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  • #OOW 2012 : IaaS, Private Cloud, Multitenant Database, and X3H2M2

    - by Eric Bezille
    The title of this post is a summary of the 4 announcements made by Larry Ellison today, during the opening session of Oracle Open World 2012... To know what's behind X3H2M2, you will have to wait a little, as I will go in order, beginning with the IaaS - Infrastructure as a Service - announcement. Oracle IaaS goes Public... and Private... Starting in 2004 with Fusion development, Oracle Cloud was launch last year to provide not only SaaS Application, based on standard development, but also the underlying PaaS, required to build the specifics, and required interconnections between applications, in and outside of the Cloud. Still, to cover the end-to-end Cloud  Services spectrum, we had to provide an Infrastructure as a Service, leveraging our Servers, Storage, OS, and Virtualization Technologies, all "Engineered Together". This Cloud Infrastructure, was already available for our customers to build rapidly their own Private Cloud either on SPARC/Solaris or x86/Linux... The second announcement made today bring that proposition a big step further : for cautious customers (like Banks, or sensible industries) who would like to benefits from the Cloud value of "as a Service", but don't want their Data out in the Cloud... We propose to them to operate the same systems, Exadata, Exalogic & SuperCluster, that are providing our Public Cloud Infrastructure, behind their firewall, in a Private Cloud model. Oracle 12c Multitenant Database This is also a major announcement made today, on what's coming with Oracle Database 12c : the ability to consolidate multiple databases with no extra additional  cost especially in terms of memory needed on the server node, which is often THE consolidation limiting factor. The principle could be compare to Solaris Zones, where, you will have a Database Container, who is "owning" the memory and Database background processes, and "Pluggable" Database in this Database Container. This particular feature is a strong compelling event to evaluate rapidly Oracle Database 12c once it will be available, as this is major step forward into true Database consolidation with Multitenancy on a shared (optimized) infrastructure. X3H2M2, enabling the new Exadata X3 in-Memory Database Here we are :  X3H2M2 stands for X3 (the new version of Exadata announced also today) Heuristic Hierarchical Mass Memory, providing the capability to keep most if not all the Data in the memory cache hierarchy. Of course, this is the major software enhancement of the new X3 Exadata machine, but as this is a software, our current customers would be able to benefit from it on their existing systems by upgrading to the new release. But that' not the only thing that we did with X3, at the same time we have upgraded everything : the CPUs, adding more cores per server node (16 vs. 12, with the arrival of Intel E5 / Sandy Bridge), the memory with 512GB memory as well per node,  and the new Flash Fire card, bringing now up to 22 TB of Flash cache. All of this 4TB of RAM + 22TB of Flash being use cleverly not only for read but also for write by the X3H2M2 algorithm... making a very big difference compare to traditional storage flash extension. But what does those extra performances brings to you on an already very efficient system: double your performances compare to the fastest storage array on the market today (including flash) and divide you storage price x10 at the same time... Something to consider closely this days... Especially that we also announced the availability of a new Exadata X3-2 8th rack : a good starting point. As you have seen a major opening for this year again with true innovation. But that was not the only thing that we saw today, as before Larry's talk, Fujitsu did introduce more in deep the up coming new SPARC processor, that they are co-developing with us. And as such Andrew Mendelsohn - Senior Vice President Database Server Technologies came on stage to explain that the next step after I/O optimization for Database with Exadata, was to accelerate the Database at execution level by bringing functions in the SPARC processor silicium. All in all, to process more and more Data... The big theme of the day... and of the Oracle User Groups Conferences that were also happening today and where I had the opportunity to attend some interesting sessions on practical use cases of Big Data one in Finances and Fraud profiling and the other one on practical deployment of Oracle Exalytics for Data Analytics. In conclusion, one picture to try to size Oracle Open World ... and you can understand why, with such a rich content... and this only the first day !

