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• updating changes from one database to another database in the same server

  - by Pavan Kumar

  I have a copy of client database say 'DBCopy' which already contains modified data. The copy of the client database (DBCopy) is attached to the SQL Server where the Central Database (DBCentral) exists. Then I want to update whatever changes already present in DBCopy to DBCentral. Both DBCopy and DBCentral have same schema. How can i do it programatically using C#.NET maybe with a button click. Can you give me an example code as how to do it?. I am using SQL Server 2005 Standard Edition and VS 2008 SP1. In the actual scenario there are about 7 client database all with same schema as the central database. I am bringing copy of each client database and attach it to Central Server where the central database resides and try to update changes present in each copy of the client database to central database one by one programatically using C# .NET . The clients and the central server are physically seperate machines present in different places. They are not interconnected. I need to only update and insert new data. I am not bothered about deletion of data. Thanks and regards Pavan

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• Complex derived attributes in Django models

  - by rabidpebble

  What I want to do is implement submission scoring for a site with users voting on the content, much like in e.g. reddit (see the 'hot' function in http://code.reddit.com/browser/sql/functions.sql). My submission model currently keeps track of up and down vote totals. Currently, when a user votes I create and save a related Vote object and then use F() expressions to update the Submission object's voting totals. The problem is that I want to update the score for the submission at the same time, but F() expressions are limited to only simple operations (it's missing support for log(), date_part(), sign() etc.) From my limited experience with Django I can see 4 options here: extend F() somehow (haven't looked at the code yet) to support the missing SQL functions; this is my preferred option and seems to fit within the Django framework the best define a scoring function (much like reddit's 'hot' function) in my database, and have Django use the value of that function for the value of the score field; as far as I can tell, #2 is not possible wrap my two step voting process in a suitably isolated transaction so that I can calculate the voting totals in Python and then update the Submission's voting totals without fear that another vote against the submission could be added/changed in the meantime; I'm hesitant to take this route because it seems overly complex - what is a "suitably isolated transaction" in this case anyway? use raw SQL; I would prefer to avoid this entirely -- what's the point of an ORM if I have to revert to SQL for such a common use case as this! (Note that this coming from somebody who loves sprocs, but is using Django for ease of development.) Before I embark on this mission to extend F() (which I'm not sure is even possible), am I about to reinvent the wheel? Is there a more standard way to do this? It seems like such a common use case and yet in an hour of searching I have yet to find a common solution...

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• basic SQL atomicity "UPDATE ... SET .. WHERE ..."

  - by elgcom

  I have a rather basic and general question about atomicity of "UPDATE ... SET .. WHERE ..." statement. having a table (without extra constraint), +----------+ | id | name| +----------+ | 1 | a | +----+-----+ now, I would execute following 4 statements "at the same time" (concurrently). UPDATE table SET name='b1' WHERE name='a' UPDATE table SET name='b2' WHERE name='a' UPDATE table SET name='b3' WHERE name='a' UPDATE table SET name='b4' WHERE name='a' is there only one UPDATE statement would be executed with table update? or, is it possible that more than one UPDATE statements can really update the table? should I need extra transaction or lock to let only one UPDATE write values into table? thanks

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• Updating database row from model

  - by Jamie Dixon

  Hey everyone, I'm haing a few problems updating a row in my database using Linq2Sql. Inside of my model I have two methods for updating and saving from my controller, which in turn receives an updated model from my view. My model methods like like: public void Update(Activity activity) { _db.Activities.InsertOnSubmit(activity); } public void Save() { _db.SubmitChanges(); } and the code in my Controller likes like: [HttpPost] public ActionResult Edit(Activity activity) { if (ModelState.IsValid) { UpdateModel<Activity>(activity); _activitiesModel.Update(activity); _activitiesModel.Save(); } return View(activity); } The problem I'm having is that this code inserts a new entry into the database, even though the model item i'm inserting-on-submit contains a primary key field. I've also tried re-attaching the model object back to the data source but this throws an error because the item already exists. Any pointers in the right direction will be greatly appreciated. UPDATE: I'm using dependancy injection to instantiate my datacontext object as follows: IMyDataContext _db; public ActivitiesModel(IMyDataContext db) { _db = db; }

