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• Upcoming eSeminars by PTS

  - by Javier Puerta

  The following eSeminars by PTS are already scheduled. Click on the links for more info and registration eSeminar - Oracle Database In-Memory Option August 29, 2014 @10:00am CEST ">(maximum duration 1 hour) September 29,2014 @10:00am CEST (maximum duration 1 hour) eSeminar - Oracle Database Multitenant option September 12, 2014 @10:00am CEST (maximum duration 1 hour) Learn from the experts!

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• Upcoming eSeminars by PTS

  - by Javier Puerta

  The following eSeminars by PTS are already scheduled. Click on the links for more info and registration eSeminar - Oracle Database In-Memory Option August 29, 2014 @10:00am CEST ">(maximum duration 1 hour) September 29,2014 @10:00am CEST (maximum duration 1 hour) eSeminar - Oracle Database Multitenant option September 12, 2014 @10:00am CEST (maximum duration 1 hour) Learn from the experts!

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• Can a GPO Startup Script starts a background process and exit immediately?

  - by pepoluan

  I have Googled, and not yet found an answer. Scenario: One of my GPOs have a Startup Script that takes a long time to finish. For some reasons, we have to run the scripts synchronously. Naturally, this causes slow startup time (sometimes as long as 15 minutes!) before the Logon screen appears. After profiling and analyzing the perpetrator script, I conclusively determined that the step where it's taking a long time to finish will not affect the result of the succesive GPOs. In other words, that particular step (and all steps afterwards) can run in the background. My Question: Is it possible for the Startup Script to just 'trigger' another script/program that will run to completion even when the Startup Script exits? That is, the "child processes" of the Startup Script continues to live even when the Startup Script's process ends? Additional Info: The Domain Controllers are 2008 and 2008 R2's. The workstations are Windows XP.

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• Avoiding and Identifying False Sharing Among Threads

  In symmetric multiprocessor (SMP) systems, each processor has a local cache. The memory system must guarantee cache coherence. False sharing occurs when threads on different processors modify variables that reside on the same cache line. Learn methods to detect and correct false sharing.

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• How are people using virtualisation with SQL Server? Part 3

  - by GavinPayneUK

  Monitoring After CPU, memory and storage, monitoring is the fourth thing which changes massively according to Brent Ozar’s list when you move to virtualisation. Some of the performance counters we used to organise our lives around become meaningless and the performance of the host server is often over-looked when looking for problems. What’s encouraging here is that the majority of people are already looking beyond the performance of virtual server and at the performance of the host server. This...(read more)

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• Book Readers As Envisioned Circa 1935

  - by Jason Fitzpatrick

  This early 20th century sketch showcases the future of books; thankfully the actual delivery of the concept proved to be a bit more lap-friendly. The sketch is from the April, 1935 issues of Everyday Science and Mechanics and presents a vision of book consumption that, thankfully, came to pass in a much more compact fashion that doesn’t require swapping rolls of film. [via Boing Boing] How To Properly Scan a Photograph (And Get An Even Better Image) The HTG Guide to Hiding Your Data in a TrueCrypt Hidden Volume Make Your Own Windows 8 Start Button with Zero Memory Usage

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• How Would a Single Laptop Affect the Past? [Infographic Comic]

  - by Asian Angel

  What kind of impact could a single laptop have if it were introduced to people during key periods in Western history? This infographic comic provides some speculation on what the results could be like… View the Full-Size Version Crave asks: How would you change the past with a laptop? [CNET - Crave] The HTG Guide to Hiding Your Data in a TrueCrypt Hidden Volume Make Your Own Windows 8 Start Button with Zero Memory Usage Reader Request: How To Repair Blurry Photos

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• Ismét a blog-fedélzeten

  - by user645740

  A szokásos dolgos hétköznapokat élénkítve ismét gyakrabban frissítem a blogomat. Rengeteg izgalmas újdonságról fogok beszámolni az Oracle Exadata Database Machine, az Oracle adattárházak témakörökben és az Oracle BI területekrol Oracle OpenWorld, a budapesti Oracle Day kapcsán is. Új termékbejelentések: az Oracle Engineered Systems területen: Exalytics In-Memory Machine, SPARC SuperCluster További ügyfélsikerek, tapasztalatok az Exadata Database Machine és az Exalogic Elastic Cloud megoldásokkal stb.

