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• Running programs in cache and registers

  - by OSX NINJA

  In my operating systems class we were shown a picture depicting a hierarchy of memory starting from most expensive and fastest at the top and least expensive and slowest at the bottom. At the very top was registers and underneath it was cache. The professor said that the best place to run programs is in cache. I was wondering why programs can't be run in registers? Also, how can a program load itself into cache? Isn't the cache something that's controlled by the CPU and works automatically without software control?

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• What is the standard place for static library files on Unix/Ubuntu

  - by Max

  Hi, I am trying to install a library manually, well actually just put it in a sensible location preferably in my LIB path. I have a lib[...].a file and a bunch of headers pertaining to that static library file. If I look under /usr/lib/ I see only .so files, likewise for /lib/, /lib32/ etc. I figure I could chuck it in there, but is there any place where it can get cozy with other .a files or is that as good place as any? I'm not an library expert, but I'm pretty sure it won't matter functionally, but I'd like to learn conventional best practice. Also, where is the standard place to put the headers? Thanks!

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• Webcast Tomorrow: Securing the Cloud for Public Sector

  - by Darin Pendergraft

  Securing the Cloud for Public Sector Click here, to register for the live webcast. Cloud computing offers government organizations tremendous potential to enhance public value by helping organizations increase operational efficiency and improve service delivery. However, as organizations pursue cloud adoption to achieve the anticipated benefits a common set of questions have surfaced. “Is the cloud secure? Are all clouds equal with respect to security and compliance? Is our data safe in the cloud?” Join us December 12th for a webcast as part of the “Secure Government Training Series” to get answers to your pressing cloud security questions and learn how to best secure your cloud environments. You will learn about a comprehensive set of security tools designed to protect every layer of an organization’s cloud architecture, from application to disk, while ensuring high levels of compliance, risk avoidance, and lower costs. Discover how to control and monitor access, secure sensitive data, and address regulatory compliance across cloud environments by: providing strong authentication, data encryption, and (privileged) user access control to ensure that information is only accessible to those who need it mitigating threats across your databases and applications protecting applications and information – no matter where it is – at rest, in use and in transit For more information, access the Secure Government Resource Center or to speak with an Oracle representative, please call1.800.ORACLE1. LIVE Webcast Securing the Cloud for Public Sector Date: Wednesday, December 12, 2012 Time: 2:00 p.m. ET Visit the Secure Government Resource CenterClick here for information on enterprise security solutions that help government safeguard information, resources and networks. ACCESS NOW Copyright © 2012, Oracle. All rights reserved. Contact Us | Legal Notices | Privacy Statement

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• What's the easiest way to migrate one Mac OS X volume to another

  - by teabot

  I want to move a volume from a smaller drive to a larger unformatted one. What is the best way to achieve this? Ideally I'd like the new volume to have the same name as the older volume as it contains user accounts, and is a destination of various symlinks that I have on other volumes. Update: I used Carbon Copy Cloner in the end and it worked perfectly. I was able to simply rename the new volume in Finder to the same name as the old volume and then powered down and removed the old drive on which the volume lived. When I restarted, the new volume seamlessly worked in place of the old volume.

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• Does DirectX implement Triple Buffering?

  - by Asik

  As AnandTech put it best in this 2009 article: In render ahead, frames cannot be dropped. This means that when the queue is full, what is displayed can have a lot more lag. Microsoft doesn't implement triple buffering in DirectX, they implement render ahead (from 0 to 8 frames with 3 being the default). The major difference in the technique we've described here is the ability to drop frames when they are outdated. Render ahead forces older frames to be displayed. Queues can help smoothness and stuttering as a few really quick frames followed by a slow frame end up being evened out and spread over more frames. But the price you pay is in lag (the more frames in the queue, the longer it takes to empty the queue and the older the frames are that are displayed). As I understand it, DirectX "Swap Chain" is merely a render ahead queue, i.e. buffers cannot be dropped; the longer the chain, the greater the input latency. At the same time, I find it hard to believe that the most widely used graphics API would not implement such fundamental functionality correctly. Is there a way to get proper triple buffered vertical synchronisation in DirectX?