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• JSF2: Re-render all components on page that have a given ID, without absolute paths

  - by tlind

  Is there any way in JSF 2.0/PrimeFaces of re-rendering all components (using the PrimeFaces update="id1 id2..." attribute or the <f:ajax render="..."/> tag) that have got a given ID, regardless of whether they are in the same form that contains the button triggering the AJAX re-render or not? For example, I want my button to re-render all sections on a page that visualize the user's current shopping basket. Right now, I always have to specify the absolute path to the components that I want to get updated, e.g. update=":header:basket :left-sidebar:menu:basket" which is rather impractical if the structure of the page changes (besides, I have not been able to figure out the correct path for one of these components). I already tried to implement a custom EL function like this, which traverses the component tree: update="{utilBean.findAllComponentsMatchingId('basket')}" but at the time that function is evaluated, apparently not the entire component tree has been set up as it doesn't contain the components I am looking for. How can I deal with this? There certainly must be an easy way of doing AJAX-based updates of sections of the page that are not part of the current <h:form>? Thanks!

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• Rails: update_attribute vs update_attributes

  - by Sam

  Object.update_attribute(:only_one_field, "Some Value") Object.update_attributes(:field1 => "value", :field2 => "value2", :field3 => "value3") Both of these will update an object without having to explicitly tell AR to update. Rails API says: for update_attribute Updates a single attribute and saves the record without going through the normal validation procedure. This is especially useful for boolean flags on existing records. The regular update_attribute method in Base is replaced with this when the validations module is mixed in, which it is by default. for update_attributes Updates all the attributes from the passed-in Hash and saves the record. If the object is invalid, the saving will fail and false will be returned. So if I don't want to have the object validated I should use update_attribute. What if I have this update on a before_save, will it stackoverflow? My question is does update_attribute also bypass the before save or just the validation. Also, what is the correct syntax to pass a hash to update_attributes... check out my example at the top.

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• Visual Studio 2012 Update 3 disponible et marque la fin des mises à jour pour cette version de l'EDI

  Visual Studio 2012 Update 3 CTP 1 disponible avec des améliorations de performance et plusieurs correctifs de boguesQuelques semaines seulement après la sortie de Visual Studio 2012 Update 2, Microsoft dévoile la prochaine mise à jour de son environnement de développement.L'éditeur vient de publier la Community Technology Preview (CTP) de Visual Studio 2012 Update 3, qui apporte des corrections de bogues, des améliorations de performance et quelques nouveautés.Avec cette troisième version de Visual Studio 2012 Update, Microsoft donne l'impression d'avoir adopté un rythme de mises à jour plus rapide pour l'EDI, axé sur le trimestr...

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• How can I automatically update Flash Player whenever a new version is released? [closed]

