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• How to maximise a window within a Windows remote desktop session

  - by user68234

  I'm logged in to a Windows 7 machine from a Windows 7 desktop, using the standard Remote Desktop client. Is there a key short cut to maximise a window within the remote desktop session (equivalent to Windows+up arrow)? I want the remote desktop session to NOT be full screen on my client machine, but to easily maximise windows on the remote session to the full size of the remote desktop window. Hope that makes sense. ;)

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• pam_unix(sshd:session) session opened for user NOT ROOT by (uid=0), then closes immediately using using TortiseSVN

  - by codewaggle

  I'm having problems accessing an SVN repository using TortoiseSVN 1.7.8. The SVN repository is on a CentOS 6.3 box and appears to be functioning correctly. # svnadmin --version # svnadmin, version 1.6.11 (r934486) I can access the repository from another CentOS box with this command: svn list svn+ssh://[email protected]/var/svn/joetest But when I attempt to browse the repository using TortiseSVN from a Win 7 workstation I'm unable to do so using the following path: svn+ssh://[email protected]/var/svn/joetest I'm able to login via SSH from the workstation using Putty. The results are the same if I attempt access as root. I've given ownership of the repository to USER:USER and ran chmod 2700 -R /var/svn/. Because I can access the repository via ssh from another Linux box, permissions don't appear to be the problem. When I watch the log file using tail -fn 2000 /var/log/secure, I see the following each time TortiseSVN asks for the password: Sep 26 17:34:31 dev sshd[30361]: Accepted password for USER from xx.xxx.xx.xxx port 59101 ssh2 Sep 26 17:34:31 dev sshd[30361]: pam_unix(sshd:session): session opened for user USER by (uid=0) Sep 26 17:34:31 dev sshd[30361]: pam_unix(sshd:session): session closed for user USER I'm actually able to login, but the session is then closed immediately. It caught my eye that the session is being opened for USER by root (uid=0), which may be correct, but I'll mention it in case it has something to do with the problem. I looked into modifying the svnserve.conf, but as far as I can tell, it's not used when accessing the repository via svn+ssh, a private svnserve instance is created for each log in via this method. From the manual: There's still a third way to invoke svnserve, and that's in “tunnel mode”, with the -t option. This mode assumes that a remote-service program such as RSH or SSH has successfully authenticated a user and is now invoking a private svnserve process as that user. The svnserve program behaves normally (communicating via stdin and stdout), and assumes that the traffic is being automatically redirected over some sort of tunnel back to the client. When svnserve is invoked by a tunnel agent like this, be sure that the authenticated user has full read and write access to the repository database files. (See Servers and Permissions: A Word of Warning.) It's essentially the same as a local user accessing the repository via file:/// URLs. The only non-default settings in sshd_config are: Protocol 2 # to disable Protocol 1 SyslogFacility AUTHPRIV ChallengeResponseAuthentication no GSSAPIAuthentication yes GSSAPICleanupCredentials yes UsePAM yes AcceptEnv LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY LC_MESSAGES AcceptEnv LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT AcceptEnv LC_IDENTIFICATION LC_ALL LANGUAGE AcceptEnv XMODIFIERS X11Forwarding no Subsystem sftp /usr/libexec/openssh/sftp-server Any thoughts?

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• Are my iptables secure?

  - by Patricia

  I have this in my rc.local on my new Ubuntu server: iptables -F iptables -A INPUT -i eth0 -p tcp --sport 22 -m state --state ESTABLISHED -j ACCEPT iptables -A OUTPUT -o eth0 -p tcp --dport 22 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A INPUT -i eth0 -p tcp --dport 22 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A OUTPUT -o eth0 -p tcp --sport 22 -m state --state ESTABLISHED -j ACCEPT iptables -A OUTPUT -o eth0 -p tcp --dport 9418 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A INPUT -i eth0 -p tcp --sport 9418 -m state --state ESTABLISHED -j ACCEPT iptables -A OUTPUT -o eth0 -p tcp --dport 5000 -m state --state NEW,ESTABLISHED -j ACCEPT # Heroku iptables -A INPUT -i eth0 -p tcp --sport 5000 -m state --state ESTABLISHED -j ACCEPT # Heroku iptables -A INPUT -p udp -s 74.207.242.5/32 --source-port 53 -d 0/0 --destination-port 1024:65535 -j ACCEPT iptables -A INPUT -p udp -s 74.207.241.5/32 --source-port 53 -d 0/0 --destination-port 1024:65535 -j ACCEPT iptables -A OUTPUT -o eth0 -p tcp --dport 443 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A INPUT -i eth0 -p tcp --sport 443 -m state --state ESTABLISHED -j ACCEPT iptables -P INPUT DROP iptables -P FORWARD DROP 9418 is Git's port. 5000 is a port used to manage Heroku apps. And 74.207.242.5 and 74.207.241.5 are our DNS servers. Do you think that this is secure? Can you see any holes here? Update: Why is it important to block OUTPUT? This machine will be used only by me.

