Search Results

Search found 2004 results on 81 pages for 'sysadmin basics'.

Page 51/81 | < Previous Page | 47 48 49 50 51 52 53 54 55 56 57 58  | Next Page >

• There's A Virtual Developer Day in Your Future

  - by OTN ArchBeat

  What are Virtual Developer Days? You really should know this by now. OTN Virtual Developer Days are online events created specifically for developers and architects, with a focus on no-fluff technical presentations, hands-on labs, and expert Q&A to sharpen your technical skills and bring you up to speed on the latest information on Oracle products and practical best practices for their use. The best part about OTN Virtual Developer Days is that you don't have to pack a suitcase or stand in line at an airport waiting for someone pat you down. Instead, you stay where you are, flip open your laptop, and prepare your brain for a massive skills injection. In the next few weeks you'll have two such chances to ramp up your skills. On Tuesday November 5, 2013 Harnessing the Power of Oracle WebLogic and Oracle Coherence will guide you through tooling updates and best practices for developing applications with WebLogic and Coherence as target platforms. This two-track event covers app design and development (Track 1) and building, deploying, and managing applications (Track 2). Each track includes three presentations plus a hands-on lab. [9am-1pm PT / 12pm-4pm ET / 1pm-5pm BRT] Register now This event will also be available in EMEA on December 3, 2013 {9am-1pm GMT / 1pm-5pm GST / 2:30pm-6:30 PM IST] On Tuesday November 19, 2103 Oracle ADF Development: Web, Mobile, and Beyond offers four tracks covering everything from the basics to advance skills for for application development using Oracle ADF and Oracle ADF Mobile. There are three sessions in each track, followed by hands-on labs in which try out what you've learned. [9am-1pm PT / 12pm-4pm ET/ 1pm-5pm BRT] Register now This event will also be available in APAC on Thursday November 21, 2013 [10am-1:30pm IST (India) / 12:30pm-4pm SGT (Singapore) / 3:30pm-7pm AESDT] and in EMEA on Tuesday November 26, 2013 [9am-1pm GMT / 1pm-5pm GST/ 2:30pm-6:30pm IST] Registration for both events is absolutely free. So what are you waiting for?

  Read the article

• Which is the best free ide/plugin for struts2?

  - by shahensha

  Hello friends, I have just learnt struts 2 and now I have taken up a full fledged project in it. I learnt the basics of struts 2 in Netbeans with it's struts2 plugin. But I am not at all happy with it, as it is very basic and I end up doing most of the work. It is obviously better than plain-vanilla text editor, but still not at all near to what netbeans provides for springs and hibernate. I know because netbeans provides native support for springs and hibernate, it is meant to be better. I don't mind changing my IDE if i get better support for struts2! So my questions are Please list all the free IDEs where native support for struts2 is provided. And if possible please compare them. Please list all the plugins that are available for eclipse for struts2 development. I have heard there are better plugins in eclipse. Also, if there are better plugins in any other IDE (other than netbeans or eclipse of course), please list them giving links. Please give me some tips which I'll need before starting a full blown project in Struts2. I haven't worked on any project on Struts2. I have just finished reading Struts 2 in Action of Manning publications. Thanking you in advance! regards shahensha

  Read the article

• Any non-custom way to manage iptables with fail2ban and libvirt+kvm?

  - by Peter Hansen

  I have an Ubuntu 9.04 server running libvirt/kvm and fail2ban (for SSH attacks). Both libvirt and fail2ban integrate with iptables in different ways. Libvirt uses (I think) some XML config and during startup (?) configures forwarding to the VM subnet. Fail2ban installs a custom chain (probably at init) and periodically modifies it to ban/unban probable attackers. I also need to install my own rules to forward various ports to servers running in VMs and on other machines, and set up rudimentary security (e.g. drop all INPUT traffic except the few ports I want open), and of course I'd like the ability to add/remove rules safely without restarting. It seems to me iptables is a powerful tool that's sorely lacking some sort of standardized way of juggling all this stuff. Every project, and every sysadmin, seems to do it differently! (And I think there's lots of "cargo cult" admin going on here, with people cloning crude approaches like "use iptables-save like so".) Short of figuring out the gory details of exactly how both of these (and potentially other) tools manipulate the netfilter tables, and developing my own scripts or just manually executing iptables commands, is there any way to safely work with iptables while not breaking the functionality of these other tools? Any nascent standards or projects defined to bring sanity to this area? Even a helpful web page I missed that might cover at least these two packages together?