  - by user219950

  Summary: Flash Player Update Service doesn't run on a reliable schedule, and doesn't automatically download and apply updates when it does run. Given the importance of having an up-to-date version of Flash Player installed (for those of us who don't use Chrome with its built-in player), I would like to find a way to ensure that new updates are promptly detected and installed. What follows are the details of my efforts to solve this problem on my own... Appendix A: Flash Player Update Service OK, way back in Flash Player 11.2 (or so?) Adobe added the Flash Player Update Service (FlashPlayerUpdateService.exe), it was supposed to keep the Flash Player updated... Upon installation, FPUS is configured to run as a Windows Service, with Start Type set to Manual. A Scheduled Task (Adobe Flash Player Updater.job) is added to start this service every hour. So far, so good - this set-up avoids having a constantly-running service, but makes sure that the checks are run often enough to catch any updates quickly. Google's software updater is configured in a similar fashion, and that works just fine... ...And yet, when I checked the version of my installed Flash Player, I found it was 11.6.602.180, which, based on looking at the timestamps of the files in C:\Windows\System32\Macromed\Flash was last updated (or installed) on Tue, Mar 12, 2013 --- 3/12/13, 5:00:08pm. I made this observation on Thu, Apr 25, 2013 --- 4/25/13, 7:00:00pm, and upon checking Adobe's website found that the current version of Flash Player was 11.7.700.169. That's over a month since the last update, with a new one clearly available on the website but with no indication that the hourly check running on my machine has noticed it or has any intention of downloading it. Appendix B: running the Flash Player updater manually Once upon a time, running FlashUtil32_<version_Plugin.exe -update plugin would give you a window with an Install button; pressing it would download the installer for the current version (automatically, without opening a browser) and run it, then you'd click thru that installer & be done. It was manual, but it worked! Finding my current installation out of date (see Appendix A), I first tried this manual update process. However... Running FlashUtil32_<version_ActiveX.exe -update activex (in my case, that's FlashUtil32_11_6_602_180_ActiveX.exe -update activex) ...only presents a window with a Download button, clicking that Download button opens my browser to the URL https://get3.adobe.com/flashplayer/update/activex. Running FlashUtil32_<version_Plugin.exe -update plugin (in my case, that's FlashUtil32_11_6_602_180_Plugin.exe -update plugin) ...only presents a window with a Download button, clicking that Download button opens my browser to the URL https://get3.adobe.com/flashplayer/update/plugin. I could continue with the Download page it sent me to, uncheck the foistware box ("Free! McAfee Security Scan Plus"), download that installer (ActiveX, no foistware: install_flashplayer11x32axau_mssd_aih.exe, Plugin, no foistware: install_flashplayer11x32au_mssd_aih.exe) & probably have an updated Flash...but then, what is the point of the Flash Player Update Service if I have to manually download & run another exe? Epilogue I've since come to suspect that the update service is intentionally hobbled to drive early adopters to the manual download page. If this is true, there's probably no solution to this short of writing my own updater; hopefully I am wrong.

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• Problems during an update of cPanel / WHM

  - by haron

  I ordered a Master WHM account with the couple CentOS / cPanel. whm-cpanel.eu.pn The installation is a fresh update of the basic services was necessary (had: WHM 11.15.0 cPanel 11.17.0 WHM X v3.1.0, Apache 1.3.37, PHP 4.4.7, MySQL 4.1.22). 1 / I started to update cPanel / WHM via the command: / scripts / upcp. Everything went well until the middle of installing the server stopped responding (or ping, or ssh). The installation appears to have continued alone to the end and after some time everything is back to normal (I do not know if there was a reboot) and my interface was updated (cPanel 11.24.4-R36167 - WHM 11.24.2 - X 3.9). 2 / Then I updated via the MySQL interface tweak this in WHM then the command: / scripts / mysqlup. Here everything went fine, no problem. 3 / Finally, I wanted to upgrade Apache 2.2 / PHP 5 and I used this command: / scripts / easyapache. After selecting all the packages and modules installation is started but the same as for point 1: the server did not answer more and this time the installation did not go through. Apache 2.2 is well spent (after the second try) but PHP has remained at 4. I tried several times the same operation without success. I do not think this is a memory problem, a free-m shortly before losing communications gave nothing alarming. By cons CPU time seemed to rise up. I reinstalled the machine again the trick, same problem! Whether via the WHM interface or by Shell, the installation stops short, for 15 minutes the machine is not responding and then everything returns to normal, but no update is done in PHP. Is there a known bug in this version of cPanel / WHM? Someone he met the same problem? If I compile Apache / PHP manually, without using the script easyapache is what I might encounter problems with cPanel later? Thank you!

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• Upgrading Ubuntu 9.04 to 9.10 when Update Manager doesn't let you

  - by nickf

  I've been trying to upgrade my installation of Ubuntu 9.04 to 9.10, but all of the instructions I've found haven't been helping. They mostly say to run the update manager and it'll tell you that there's a new distribution ready. Well, mine doesn't say that. Things I've run or checked: update-manager -d says: Your system is up-to-date The package information was last updated less than one hour ago. I've set it to get all new distributions, not just LTS $ cat /etc/update-manager/release-upgrades [DEFAULT] # default prompting behavior, valid options: # never - never prompt for a new distribution version # normal - prompt if a new version of the distribution is available # lts - prompt only if a LTS version of the distribution is available Prompt=normal I'm definitely running 9.04 $ lsb_release -r Distributor ID: Ubuntu Description: Ubuntu 9.04 Release: 9.04 Codename: jaunty Even running the release upgrade from console doesn't help: $ sudo do-release-upgrade Checking for a new ubuntu release No new release found This is running from behind a proxy, but I've set it up such that the regular upgrades and apt-get etc doesn't complain. (export http_proxy=http://myuser:mypass@myserver:8080/) Could you think of anything else which might be stopping me from upgrading?