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• ASP.NET Session Management - which SQL Server option?

  - by frumious

  We're developing some custom web parts for our WSS 3 intranet, and have just run into something we'd like to use ASP.NET sessions for. This isn't currently enabled on the development server. We'd like to use SQL Server as the storage mechanism, because the production environment is a web farm with very simple load-balancing. There are 3 options you can choose from to set up the SQL Server session storage, tempdb, default separate DB, named DB. Both tempdb and default separate DB create a new DB to store certain information in; tempdb stores the actual session info in tempdb, which doesn't survive a reboot, and default separate DB stores everything in the new DB. Since you've got to create the new DB either way, my question is this: why would you ever choose to store the session info in tempdb? The only thing I can think of is if you'd like to have the ability to wipe the session by rebooting the server, but that seems quite apocalyptic!

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• How can Facebook's session get mixed up because of NAT and/or Proxy

  - by Alex

  Have received some reports from a customer (a very large company) they reported issues from clients who are using Facebook. These clients claim that once in a while when they log in to Facebook they end up in someone else's session. I know that network is NATed then Proxied before getting to Facebook.com. Although I'm not able to explain how this issue can occur. Is it possible that the Proxy is not sending the right session back to the clients? How can they end up with someone else's session since Facebook is cookie based session?? Anyone seen this before?

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• Printing on Remote Desktop session

  - by Arindam Banerjee

  We have to connect a Windows 2008 server using Remote Desktop from Windows XP machine. A Barcode Printer is attached with XP machine and the printer is shared as Local Resource in RDC session to the server. On the server we have to print from an application which prints either to LPT port or shared printer (UNC path). For this I use to configure print pooling combining LPT1 and (Terminal Server) TSxxx port. As I don't know the option to access the Terminal Session printer via UNC path. But I have the following issues - Every time I connect to a remote session, the printer from my local Win XP machine is showing in Printers and Faxes on Win 2008 Server (Terminal Server), but I am not allowed to manage the Win XP printer from Terminal Server to enable pooling. On the server I have to change the security permission every time and then enable print pooling. How can I keep the security permission unchanged? Secondly I created a batch file to enable print pooling. rundll32 printui.dll,PrintUIEntry /Xs /n "Printer (from CLIENT)" Portname "LPT1:,TS005" But every time the printer in terminal session connects in diffrent terminal Session port. Any solution to make the TS port fixed? Help from anyone will be highly appreciated.

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• How can I delete current session in Chrome?

  - by Eric

  I'm using Google Chrome and want to delete the current session data on the fly. I can do this on Firefox with the web developer extension, but Chrome doesn't seem to have the same option in their webdev extension. So how can I do this? I realize that session data is stored on the server side and tracked in the browser with cookies. So really, I think what I want to do is delete cookies that are set to live for the session lifetime. Is there a way to do THAT in Chrome? "Delete browsing data" lets me delete all cookies from within a certain time period (for example, the last hour), but that could delete OTHER cookies on the site that I don't want to erase. I just want to delete the cookie being used to track my current session. Thanks y'all...

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• Static Content Caching in Sticky Session ?

  - by Ravi

  can we do Static Content caching in Sticky Session Servers. We use SqlStateServer to store the Session of the user. right now we are doing performance tuning in our application, so we decided to cache the static Content(images, css, js) for the applicaiton. so that it loads faster. Is it Good to cache the static content in Sticky Session ? If it's good, then can any one give me some links where i can read about it. right now i done following settings in my web config file <staticContent> <clientCache cacheControlCustom="public" cacheControlMode="UseMaxAge" cacheControlMaxAge="500.00:00:00" /> </staticContent> can this is the good code ? will it not affect our sticky session environment ? my goal is to cache the static images, css, Js for the application

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• ASP.Net Session Timing Out Rapidly

  - by Zac

  We have an ASP.Net 3.5 website running on Windows Server 2008 with IIS7. The session timeout period for this site is configured to be 20 minutes - however, it is currently lasting for between 40 and 50 seconds. After researching the problem we investigated several configuration values which could be involved in the timeout period but none of them are set to less than 20 minutes. The areas we look are as follows: web.config system.web/sessionState element (20 minutes). web.config system.web/authentication/forms element (not present, defaults to 30 minutes). Sites/{website}/ASP/Session Properties/Time-out (20 minutes). Application Pools/{appPool}/Advanced Settings/Process Model/Idle Time-out (20 minutes). We've also noted that the CPU is staying around 0% and that RAM usage is flat-lining around 1.07 GB (of 8 GB available) - so there is no performance-based reason for IIS to be recycling the Application Pool as far as we can tell. Are there any settings we've overlooked which could cause the session timeouts to be expiring so quickly? EDIT A couple of additional points: This is not occurring in development, only on the server. The session is not sliding (i.e. if we refresh the page a few times it still times out approximately 40 - 50 seconds after the session was created.