  Read the article

• EBS Customer Relationship Manager (CRM) Product Family Webcasts

  - by user793044

  Oracle's Advisor Webcasts are live presentations given by subject matter experts who deliver knowledge and information about services, products, technologies, best practices and more. Delivered through WebEx the Oracle Advisor Webcast Program brings interactive expertise straight to your desktop, at no cost. Each session is usually followed by a live Q&A where you can have your questions answered. If you miss any of the live webcasts then you can replay the recording or download the PDF of the presentation. Doc Id 740966.1 gives you access to all the scheduled webcasts as well as the archived recordings and presentations. Just select the product family you are interested in to access the latest webcasts in that area. Below is a listing of the currently scheduled archived webcasts for the EBS CRM and Industries product family. Webcast Topic and Description Webcast Link Date and Time Upcoming: Oracle E-Business Suite - Service Oracle Service Charges - Introduction/Overview Register Dec 6, 2012 EBS CRM - Service R12: How to debug Email Center Auto Service Request Creation Failures Recording | .pdf Archived XCALC: Failed Calculations when Using OIC Recording | .pdf Archived XPOP: Failed Population When Using Oracle Incentive August 30, 2012 Recording | .pdf Archived XROLL: Failed Roll Up When Using Oracle Incentive Compensation August 16, 2012 Recording | .pdf Archived Common Problems Associated with Product Catalog in Sales Recording | .pdf Archived Oracle Incentive Compensation - Troubleshooting Payment Issues Recording | .pdf Archived R12 Renewing Service Contracts - Overview Recording | .pdf Archived 11i and R12 Oracle CRM Service Basics and Troubleshooting - an Overview Recording | .pdf Archived 11i and R12 Transaction Error Troubleshooting Overview Recording | .pdf Archived

  Read the article

• Setting up MongoDB in High Performance Computing LSF linux cluster

  - by Dnaiel

  I am trying to run mongo in a LSF cluster computing environment where I have no admin control. Our sysadmin installed mongodb, but it is not running. Any ideas on what should I ask the server admin to do for it to run? Or if I could run it locally? [node1382]allelix> mongod --dbpath /users/dnaiel/ma/mongodb/ Tue Oct 2 21:33:48 [initandlisten] MongoDB starting : pid=22436 port=27017 dbpath=/seq/epigenome01/allelix/ma/mongodb/ 64-bit host=node1382 Tue Oct 2 21:33:48 [initandlisten] Tue Oct 2 21:33:48 [initandlisten] ** WARNING: You are running on a NUMA machine. Tue Oct 2 21:33:48 [initandlisten] ** We suggest launching mongod like this to avoid performance problems: Tue Oct 2 21:33:48 [initandlisten] ** numactl --interleave=all mongod [other options] Tue Oct 2 21:33:48 [initandlisten] Tue Oct 2 21:33:48 [initandlisten] db version v2.2.0, pdfile version 4.5 Tue Oct 2 21:33:48 [initandlisten] git version: f5e83eae9cfbec7fb7a071321928f00d1b0c5207 Tue Oct 2 21:33:48 [initandlisten] build info: Linux ip-10-2-29-40 2.6.21.7-2.ec2.v1.2.fc8xen #1 SMP Fri Nov 20 17:48:28 EST 2009 x86_64 BOOST_LIB_VERSION=1_49 Tue Oct 2 21:33:48 [initandlisten] options: { dbpath: "/users/dnaiel/ma/mongodb/" } Tue Oct 2 21:33:48 [initandlisten] journal dir=users/dnaiel/ma/mongodb/journal Tue Oct 2 21:33:48 [initandlisten] recover begin Tue Oct 2 21:33:48 [initandlisten] info no lsn file in journal/ directory Tue Oct 2 21:33:48 [initandlisten] recover lsn: 0 Tue Oct 2 21:33:48 [initandlisten] recover /seq/epigenome01/allelix/ma/mongodb/journal/j._0 Tue Oct 2 21:33:48 [initandlisten] recover cleaning up Tue Oct 2 21:33:48 [initandlisten] removeJournalFiles Tue Oct 2 21:33:48 [initandlisten] recover done Tue Oct 2 21:33:48 [websvr] admin web console waiting for connections on port 28017 Tue Oct 2 21:33:48 [initandlisten] waiting for connections on port 27017 It basically waits forever and cannot start mongodb. These servers are not webservers but they do have network access, it's a cloud computing LSF environment system. Any advice would be welcome, thanks in advance.