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• Multitenant Design for SQL Azure: White Paper Available

  - by Herve Roggero

  Cloud computing is about scaling out all your application tiers, from web application to the database layer. In fact, the whole promise of Azure is to pay for just what you need. You need more IIS servers? No problemo... just spin another web server. You expect to double your storage needs for Azure Tables? No problemo; you are covered there too... just pay for your storage needs. But what about the database tier, SQL Azure? How do you add new databases easily, and transparently, so that your application simply uses more of SQL Azure if its needs to? Without changing a single line of code? And what if you need to scale back down? Welcome to the world of database scalability. There are many terms that describe database scalability, including data federation, multitenant designs, and even NoSQL depending on the technical solution you are implementing.  Because SQL Azure is a transactional database system, NoSQL is not really an option. However data federation and multitenant designs offer some very interesting scalability options that are worth considering. Data federation, a feature of SQL Azure that will be offered in the future, offers very interesting capabilities available natively on the SQL Azure platform. More to come in a few weeks... Multitenant designs on the other hand are design practices and technologies designed to help you reach flexible scalability options not available otherwise. The first incarnation of such a method was made available on CodePlex as an open source project (http://enzosqlshard.codeplex.com).  This project was an attempt to provide a sharding library for educational purposes.  All that sounds really cool... and really esoteric... almost a form of database "voodoo"... However after being on multiple Azure projects I am starting to see a real need. Customers want to be able to free themselves from the database tier, so that if they have 10 new customers tomorrow, all they need to do is add 2 more SQL Azure instances. It's that simple. How you achieve this, and suggested application design guidelines, are available in a white paper I just published.  The white paper offers two primary sections. The first section describes the business and technical problem at hand, and how to classify it according to specific design patterns. For example, I discuss compressed shards through schema separation. The second section offers a method for addressing the needs of a multitenant design using a new library, the big bother of the codeplex project mentioned previously (that I created earlier this year), complete with management interface and such. A Beta of this platform will be made available within weeks; as soon as the documentation will be ready.   I would like to ask you to drop me a quick email at [email protected] if you are going to download the white paper. It's not required, but it would help me get in touch with you for feedback.  You can download this white paper here:   http://www.bluesyntax.net/files/EnzoFramework.pdf . Thank you, and I am looking for feedback, thoughts and implementation opportunities.

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• Convert MP3 to AAC,FLAC to AAC (.NET/C#) FREE :)

  - by PearlFactory

  So I was tasked with looking at converting 10 million tracks from mp3 320k to AAC and also Converting from mp3 320k to mp3 128k After a bit of hunting around the tool you need to use is FFMPEG Download x64 WindowsAlso for the best results get the Nero AACEncoder Download Now the command line STEP 1(From Flac)ffmpeg -i input.flac -f wav - | neroAacEnc -ignorelength -q 0.5 -if - -of output.m4aor (From mp3)ffmpeg -i input.mp3 -f wav - | neroAacEnc -ignorelength -q 0.5 -if - -of output.m4aNow the output.m4a is a intermediate state that we now put a ACC wrapper on via FFMpeg STEP 2ffmpeg -i output.m4a -vn -acodec copy final.aacDone :) There are a couple of options with the FFMPEG library as in we can look at importing the librarys and manipulation the API for the direct result FFMPEG has this support. You can get the relevant librarys from HereThey even have the source if you are that keen :-)In this case I am going to wrap the command lines into c# external process threads.( For the app that i am building to convert the 10 million tracks there is a complex multithreaded app to support this novel code )//Arrange Metadata about Call Process myProcess = new Process();ProcessStartInfo p = new ProcessStartInfo();string sArgs = string.format(" -i {0} -f wav - | neroAacEnc -ignorelength -q 0.5 -if - -of {1}",inputfile,outputfil) ; p.FileName = "ffmpeg.exe" ; p.CreateNoWindow = true; p.RedirectStandardOutput = true; //p.WindowStyle = ProcessWindowStyle.Normal p.UseShellExecute = false;//Execute p.Arguments = sArgs; myProcess.StartInfo = p; myProcess.Start(); myProcess.WaitForExit();//Write details about call  myProcess.StandardOutput.ReadToEnd();Now in this case we would execute a 2nd call using the same code but with different sArgs to put the AAC wrapper on the m4a file. Thats it. So if you need to do some conversions of any kind for you ASP.net sites/apps this is a great start and super fast.. With conversion times of around 2-3 seconds all of this can be done on the fly:-)Justin Oehlmannref : StackOverflow.com