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• top process state column under FreeBSD

  - by Eric DANNIELOU

  When running top interactively, I can see various word in the state column : nanslp, biord, select, uwait, lockf, pause, kqread, piperd, sbwait ... Some like nanslp or kqread are self explanatory, others are not. Tried man pages : STATE is the current state (one of "START", "RUN" (shown as "CPUn" on SMP systems), "SLEEP", "STOP", "ZOMB", "WAIT", "LOCK" or the event on which the process waits), C is the processor number on which the process is executing (visible only on SMP systems) Tried search engines : stack overflow mailing lists archives Where may I get a complete list of possible process state under FreeBSD 9, and their meanings?

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• SharePoint Session Management - which SQL Server option?

  - by frumious

  We're developing some custom web parts for our WSS 3 intranet, and have just run into something we'd like to use ASP.NET sessions for. This isn't currently enabled on the development server. We'd like to use SQL Server as the storage mechanism, because the production environment is a web farm with very simple load-balancing. There are 3 options you can choose from to set up the SQL Server session storage, tempdb, default separate DB, named DB. Both tempdb and default separate DB create a new DB to store certain information in; tempdb stores the actual session info in tempdb, which doesn't survive a reboot, and default separate DB stores everything in the new DB. Since you've got to create the new DB either way, my question is this: why would you ever choose to store the session info in tempdb? The only thing I can think of is if you'd like to have the ability to wipe the session by rebooting the server, but that seems quite apocalyptic!

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• Cannot run gnome-session

  - by Brian

  I'm having issues running an X Windows session on a RHEL5 64-bit server - whenever I execute the command "gnome-session &", the process goes into the background but nothing happens. I have Exceed installed on my Windows machine which is running when I try to start the gnome-session. I've tried just starting firefox by itself instead of the whole gnome session, but it doesn't work either. Any suggestions? BTW, here's the error message I get when I try to start firefox: firefox: Fatal IO error 104 (Connection reset by peer) on X server localhost:10.0.

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• IIS no longer saving session variables

  - by John

  I'm running IIS v7 on a Win7 development machine. I have PHP code that saves session variables and calls them back later. This has been working on this machine for some time. For some reason now, the session variables dissapear immediatly after saving. Code that used to work fine on http://localhost/, suddenly now does not. I have tested different browsers - the vars dissapear regardless of browser. I have tested identical code on different servers. The problem exists only on this development machine. I tried some code that saves a session var, then reads it back and displays it, then shows a link to click on to read it back and display again. What happens is the session var DOES get written and read back and displayed ok. But when you click the link to view it again, it's gone. I don't recall making any changes to IIS. But I did run several malware scanners and clean-up tools. Is anyone aware of any setting in IIS that disallows session vars? Any other throughts?

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• In 12.04: Failed to load session 'ubuntu' [closed]

  - by Stéphane

  Possible Duplicate: There's an issue with an Alpha/Beta Release of Ubuntu, what should I do? I'm using 12.04 beta. Today I was prompted to install some updates, which I did, followed by a reboot. On reboot, X starts, but all I see is a single dialog window in the middle of the screen with the text: Failed to load session 'ubuntu' I don't even see the mouse, or the login screen, just this 1 line of text. When I hit CTRL+ALT+F1 to run dist-upgrade from a command prompt, I get this: The following packages have been kept back: libgnome-desktop-3-2 So to see why it was kept back, I tried the following: $ sudo apt-get install libgnome-desktop-3-2 ... The following packages have unmet dependencies: libgnome-desktop-3-2 : Depends: gnome-desktop3-data (= 3.3.92-0ubuntu1) but 3.3.91-0ubuntu2 is to be installed E: Unable to correct problems, you have held broken packages. Anyone else seeing this, or have an idea how to fix it? If you're going to close it as a duplicate, can you please link to the duplicate question?

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• Persisting model state in ASP.NET MVC using Serialize HTMLHelper

  - by shiju

  ASP.NET MVC 2 futures assembly provides a HTML helper method Serialize that can be use for persisting your model object. The Serialize  helper method will serialize the model object and will persist it in a hidden field in the HTML form. The Serialize  helper is very useful when situations like you are making multi-step wizard where a single model class is using for all steps in the wizard. For each step you want to retain the model object's whole state.The below is serializing our model object. The model object should be a Serializable class in order to work with Serialize helper method. <% using (Html.BeginForm("Register","User")) {%><%= Html.Serialize("User",Model) %> This will generate hidden field with name "user" and the value will the serialized format of our model object.In the controller action, you can place the DeserializeAttribute in the action method parameter. [HttpPost]               public ActionResult Register([DeserializeAttribute] User user, FormCollection userForm) {     TryUpdateModel(user, userForm.ToValueProvider());     //To Do } In the above action method you will get the same model object that you serialized in your view template. We are updating the User model object with the form field values.