  Read the article

• a VPS mail server

  - by microspino

  Hello I'm trying to substitute citadel on my Virtual Private Server with something more simple. I dislike their documentation and the webmail client. I don't need any groupware feature. I need only an MTA with a nice looking web interface, SPAM and VIRUS check. I recently found the lamson project from Zed Shaw. Is that production ready? Do you had any real and good experience with It? On the latest-news page I see that the last release dates december 2009. Sorry for my lack of knowledge, I'm really new to mail servers but I have to find a solution to manage sending and receiving mail on my VPS. I would accept also to build my VPS email server using a linux system like exim, postfix or whatever but I have really small needs and they will not grow in at least a year and i will be the only one user. I'm searching for something that I could build and manage easily, as I'm a novice linux sysadmin. Having also some good documentation or at least a robust step by step guide would be a plus.

  Read the article

• Creating a Website Without a Framework [closed]

  - by James Jeffery

  I've been using PHP Frameworks for so long that I've actually forgot the "best practices" for create websites without one. Usually I will use Symfony, or more recently I've been using Laravel. A client wants a very simple website, but with certain parts of it dynamic. Due to the nature of the site using Wordpress, or a Framework, is out of the question. I'm a sucker for priding myself on my code, but I feel like I'm asking such a basic question that it's killing me to ask. But, what are the best practices for creating websites without a Framework? I like to live by the K.I.S.S (Keep It Simple Stupid!) method of thinking. So, my idea was to just create the .php pages that are required, do any page processing or database interaction on that page, then have the HTML below the closing PHP tag. I would have any helpers/functions in a functions.php file. This is what I remember doing way before I was using Frameworks, and to me it seems like a very old school way of doing things. I've not created a site without a Framework for literally 2+ years, so I've lost my way with the basics. Any advice would be greatly appreciated.

  Read the article

• OOP oriented PHP app source code samples and advice

  - by abel

  The day I have been dreading has arrived. I never felt OOP or good software design was important(I knew they were important, but I thought I could manage without them.). However having read otherwise almost everywhere on the interwebs, I started dreading the day when my client would ask me for new features in an existing app. The day has come and the pain is unbearable! I have never coded my PHP websites "properly"(PHP is my primary language and the bulk of my work. I am learning Python (using web2py)) I take care that the website doesn't fall apart in a daily use scenario. I code pages like I was creating a list of static html files with bits of "magic code" in each of them(this bugs me a lot). How do I make the whole app more or less a single object? For eg. How do I design the object model for an invoicing app? I use a lot of functions for doing any particular thing in the same fashion throughout the app(for eg. validation, generating ids, calculating taxes etc.). I know the basics of OOP in general. Can anyone point me to source code samples of functional apps written in php? Or can someone provide pointers so I can recode my existing apps in a more modular way.