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• How to construct a build server if unable to build in one step in Delphi XE2 [migrated]

  - by Peter Turner

  There is a known bug in the last few versions of Delphi that causes memory leaks when compiling large projects and I don't think it has a work around, if it does I'd like to know. But, if this is just a problem that has no solution, how would one go about designing a build server for a this? I might need to have the build server restart itself between building and pick up where it left off, that seems cumbersome...

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• How to access shared folder in Virtual Box

  - by alsadi90

  I followed the steps for sharing folders between windows 7 and Ubuntu in virtual box. but the folder appear with X sign and give me the following message when open it "the folder conent could not be displayed" and when choose "shared folder" from "Device" menu the following is written below "on the system page , you have asigned more than 50% of your computer's memory (2.93) to the virtual machine ...

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• CVE-2012-5134 Buffer Overflow vulnerability in libxml2

  - by RitwikGhoshal

  CVE DescriptionCVSSv2 Base ScoreComponentProduct and Resolution CVE-2012-5134 Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability 6.8 libxml2 Solaris 10 SPARC: 125731-10 X86: 125732-10 Solaris 11.1 11.1.7.5.0 This notification describes vulnerabilities fixed in third-party components that are included in Oracle's product distributions.Information about vulnerabilities affecting Oracle products can be found on Oracle Critical Patch Updates and Security Alerts page.

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• Drawing a line using openGL does not work

  - by vikasm

  I am a beginner in OpenGL and tried to write my first program to draw some points and a line. I can see that the window opens with white background but no line is drawn. I was expecting to see red colored (because glColor3f(1.0, 0.0, 0.0);) dots (pixels) and line. But nothing is seen. Here is my code. void init2D(float r, float g, float b) { glClearColor(r,g,b,0.0); glMatrixMode(GL_PROJECTION); gluOrtho2D(0.0, 200.0, 0.0, 150.0); } void display() { glClear(GL_COLOR_BUFFER_BIT); glColor3f(1.0, 0.0, 0.0); glBegin(GL_POINTS); for(int i = 0; i < 10; i++) { glVertex2i(10+5*i, 110); } glEnd(); //draw a line glBegin(GL_LINES); glVertex2i(10,10); glVertex2i(100,100); glEnd(); glFlush(); } int main(int argc, char** argv) { //Initialize Glut glutInit(&argc, argv); //setup some memory buffers for our display glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB); //set the window size glutInitWindowSize(500, 500); //create the window with the title 'points and lines' glutCreateWindow("Points and Lines"); init2D(0.0, 0.0, 0.0); glutDisplayFunc(display); glutMainLoop(); } I wanted to verify that the glcontext was opening properly and used this code: int main(int argc, char **argv) { glutInit(&argc, argv); //setup some memory buffers for our display glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB); //set the window size glutInitWindowSize(500, 500); //create the window with the title 'points and lines' glutCreateWindow("Points and Lines"); char *GL_version=(char *)glGetString(GL_VERSION); puts(GL_version); char *GL_vendor=(char *)glGetString(GL_VENDOR); puts(GL_vendor); char *GL_renderer=(char *)glGetString(GL_RENDERER); puts(GL_renderer); getchar(); return 0; } And the ouput I got was: 3.1.0 - Build 8.15.10.2345 Intel Intel(R) HD Graphics Family Can someone point out what I am doing wrong ? Thanks.

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• Ubuntu 12.04 partial freeze

  - by user1550594

  While working on the system suddenly if i open a random file or start browsing and on other random moments the system starts hanging or start responding slowly. In this situation, i can able to open the virtual console using the Ctrl + Alt + F1-F6 and type the top and list the processes. Due to urgency, i will kill the long running processes or the over memory utilizing process to recover the screen back. Can anyone give me a permanent fix.!

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• Supermicro motherboards and systems

  - by jchang

  I used to buy SuperMicro exclusively for my own lab. SuperMicro always had a deep lineup of motherboards with almost every conceivable variation. In particular, they had the maximum memory and IO configuration that is desired for database servers. But from around 2006, I became too lazy to source the additional components necessary to complete the system, and switched to Dell PowerEdge Tower servers. Now, I may reconsider as neither Dell or HP are offering the right combination of PCI-E slots. Nor...(read more)

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• How to remove the unwanted entries from the boot menu? [duplicate]

  - by Sen

  Possible Duplicate: Is there a way to remove/hide old kernel versions? When my system boots up, a big list of some 6 options are shown other than the Windows OS option. They are like : Ubuntu 10.04- linux kernel 2.6.32-25 Ubuntu 10.04- linux kernel 2.6.32-25 (recovery) Ubuntu 10.04- linux kernel 2.6.32-26 Ubuntu 10.04- linux kernel 2.6.32-26 (recovery) ...etc Memory Test.. Windows XP Professional How to remove the unwanted entries from this list?