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• Perl script segfaulting after 64-bit upgrade

  - by Brent

  I recently upgraded a 32-bit Debian server to 64-bit by re-installing, and copying my data into place. After this I have a perl script that repeats the following, and is segfaulting on the tell line: seek(FIN,$ps,0); tell(FIN, $ps); $line=<FIN>; I don't speak perl, so I'm not sure exactly what is going on here. I can get the script to run (apparently successfully) by commenting every occurrence of tell, but this is obviously not the best solution. I suspect that tell is calling a 32-bit binary or something, and that is the cause of the segfault - but I don't know. Can someone explain what tell does, and if it is indeed a separate binary, what package it belongs to (or how it is installed ie. cpan)? Or perhaps I am on the wrong track?

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• crunchbang: it takes up *how* much memory?!?!

  - by Theo Moore

  I've been trying many distros of Linux lately, trying to find something I like for my netbook. I started out with Ubuntu, and I can tell you I am a big fan. Ubuntu is now fast to install, much simpler to administer, and pretty light resource-wise. My original install was the standard 32 bit version of 9.04. I tried the netbook remix version of this release, but it was very, very slow. Even the full-blown version used only about 200mb. Much better than the almost 800 that the recommended Windows y version took. Once the newest release of Ubuntu was released, I decided to try the netbook remx of 10.04. It used even less RAM; only about 150mb. I thought I'd found my OS. I certainly settled in and prepared to use it forever. Then, someone I know suggested I try cunchbang. It is the most minimalistic UI I've ever seen, using Openbox rather than Gnome or KDE. Very slick, simple and clean. Since I am using the alpha of the most recent version (using Debian Squeeze), the apps provided for you are few...although more will be provided soon. You do have a word processor, etc., although not the OpenOffice you would normally get in Ubuntu. But the best part? 48MB. That's it. 48mb fully loaded, supporting what I can "hotel services". It's fast, boots quick, and believe it or not, I can even do Java-based development....on my netbook! Pretty slick.   More on it as I use it.

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• Displaying device contacts with an indication that the contact is registered to the app

  - by Prasanna Aarthi

  We are developing a mobile app that needs to pick up device contacts, display them and indicate if the contact has already registered with this app. We have our DB in the server and the app fetches data using web services. What will be the best approach to implement the above scenario taking performance into consideration. Option 1: Every time user opens the app,fetch the contacts and send the list of email addresses to the server, check with the registered email ids and return the list of registered users in the contact list. In this approach whenever user opens the particular page, he needs to wait for few seconds to load data, but the contacts will be the latest from the device. Option 2: First time when the user opens the app, fetch contacts ,send the entire list of contacts and save it in the DB, retrieve list of registered users in the contacts then save this to local DB. From now on, data will be fetched from local DB and displayed. When a new user registers in the app, again check with records in central DB and send list of new users who are in your contacts that have registered to your app. This list will be added to local DB. and the process continues. In this case the new contacts added by user will not be updated in the app but retrieval and display of records would be quick. What would be the correct approach? In case there is a better way of doing this, please let me know.