  Read the article

• Desktop Fun: Snow Covered Trees Wallpaper Collection

  - by Asian Angel

  Trees can become beautiful works of natural art when snow accumulates on them and make you feel as if you have stepped into another world when walking through them. So grab your jacket, gloves, and snowboots for a journey through this frosty scenery with our Snow Covered Trees Wallpaper Collection. Note: Click on the picture to see the full-size image—these wallpapers vary in size so you may need to crop, stretch, or place them on a colored background in order to best match them to your screen’s resolution. For more wallpapers be certain to see our great collections in the Desktop Fun section. Latest Features How-To Geek ETC HTG Projects: How to Create Your Own Custom Papercraft Toy How to Combine Rescue Disks to Create the Ultimate Windows Repair Disk What is Camera Raw, and Why Would a Professional Prefer it to JPG? The How-To Geek Guide to Audio Editing: The Basics How To Boot 10 Different Live CDs From 1 USB Flash Drive The 20 Best How-To Geek Linux Articles of 2010 Arctic Theme for Windows 7 Gives Your Desktop an Icy Touch Install LibreOffice via PPA and Receive Auto-Updates in Ubuntu Creative Portraits Peek Inside the Guts of Modern Electronics Scenic Winter Lane Wallpaper to Create a Relaxing Mood Access Your Web Apps Directly Using the Context Menu in Chrome The Deep – Awesome Use of Metal Objects as Deep Sea Creatures [Video]

  Read the article

• Can't Start SQL Server 2005 Agent - Start/Stop Are Not Enabled

  - by DaveB

  We have a brand new install of SQL Server 2005 on a Windows 2008 Server. When using the SQL Server Management Studio (2005 or 2008) from my Windows XP Professional workstation, if I right click on the SQL Server Agent, I get the context menu but the Start and Stop options are not enabled(grayed out). I am using Windows authentication, I am a member of the SysAdmin and Public SQL Server roles. Also, when right clicking on Maintenance Plans and selecting New Maintenance Plan, nothing happens. I was able to create a maintenance plan with the wizard but now am unable to execute it because SQL Server Agent isn't running? From what I was told by an admin who had access to the server, he was able to login to the box using the domain administrator account and start the SQL Server Agent service from the services applet or from the local instance of SQL Server 2005 Management Studio. Even after he started the service, it still didn't appear to be running from my workstation view through the management studio. What do I need to change to allow me to administer the agent and maintenance plans from my workstation? If I wasn't clear about anything, feel free to ask for clarification.

  Read the article

• Setting Up My Home Network

  - by Skizz

  I currently have five PCs at home, three running WinXP and two running Ubuntu. They are set up like this: ISP ----- Modem ---- Switch ---- Ubuntu1 -- B&W Printer | |--WinXP1 | |--WinXP2 Wireless |--Colour Printer | |---------Ubuntu2 |---------WinXP3 (laptop) The Ubuntu1 machine is set up as a PDC using Samba and runs fetchmail, procmail, dovecot to get my e-mail and allow me to access the e-mail via imap so I can read the e-mail on any PC. I'd like to set up the network like this: ISP ----- Modem ---- Ubuntu1 ---- Switch ------WinXP1 | | |--WinXP2 B&W Printer Wireless |--Colour Printer | |---------Ubuntu2 |---------WinXP3 (laptop) My questions are: How to configure Ubuntu1 to act as a firewall. How to configure Ubuntu1 to provide a consistant user authentication across the network, at the moment Samba provides roaming profiles for the XP machines but the Ubuntu2 machine has it's own user lists. I'd like to have a single authentication for both XP machines and linux machines so that users added to the server list will propagate to all PCs (i.e. new users can log on using any PC without modifying any of the client PCs). How to configure a linux client (Ubuntu2 above) to access files on the server (Ubuntu1), some of which are in user specific folders, effectively sharing /home/{user} per user (read and write access) and stuff like /home/media/photos with read access for everyone and limited write access. How to configure the XP machines (if it is different from a the Samba method). How to set up e-mail filtering. I'd like to have a whitelist/blacklist system for incoming e-mails for some of the e-mail accounts (mainly, my kids' accounts) with filtered e-mails being put into quaranteen until a sysadmin either adds the sender to a blacklist or whitelist. OK, that's a lot of stuff. For now, I don't want config files*, rather, what services / applications to use and how they interact. For example, LDAP could be used for authentication but what else would be useful to make the administration of the LDAP easier. Once I have a general idea for the overall configuration, I can ask other questions about the specifics. Skizz I have looked around for information, but most answers are usually in the form of abstract config files and lists of packages to install.