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• In what kind of variable type is the player position stored on a MMORPG such as WoW?

  - by jokoon

  I even heard J. Carmack quickly talk about it... How a software can track a player's position so accurately, being on a such huge world, without loading between zones, and on a multiplayer scale ? How is the data formatted when it passes through the netcode ? I can understand how vertices are stored into the graphic card's memory, but when it comes to synchronize the multiplayer, I can't imagine what is best.

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• Information I need to know as a Java Developer [on hold]

  - by Woy

  I'm a java developer. I'm trying to get more knowledge to become a better programmer. I've listed a number of technologies to learn. Instead of what I've listed, what technologies would you suggest to learn as well for a Junior Java Developer? I realize, there's a lot of things to study. Java: - how a garbage collector works - resource management - network programming - TCP/IP HTTP - transactions, - consistency: interfaces, classes collections, hash codes, algorithms, comp. complexity concurrent programming: synchronizing, semafores steam management metability: thread-safety byte code manipulations, reflections, Aspect-Oriented Programming as base to understand frameworks such as Spring etc. Web stack: servlets, filters, socket programming Libraries: JDK, GWT, Apache Commons, Joda-Time, Dependency Injections: Spring, Nano Tools: IDE: very good knowledge - debugger - profiler - web analyzers: Wireshark, firebugs - unit testing SQL/Databases: Basics SELECTing columns from a table Aggregates Part 1: COUNT, SUM, MAX/MIN Aggregates Part 2: DISTINCT, GROUP BY, HAVING + Intermediate JOINs, ANSI-89 and ANSI-92 syntax + UNION vs UNION ALL x NULL handling: COALESCE & Native NULL handling Subqueries: IN, EXISTS, and inline views Subqueries: Correlated ITH syntax: Subquery Factoring/CTE Views Advanced Topics Functions, Stored Procedures, Packages Pivoting data: CASE & PIVOT syntax Hierarchical Queries Cursors: Implicit and Explicit Triggers Dynamic SQL Materialized Views Query Optimization: Indexes Query Optimization: Explain Plans Query Optimization: Profiling Data Modelling: Normal Forms, 1 through 3 Data Modelling: Primary & Foreign Keys Data Modelling: Table Constraints Data Modelling: Link/Corrollary Tables Full Text Searching XML Isolation Levels Entity Relationship Diagrams (ERDs), Logical and Physical Transactions: COMMIT, ROLLBACK, Error Handling

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• How best to look up objects by label?

  - by dsollen

  I am writing the server backed by a pre-written API. I'm going to get a number of strings representing ports, signals, paths, etc etc etc. I need to look up the object associated with a given label, these objects are all in memory (no sql magic to do this for me). My question is, how best do I associate a given unique label with the mutable object it represents? I have enough objects that looking through every signal or every port to find the one that matches is possible, but may be slightly too slow. To be honest the direct 'look at every object' method is probably good enough for so small a body of objects and anything else is premature optimization, but I still am curious what the proper solution would be if I thought my signals were going to grow a bit larger. As I see it there are two options available. First would be to to create a 'store' that is a simple map between object and label. I could have it so that every time I call addObject the object is automatically saved into a hashmap or the like. This works, but relies on my properly adding and deleting each object so the map doesn't grow indefinitely. The biggest issue to me is that this involves having some hidden static map in my ModelObject class that just feels...wrong somehow. The other option is to have some method that can interpret the labels. All of these labels are derived from the underlying objects. So I can look at the signal label, for instance, and say "these 20 characters are the port" to figure out what port I need. This would allow me to quickly figure out what I need. However, if the label method is changed the translateLabelToObject method needs to be updated as well or everything breaks. Which solution is cleaner, or possibly a cleaner solution than either of above? For the record I'm working with sufficient number of variables to make direct comparison a little slow, but not enough to be concerned about memory overhead, written in java. All objects that have labels I need to look up extend the same parent class.