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• Persisting model state in ASP.NET MVC using Serialize HTMLHelper

  - by shiju

  ASP.NET MVC 2 futures assembly provides a HTML helper method Serialize that can be use for persisting your model object. The Serialize  helper method will serialize the model object and will persist it in a hidden field in the HTML form. The Serialize  helper is very useful when situations like you are making multi-step wizard where a single model class is using for all steps in the wizard. For each step you want to retain the model object's whole state.The below is serializing our model object. The model object should be a Serializable class in order to work with Serialize helper method. <% using (Html.BeginForm("Register","User")) {%><%= Html.Serialize("User",Model) %> This will generate hidden field with name "user" and the value will the serialized format of our model object.In the controller action, you can place the DeserializeAttribute in the action method parameter. [HttpPost]               public ActionResult Register([DeserializeAttribute] User user, FormCollection userForm) {     TryUpdateModel(user, userForm.ToValueProvider());     //To Do } In the above action method you will get the same model object that you serialized in your view template. We are updating the User model object with the form field values.

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• Oracle OpenWorld Series: Amit Zavery’s General Session

  - by Michelle Kimihira

  Join Amit Zavery, Vice President of Fusion Middleware Product Management in this strategy and roadmap session for Fusion Middleware, Innovation Platform for Oracle Apps, including Oracle Fusion Applications (GEN9504) on Monday, October 1st at 10:45 AM – 11:45 AM in Moscone West, 3002/3003. Learn the value of Oracle Fusion Applications’ architecture and the role of Oracle Application Development Framework, Oracle SOA Suite, Oracle Business Intelligence, Oracle WebCenter, and Oracle Identity Management. Hear how customers like Boeing and Electronic Art have implemented Oracle Fusion Middleware to improve productivity and lower IT costs today with Oracle Applications and lay a foundation for business innovation. Boeing, world’s largest aerospace company will talk about their need to automate, streamline, and standardize a common process for Order Capture through Orchestration and Financial/ Contract Closeout activities, while dramatically reducing costs. Electronic Art, leading global interactive entertainment software company will talk about their challenge with overwhelming amount of data arriving in different formats and their need to rationalize their architecture to handle this transformation. Additional Information ·         Relevant Blogs: Oracle OpenWorld Countdown Begins ,  Best of Oracle Fusion Middleware, Fusion Middleware for Enterprise Applications, Oracle OpenWorld Blog ·         Focus On Docs: Best of Oracle Fusion Middleware, Fusion Middleware for Enterprise Applications ·         Product Information on Oracle.com: Oracle Fusion Middleware ·         Subscribe to our regular Fusion Middleware Newsletter ·         Follow us on Twitter and Facebook

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• Bash script not adding variables to session

  - by travega

  I have a bash script that I have added as a startup application. It does a bunch of exports and alias assignment. #! /bin/bash alias devhm='cd ${DEV_HOME}; ll'; alias wlhm='cd ${WL_HOME}; ll'; alias dirch='watch --interval=1 "ls -la"'; alias vols='watch --interval=1 "df -h"'; alias svn-update='svn update --depth infinity ./*'; alias mci="~/mci.sh"; alias vncserver="vncserver -geometry 1680x1050"; alias ..="cd .."; alias hist="history | grep "; export PROXY_HOST=proxy.my.setup; export PROXY_PORT=3128; export LD_LIBRARY_PATH=$LD_LIBRARY_PATH/usr/lib/oracle/12.1/client64/lib; export ORACLE_HOME=/usr/lib/oracle/12.1/client64; export TNS_ADMIN=${ORACLE_HOME}/network/admin; echo "DONE!"; But none of these values are available in my terminal sessions anymore. Even when I run the script straight into the terminal like so: ./setup.sh I see the "DONE!" prompt printed but no aliases or env variables are set. If I copy and paste the contents of the file into the terminal the aliases and env variables are set. I have tried adding a line to execute the script from .bashrc also but still no aliases or env variables set. Any ideas what might be going on here? Also could anyone suggest a better way to have these env variables/aliases added to every terminal session?