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• Talking JavaOne with Rock Star Charles Nutter

  - by Janice J. Heiss

  JavaOne Rock Stars, conceived in 2005, are the top rated speakers from the JavaOne Conference. They are awarded by their peers who through conference surveys recognize them for their outstanding sessions and speaking ability. Over the years many of the world’s leading Java developers have been so recognized.We spoke with distinguished Rock Star, Charles Nutter. A JRuby Update from Charles NutterCharles Nutter of Red Hat is well known as a lead developer of JRuby, a Ruby implementation of Java that is tightly integrated with Java to allow for the embedding of the interpreter into any Java application with full two-way access between the Java and the Ruby code. Nutter is giving the following sessions at this year’s JavaOne: CON7257 – “JVM Bytecode for Dummies (and the Rest of Us Too)” CON7284 – “Implementing Ruby: The Long, Hard Road” CON7263 – “JVM JIT for Dummies” BOF6682 – “I’ve Got 99 Languages, but Java Ain’t One” CON6575 – “Polyglot for Dummies” (Both with Thomas Enebo) I asked Nutter, to give us the latest on JRuby. “JRuby seems to have hit a tipping point this past year,” he explained, “moving from ‘just another Ruby implementation’ to ‘the best Ruby implementation for X,’ where X may be performance, scaling, big data, stability, reliability, security, and a number of other features important for today's applications. We're currently wrapping up JRuby 1.7, which improves support for Ruby 1.9 APIs, solves a number of user issues and concurrency challenges, and utilizes invokedynamic to outperform all other Ruby implementations by a wide margin. JRuby just gets better and better.” When asked what he thought about the rapid growth of alternative languages for the JVM, he replied, “I'm very intrigued by efforts to bring a high-performance JavaScript runtime to the JVM. There's really no reason the JVM couldn't be the fastest platform for running JavaScript with the right implementation, and I'm excited to see that happen.”And what is Nutter working on currently? “Aside from JRuby 1.7 wrap-up,” he explained, “I'm helping the Hotspot developers investigate invokedynamic performance issues and test-driving their new invokedynamic code in Java 8. I'm also starting to explore ways to improve the general state of dynamic languages on the JVM using JRuby as a guide, and to help the JVM become a better platform for all kinds of languages.” Originally published on blogs.oracle.com/javaone.

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• Standards for how developers work on their own workstations

  - by Jon Hopkins

  We've just come across one of those situations which occasionally comes up when a developer goes off sick for a few days mid-project. There were a few questions about whether he'd committed the latest version of his code or whether there was something more recent on his local machine we should be looking at, and we had a delivery to a customer pending so we couldn't wait for him to return. One of the other developers logged on as him to see and found a mess of workspaces, many seemingly of the same projects, with timestamps that made it unclear which one was "current" (he was prototyping some bits on versions of the project other than his "core" one). Obviously this is a pain in the neck, however the alternative (which would seem to be strict standards for how each developer works on their own machine to ensure that any other developer can pick things up with a minimum of effort) is likely to break many developers personal work flows and lead to inefficiency on an individual level. I'm not talking about standards for checked-in code, or even general development standards, I'm talking about how a developer works locally, a domain generally considered (in my experience) to be almost entirely under the developers own control. So how do you handle situations like this? Are the one of those things that just happens and you have to deal with, the price you pay for developers being allowed to work in the way that best suits them? Or do you ask developers to adhere to standards in this area - use of specific directories, naming standards, notes on a wiki or whatever? And if so what do your standards cover, how strict are they, how do you police them and so on? Or is there another solution I'm missing? [Assume for the sake of argument that the developer can not be contacted to talk through what he was doing here - even if he could knowing and describing which workspace is which from memory isn't going to be simple and flawless and sometimes people genuinely can't be contacted and I'd like a solution which covers all eventualities.]