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  • WMemoryProfiler is Released

    - by Alois Kraus
    What is it? WMemoryProfiler is a managed profiling Api to aid integration testing. This free library can get managed heap statistics and memory usage for your own process (remember testing) and other processes as well. The best thing is that it does work from .NET 2.0 up to .NET 4.5 in x86 and x64. To make it more interesting it can attach to any running .NET process. The reason why I do mention this is that commercial profilers do support this functionality only for their professional editions. An normally only since .NET 4.0 since the profiling API only since then does support attaching to a running process. This thing does differ in many aspects from “normal” profilers because while profiling yourself you can get all objects from all managed heaps back as an object array. If you ever wanted to change the state of an object which does only exist a method local in another thread you can get your hands on it now … Enough theory. Show me some code /// <summary> /// Show feature to not only get statisics out of a process but also the newly allocated /// instances since the last call to MarkCurrentObjects. /// GetNewObjects does return the newly allocated objects as object array /// </summary> static void InstanceTracking() { using (var dumper = new MemoryDumper()) // if you have problems use to see the debugger windows true,true)) { dumper.MarkCurrentObjects(); Allocate(); ILookup<Type, object> newObjects = dumper.GetNewObjects() .ToLookup( x => x.GetType() ); Console.WriteLine("New Strings:"); foreach (var newStr in newObjects[typeof(string)] ) { Console.WriteLine("Str: {0}", newStr); } } } … New Strings: Str: qqd Str: String data: Str: String data: 0 Str: String data: 1 … This is really hot stuff. Not only you can get heap statistics but you can directly examine the new objects and make queries upon them. When I do find more time I can reconstruct the object root graph from it from my own process. It this cool or what? You can also peek into the Finalization Queue to check if you did accidentally forget to dispose a whole bunch of objects … /// <summary> /// .NET 4.0 or above only. Get all finalizable objects which are ready for finalization and have no other object roots anymore. /// </summary> static void NotYetFinalizedObjects() { using (var dumper = new MemoryDumper()) { object[] finalizable = dumper.GetObjectsReadyForFinalization(); Console.WriteLine("Currently {0} objects of types {1} are ready for finalization. Consider disposing them before.", finalizable.Length, String.Join(",", finalizable.ToLookup( x=> x.GetType() ) .Select( x=> x.Key.Name)) ); } } How does it work? The W of WMemoryProfiler is a good hint. It does employ Windbg and SOS dll to do the heavy lifting and concentrates on an easy to use Api which does hide completely Windbg. If you do not want to see Windbg you will never see it. In my experience the most complex thing is actually to download Windbg from the Windows 8 Stanalone SDK. This is described in the Readme and the exception you are greeted with if it is missing in much greater detail. So I will not go into this here.   What Next? Depending on the feedback I do get I can imagine some features which might be useful as well Calculate first order GC Roots from the actual object graph Identify global statics in Types in object graph Support read out of finalization queue of .NET 2.0 as well. Support Memory Dump analysis (again a feature only supported by commercial profilers in their professional editions if it is supported at all) Deserialize objects from a memory dump into a live process back (this would need some more investigation but it is doable) The last item needs some explanation. Why on earth would you want to do that? The basic idea is to store in your live process some logging/tracing data which can become quite big but since it is never written to it is very fast to generate. When your process crashes with a memory dump you could transfer this data structure back into a live viewer which can then nicely display your program state at the point it did crash. This is an advanced trouble shooting technique I have not seen anywhere yet but it could be quite useful. You can have here a look at the current feature list of WMemoryProfiler with some examples.   How To Get Started? First I would download the released source package (it is tiny). And compile the complete project. Then you can compile the Example project (it has this name) and uncomment in the main method the scenario you want to check out. If you are greeted with an exception it is time to install the Windows 8 Standalone SDK which is described in great detail in the exception text. Thats it for the first round. I have seen something more limited in the Java world some years ago (now I cannot find the link anymore) but anyway. Now we have something much better.