  Read the article

• ports only available from the outside network

  - by ChrisJ

  This is a counter-intuitive problem for me. I have a new Win 2003 server on a static IP address w.x.y.z. Tomcat 7, PostgreSQL 9.1, and Subversion are installed. All of it appears to be working fine from the server itself. We can also access the Tomcat manager, web applications, and run "svn ls svn://w.x.y.z/" from outside our network. However, when I try from another machine in the office, phpPgAdmin and svn cannot establish connections with the server. http://w.x.y.z:5432/phppgadmin cannot connect. The svn command from above returns: svn: E730061: Unable to connect to a repository at URL 'svn://w.x.y.z/' svn: E730061: Can't connect to host 'w.x.y.z': No connection could be made because the target machine actively refused it. Tomcat manager and the other web apps we have deployed work fine. Netstat -a from the server shows this: Proto Local Address Foreign Address State TCP SERVERNAME:3690 SERVERNAME:0 LISTENING TCP SERVERNAME:5432 SERVERNAME:0 LISTENING Windows Firewall was off, but just in case I also tried to enable it and open ports 3690 (svn) and 5432 (postgres). No change. I don't have access to the router/switch because it just doesn't work that way in Port-au-Prince and our sysadmin is on R&R. Is there anything that might be causing the problem from the server side?

  Read the article

• Stacks in C++

  - by MarkPearl

  So some more basics… One of the things you will be taught at any college after conquering arrays is different derivatives of collections. Stack is one of the simplest of those and very useful… A stack is a LIFO (last in first out) data structure and has at least two basic method calls – push & pop. Push, “pushes” an item on the top of the stack. Pop, removes the top most item off the stack. Because all elements on a stack are of the same type, one can use an array to implement a stack or a linked list. With the array based approach, the first element in a stack would be the first element in the array, the second on the stack would be the second on the array, etc. One limitation with an array implementation of a stack is that unless the array is dynamic, one would have to have a preset max stack size (based on the bounds of the array). Linked lists is another approach that gets past this boundary by allowing you to dynamically grow or shrink a collection of data. Stacks have many applications… a typical computer science example would be Postfix Expression Calculator, where the LIFO principle is maintained.

  Read the article

• Am I wrong to disagree with A Gentle Introduction to symfony's template best practices?

  - by AndrewKS

  I am currently learning symfony and going through the book A Gentle Introduction to symfony and came across this section in "Chapter 4: The Basics of Page Creation" on creating templates (or views): "If you need to execute some PHP code in the template, you should avoid using the usual PHP syntax, as shown in Listing 4-4. Instead, write your templates using the PHP alternative syntax, as shown in Listing 4-5, to keep the code understandable for non-PHP programmers." Listing 4-4 - The Usual PHP Syntax, Good for Actions, But Bad for Templates <p>Hello, world!</p> <?php if ($test) { echo "<p>".time()."</p>"; } ?> (The ironic thing about this is that the echo statement would look even better if time was a variable declared in the controller because then you could just embed the variable in the string instead of concatenating) Listing 4-5 - The Alternative PHP Syntax, Good for Templates <p>Hello, world!</p> <?php if ($test): ?> <p><?php echo time(); ?> </p><?php endif; ?> I fail to see how listing 4-5 makes the code "understandable for non-PHP programmers", and its readability is shaky at best. 4-4 looks much more readable to me. Are there any programmers who are using symfony that write their templates like those in 4-4 rather than 4-5? Are there reasons I should use one over the other? There is the very slim chance that somewhere down the road someone less technical could be editing it the template, but how does 4-5 actually make it more understandable to them?

  Read the article

• How programmers can afford to NOT learn new things.

  - by newbie

  Good day! I am wondering how programmers learn many things because as a career shifter (from engineering to IT), I find it really hard to absorb everything. Three months ago, I learned HTML/CSS/Javascript. Two months ago, I learned mySQL and CCNA1. One month ago I learned C and Java. Now I am trying to learn J2EE. But it seems that I must combine everything I learned then add more into my brain (especially because J2EE is HUGE! -- XML, servlets, JSP, JSTL, EJB, frameworks(Hibernate, Structs, Spring), JDBC... and so on!!!) So I am wondering, how can programmers learn everything, then add something new without being confused of everything! Because Right now, I feel like my brain is going to explode because of information overload! And these knowledge I am trying to acquire are just the BASICS of programming (icing on the cake)! I still need to learn MORE to become a good programmer! And new technology emerges now and then that requires programmers to learn more again.. Learn.. learn.. learn... Any suggestions on how you as a programmer fit all you've learned into your brain? And how do you know which is the right thing for you to learn? Aren't you afraid that what you've learned may be obsolete next year then start learning again...?