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• Mobility Card in Bangalore for Transportation

  - by Rekha

  Transport Minister R Ashoka announced Bangalore Metropolitan Transport Corporation (BMTC) services are going to be best in the world soon. BMTC has planned to launch a Mobility Card with which commuters can get rides in BMTC, KSRTC and future Metro Train facilities without buying tickets for each ride. The conductor with have a simple device in which the commuters can swipe their cards to deduct the ticket tarrif for bus or metro rides automatically. This Mobility card can be obtained by paying a fixed amount. This method is time saving and the commuters can be saved from paying the exact change for tickets. Ashoka says the Volvo Vayu Vaira services have internet connectivity and voice announcements of every bus stop names and this has been appreciated by the commuters. With WiFi Connections in Shatabdi Trains soon and Mobility Cards, India is soon to match the services of US Standards. Government officials are keen in implementing these services before the end of this year. Hope all these services are well used and maintained.   This article titled,Mobility Card in Bangalore for Transportation, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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• Google local search rankings is it possible without the use of citations

  - by bybe

  I have a client that is wanting a website design for his self-run business... Basically he is a self employed plumber so his home address is not visitable by the public, however the problem here is that he does not want his home address visible on the internet at all for one reason or another. I have informed him the benefits of having his address visible for such reasons as trust by customers as well as the benefits via Google's local search algorithms (Citations - Visible Address Details) on various directories including Google Maps, and Google Places. But he is clear that he does not want his address online and wants SEO + Web Design without any citations. Now, I care about my reputation in my local area and do not like do half-cut jobs, If I do SEO I want them to be the best they can otherwise word of mouth that customer could say to someone else after my services they are no where to be seen, (I know you can't keep them all happy but none the less). This is kinda new for me since Google introduced local rankings and something I've never had to do... So my question is fairly simple and hope that people who reply have some kind of experience in attempting ranking websites locally without citations.. Is it even possible to rank a local website with Google's local algorithms without the use of citations (address information)?

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• Good Laptop .NET Developer VM Setup

  - by Steve Brouillard

  I was torn between putting this question on this site or SuperUsers. I've tried to do a good bit of searching on this, and while I find plenty of info on why to go with a VM or not, there isn't much practical advise on HOW to best set things up. Here's what I currently HAVE: HP EliteBook 1540, quad-core, 8GB memory, 500GB 7200 RPM HD, eSATA port. Descent machine. Should work just fine. Windows 7 64-bit Host OS. This also acts as my day-to-day basic stuff (email, Word Docs, etc...) OS. VMWare Desktop Windows 7 64-bit Guest OS with all my .NET dev tools, frameworks, etc loaded on it. It's configured to use 2 cores and up to 6GB of memory. I figure that the dev env will need more than email, word, etc... So, this seemed like a good option to me, but I find with the VM running, things tend to slow down all around on both the host and guest OS. Memory and CPU utilization don't seem to be an issue, but I/O does. I tried running the VM on an external eSATA drive, figuring that the extra channel might pick up the slack. Things only got worse (could be my eSATA enclosure). So, for all of that I have basically two questions in one. Has anyone used this sort of setup and are there any gotchas either around the VMWare configuration or anything else I may have missed here that you can point me to? Is there another option that might work better? For example, I've considered trying a lighter weight Host OS and run both of my environments as VMs? I tried this with Server 2008 Hyper-V, but I lose too much laptop functionality going this route, so I never completed setup. I'm not averse to Linux as a host OS, though I'm no Linux expert. If I'm missing any critical info, feel free to ask. Thanks in advance for your help. Steve

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• WebLogic 12 hands-on bootcamps for partners–new dates & locations