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• I thought everyone did it like this – Training Session Code Management

  - by Fatherjack

  One of an occasional series of blogs about things that I do that perhaps others don’t. From very early on in my dealings with SQL Server Management Studio I started using Solutions and Projects. This means that I started using them when writing sessions and it wasn’t until speaking with someone at PASS Summit 2013 that I found out that this was a process that was unheard of by some people. So, here we go, a run through how I create and manage code and other documents that I use in presentations. For people unsure what solutions and projects are; • Solution – a container for one or more projects. • Project – a container for files, .sql files are grouped as Queries, all other files are stored as Misc. How do I start? Open Management Studio as normal, and then click File | New and select Project This will bring up the New Project dialog box and you can select/add details as necessary in the places indicated. If this is the first project you are creating then be sure to select the Create directory for solution check box (4). If know in advance that you are going to have more than one project in the solution then you may want to edit the Solution name (3) as by default it will take the name of the project that you enter at (2). This will lead you to the following folder structure (depending on the location that you chose in 3) above. In SSMS you need to turn on the Solution Explorer, either via the View menu or pressing Ctrl + Alt + L                   This will bring up a dockable window that will let you quickly access the files that you choose to include in the Solution.                     Can we get to work and write some code yet please? Yes, we can. As with many Microsoft products there are several ways to go about this, let’s look at the easiest way when creating new code. When writing a presentation I usually start from the position we are currently in – a brand new solution and project with no code. Later on we will look at incorporating existing code files into the Project where we need it. Right-click on the Project name and choose Add New Query           As soon as you click this you will be prompted to select the sql server that you want to connect to and once you have done that you will have your new query open in the text editor and the Solution Explorer will now look like this, showing your server connection and your new query.               And the Project folder will look like this         Now once you have written your code don’t press save, choose Save As and give the code a better name than QueryX.sql. SSMS will interpret this as a request to rename Query1 and your Project and the Project folder will show that SQLQuery1.sql no longer exists but there is now a file named as you requested. If you happen to click save in error then right-click the query in the project and choose rename.               You can then alter the name as you like, even when open in the SSMS text editor, and the file will be renamed. When creating a set of scripts for a presentation I name files with a numeric prefix so that when they are sorted by name they are in the order that I need to use them during the session. I love this idea but I’ve got loads of existing scripts I want to put in Projects Excellent, adding existing files to a project is easy, let’s consider that you have query files in your My Documents folder and you want to bring them into the Project we have just created. Right-click on the Project and choose Add | Existing Item           Navigate to the location of your chosen file and select it. The file will open in SSMS text editor and the Project will be updated to show that the selected query is now part of your project. If you look in Windows Explorer you will see that the query file has been copied into the Project folder, the original file still remains in your My Documents (or wherever it existed). I’ll leave it as an exercise for the reader to explore creating further Projects within a solution but will happily answer questions if you get into difficulties. What other advantages do I get from this? Well, as all your code is neatly in one Solution folder and the folder contains only files that are pertinent to the session you are presenting then it makes it very easy to share this code, simply copy the whole folder onto a USB stick, Blog, FTP location, wherever you choose and it’s all there in one self-contained parcel. You don’t have to limit yourself to .sql query files, you can add any sort of document via the Add Existing Item method, just try it out. Right-click on the protect and choose Add | Existing Item           Change the file type filter.                       You can multi select items here using Ctrl as you click each item you want. When you are done, click the Add button and the items will be brought into your project.                 Again, using this process means the files are copied into the project folder, leaving you original files untouched in their original location. Once they are here you can double click them in the SSMS Solution Explorer to open them, for files with a specific file type then the appropriate application will be launched – ie Word, Excel etc. However, if the files are something that the SSMS Text editor can display then they will open in a tab in SSMS. Try it out with a text file or even a PS1 file … This sounds excellent but what do I need to watch out for? One big thing to consider when working like this is the version of SSMS that you are using. There is something fundamentally different between the different versions in the way that the project (.ssmssqlproj) and solution (.sqlsuo and .ssmssln) files are formatted. If you create a solution in an older version of SSMS and then open it in a newer version you will be given the option to upgrade it. Once you do this upgrade then the older version of SSMS will not be able to open the solution any more. Now this ranks as more of an annoyance than disaster as the files within the projects are not affected in any way, you would just have to delete the files mentioned and recreate the solution in the older version again. Summary So, here we have seen how using SSMS Projects and Solutions can help keep related code files (and other document types) together in a neat structure so that they can be quickly navigated during a presentation and it also makes it incredibly simple to distribute your code and share it with others. I hope this is of use to you and helps you bring more order into your sql files, whether you are a person that does technical presentations or not, having your code grouped and managed can make for a lot of advantages as your code library expands.  