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• Asus n61Ja notebook bios update

  - by zKs

  I wanted to update the bios, with an official bios update, from version 207 to 211. I didn't use winflash, I used easyflash in the bios. Everything seemed to be going okay; it deleted the old files, wrote the new ones, verified the new ones. Then it said: shutdown in/after 2 seconds and it shut down. Then nothing happened anymore. Power button completely unresponsive. The battery light was still on, and I'm not sure if I should've just waited... I didn't though, I thought I had to remove the battery, take the power off completely to be able to start it up again. So I'm wondering: what are my options here? My warranty expired and I don't really have the money to send it in and pay hundreds of bucks on repairs. Is there anything I can try? CMOS battery reset? Anything??? Please help me out! I would be very grateful :) ps. What was sort of odd btw, was that easyflash said something like that it was an unsigned bios and if I wanted to flash it anymore, if i wanted to 'force' it or something. It was with 100% certainty the correct update from the Asus.com support site, so I didn't take that 'warning' seriously.

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• Disabling Skype automatic update

  - by user13267

  How to stop skype from searching or at least downloading update without consent? I want that annoying "Update skype now" dialog box that keeps popping up before I log in to Skype and after I log in to Skype from appearing at all. Few months ago this used to work: 1) C:\Users\”YourName”\AppData\Local\Temp folder. 2) Find the file called SkypeSetup.exe, and delete it. 3) Create a text file in the folder, rename it to SkypeSetup.exe 4) Right click on the new file you just created and ask for properties. 5) Next left click the security tab then left click the advanced button. 6) Now left click “Change Permissions” and then “Add”. Enter “Everyone” (without the quotes) where it sez’, “Enter the object name to select (examples):” and click “OK”. 7) Now check the “Deny” box for “Full control” and click “OK”. obtained from HERE, but now it seems this has stopped working. The worst part is Skype seems to download ~30MB of executable setup file without my knowledge before bugging me with the dialog box to update it, and there seems to be no direct way to disable this download. And disabling the skype updater service does not seem to work either. Is there any kind of patch or registry hack I can use to stop skype from auto updating? Or should I start looking for an alternative to Skype altogether?

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• freebsd-update failure

  - by ctuffli

  Some time ago, I upgrade my FreeBSD box to 7.1-RC2, but now I'd like to move to 7.2-RELEASE. I tried running # uname -mrsi FreeBSD 7.1-RC2 i386 GENERIC # freebsd-update upgrade -r 7.2-RELEASE Looking up update.FreeBSD.org mirrors... 3 mirrors found. Fetching metadata signature for 7.1-RC2 from update4.FreeBSD.org... failed. Fetching metadata signature for 7.1-RC2 from update5.FreeBSD.org... failed. Fetching metadata signature for 7.1-RC2 from update2.FreeBSD.org... failed. No mirrors remaining, giving up. Substituting 7.1 for 7.2 gives the same error. Adding a --debug option shows the failure as being fetch: http://update4.FreeBSD.org/7.1-RC2/i386/latest.ssl: Not Found Is there any way to still do a binary upgrade of this system as the 7.1-RC* directories don't exist on http://update.freebsd.org anymore? Upgrading from source is an option, but I wanted to see if there was some way to salvage this installation.

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• How to conform to update-rc.d with LSB standard?