  - by JuergenKress

  We offer free 2 days hands-on WebLogic 12c workshops for Oracle partners who want to become WebLogic Specialized: Register Here! Highlights of the workshop Quotes from previous Workshops Environment Setup and Weblogic Installation hands-on lab Weblogic Session Sharing hands-on lab Coherence hands-on lab WLS Session Replication with Coherence Web hands-on lab Weblogic Troubleshooting hands-on lab Weblogic JMS hands-on lab Exalogic & Oracle Cloud overview Oracle Enterprise Manager overview Oracle trainings are the best" Pedro Neto Novabase "Excellent training, well organized" Pedro Antunh, Capgemini "This course dives you into Oracle WebLogic giving you a quick start on benefiting from Fusion Apps" Leonardo Fernandes, Outsystems The event dates are following: Belgium 3rd - 4th October 2012 Oracle Vilvoorde South Africa 3rd –4th October 2012 Oracle Johannesburg Switzerland 25th - 26th October 2012 Oracle Baden-Dättwil Denmark 30th - 31st October 2012 Oracle Ballerup Norway 6th - 7th November 2012 Oracle Lysaker Netherlands 18th - 20th December 2012 Oracle Utrecht 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: WebLogic Bootcamp,WebLogic training,education,training,PTS,WebLogic Community,Oracle,OPN,Jürgen Kress

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• Is a cluster the most cost effective redundancy method for windows server 2003?

  - by Ryan

  We had a server with bad ram which caused a long outage while they figured it out and our client facing apps had to go down for a while. We are coming up with a solution for instant fail-over but are not sure what the most cost effective method would be. Is a windows server cluster the best method for this? Also note we are using Parallels Virtuozzo if that makes any difference here. We found Parallels has a documented method for setting this up but it said it required a Domain Controller as well as a Fiber connection to shared storage, is all that really needed? Thanks.

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• We Need More Migration!

  - by rickramsey

  source Eva Mendez says, "Oye chico, do you really want to keep your data in that tired legacy file system when it could be enjoying encryption, compression, deduplication, snapshots, remote replication and other benefits provided by ZFS in Oracle Solaris 11? It's really not that hard to cross over. If you know how." "I don't know how, me dices? Esta bien, papacito. Go to OTN. Take my word for it. They know how." <blushing> Aw shucks, Eva. Anything for you! </blushing> The Best Way to Migrate Data From Legacy File Systems to ZFS To migrate data from a legacy filesystem to ZFS in Oracle Solaris 11, you need to install the shadow-migration package and enable the shadowd service. Then follow the simple procedure described by Dominic Kay. How to Update to Oracle Solaris 11 Using the Image Packaging System Oracle Solaris 11.1 has been released. You can upgrade using either Oracle's official Solaris release repository or, if you have a support contract, the Support repository. Peter Dennis explains how. How to Migrate Oracle Database from Oracle Solaris 8 to Oracle Solaris 11 How to use the Oracle Solaris 8 P2V (physical to virtual) Archiver tool, which comes with Oracle Solaris Legacy Containers, to migrate a physical Oracle Solaris 8 system with Oracle Database and an Oracle Automatic Storage Management file system into an Oracle Solaris 8 branded zone inside an Oracle Solaris 10 guest domain on top of an Oracle Solaris 11 control domain. - Ricardo Website Newsletter Facebook Twitter

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• From The OU Classrooms...

  - by rajeshr

  No excuses for not doing this systematically, and I'm trying my best to break this bad habit of bulk uploads of class photographs and do it regularly instead. But for the time being, please forgive my laziness and live by my mass introduction of all fun loving, yet talented folks whom I met in the OU classrooms during the last three months or so through these picture essay that follow. It's unfortunate, I don't get to do this for my Live Virtual Classes for obvious reason,but let me take a moment to thank them all as well for choosing OU programs on various products. Thanks again to each one for memorable moments in the OU classrooms: Pillar Axiom MaxRep session at Bangkok. For detailed information on the OU course on Pillar Axiom Max Rep, access this page. Pillar Axiom SAN Administration Session at Bangkok. Know more about the product here. Details on the Pillar Axiom training program from Oracle University can be found here. Oracle Solaris ZFS Administration & Oracle Solaris Containers session at Hyderabad. Read more about ZFS here. Gain information on Solaris Containers by going here. Oracle University courses on Solaris 10 and its features can be viewed at this page. Oracle Solaris Cluster program at Hyderabad. Here's the OU landing page for the training programs on Oracle Solaris Cluster. Oracle Solaris 11 Administration Session at Bangalore. If you are interested to get trained on Solaris 11, get more details at this webpage. Sun Identity Manager Deployment Fundamentals session at Bangalore. The product is n.k.a Oracle Waveset IDM. Click here to get detailed description on this fabulous hands on training program. With Don Kawahigashi at Taipei for Pillar Axiom Storage training.