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  • What Counts for a DBA: Humility

    - by drsql
    In football (the American sort, naturally,) there are a select group of players who really hope to never have their names called during the game. They are members of the offensive line, and their job is to protect other players so they can deliver the ball to the goal to score points. When you do hear their name called, it is usually because they made a mistake and the player that they were supposed to protect ended up flat on his back admiring the clouds in the sky instead of advancing towards the goal to scoring point. Even on the rare occasion their name is called for a good reason, it is usually because they were making up for a teammate who had made a mistake and they covered up for them. The role of offensive lineman is a very good analogy for the role of the admin DBA. As a DBA, you are called on to be barely visible and rarely heard, protecting the company data assets tenaciously, even though the enemies to our craft surround us on all sides:. Developers: Cries of ‘foul!’ often ensue when the DBA says that they want data integrity to be stringently enforced and that documentation is needed so they can support systems, mostly because every error occurrence in the enterprise will be initially blamed on the database and fall to the DBA to troubleshoot. Insisting too loudly may bring those cries of ‘foul’ that somewhat remind you of when your 2 year old daughter didn't want to go to bed. The result of this petulance is that the next "enemy" gets involved. Managers: The concerns that motivate DBAs to argue will not excite the kind of manager who gets his technical knowledge from a glossy magazine filled with buzzwords, charts, and pretty pictures. However, the other programmers in the organization will tickle the buzzword void with a stream of new-sounding ideas and technologies constantly, along with warnings that if we did care about data integrity and document things, the budget would explode! In contrast, the arguments for integrity of data and supportability tend to be about as exciting as watching grass grow, and far too many manager types seem to prefer to smoke it than watch it. Packaged Applications: The DBA is rarely given a chance to review a new application that is being demonstrated for the enterprise, and rarer still is the DBA that gets a veto of an application because the database it uses has clearly been created by an architect that won't read a data modeling book because he is already married. More often than not this leads to hours of work for the DBA trying to performance-tune a database with a menagerie of rules that must be followed to stay within the  application support agreement, such as no changing indexes on a third party schema even though there are 10 billion rows instead of the 10 thousand when the system was last optimized. Hardware Failures: Physical disks, networking devices, memory, and backup devices all come with a measure known as ‘mean time before failure’ and it is never listed in centuries or eons. More like years, and the term ‘mean’ indicates that half of the devices are expected to fail before that, which by my calendar means any hour of any day that it wants to fail it will. But the DBA sucks it up and does the task at hand with a humility that makes them nearly invisible to all but the most observant person in the organization. The best DBAs I know are so proactive in their relentless pursuit of perfection that they detect many of the bugs (which they seldom caused) in the system well before they become a problem. In the end the DBA gets noticed for one of same two reasons as the offensive lineman. You make a mistake, like dropping a critical production database that had never been backed up; or when a system crashes for any reason whatsoever and they are on the spot with troubleshooting and system restoration plans that have been well thought out, tested, and tested again. Not because there is any glory in it, but because it is what they do.   Note: The characteristics of the professions referred to in this blog are meant to be overstated stereotypes for humorous effect, and even some DBAs aren't quite this perfect. If you are reading this far and haven’t hand written a 10 page flaming comment about how you are a _______ and you aren’t like this, that is awesome. Not every situation applies to everyone, but if you have never worked with a bad packaged app, a magazine trained manager, programmers that aren’t team players, or hardware that occasionally failed, relax and go have a unicorn sandwich before you wake up.

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  • Speed up executable program Linux. Bit Toggling