  - by user34881

  This is a migrated question from stackoverflow, as I was told, this is the place for it to be. http://stackoverflow.com/questions/2263567/how-to-conform-to-update-rc-d-with-lsb-standard I have set up a simple script to back up some directories. While I haven't had any problems setting up the functionality, I'm stuck with adding the script to rcX.d dir's using update-rc.d. My script: #! /bin/sh ### BEGIN INIT INFO # Provides: backup # Required-Start: backup # Required-Stop: # Should-Stop: # Default-Start: 0 6 # Default-Stop: # Description: Backs up some dirs ### END INIT INFO check_mounted() { # Check if HD is mounted } do_backup() { if check_mounted; then # Some rsync statements. fi } case "$1" in start) do_backup ;; restart|reload|force-reload) echo "Error: argument '$1' not supported" >&2 exit 3 ;; stop|"") # No-op ;; *) echo "Usage: backup [start]" >&2 exit 3 ;; esac : Using update-rc.d backup start 10 0 6 . I get the following warnings and errors: update-rc.d: warning: backup start runlevel arguments (none) do not match LSB Default-Start values (0 6) update-rc.d: warning: backup stop runlevel arguments (0 6.) do not match LSB Default-Stop values (none) update-rc.d: error: start|stop arguments not terminated by "." The syntax I try to use is the following: update-rc.d [-n] <basename> start|stop NN runlvl [runlvl] [...] . Google wasn't that helpful at finding a solution. How can I correctly set up a script and add it via update-rc.d? I'm using Ubuntu 9.10. UPDATE Using update-rc.d backup start 10 0 6 . stop 10 0 . the error disappears. The warnings about default values persists: update-rc.d: warning: backup start runlevel arguments (none) do not match LSB Default-Start values (0 6) update-rc.d: warning: backup stop runlevel arguments (0 6 0 6) do not match LSB Default-Stop values (none) It even is added to the appropiate rcX-dirs but it still does not get executed...

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• How do you update without cutting off users?

  - by Griffin

  I searched around and I was surprised that I couldn't find an answer to this question. My assumption is that you have multiple servers. Normally they both will be doing their specific take (for the rest of this I will assume a simple website). Now lets say server A & B need updates. Do you update server A while server B keeps pushing out the webpage and then when server A is okay you update server B? This seems like it would work in small scale but seems horrible in large scale due to the fact that you'd need twice the power that you normally have. When dealing with a large number of servers do you update small sections at a time? I thought the problem with this would be if server A can't work alongside server B C D E or F any-longer that's not that bad. But when you start updating you slowly lose this small percentage. What is the proper way to deal with updates like this?

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• Automatically update SVN repository on another server

  - by Mikey C

  We have 2 Ubuntu web servers, one of which is our staging server (Staging) and the other is our live server (Live). Staging has our Subversion repository, as well as the latest version of our sites on it. Because the SVN server is running on Staging, I've added post-commit hook scripts so that the staging server automatically has the latest code. Easy. However, I'd like one of the repositories on Live to also stay updated. This is a repository of images, PDFs and suchlike. When a team member commits to this, I'd like it to automatically update on the live servers so it can be used in mailings, content managed pages etc. I'd add something to the post-commit to SSH across and update, but for security, we can only SSH from one server to another as user 'commandLine', whereas the 'www-data' user runs the post-commit. I'd rather not run a cron on Live to update every 5 minutes, but I can't see another way of doing it without altering all our user permissions. Any ideas?

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• Zabbix doesn't update value from file neither with log[] nor with vfs.file.regexp[] item

  - by tymik

  I am using Zabbix 2.2. I have a very specific environment, where I have to generate desired data to file via script, then upload that file to ftp from host and download it to Zabbix server from ftp. After file is downloaded, I check it with log[] and vfs.file.regexp[] items. I use these items as below: log[/path/to/file.txt,"C.*\s([0-9]+\.[0-9])$",Windows-1250,,"all",\1] vfs.file.regexp[/path/to/file.txt,"C.*\s([0-9]+\.[0-9])$",Windows-1250,,,\1] The line I am parsing looks like below: C: 8195Mb 5879Mb 2316Mb 28.2 The value I want to extract is 28.2 at the end of file. The problem I am currently trying to solve is that when I update the file (upload from host to ftp, then download from ftp to Zabbix server), the value does not update. I was trying only log[] at start, but I suspect, that log[] treat the file as real log file and doesn't check the same lines (althought, following the documentation, it should with "all" value), so I added vfs.file.regexp[] item too. The log[] has received a value in past, but it doesn't update. The vfs.file.regexp[] hasn't received any value so far. file.txt has got reuploaded and redownloaded several times and situation doesn't change. It seems that log[] reads only new lines in the file, it doesn't check lines already caught if there are any changes. The zabbix_agentd.log file doesn't report any problem with access to file, nor with regexp construction (it did report "unsupported" for log[] key, when I had something set up wrong). I use debug logging level for agent - I haven't found any interesting info about that problem. I have no idea what I might be doing wrong or what I do not know about how Zabbix is performing these checks. I see 2 solutions for that: adding more lines to the file instead of making new one or making new files and check them with logrt[], but those doesn't satisfy my desires. Any help is greatly appreciated. Of course I will provide additional information, if requested - for now I don't know what else might be useful.

