80 www.asezo.com and http - xx.xx.xx.15 - 80 asezo.com And I'm still getting nothing. I can go directly to the ip http://xx.xx.xx.15/ and it gives me the IIS default website, I just can't get the url to propagate. What am I doing wrong?

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• Asus A8N-SLI soundcard/headphone not recognized/working

  - by Remon

  I have an Asus A8N-SLI with built-in sound-card which in the front has headset connection. Alsamixer V1.0.25 says Card: HD-Audio Generic Chip:ATI R6xx HDMI. Only option it gives is S/PDIF nothing else. I can only select the Generic sound-card others are not available. It seems it is not being recognized by Ubuntu. My technical skills are limited and I have searched for similar problems but could not find a solution. Any help in how to proceed forward is therefore greatly appreciated. I also have a windows focus problem with Gnome3 and Unity for which I will make a new question. Between those two problems it works like a charm as always. Though I'm only going to upgrade the laptop to 12.04 if I have the desktop running smoothly.

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• Going from webforms, VS 2008, 3.5 framework to the "next level" based on my goals

  - by Caveatrob

  I've got a few choices to make as I develop some business websites that will run for the next two to three years. Currently I run ASP.NET 3.5 with Visual Studio 2008. I do my development rather crudely in WebForms because that's what I learned and am most productive with. I don't use Membership or any other frameworks in my projects. I use a simple class that maintains a few session keys for each user based on basic database tables for users and roles. (I have about 3,000 users). So far I've kept the data simple, using ADO.NET against SQL Server and a data access class (Circa 2000, I know) to build my sites. My questions are as follows: Under what conditions would I be better off moving to MVC? Under what conditions would I find LINQ and ORM a better way to go than standard ADO.NET? Would I benefit, in my current state of development, from going from Studio 2008 to Studio 2010?

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• FatCow and iPage real deal?

  - by Tribbey

  I need a cheap host that I can upgrade if needed for a startup. From searching, FatCow and iPage seem reliable and inexpensive web hosting services with a Unix OS and good bandwidth + disk space. I suspect they were bought from the same company. They propose to offer unlimited bandwidth/disc space and perks like AdSense/Facebook credit however, they're packages range from 1-3 years @ 3.15 USD/mo, there isn't a monthly package but they do allow you to cancel at anytime and there servers run on wind-mill generated energy which is a plus. I was suspicious because I couldnt seem to find one negative review about them, just affiliate pages until I read a review explaining they're strict policies on copywritten data. Has anyone experience with one of these two hosts?

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• Help comparing Cocos2d and Unity3d for this project [closed]

  - by Omega

  I will not go into details, but I would like to hear your opinions about this: Essentially, my project will be a 2d game, with lots of complex levels, where some might be simple and others might be a bit more deep, with physics, etc. We want to implement our very own online structure: logging in, leaderboards, achievements, friends etc with our own servers. This means no OpenFeint nor GameCenter at all. We expect this game to be very large in both graphics and audio. We wish to use in-app purchases. Now, we considered two options. Cocos2d and Unity3d. We need help deciding using the factors I mentioned before (networking, good performance even for a large game in terms of graphics and audio like this, in-app purchases, etc) which option would fit better this? Technically, both options can create 2d games. I'd like to hear your opinion.

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• Gnome 3 freezes when switching workspaces

  - by Bill Cheatham

  I have found an odd problem with Gnome 3 on Ubuntu recently. Under certain circumstances, when switching between two workspaces the whole desktop and user interface will 'freeze' for anything up to 2 minutes; during this time I cannot click anything or interact using the keyboard. Often, the screen will show a 'half-completed' animation of the workspace swapper. This is on Ubuntu 12.04.1 running on a 2-year old Macbook Pro, and it only seems to occur when using an external monitor. This does not seem to be a processor or memory issue, and does not occur every time I switch workspaces. Is this a known problem? What can I do in the short or long term to fix it?

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• The rule of 5 - to use it or not?

  - by VJovic

  The rule of 3 (the rule of 5 in the new c++ standard) states : If you need to explicitly declare either the destructor, copy constructor or copy assignment operator yourself, you probably need to explicitly declare all three of them. But, on the other hand, the Martin's "Clean Code" advises to remove all empty constructors and destructors (page 293, G12:Clutter) : Of what use is a default constructor with no implementation? All it serves to do is clutter up the code with meaningless artifacts. So, how to handle these two opposite opinions? Should empty constructors/destructors really be implemented?

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• Best Strategy for Exact Match Domain (EMD) Along Side Branded Domain

  - by ChrisInCambo

  I lucked out and managed to buy a two word .com EMD for the most important key-phrase for our b2b SaaS startup. Shutting down our branded domain isn't an option, we've already got too much invested in that brand (not in terms of SEO but in terms of other marketing efforts). The brand domain at present hasn't really been optimised for this key-phrase and we haven't invested any effort in SEO to date on that domain, but now we have some resources and want to make a big push for that key-phrase. So what is the best strategy for an EMD when you want already have a branded domain that you don't want to close or have penalised in some way?

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• Install Ubuntu 12.04 on Drive "D"?

  - by Bill Jones

  I have a Dell Inspiron 531S that originally came loaded with Windows Vista. A couple years ago I purchased a copy of Windows 7, formatted the hard drive and installed the updated operating system. In the process I formatted the 10 GB recovery drive partition on drive D as it was no longer needed for Windows Vista. I would really like to install Ubuntu 12.04 LTS alongside Windows 7 using the empty 10 GB drive D:. I have two questions. (1) Can Ubuntu be installed on a separate partition, a drive removed from the boot sector on drive C:? (2) If so would Grub be installed in the boot sector and properly select Windows 7 on drive C: or Ubuntu 12.04 on drive D?