    - by AK_47
    I have a ZyBo circuit board which has a ArmV7 processor. I wrote a C program to output a clock and a corresponding data sequence on a PMOD. The PMOD has a switching speed of up to 50MHz. However, my program's created clock only has a max frequency of 115 Hz. I need this program to output as fast as possible because the PMOD I'm using is capable of 50MHz. I compiled my program with the following code line: gcc -ofast (c_program) Here is some sample code: #include <stdio.h> #include <stdlib.h> #define ARRAYSIZE 511 //________________________________________ //macro for the SIGNAL PMOD //________________________________________ //DATA //ZYBO Use Pin JE1 #define INIT_SIGNAL system("echo 54 > /sys/class/gpio/export"); system("echo out > /sys/class/gpio/gpio54/direction"); #define SIGNAL_ON system("echo 1 > /sys/class/gpio/gpio54/value"); #define SIGNAL_OFF system("echo 0 > /sys/class/gpio/gpio54/value"); //________________________________________ //macro for the "CLOCK" PMOD //________________________________________ //CLOCK //ZYBO Use Pin JE4 #define INIT_MYCLOCK system("echo 57 > /sys/class/gpio/export"); system("echo out > /sys/class/gpio/gpio57/direction"); #define MYCLOCK_ON system("echo 1 > /sys/class/gpio/gpio57/value"); #define MYCLOCK_OFF system("echo 0 > /sys/class/gpio/gpio57/value"); int main(void){ int myarray[ARRAYSIZE] = {//hard coded array for signal data 1,0,0,1,0,1,0,0,1,0,1,0,0,1,0,1,0,0,1,0,1,0,0,1,0,0,1,0,1,0,0,1,1,0,0,1,1,0,1,0,0,0,0,0,1,0,0,1,1,1,0,0,1,1,1,0,1,1,1,1,0,0,1,0,0,0,1,0,1,0,0,1,1,1,0,0,1,0,1,0,1,0,0,1,0,1,1,0,1,0,1,1,0,0,1,1,1,1,0,0,1,0,1,0,0,1,1,1,1,1,1,0,0,1,0,0,1,1,0,1,0,0,0,0,1,0,0,0,1,1,0,0,1,0,1,1,1,0,0,0,1,0,0,0,1,0,1,0,0,0,1,0,0,1,0,1,1,1,1,0,1,1,0,1,0,0,1,0,0,0,1,0,1,0,0,1,0,0,0,1,0,0,0,1,0,1,0,1,0,1,0,1,1,0,0,0,0,0,0,0,0,1,0,1,1,0,1,1,1,1,1,0,0,1,1,1,0,0,1,1,0,1,1,0,1,1,1,0,0,1,1,1,1,1,0,0,1,0,1,0,1,0,1,1,0,1,0,0,0,1,1,1,0,1,0,1,0,1,0,1,0,1,0,1,0,0,1,0,0,0,0,1,1,1,0,1,1,1,1,0,1,1,0,1,0,1,0,1,0,0,1,0,1,1,1,0,1,1,1,0,0,1,1,1,0,1,0,0,1,0,1,1,1,1,1,0,1,1,1,1,1,1,1,0,1,1,0,0,1,0,1,1,0,1,0,1,1,1,0,0,0,0,0,1,0,0,0,1,0,1,1,1,1,1,1,1,0,0,0,0,0,1,1,0,1,1,1,1,1,1,1,1,0,1,1,0,1,0,0,0,1,1,1,1,1,1,1,1,1,1,0,1,1,1,1,0,1,1,1,0,1,0,1,1,1,0,0,0,1,0,1,0,1,0,0,1,1,0,0,1,1,0,1,0,0,1,0,0,1,0,1,1,1,1,1,1,0,1,1,0,1,0,1,1,1,1,1,1,0,0,1,1,0,1,1,0,0,1,1,0,1,1,0,1,0,1,0,1,0,1,0,0,1,1,1,0,1,1,0,0,0,0,1,1,0,1,1,0,1,1,1,1,1,1,1,0,1,0,1,1,0,0,0,0,0,0,0,0,0,0,0 }; INIT_SIGNAL INIT_MYCLOCK; //infinite loop int i; do{ i = 0; do{ /* 1020 is chosen because it is twice the size needed allowing for the changes in the clock. (511= 0-510, 510*2= 1020 ==> 0-1020 needed, so 1021 it is) */ if((i%2)==0) { MYCLOCK_ON; if(myarray[i/2] == 1){ SIGNAL_ON; }else{ SIGNAL_OFF; } } else if((i%2)==1) { MYCLOCK_OFF; //dont need to change the signal since it will just stay at whatever it was. } ++i; } while(i < 1021); } while(1); return 0; } I'm using the 'system' call to tell the system to output 1 volt or 0 volts onto a pin on the board (to represent the data signal and clock signal. One pin for the data and another for the clock). That was the only way I knew to tell the system to output a voltage. What can I do to make my executable program output to be at least in the magnitude of MegaHertz?