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• Should mock objects for tests be created at a high or low level

  - by Danack

  When creating unit tests for those other objects, what is the best way to create mock objects that provide data to other objects. Should they be created at a 'high level' and intercept the calls as soon as possible, or should they be done at a 'low level' and so make as much as the real code still be called? e.g. I'm writing a test for some code that requires a NoteMapper object that allows Notes to be loaded from the DB. class NoteMapper { function getNote($sqlQueryFactory, $noteID) { // Create an SQL query from $sqlQueryFactory // Run that SQL // if null // return null // else // return new Note($dataFromSQLQuery) } } I could either mock this object at a high level by creating a mock NoteMapper object, so that there are no calls to the SQL at all e.g. class MockNoteMapper { function getNote($sqlQueryFactory, $noteID) { //$mockData = {'Test Note title', "Test note text" } // return new Note($mockData); } } Or I could do it at a very low level, by creating a MockSQLQueryFactory that instead of actually querying the database just provides mock data back, and passing that to the current NoteMapper object. It seems that creating mocks at a high level would be easier in the short term, but that in the long term doing it at a low level would be more powerful and possibly allow more automation of tests e.g. by recording data in an out of a DB and then replaying that data for tests. Is there a recommended way of creating mocks? Are there any hard and fast rules about which are better, or should they both be used where appropriate?

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• Migrating master-slave MySQL database servers to 2 new servers, any tips or suggestions?

  - by mmattax

  I'm setting up 2 new database servers that will be replacing a current master-slave setup. All boxes are running / will be running MySQL on RHEL. Our current naming conventions: db1 - master database db2 - slave (using MySQL replication) db01 - new master db02 - new slave We need to get db01 to be the new master with db02 as the new slave. What is the best way to migrate db1 and db2 to db01 and db02? db1 and db2 are running in a production setting and we need to minimize all downtime; db1 has roughly 30GB of data in the database. Any suggestions or tips on how to migrate to our new servers would be much appreciated.

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• Portal and Content - Components, part 3 – Applied Customization Framework (4 of 7)

  - by Stefan Krantz

  Have you ever been challenged with the situation where your work task asks you to implement functionality in the WebCenter Portal and you browse through the Resource Catalog (Business Dictionary) and find the functionality you need. However when you get started there is small short comings and you ask your self- how can I re-use what is out of the box ca?- I wonder what code I need to use to produce the similar functions and include my new requirements?- Must I write a new taskflow? The answer to above questions are in many times answered with simply you can  do a taskflow customization to out-of-the-box taskflows. In this post I will help you understand how to do such customization. Best described is a 4 step process, see image flow below for illustration: Just to clarify few naming confusions that might occur when go through above process. Customization Role is a function within JDeveloper that will allow you to implement view and flow customizations to existing taskflows WebCenter Portal – Spaces Taskflow Customization Framework this technology scope do not only refer to WebCenter Spaces, this also include WebCenter Portal/Framework A taskflow customization do not overwrite or replace any code, it just creates an additional tip view of the taskflow in the MDS for the current application (WebCenter Portal or WebCenter Spaces) To sum up this simple procedure I also like to help you find your way around the main topic for this post series, this post series is focusing primarily on Content integration with WebCenter Portal, so where can I find content related taskflows in the WebCenter Libraries. The list below mention some useful locations to taskflows and each taskflow page fragments. Library Reference - WebCenter Document Library Service View Content Presenter Path: oracle.webcenter.doclib.view.jsf.taskflows.presenterTaskflow: contentPresenter.xml - The Content Presenter taskflowTaskflow: contentPresenterWizard.xml - The publishing wizard to select content, select template and preview including contributionDocument Manager Path: oracle.webcenter.doclib.view.jsf.taskflows.docManager Taskflow: documentManager.xml - The Document Manager taskflow which includes references to document management feature including browsing, download, uploading and viewing. For more information on Taskflow customizations please see following documentation:http://docs.oracle.com/cd/E23943_01/webcenter.1111/e10148/jpsdg_taskflows.htm#BACIEGJD