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• Problems after upgrading from 10.04 to 12.04

  - by Paul D

  I upgraded to 12.04.1 from 10.04 recently and am running the Gnome Classic (no effects) desktop. I spent a couple of days tweaking the appearance and behaviour but there are two issues that I can't resolve. The mouse cursor frequently disappears, especially when scrolling through web pages or hovering over links/icons with tooltips. Moving the mouse brings the pointer back but it vanishes again almost immediately. Note I don't have unclutter or Parallels installed. The screen no longer fades to black when left idle for too long - it just cuts out. Bad news when watching content online. Any tips greatly appreciated. Cheers...

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• Shouldn't all source code be plain text? [on hold]

  - by user61852

  Some developing environment/languages save the source code you write in a binary/propietary format that you cannot see or edit with a generic text editor. I'm not talking about compiled code, but the source code. An example could be PowerBuilder and Oracle Forms. It's ok you use proprietary technology if you want, but not being able to open the source code you wrote, in a simple editor, if only to read it, seems like a very strict form of vendor lock-in. Also this prevents you from using text-based version controls that can show you the difference between two versions in a line-by-line base. If the code is plain text, you don't need a license in order to just open it, see it and learn from it. Should it be a golden rule to avoid vendor lock-in to avoid technologies that save your source code to anything but plain text files ?

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• /dev/sda2 contains a filesystem with error after partitioning

  - by Private

  I just wanted to create a separate home partition on my Ubuntu 12.10 system. I booted the liveDVD, resized the sda2 partition (28gb of data resized to 30gb based on MiB [originally on a 100gb partition]) and made a new ext4 partition for the home folder. The drive is an SSD drive. I had changed the settings (noatime etc.) for SSD succesfully a week ago. On reboot I get the following error: /dev/sda2 contains a filesystem with errors Inode 74669 has an invalid extent node (blk 6881289) fsd / [953] terminated with status 4 What would you suggest me to do? If I can avoid a clean install that would save me a lot of time (I had just done all the config). I was following this HOWTO, but I did not get to changing any of the files or configs other than those with gparted. I have a (two-week old) SSD Samsung drive which is functioning just fine (other specs see bottom of this question). Other specs: 64bit 12.10, i7, 8gb ram, nvidia.

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• MySQLwith mutiple threads and processes

  - by Abhan

  I'm developing a telecom messaging platform in C, and I'm going to need multiple processes to be working with MySQL DB. How can I make two processes read/write to/from a Mysql DB and, if/when one of them goes down, get the other to seamlessly take over the work until the dead process gets back to work? I was thinking/googling some options and am stuck in place where I don't know which one to choose. What I think so far is that table lock is not the best option to go for, as it will stall the other process until the table is unlocked. The other option is to use row-level locks or manual locks, but I can't find the best way to do it.

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• Dropbox install stuck at 99%, how do I fix it? (and any dpkg errors)

  - by John

  I tried to install Dropbox using How to install Dropbox?, or with apt-get install nautilus-dropbox. Dropbox loads until 99% and then hangs, causing the system to go to 100% cpu usage. If I reboot or close the terminal, I sometimes get dpkg errors which prevent me from using apt-get or Software Center to perform any package management functions. I would like to resolve all these and just get Dropbox working. How do I do that? Note: This question is possibly answered in two parts: The accepted answer tells you how to install Dropbox. But if you have dpkg errors, see this answer before you use answer 1 to install Dropbox.

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• Is there a debian/ubuntu policy on softlinking things to another location in opt once they're installed?

  - by AbrahamVanHelpsing

  Is there a debian/ubuntu policy on softlinking things to another location in opt once they're installed properly in usr/share or usr/lib? Here's a simple example: Packaging up dnsenum. It's a REALLY simple package (4 files). A perl script, two wordlists, and a readme. So from what I gather: The wordlists should go in usr/share/dnsenum/* The perl script itself would go in usr/lib/dnsenum/ The readme would go in usr/share/doc/dnsenum/ Add a wrapper bash script that goes in bin and just passes arguments to dnsenum.pl. The question is this: If there are various tools that provide wordlists or some other shared resource, is there a policy on linking all the wordlists from different packages in to /opt/wordlists/ ? It seems like the "right" thing to do respecting the directory structure while still making things convenient.

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• How to generate "language-safe" UUIDs?

  - by HappyDeveloper

  I always wanted to use randomly generated strings for my resources' IDs, so I could have shorter URLs like this: /user/4jz0k1 But I never did, because I was worried about the random string generation creating actual words, eg: /user/f*cker. This brings two problems: it might be confusing or even offensive for users, and it could mess with the SEO too. Then I thought all I had to do was to set up a fixed pattern like adding a number every 2 letters. I was very happy with my 'generate_safe_uuid' method, but then I realized it was only better for SEO, and worse for users, because it increased the ratio of actual words being generated, eg: /user/g4yd1ck5 Now I'm thinking I could create a method 'replace_numbers_with_letters', and check that it haven't formed any words against a dictionary or something. Any other ideas? ps. As I write this, I also realized that checking for words in more than one language (eg: english and french, spanish, etc) would be a mess, and I'm starting to love numbers-only IDs again.

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