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  • upgrade from windows 2008 server CORE to full windows 2008 server

    - by laurens
    Possible Duplicate: Install GUI on Windows Server 2008 Core As I've seen there is not really a topic about this here... My question: Is there any means to upgrade from windows 2008 server CORE to full windows 2008 server? The server is used as Hyper-V Host machine. On the internet mostly I find: "no you'll have to reinstall" But maybe there's a workaround? Thanks in advance

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  • Eyefinity on HD 5700/5800 Series - 3 monitors setup [closed]

    - by Peter Stegnar
    Possible Duplicate: ATI Radeon 5770 Eyefinity - 3 monitors How to setup Eyefinity to support three monitors on HD 5700/5800 series card? Monitors are connected the following way: DVI-DVI-DisplayPort Currently driver does not allow me to do this. If I click on the third monitor to extended it, I get message to disable other one. Message: I am using DisplayPort adapter to DVI, so I do not have native displayPort monitor. Might be that a problem?

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  • MAPS windows 2008 r2 ent vs normal windows 2008 r2 ent edition [closed]

    - by KevinOelen
    Possible Duplicate: Can you help me with my software licensing question? Microsoft action pack subscription(MAPS) offers that many internal use of softwares, especially windows server 2008 R2 Ent 1 license with 10 CALs. Total cost is 329$ But when I looking for microsoft licensing and pricing guide, windows server 2008 r2 ent edition costs 3919$ with 25 cal. Do we really need to buy windows enterprise edition?

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  • file permissions and group ownership using sftp

    - by expaando
    Is there a way to have all files created by a particular user under sftp to have a specific group and file permissions? The user in question, of course, will be a member of the group, but it is not his primary group. In other words, is there a way for sftp to automatically duplicate the effects of umask and newgrp?

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  • Best City in Australia for Dedicated Hosting [closed]

    - by Brian Stinson
    We are looking to duplicate a copy of our database and application servers to serve our customers in Australia. We are looking for a well connected datacenter providing dedicated hosting (full machine rental) to take database updates and the like from our main site in Boston, MA. Which general location/city in Australia is best connected? East Coast? West Coast? If you have individual datacenter recommendations those are helpful as well.

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  • Bluray Drives: 2x vs 4x vs 6x vs 8x read/writespeed.

    - by Wesley
    Hi all, I couldn't find a duplicate question, but I was wondering what the differences are between different read/write speeds for Bluray drive. I'm planning on buying one for a build but don't know if I can cheap out on getting a Bluray 2x drive or spend more money for a quality Bluray 8x drive. Will I just experience more lag/buffering times for Bluray discs on a 2x and none for a 6x or 8x? Thanks in advance.

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  • Mac OS X = UNIX? [closed]

    - by lee
    Possible Duplicate: How Unix is Mac OS X? People always said ubuntu, linux is UNIX based OS, then how about mac os x? from mac os x terminal i can see most of the unix command are available does it mean mac os also built on UNIX?

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  • Do bookmarks slow down a browser?

    - by studiohack
    Possible Duplicate: http://superuser.com/questions/118236/do-bookmarks-slow-down-firefox-start-up Firefox 3.6 (and other browsers too): Do bookmarks slow down a browser in general? Not necessarily talking about start-up alone, but more about the actual browsing of webpages... What about if you have the bookmarks bar enabled, and many bookmarks in that bookmarks toolbar folder? Thanks! (OS is Windows 7)

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  • Iptables -gw parameter

    - by schoen
    I want to copy tcp traffic. i want to use these commands " iptables -A PREROUTING -t mangle -p tcp --dport 7 -j ROUTE --gw 1.2.3.4 --tee iptables -A POSTROUTING -t mangle -p tcp --sport 7 -j ROUTE --gw 1.2.3.4 --tee" like stated here http://stackoverflow.com/questions/7247668/duplicate-tcp-traffic-with-a-proxy but iptables keeps telling me "iptables v1.4.8: unknown option '--gw'" What can I do to fix this? With Kind Regards

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  • google android sdk [closed]

    - by user34373
    Possible Duplicate: google android with nmap I am trying to install a port scanner on android sdk which is installed on ubuntu.I have two problems: how to install any linux application on android SDK?? how to copy the data from the local hard drive to the emulator??

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  • remove addons from internet explorer 8 [closed]

    - by senthil
    Possible Duplicate: Why is it not possible to delete IE addons from the IE interface? In my "Manage Addons" dialog, there are lots of addons that I have no idea about. I never installed Java on my machine but a java addon is there. Then some other things. I am only able to disable them. How can I remove them and all the related files?