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• Does OO, TDD, and Refactoring to Smaller Functions affect Speed of Code?

  - by Dennis

  In Computer Science field, I have noticed a notable shift in thinking when it comes to programming. The advice as it stands now is write smaller, more testable code refactor existing code into smaller and smaller chunks of code until most of your methods/functions are just a few lines long write functions that only do one thing (which makes them smaller again) This is a change compared to the "old" or "bad" code practices where you have methods spanning 2500 lines, and big classes doing everything. My question is this: when it call comes down to machine code, to 1s and 0s, to assembly instructions, should I be at all concerned that my class-separated code with variety of small-to-tiny functions generates too much extra overhead? While I am not exactly familiar with how OO code and function calls are handled in ASM in the end, I do have some idea. I assume that each extra function call, object call, or include call (in some languages), generate an extra set of instructions, thereby increasing code's volume and adding various overhead, without adding actual "useful" code. I also imagine that good optimizations can be done to ASM before it is actually ran on the hardware, but that optimization can only do so much too. Hence, my question -- how much overhead (in space and speed) does well-separated code (split up across hundreds of files, classes, and methods) actually introduce compared to having "one big method that contains everything", due to this overhead? UPDATE for clarity: I am assuming that adding more and more functions and more and more objects and classes in a code will result in more and more parameter passing between smaller code pieces. It was said somewhere (quote TBD) that up to 70% of all code is made up of ASM's MOV instruction - loading CPU registers with proper variables, not the actual computation being done. In my case, you load up CPU's time with PUSH/POP instructions to provide linkage and parameter passing between various pieces of code. The smaller you make your pieces of code, the more overhead "linkage" is required. I am concerned that this linkage adds to software bloat and slow-down and I am wondering if I should be concerned about this, and how much, if any at all, because current and future generations of programmers who are building software for the next century, will have to live with and consume software built using these practices. UPDATE: Multiple files I am writing new code now that is slowly replacing old code. In particular I've noted that one of the old classes was a ~3000 line file (as mentioned earlier). Now it is becoming a set of 15-20 files located across various directories, including test files and not including PHP framework I am using to bind some things together. More files are coming as well. When it comes to disk I/O, loading multiple files is slower than loading one large file. Of course not all files are loaded, they are loaded as needed, and disk caching and memory caching options exist, and yet still I believe that loading multiple files takes more processing than loading a single file into memory. I am adding that to my concern.

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• Wireless network disabled

  - by neil delmonte

  After installing Ubuntu 11.04, my network has become disabled. Here is the output oflshw in terminal: *-network DISABLED description: Wireless interface product: BCM4312 802.11b/g LP-PHY vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:02:00.0 logical name: eth1 version: 01 serial: 00:21:00:58:65:5f width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=wl0 driverversion=5.100.82.38 latency=0 multicast=yes wireless=IEEE 802.11bg resources: irq:17 memory:d4600000-d4603fff

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• ubuntu 14.04 freezes randomly

  - by rajesh chowdary

  I have installed Ubuntu 14.04 version along side with windows 7. Ubuntu freezes randomly I am unable to use any keys on keyboard since they are not working even mouse is not working.the only solution to get off from this freeze is restarting my computer.I have ATi/AMD graphic card but I removed it before installing Ubuntu 14.04.I have run memory test no problem with ram.please give some solution to get rid of this abnormal freeze. thanks in advance. system configuration CPU=Intel core 2 duo e7500 2.93ghz motherboard=Intel dg41wv hard disk=Seagate 500gb ram=4gb

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• Lenovo Server Stable Growing

  Server Snapshot: In the past year, Lenovo launched its second generation of ThinkServers, equipped with more memory and storage capacity, the latest Intel processors, and virtualization capabilities. Yet the company remains in the "other" category in the various server measurement surveys.

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• Lenovo Server Stable Growing

  Server Snapshot: In the past year, Lenovo launched its second generation of ThinkServers, equipped with more memory and storage capacity, the latest Intel processors, and virtualization capabilities. Yet the company remains in the "other" category in the various server measurement surveys.

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• Visual Studio 2013 now available!