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• Schedule for my session at MIX10

  - by Laurent Bugnion

  Microsoft has published the schedule for the MIX10 sessions. I have a sweet spot, and I dearly hope that it stays this way (Last year I had a great spot, but it was changed last minute and then I had a much better one, “competing” against Vertigo and their Playboy app… yeah try to explain to a bunch of geeks that MVVM is better than Playboy… good luck with that ;) Anyway, this year my sweet spot is on the very first day of the conference (there are workshops on Sunday, but this qualifies as pre-conference), Monday after the keynote which should get everyone pumped and excited. Schedule and location I would be really happy to meet y’all at Understanding the Model-View-ViewModel Pattern in Lagoon F on Monday at 2:00 PM http://live.visitmix.com/MIX10/Sessions/EX14 See you in Vegas (or in video…) Everything I saw so far hints that this should be a very, very exciting edition of MIX, maybe the most electrifying ever. The great news is that everything will be available even if you cannot make it: The keynotes are typically streamed live, and if you remember last year’s experience at PDC, it is a really good alternative. Built with Silverlight, the feed uses smooth streaming (adjusting the quality according to your bandwidth automatically), possibility to pause and rewind if you miss something, and a great picture quality. As for the sessions, the message at MIX is that the videos will be available online approximately 24 hours after the session is being held. This is a great feat! So, see you in Vegas (or in video)! Cheers, Laurent

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• TechEd 2012 - last session

  - by Stefan Barrett

  Nearly over. For last session attending a talk on c++ apps in windows metro. When I came to TechEd I didn't think I would attend so many sessions on c++, but somehow this has proved more interesting this year. While .net 4.5 is interesting, been playing with it for a while now, so not a ton of surprises. Of course, i still want it at work, but who knows how long that will take - so will just have to use it at home. Once I get the licensing sorted out. So expensive. I've been pleasantly surprised with windows 8, and will be trying that out, and at least that is covered on technet. While the weather has not always been perfect during TechEd's, this is the worst I've seen it so far - it's wet outside. Next years conference in new Orleans should be interesting, well out of the conference itself that is. I do like conferences where it's held within the city itself, unlike Orlando where there isn't really anything here.

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• SQL Bits X – Temporal Snapshot Fact Table Session Slide & Demos

  - by Davide Mauri

  Already 10 days has passed since SQL Bits X in London. I really enjoyed it! Those kind of events are great not only for the content but also to meet friends that – due to distance – is not possible to meet every day. Friends from PASS, SQL CAT, Microsoft, MVP and so on all in one place, drinking beers, whisky and having fun. A perfect mixture for a great learning and sharing experience! I’ve also enjoyed a lot delivering my session on Temporal Snapshot Fact Tables. Given that the subject is very specific I was not expecting a lot of attendees….but I was totally wrong! It seems that the problem of handling daily snapshot of data is more common than what I expected. I’ve also already had feedback from several attendees that applied the explained technique to their existing solution with success. This is just what a speaker in such conference wish to hear! :) If you want to take a look at the slides and the demos, you can find them on SkyDrive: https://skydrive.live.com/redir.aspx?cid=377ea1391487af21&resid=377EA1391487AF21!1151&parid=root The demo is available both for SQL Sever 2008 and for SQL Server 2012. With this last version, you can also simplify the ETL process using the new LEAD analytic function. (This is not done in the demo, I’ve left this option as a little exercise for you :) )

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• CRM On Demand Performance Tips - Live Web Session on April 20, 2010

  - by Cheryl

  The CRM On Demand Customer Care specialists have another live Web session coming up - this one is about performance - issues, tips, and considerations. This is a part of their Web series, where they pick topics that they hear a lot of questions or concerns about from customers and run live (and free) 1-hour Web sessions about them. Here are the details for this event: Event Title: CRM On Demand Performance Brandon (Hank) Henrie will present some of the top CRM On Demand performance questions and issues that customers raise and some tips and tricks that you can use to avoid them. He will point out good resources that can help and tips for logging performance-related service requests, when all else fails. Date: April 20, 2010 Time: 10:00 am (UTC-07:00 Arizona) How to join: 1. Dial 1-866-682-4770 to access the conference line. 2. Enter the conference code - 6241996 and press # 3. Follow the instructions to record your name and press # 4. Enter the meeting passcode - 1212 and press # 5. Follow the instructions below to join the web portion of the conference. The Web Conference Go to the Oracle Web Conference site: https://strtc.oracle.com Prior to the event: Click the New User button then run the New User Test. (If you have difficulties installing the web conference software try downloading the conference software from the test status window and installing manually.) To join the event: 1. Enter the conference information In the Join Conference box: Conference ID: 6566623 Your Name 2. Click the Join Conference button. Watch for announcements of future sessions on different topics. And, let us know what you think!

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• State of the art Culling and Batching techniques in rendering

  - by Kristian Skarseth

  I'm currently working with upgrading and restructuring an OpenGL render engine. The engine is used for visualising large scenes of architectural data (buildings with interior), and the amount of objects can become rather large. As is the case with any building, there is a lot of occluded objects within walls, and you naturally only see the objects that are in the same room as you, or the exterior if you are on the outside. This leaves a large number of objects that should be occluded through occlusion culling and frustum culling. At the same time there is a lot of repetative geometry that can be batched in renderbatches, and also a lot of objects that can be rendered with instanced rendering. The way I see it, it can be difficult to combine renderbatching and culling in an optimal fashion. If you batch too many objects in the same VBO it's difficult to cull the objects on the CPU in order to skip rendering that batch. At the same time if you skip the culling on the cpu, a lot of objects will be processed by the GPU while they are not visible. If you skip batching copletely in order to more easily cull on the CPU, there will be an unwanted high amount of render calls. I have done some research into existing techniques and theories as to how these problems are solved in modern graphics, but I have not been able to find any concrete solution. An idea a colleague and me came up with was restricting batches to objects relatively close to eachother e.g all chairs in a room or within a radius of n meeters. This could be simplified and optimized through use of oct-trees. Does anyone have any pointers to techniques used for scene managment, culling, batching etc in state of the art modern graphics engines?