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  • Nginx $scheme doesn't always work while using SSL for one specific page

    - by jjiceman
    I read and followed this question in order to configure nginx to force SSL for one page (admin.php for XenForo), and it is working well for a few of the site administrators but is not for myself. I was wondering if anyone has any advice on how to improve this configuration: ... ssl_certificate example.net.crt; ssl_certificate_key example.key; server { listen 80 default; listen 443 ssl; server_name www.example.net example.net; access_log /srv/www/example.net/logs/access.log; error_log /srv/www/example.net/logs/error.log; root /srv/www/example.net/public_html; index index.php index.html; location / { if ( $scheme = https ){ rewrite ^ http://example.net$request_uri? permanent; } try_files $uri $uri/ /index.php?$uri&$args; index index.php index.html; } location ^~ /admin.php { if ( $scheme = http ) { rewrite ^ https://example.net$request_uri? permanent; } try_files $uri /index.php; include fastcgi_params; fastcgi_pass 127.0.0.1:9000; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_param HTTPS on; } location ~ \.php$ { try_files $uri /index.php; include fastcgi_params; fastcgi_pass 127.0.0.1:9000; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_param HTTPS off; } } ... It seems that the extra information in the location ^~ /admin.php block is unecessary, does anyone know of an easy way to avoid duplicate code? Without it it skips the php block and just returns the php files. Currently it applies https correctly in Firefox when I navigate to admin.php. In Chrome, it downloads the admin.php page. When returning to the non-https website in Firefox, it does not correctly return to http but stays as SSL. Like I said earlier, this only happens for me, the other admins can go back and forth without a problem. Is this an issue on my end that I can fix? And does anyone know of any ways I could reduce duplicate configuration options in the configuration? Thanks in advance!

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  • Unix style command line history in windows

    - by dean20007
    This may be a duplicate so feel free to close and point me in the right direction but is there a way of getting Unix style command line recall in windows. E.g. Opening a new command window and using the up arrow key will recall the last x number of statements. I know this works in the command window per command window session but is there a way to persist across sessions?

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  • Can I set up multiple accounts on DD-WRT? [closed]

    - by Greg Ros
    Possible Duplicate: Can I set up multiple accounts on DD-WRT? I want to set up multiple accounts on DD-WRT (accounts meaning, username-password pairs). Specifically, I want one to be used primarily for remote web management (though there is no reason to restrict the account to such). Is this possible? If so, how do I go about it? I'm running: Router Model TP-Link TL-WR1043ND Firmware Version DD-WRT v24-sp2 (08/07/10) std - build 14896

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  • Linux (Ubuntu 12.04) two gateways one nic

    - by David
    I have Ubuntu 12.04 Server edition Two gateways, both on 192.168.0. network, let's make them 192.168.0.1 and 192.168.0.2 I've read you should be able to add second gateway into /etc/network/interfaces, that it will build out all the routing automatically, but I get "duplicate option" error. So if I have one default gateway, let's say 0.1, and a connection comes through from the 0.2 gateway, my understanding is that it still tries to respond through 0.1 gateway. Can we change this behavior?

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  • PCI-e v2.0 video card in a PCI-e v1.0 slot? [closed]

    - by Kevin
    Possible Duplicate: Will a PCI-E V2.0 Graphics Card work with a PCI-E V1.0 Motherboard? Will a PCI-e 2.0 card work in a PCI-e 1.0 motherboard? Currently I've got an older ASUS M2N-E motherboard, and I would like get a newer video card (GTX 280 or similar) which will last me a while after I upgrade my motherboard at some point in the future. I currently have a 6600 GT which has served me well for a long time, but it's time to upgrade.

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  • How do I install multiple versions of Internet Explorer on Windows 7? [closed]

    - by Guy
    Possible Duplicate: Multiple versions of Internet Explorer on a machine I want to install multiple versions of Internet Explorer on Windows 7. Specifically versions 6, 7, and 8. (Currently I've got 8 installed.) How do I get those 3 versions installed side by side? (I need to do this to test and debug a web application on multiple Internet Explorer versions so other solutions to this end are also appreciated.)

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