  - by TATWORTH

  Originally posted on: http://geekswithblogs.net/TATWORTH/archive/2013/10/17/visual-studio-2013-now-available.aspxVisual Studio 2013 is now available for download! I will attach the beginning of their web page announcement. You should note that web projects may now be readily a combination of Web Forms, MVC and Web API.We are excited to announce that Visual Studio 2013 is now available to you as an MSDN subscriber! For developers and development teams, Visual Studio 2013 easily delivers applications across all Microsoft devices, cloud, desktop, server and game console platforms by providing a consistent development experience, hybrid collaboration options, and state-of-the-art tools, services, and resources. Below are just a few of the highlights in this release:   •   Innovative features for greater developer productivity:Visual Studio 2013 includes many user interface improvements; there are more than 400 modified icons with greater differentiation and increased use of color, a redesigned Start page, and other design changes.  •   Support for Windows 8.1 app development: Visual Studio 2013 provides the ideal toolset for building modern applications that leverage the next wave in Windows platform innovation (Windows 8.1), while supporting devices and services across all Microsoft platforms. Support for Windows Store app development in Windows 8.1 includes updates to the tools, controls and templates, new Coded UI test support for XAML apps, UI Responsiveness Analyzer and Energy Consumption profiler for XAML & HTML apps, enhanced memory profiling tools for HTML apps, and improved integration with the Windows Store.  •   Web development advances: Creating websites or services on the Microsoft platform provides you with many options, including ASP.NET WebForms, ASP.NET MVC, WCF or Web API services, and more. Previously, working with each of these approaches meant working with separate project types and tooling isolated to that project’s capabilities. The One ASP.NET vision unifies your web project experience in Visual Studio 2013 so that you can create ASP.NET web applications using your preference of ASP.NET component frameworks in a single project. Now you can mix and match the right tools for the job within your web projects, giving you increased flexibility and productivity.

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• Can my machine run Ubuntu( kubuntu | xubuntu | mint ) 12.04 WELL?

  - by Steve

  I have a 9 year old computer packing the hardware listed below. My question is, can I run 12.04 ( Ubuntu, Kubuntu, MINT or Xubuntu ) WELL? I was running Ubuntu 10.10 and I upgraded to 12.04 by going through each release via the update manager: 11.04 - 11.10 -12.04 During the installation process for 12.04 I saw an error message that there was an error installing and setting up part of the kernel. Later, when I tried installing a package in synaptic, I got another error message mentioning the kernel. When I rebooted, I got told somehting about my video and graphics was not configured properly and that I would have to do it manually ( like I know ). It gave me the option to enter the system in low graphics mode, but it just hanged. I had an old livecd of Xubuntu 10.10 around so I used that to get into my computer and copy data over to an external hard drive. I think tried to install Xubuntu 10.10 from the livecd, with the option "download updates" checked. The install process moved along a bit, then halted for about 5 hours. I rebooted my machine and tried the Xubuntu 10.10 installer WITHOUT the option to "download updates". The install completed in about 15 minutes. So, all of that is making me wonder if there is someting about 12.04 that does not like my hardware. I'm willing to try again, but only if I know I will not have to spend hours just to get to an error message and a hosed up system like I did last night. I also think I have a lot more RAM than is being reported in the output below. I had extra ram installed last year. I'm not good with the command line readouts, but there seems like there should be a lot more. I wasn't thrilled with Unity. I am willing to try Kubuntu 12.04. Will I run into the same problems? What is the highest version of a *ubuntu can I upgrade to? Thanks CPU Model: Intel(R) Pentium(R) 4 CPU 2.53GHz Frequency: 2533.223 MHz L2 Cache: 512 KB Bogomips: 5066.44 Numbering: family(15) model(2) stepping(7) Flags: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe up pebs bts cid RAM ~$ free -mt total used free shared buffers cached Mem: 1506 891 615 0 91 521 -/+ buffers/cache: 278 1227 Swap: 1609 0 1609 Total: 3116 891 2225 Video Card 01:00.0 VGA compatible controller: nVidia Corporation NV18 [GeForce4 MX 440 AGP 8x] (rev a2) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. V9180 Magic Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 16 Memory at fd000000 (32-bit, non-prefetchable) [size=16M] Memory at f0000000 (32-bit, prefetchable) [size=64M] Expansion ROM at fe9e0000 [disabled] [size=128K] Kernel driver in use: nouveau Kernel modules: nouveau, nvidiafb Motherboard Intel 845PE ATX 533FSB DDR333 USB2

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