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• Summary of the Solaris 11 webcast's livechat QnA session

  - by Karoly Vegh

  This is a followup post to the previous summary on the "What's new with Solaris 11 since the launch" webcast. That webcast has had a chatroom for a live Questions and Answers session running. I went through the archive of those and compiled a list of some of the (IMHO) most relevant and most frequently asked questions, I'd like to share. This is the first part, covering the QnA of Session I and II of the webcast, in a followup post we can have a look of the rest of the sessions if required - let me know in the comments. Also, should you have questions, as usual, feel free to ask those there, too.  ...and here come the answered questions:  When will Exadata be based on Solaris in place of Oracle Enterprise Linux?Exadata offers both Solaris 11 or Oracle Enterprise Linux.  The choice can be made at deployment time based on your OS needs.What are all other benefits and futures avilable in solaris 11 (cloud O.S.) compared to cloud based Red Hat Linux and Windows?suggest you check out our cloud white paper for a view of this. Also the OTN Solaris 11 page has some good articles. Here are the links:  http://www.oracle.com/technetwork/server-storage/solaris11/documentation/o11-106-sol11-cloud-501066.pdf http://www.oracle.com/technetwork/server-storage/solaris11/overview/index.htmlWill 11.1 have a more complete IPS respository for Oracle and FOSS software?Yes, we are adding additional packages to the various package repositories. Since Solaris 11 was launched, both the Oracle Solaris Studio tools as well as Oracle Solaris Cluster have been made available along with numerous new FOSS packages. We will continue to be adding additional Oracle products and open source packages in the future. Will Exadata be based on Sparc in place of intel-amd x86 in next future ?We can't publically discuss futures, but we actually have a SPARC version of Exadata today, it's called SuperCluster, this is such a powerfull multipurpose system that it actually have multiple personalities built into one system: Exadata, Exalogic, and it can be a general purpose platform if you want. Have I understood this right? Livepatching KSplice-style is coming to Solaris 11 too?We're looking at that for certain types of Solaris patches in the future.Will there be a security framework like SST/JASS for Solaris 11?We can't talk about the future projects on a public forum, but we recognize the need for SST/JASS and want to address this as soon as possible. On the other side there are a whole bunch of "best practices" that are now embedded into Solaris 11 by default, so out of the box Solaris 11 should already address part of what SST/JASS gave you. (For example we did a lot of work on improving the auditing performance so that we can now have it turned on by default). On x86 can install VirtualBox in a Zone and use that to host other OSes.Yes, this was one of the first things we made sure would work when we acquired VirtualBox when we were still Sun Microsystems. If I have a Solaris 11 Control Domain on a T-series, can I run a Solaris 10 Ldom with Solaris 8 branded containers?Yes, you can.Is Oracle Solaris free or do we need to purchase?Solaris is free, the entitlement to run it comes either with a Sun system (new or historical) or for 3rd party systems the entitlement comes with a support contract. Note that for production use you will be expected to get a support contract. If you don't want to use the Solaris system (Sun or 3rd party) for production use (i.e. development) you can get an OTN license on the Oracle Technical Network website. Will encryption and deduplication both work on a share?This should work at the same time. What approaches does Solaris use to monitor usage?There are many different tools in Solaris to monitor usage. The main ones are the "stats" (vmstat, mpstat, prstat, ...), the kstat interface, and DTrace (to get details you couldn't see before). And then there are layered tools that can interface with these tools (Ops Center, BMC, CA, Tivoli, ...) Apart little-endian, big-endian how is it easy to port Solaris applications on Sparc to x86 and vice-versa ?Very easy. Except for certain hardware specific applications (those that utilize hardware specific drivers), all of the same Oracle Solaris APIs exist for all architectures. Is IPS based patching aware of the fact that zones can reside on ZFS and move from one physical server to another ?IPS is definitely aware of zones and uses ZFS to support boot environments for non-global zones in the same way that's used for the global zone. With respect to moving a zone from one physical server to another, Solaris 11 supports to the same zone attach/deattach method that was introduced in Solaris 10. Is vnic support in Ldoms planned?This is currently being investigated for a future LDOM release. Is it possible with the new patching system to build a system later with the same patch level as a system built a few months earlier?Yes, you can choose/define exactly which version should go to the system and it will always put the same bits in place. The technical answer is that you choose the version of the "entire" package you want on the system and the rest flows from there. Is it in the plans to allow zones to add/remove zpools to running zones dynamically in future updates?Work in this area is currently under investigation. Any plans to realese Solaris 11 source code? i.e. opensolaris?We currently