  Read the article

• Where to go after having a good grasp of a language?

  - by Alex M.

  I have been programming as a hobby for the past few years now (most of high school and 1 year in cs in college) and although I've came to the conclusion that a career in CS isn't for me I switched over to math (which pairs what I love about programming with my interest in physical sciences) but I miss writing code. Recently I've had an interest in low-level programming. Understanding how compilers work, learning some basics of assembly language and trying to get out of my comfort zone. The problem is that since I've been out of the CS programs, I'm not faced with much opportunities to write code. I do intend to take a few CS classes in college (a lot of CS stuff is opened to math majors) but that won't come for until next year. So I ask: What are the steps to take in order to keep improving as a programmer once you're passed the basic steps? How do you find projects to keep you going? Beside my newly discovered interest in assembly language, I've been writing code in C and have been interested in FOSS. Thanks!

  Read the article

• Web Hosting Checklist

  - by Chris

  Hello, 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.

  Read the article

• looking for a short explanation of fuzzy logic

  - by user613326

  Well i got the idea that basics of fuzzy logic are not that hard to grasp. And i got the feeling that someone might explain it to me in like 30 minutes. Just like i understand neural networks and am able to re-create the famous Xor problem. And go just beyond it and create 3 layer networks of x nodes. I'd like to understand fuzzy till a similar usefully level, in c# language. However the problem is face, I'd like to get concept right however i see many websites who include lots of errors in their basic explaining. Like for example showing pictures and use different numbers as shown in pictures to calculate, as if lots of people just copied stuff without noticing what they write down. While others for me go to deep in their math notation) To me that's very annoying to learn from. For me there is no need to re-invent wheel; Aforge already got a fuzzy logic framework. So what i am looking for are some good examples, good examples like how the neural XOR problem is solved. Is there anyone such a instructional resource out there; do you know a web page, or YouTube where it is shortly explained, what would you recommend me ? Note this article comes close; but it just doesnt nail it for me. After that i downloaded a bunch of free PDF's but most are academic and hard to read for me (i'm not English and dont have a special math degree). (i've been looking around a lot for this, good starter material about it is hard to find).

  Read the article

• Enable gzip on Nginx

  - by Rob Wilkerson

  Yes, I know that there are a lot of other questions that seem exactly like this out there. I think I must've looked all of them. Twice. In desparation, I'm adding another in case my specific configuration is the issue. Bear with me. First, the question: What do I need to do to get gzip compression to work? I have an Ubuntu 12.04 server installed running nginx 1.1.19. Nginx was installed with the following packages: nginx nginx-common nginx-full The http block of my nginx.conf looks like this: http { include /etc/nginx/mime.types; access_log /var/log/nginx/access.log; sendfile on; keepalive_timeout 65; tcp_nodelay on; gzip on; gzip_disable "msie6"; include /etc/nginx/conf.d/*.conf; include /etc/nginx/sites-enabled/*; } Both PageSpeed and YSlow are reporting that I need to enable compression. I can see that the request headers indicate Accept-Encoding:gzip,deflate,sdch, but the response headers do not have the corollary Content-Encoding header. I've tried various other config values (gzip_vary on, gzip_http_version 1.0, etc.), but no joy. As far as I know, I can only assume that nginx was compiled with compression support, but if there's any way to verify that, I'd love to know. If anyone sees anything I'm missing or can suggest further debugging, please let me know. I'm no sysadmin and I'm new to Nginx so I've exhausted everything I can think of or have read. Thanks.