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• Windows Update broke Wirless driver - Can't get it working again

  - by private_meta

  I naively installed a driver update incoming from Windows Updates yesterday. That caused my Wifi on my Notebook (HP ELitebook 2740p) to break. The network is working as I tried it with my other mobile devices. When installing said driver, it told me that the installation failed. I tried to do a system restore, which did not help getting wifi connectivity back. The device said it was working, but did not get any wifi connection and did not discover any networks. What I tried next was to uninstall the device from my Device Manager and install either the current drivers found through windows, then I tried the same with the current drivers on the HP driver page. both of those attempts failed. It always tells me that installation failed when I uninstall and reinstall drivers. If I try to update the broken driver via internet, it tells me it is up to date, and in the device manager it still views as broken. Next, I 'played' around a bit and reinstalled drivers, and I managed to install drivers from 2012, and when trying to update drivers manually and picking drivers that match the device, it lets me choose between drivers from 2010 and 2014. 2014 would be the current one, picking the 2010 driver leads to the driver being accepted. However, no wireless network can be found. I'm pretty much out of ideas by now, short of reinstalling. The only option I can still think of was that the device broke at the exact moment I installed the new windows driver, but I find that a bit unlikely. Any help would be appreciated fixing this issue.

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• Indexed view deadlocking

  - by Dave Ballantyne

  Deadlocks can be a really tricky thing to track down the root cause of.  There are lots of articles on the subject of tracking down deadlocks, but seldom do I find that in a production system that the cause is as straightforward.  That being said,  deadlocks are always caused by process A needs a resource that process B has locked and process B has a resource that process A needs.  There may be a longer chain of processes involved, but that is the basic premise. Here is one such (much simplified) scenario that was at first non-obvious to its cause: The system has two tables,  Products and Stock.  The Products table holds the description and prices of a product whilst Stock records the current stock level. USE tempdb GO CREATE TABLE Product ( ProductID INTEGER IDENTITY PRIMARY KEY, ProductName VARCHAR(255) NOT NULL, Price MONEY NOT NULL ) GO CREATE TABLE Stock ( ProductId INTEGER PRIMARY KEY, StockLevel INTEGER NOT NULL ) GO INSERT INTO Product SELECT TOP(1000) CAST(NEWID() AS VARCHAR(255)), ABS(CAST(CAST(NEWID() AS VARBINARY(255)) AS INTEGER))%100 FROM sys.columns a CROSS JOIN sys.columns b GO INSERT INTO Stock SELECT ProductID,ABS(CAST(CAST(NEWID() AS VARBINARY(255)) AS INTEGER))%100 FROM Product There is a single stored procedure of GetStock: Create Procedure GetStock as SELECT Product.ProductID,Product.ProductName FROM dbo.Product join dbo.Stock on Stock.ProductId = Product.ProductID where Stock.StockLevel <> 0 Analysis of the system showed that this procedure was causing a performance overhead and as reads of this data was many times more than writes,  an indexed view was created to lower the overhead. CREATE VIEW vwActiveStock With schemabinding AS SELECT Product.ProductID,Product.ProductName FROM dbo.Product join dbo.Stock on Stock.ProductId = Product.ProductID where Stock.StockLevel <> 0 go CREATE UNIQUE CLUSTERED INDEX PKvwActiveStock on vwActiveStock(ProductID) This worked perfectly, performance was improved, the team name was cheered to the rafters and beers all round.  Then, after a while, something else happened… The system updating the data changed,  The update pattern of both the Stock update and the Product update used to be: BEGIN TRAN UPDATE... COMMIT BEGIN TRAN UPDATE... COMMIT BEGIN TRAN UPDATE... COMMIT It changed to: BEGIN TRAN UPDATE... UPDATE... UPDATE... COMMIT Nothing that would raise an eyebrow in even the closest of code reviews.  But after this change we saw deadlocks occuring. You can reproduce this by opening two sessions. In session 1 begin transaction Update Product set ProductName ='Test' where ProductID = 998 Then in session 2 begin transaction Update Stock set Stocklevel = 5 where ProductID = 999 Update Stock set Stocklevel = 5 where ProductID = 998 Hop back to session 1 and.. Update Product set ProductName ='Test' where ProductID = 999 Looking at the deadlock graphs we could see the contention was between two processes, one updating stock and the other updating product, but we knew that all the processes do to the tables is update them.  Period.  There are separate processes that handle the update of stock and product and never the twain shall meet, no reason why one should be requiring data from the other.  Then it struck us,  AH the indexed view. Naturally, when you make an update to any table involved in a indexed view, the view has to be updated.  When this happens, the data in all the tables have to be read, so that explains our deadlocks.  The data from stock is read when you update product and vice-versa. The fix, once you understand the problem fully, is pretty simple, the apps did not guarantee the order in which data was updated.  Luckily it was a relatively simple fix to order the updates and deadlocks went away.  Note, that there is still a *slight* risk of a deadlock occurring, if both a stock update and product update occur at *exactly* the same time.