can't comment on publicly releasing the source code. If you need/want this access please let your Oracle account team know. What about VirtualBox and Solaris11 for virtualization?Solaris 11 works great with VirtualBox, as both a client and a host system. Will Oracle DB software eventually be supplied as IPS packages? When?We don't have a date yet but this is actively being worked on. What are the new artifacts in Oracle Solaris 11 than the previous versions?There are quite a few actually. The best start is to look at our "Evaluate Solaris 11" page, and there you also can find a Transition Guide. http://www.oracle.com/technetwork/server-storage/solaris11/overview/evaluate-1530234.html So, this seems just like RedHat's YUM environment?IPS offers certain features beyond those in YUM or other packaging systems. For example, IPS works with ZFS and Solaris Boot Environments to provide a safe environment for software lifecycle management so that changes can be reverted by switching to an older boot environment. With Zones on solaris 11, can I do paravirtualitation?The great thing about zones is you don't *need* paravirtualization. You're making the same direct kernel calls that you would outside of a zone.  It's an incredibly significant performance win over hypervisor-based virtualization. Are zones/containers officially supported to run Oracle Databases?  EBIZ?Hi Calvin, the answer is yes, here is the support matrix for DB:  http://www.oracle.com/technetwork/database/virtualizationmatrix-172995.html I've found some nasty bugs in Solaris 11 (one of which today) that have been fixed in community forks (i.e., Illumos). Will Oracle ever restart collaboration with the community?We continue to work with the community, just not as open on all projects as we did before (For example IPS is an open project) and the source of more than half of the Solaris packages is posted on our opensource websites. I can't comment on what we will do in the future. And with regards to bugs please file them through the support organization and we will get them resolved. Is zpool vdev removal on-the fly now possible ?This issue is actively being investigated although we don't have a date for when this feature will be available. Is pgstat now the official replacement for corestat ?It's intended to provide similar functionality Where are the opensource website?For Oracle Solaris, visit http://www.oracle.com/technetwork/opensource/systems-solaris-1562786.html As a cloud-scale virtualization, is it going to be easier to move zones between machines? maybe even automatic in case of a hardware failure?Hi Gashaw, we already have customers that have implemented what they refer to as "flying zones" that they can move around very easily. They use Solaris Cluster to do this. What about VMware vMotion like feature?We have secure live migration with both Logical Domains on SPARC T series systems, and with Oracle VM on x86 systems. When running Solaris 10/11 on an enterprise server with a lot of zones, what are best practises commands to show the system is running fine? (has enough hardware resources). For example CPU / Memory / I/O / system load. What are the recommended values?For Solaris 11, look into the new zonestat(1M) command that provides a great deal of information about zone utilization. In addition, there is new work underway in providing additional observability in areas such as per-zone file system I/O. Java optimizations done with Solaris 11? For X86 platforms too? Where can I find more detail about this?There is lots of work that go into optimizing Java for Oracle Solaris 10 & 11 on both SPARC and x86. See http://www.oracle.com/technetwork/articles/servers-storage-dev/solarisforjavadevelop-168642.pdf What is meant by "ZFS Shadow Migration"?It's a way to migrate data from another file system to ZFS: http://docs.oracle.com/cd/E23824_01/html/E24456/filesystem-3.html Is flash archive available with S11?Flash archive is not.  There is a procedure for disaster recovery, and we're working on a modern archive-based deployment tool for a future update.  The disaster recovery tool is here: http://www.oracle.com/technetwork/articles/servers-storage-admin/o11-091-sol-dis-recovery-489183.html  You can also use Distribution Constructor to build common golden images. Will solaris 11 be available on the ODA soon?The idea's under evaluation -- we'll share your interest with the team. What steps can be taken to ensure that breaches of security are identified quickly?There are a number of tools, including the "bart" tool and "pkg verify" to ensure that software has not been compromised.  Solaris Audit can also be used to detect unauthorized access.  You can also use Immutable Zones to protect against compromise.  There are a wide variety of security tools, and I've covered only a few. What is the relation from solaris to java 7 speed optimization?There is constant work done between the Oracle Solaris and Java teams on performance optimizations. See http://docs.oracle.com/javase/7/docs/technotes/guides/vm/performance-enhancements-7.html for examples. What is the difference in the Solaris 11 installation compared to solaris 10 ? where i can find the document describing basic repository concepts ?The best place to start is: http://www.oracle.com/technetwork/server-storage/solaris11/index.html Hope you found the post useful. For questions, input, requests for the second half of the QnA, please find the comment section below.  -- charlie  

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