  Read the article

• ArchBeat Link-o-Rama for December 4, 2012

  - by Bob Rhubart

  Exalogic 2.0.1 Tea Break Snippets - Creating and using Distribution Groups | The Old Toxophilist "Although in many cases we, as Cloud Users, may not be to worried how the Virtualisation Algorithm decides where to place our vServers," says The Old Toxopholist, "there are cases where it is extremely important that vServers run on distinct physical compute nodes." There's plenty more on the subject in his blog post. Oracle Endeca (2.3) Record Level Security | Adam Seed Adam Sneed's blog post covers "the basics of security within Endeca Information Discovery, as these basic security objects are required in order to explain the implementation of record level security." ODI Handling DQ | Gurcan Orhan Oracle ACE Director Gurcan Orhan suggests you have fun with these scripts for Oracle Data Integrator. Parleys Testimonial at GlassFish Community Event - JavaOne 2012 Video of Parley's webmaster Stephan Janssen's presentation at the GlassFish Community Event at JavaOne 2012, in which he explains why Parley's moved from Tomcat to GlassFish. Java Spotlight Episode 109: Pete Muir on CDI 1.1 This edition of Roger Brinkley's Java Spotlight Podcast features an interview with CDI 1.1 spec lead Pete Muir of JBoss/Red Hat. Muir talks about the features in CDI 1.1 and what to expect in the future. Webcast: Java Management Extensions with Oracle WebLogic Server 12c Dr. Frank Munz and Dave Cabelus do the talking in this on-demand webcast focused on Oracle WebLogic Server 12c with Java Management Extensions (JMX). Using the Coherence API to get Portable Object Format bytes | Bruno Borges Bruno Borges shares a code snippet that illustrates how easy it is to use the Coherence API. Thought for the Day "Experience is something you don't get until just after you need it." — Anonymous Source: SoftwareQuotes.com

  Read the article

• Find meeting point of 2 objects in 2D, knowing (constant) speed and slope

  - by Axonn

  I have a gun which fires a projectile which has to hit an enemy. The problem is that the gun has to be automatic, i.e. - choose the angle in which it has to shoot so that the projectile hits the enemy dead in the center. It's been a looooong time since school, and my physics skills are a bit rusty, but they're there. I've been thinking to somehow apply the v = d/t formula to find the time needed for the projectile or enemy to reach a certain point. But the problem is that I can't find the common point for both the projectile and enemy. Yes, I can find a certain point for the projectile, and another for the enemy, but I would need lots of tries to find where the point coincides, which is stupid. There has to be a way to link them together but I can't figure it out. I prepared some drawings and samples: A simple version of my Flash game, dumbed down to the basics, just some shapes: http://axonnsd.org/W/P001/MathSandBox.swf - click the mouse anywhere to fire a projectile. Or, here is an image which describes my problem: So... who has any ideas about how to find x3/y3 - thus leading me to find the angle in which the weapon has to tilt in order to fire a projectile to meet the enemy? EDIT I think it would be clearer if I also mention that I know: the speed of both Enemy and Projectile and the Enemy travels on a straight vertical line.

  Read the article

• Collision Detection with SAT: False Collision for Diagonal Movement Towards Vertical Tile-Walls?

  - by Macks

  Edit: Problem solved! Big thanks to Jonathan who pointed me in the right direction. Sean describes the method I used in a different thread. Also big thanks to him! :) Here is how I solved my problem: If a collision is registered by my SAT-method, only fire the collision-event on my character if there are no neighbouring solid tiles in the direction of the returned minimum translation vector. I'm developing my first tile-based 2D-game with Javascript. To learn the basics, I decided to write my own "game engine". I have successfully implemented collision detection using the separating axis theorem, but I've run into a problem that I can't quite wrap my head around. If I press the [up] and [left] arrow-keys simultaneously, my character moves diagonally towards the upper left. If he hits a horizontal wall, he'll just keep moving in x-direction. The same goes for [up] and [left] as well as downward-diagonal movements, it works as intended: http://i.stack.imgur.com/aiZjI.png Diagonal movement works fine for horizontal walls, for both left and right-movement However: this does not work for vertical walls. Instead of keeping movement in y-direction, he'll just stop as soon as he "enters" a new tile on the y-axis. So for some reason SAT thinks my character is colliding vertically with tiles from vertical walls: http://i.stack.imgur.com/XBEKR.png My character stops because he thinks that he is colliding vertically with tiles from the wall on the right. This only occurs, when: Moving into top-right direction towards the right wall Moving into top-left direction towards the left wall Bottom-right and bottom-left movement work: the character keeps moving in y-direction as intended. Is this inherited from the way SAT works or is there a problem with my implementation? What can I do to solve my problem? Oh yeah, my character is displayed as a circle but he's actually a rectangular polygon for the collision detection. Thank you very much for your help.