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• I'm confused about encryption and SSL

  - by ChowKiko

  while my friends and I planning to run our own website, we're confused about the encryption where hackers can TAPPING or in social engineering it's WIRE TAPPING, but I don't know how do they call it in Computers today... Well guys, I just want to know how encryption works with websites if we are using PHP+MYSQL? Is it ok to use user login ---- (PHP) encrypt inputted value then (PHP) will decrypt and validate it going to (MySQL) user login ---- (PHP) encrypt inputted value and decrypt the (MySQL) data if they are similar... Is it similar if we use $_SESSION without encryption inside PHP going to MySQL?or PHP encryption also helps the manipulation of binaries?..I'm so confused T_T... In regards to what I stated above, can a hacker hook the data if the server uses $_SESSION? Is $_SESSION safe?... IF THE HACKER CAN HOOK it? is it necessary to use SSL on our website? and why do some Merchandise websites use SSL and likewise facebook also uses SSL? what is the best suit for you if there is no SSL? encrypting the DATA using PHP going to MySQL or even without encryption while the PHP server uses $_SESSION?...

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• How-To Geek Gets the Microsoft MVP Award, Thanks to You

  - by The Geek

  The How-To Geek has won a Microsoft MVP award for the second year in a row, and it’s all thanks to you, our great readers that keep the site going. Join us for some mutual back-patting and some terrible photography of all the award stuff. Of course, if you’re familiar with the MVP award you’ll probably know that it’s actually for a single person, but in my opinion the award belongs to the entire How-To Geek community, without which this site would be nothing. 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 Five Sleek Audi R8 Car Themes for Chrome and Iron MS Notepad Replacement Metapad Returns with a New Beta Version Spybot Search and Destroy Now Available as a Portable App (PortableApps.com) ShapeShifter: What Are Dreams? [Video] This Computer Runs on Geek Power Wallpaper Bones, Clocks, and Counters; A Look at the First 35,000 Years of Computing

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• LibGdx efficient data saving/loading?

  - by grimrader22

  Currently, my LibGDX game consists of a 512 x 512 map of Tiles and entities such as players and monsters. I am wondering how to efficiently save and load the data of my levels. At the moment I am using JSON serialization for each class I want to save. I implement the Json.Serializable interface for all of these classes and write only the variables that are necessary. So my map consists of 512 x 512 tiles, that's 260,000 tiles. Each tile on the map consists of a Tile object, which points to some final Tile object like a GRASS_TILE or a STONE_TILE. When I serialize each level tile, the final Tile that it points to is re-serialized over and over again, so if I have 100 Tiles all pointing to GRASS_TILE, the data of GRASS_TILE is written 100 times over. When I go to load/deserialize my objects, 100 GrassTile objects are created, but they are each their own object. They no longer point to the final tile object. I feel like this reading/writing files very slow. If I were to abandon JSON serialization, to my knowledge my next best option would be saving the level data to a sql database. Unless there is a way to speed up serializing/deserializing 260,000 tiles I may have to do this. Is this a good idea? Could I really write that many tiles to the database efficiently? To sum all this up, I am trying to save my levels using JSON serialization, but it is VERY slow. What other options do I have for saving the data of so many tiles. I also must note that the JSON serialization is not slow on a PC, it is only VERY slow on a mobile device. Since file writing/reading is so slow on mobile devices, what can I do?

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