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• Bulk inserting and updating with Entity Framework (Probably a better alternative?)

  - by Dave

  I have a data set of devices, addresses, and companies that I need to import into our database, with the catch that our database may already include a specific device/address/company that is included in the new data set. If that is the case, I need to update that entry with the new information in the data set, excluding addresses. We check if an exact copy of that address exists, otherwise we make a new entry. My issue is that it is very slow to attempt to grab a device/company in EF and if it exist updated it, otherwise insert it. To fix this I tried to get all the companies, devices, and addresses and insert them into respective hashmaps, and check if the identifier of the new data exists in the hashmap. This hasn't led to any performance increases. I've included my code below. Typically I would do a batch insert, I'm not sure what I would do for a batch update though. Can someone advise a different route? var context = ObjectContextHelper.CurrentObjectContext; var oldDevices = context.Devices; var companies = context.Companies; var addresses = context.Addresses; Dictionary<string, Company> companyMap = new Dictionary<string, Company>(StringComparer.OrdinalIgnoreCase); Dictionary<string, Device> deviceMap = new Dictionary<string, Device>(StringComparer.OrdinalIgnoreCase); Dictionary<string, Address> addressMap = new Dictionary<string, Address>(StringComparer.OrdinalIgnoreCase); foreach (Company c in companies) { if (c.CompanyAccountID != null && !companyMap.ContainsKey(c.CompanyAccountID)) companyMap.Add(c.CompanyAccountID, c); } foreach (Device d in oldDevices) { if (d.SerialNumber != null && !deviceMap.ContainsKey(d.SerialNumber)) deviceMap.Add(d.SerialNumber, d); } foreach (Address a in addresses) { string identifier = GetAddressIdentifier(a); if (!addressMap.ContainsKey(identifier)) addressMap.Add(identifier, a); } foreach (DeviceData.TabsDevice device in devices) { // update a device Company tempCompany; Address tempAddress; Device currentDevice; if (deviceMap.ContainsKey(device.SerialNumber)) //update a device deviceMap.TryGetValue(device.SerialNumber, out currentDevice); else // insert a new device currentDevice = new Device(); currentDevice.SerialNumber = device.SerialNumber; currentDevice.SerialNumberTABS = device.SerialNumberTabs; currentDevice.Model = device.Model; if (device.CustomerAccountID != null && device.CustomerAccountID != "") { companyMap.TryGetValue(device.CustomerAccountID, out tempCompany); currentDevice.CustomerID = tempCompany.CompanyID; currentDevice.CustomerName = tempCompany.CompanyName; } if (companyMap.TryGetValue(device.ServicingDealerAccountID, out tempCompany)) currentDevice.CompanyID = tempCompany.CompanyID; currentDevice.StatusID = 1; currentDevice.Retries = 0; currentDevice.ControllerFamilyID = 1; if (currentDevice.EWBFrontPanelMsgOption == null) // set the Panel option to the default if it isn't set already currentDevice.EWBFrontPanelMsgOption = context.EWBFrontPanelMsgOptions.Where( i => i.OptionDescription.Contains("default")).Single(); // link the device to the existing address as long as it is actually an address if (addressMap.TryGetValue(GetAddressIdentifier(device.address), out tempAddress)) { if (GetAddressIdentifier(device.address) != "") currentDevice.Address = tempAddress; else currentDevice.Address = null; } else // insert a new Address and link the device to it (if not null) { if (GetAddressIdentifier(device.address) == "") currentDevice.Address = null; else { tempAddress = new Address(); tempAddress.Address1 = device.address.Address1; tempAddress.Address2 = device.address.Address2; tempAddress.Address3 = device.address.Address3; tempAddress.Address4 = device.address.Address4; tempAddress.City = device.address.City; tempAddress.Country = device.address.Country; tempAddress.PostalCode = device.address.PostalCode; tempAddress.State = device.address.State; addresses.AddObject(tempAddress); addressMap.Add(GetAddressIdentifier(tempAddress), tempAddress); currentDevice.Address = tempAddress; } } if (!deviceMap.ContainsKey(device.SerialNumber)) // if inserting, add to context { oldDevices.AddObject(currentDevice); deviceMap.Add(device.SerialNumber, currentDevice); } } context.SaveChanges();