  Read the article

• Beginning with shell scripting

  - by Kevin Wyman

  I am fresh into Ubuntu and one of my goals is shell scripting for personal (and maybe public) use. I'm a novice, though I do understand some of the basics (e.g. what a variable, string, loop, etc... is) but to get the most of scripting I need to learn in-depth. I figure the best way to do that is to jump right into scripting and ask questions only pertinent to the stage I am at in my attempted script. Scenario: I have edited my sudoers file to allow my non-root user to run sudo commands without being prompted for a password. Question: In vim, what would be the best code to use for a function that checks whether this condition is [true], If not, prompt the user if they want the script to edit and save the sudoers file to make this condition [true]? Layout - If condition is true, carry-on with rest of script. If condition is not true, the script silently edits/adds the line: %sudo ALL=(ALL:ALL) NOPASSWD: ALL in the sudoers file, saves and then continues on with the next part of the script. Any help with this would be greatly appreciated and assist me in my journey to writing shell scripts.

  Read the article

• Software to monitor bill payment to mission critical IT service providers (ISP, DNS etc.)

  - by Sholom

  Hi All, The Problem: Our very likable but absent minded bookkeeper keeps neglecting to pay our IT vendors on time. Just this past week our internet service was disconnected. Same could happen to many other mission critical accounts (domain registrar, backup MX, anti-virus license, HackerSafe (McAfee secure) service and even an 800 number to name a few). As the sysadmin, i monitor my severs to make sure they are plugged into the power-outlet. I believe i should also monitor my services to make sure they are plugged in to their money-outlet. To compound the problem, when the power goes out someone else will likely notice and notify me. But if a bill is not payed, no one will ever notice until service is lost. Lost as in losing our domain name which would cause a lot more damage then the power failing on our server. [Solution] = [Doesn't work because]: Retrain the bookkeeper = Wishful thinking. Notify my manager = Already have (via email). Protects me, does not solve problem. Fire bookkeeper = What makes you so sure the next one will never forget? Bottom line: Humans are humans and sooner or later something critical will be royally messed up. We need to partner with a machine to help us out here. Anybody have the same problem? What software/solution do you use? I would like software that emails me when a bill is passed due just like i get an email when the power outlet fails. Anyone hear of anything like that? Thanks

  Read the article

• Scene graphs and spatial partitioning structures: What do you really need?

  - by tapirath

  I've been fiddling with 2D games for awhile and I'm trying to go into 3D game development. I thought I should get my basics right first. From what I read scene graphs hold your game objects/entities and their relation to each other like 'a tire' would be the child of 'a vehicle'. It's mainly used for frustum/occlusion culling and minimizing the collision checks between the objects. Spatial partitioning structures on the other hand are used to divide a big game object (like the map) to smaller parts so that you can gain performance by only drawing the relevant polygons and again minimizing the collision checks to those polygons only. Also a spatial partitioning data structure can be used as a node in a scene graph. But... I've been reading about both subjects and I've seen a lot of "scene graphs are useless" and "BSP performance gain is irrelevant with modern hardware" kind of articles. Also some of the game engines I've checked like gameplay3d and jmonkeyengine are only using a scene graph (That also may be because they don't want to limit the developers). Whereas games like Quake and Half-Life only use spatial partitioning. I'm aware that the usage of these structures very much depend on the type of the game you're developing so for the sake of clarity let's assume the game is a FPS like Counter-Strike with some better outdoor environment capabilities (like a terrain). The obvious question is which one is needed and why (considering the modern hardware capabilities). Thank you.

  Read the article

< Previous Page | 47 48 49 50 51 52 53 54 55 56 57 58  | Next Page >