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• Gitosis post-update wont run

  - by Andy

  Im running cygwin on a windows vista pc. Ive successfully installed sshd, configured, and built gitosis. I can remotely git clone the gitosis-admin.git repository, made a change to the config, committed and pushed back to cygwin machine successfully. However the post-update doesnt execute and the new repository (as specified in the config) have not created. I have run: chmod 755 /home/git/repositories/gitosis-admin.git/hooks/post-update and an ls -l shows the following: -rwxr-xr-x 1 git None 69 2010-04-13 22:55 post-update yet, when I run: ./post-update I receive the following error: ERROR:gitosis.run_hook:Must have GIT_DIR set in enviroment Ive included in my git .bashrc the line: GIT_DIR=$HOME/repositories/gitosis-admin.git/ and if I type Set at the prompt, I can see: GIT_DIR=/home/git/repositories/gitosis-admin.git/ What else can I try, because Im running out of ideas.

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• how to update the unchecked checkbox from checked checkbox into mysql using php

  - by hana

  how to update the unchecked checkbox from checked checkbox into mysql using php

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• Slow Update/insert into SQL Server CE using LinqToDatasets

  - by Vaccano

  I have a mobile app that is using LinqToDatasets to update/insert into a SQL Server CE 3.5 File. My Code looks like this: // All the MyClass Updates MyTableAdapter myTableAdapter = new MyTableAdapter(); foreach (MyClassToInsert myClass in updates.MyClassChanges) { // Update the row if it is already there int result = myTableAdapter.Update(myClass.FirstColumn, myClass.SecondColumn, myClass.FirstColumn); // If the row was not there then insert it. if (result == 0) { myTableAdapter.Insert(myClass.FirstColumn, myClass.SecondColumn); } } This code is used to keep the hand held database in sync with the server database. Problem is if it is a full update (first time for example) there are a lot of updates (about 125). That makes this code (and more loops like it take a very long time (I have three such loops that take over 30 seconds each). Is there a faster or better way to do updates/inserts like this? (I did see this Codeplex Project, but I could not see how to make it work with both updates and inserts.)

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• Prevent Custom Entity being deleted from Entity Framework during Update Model Wizard

  - by rbg

  In Entity Framework v1 If you create a Custom Entity to map it to a Stored Procedure during FunctionImport and then Select "Update Model from Database" the Update Model Wizard removes the Custom Entity (as added Manually in the SSDL XML prior to functionImport) from the SSDL. Does anyone know if this limitation has been dealt with Entity Framework v4? I mean is there a way to prevent the Wizard from removing the Custom Entity from the Storage Schema (SSDL) during Model Update from Database????

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• SharePoint Workflow: how to update the item without triggering the workflow again

  - by Philipp Schmid

  I have a SharePoint workflow which is running whenever the item changes. The workflow communicates with an external REST service. If the service returns a string, I want to update one of the field values with that string. Unfortunately, this update will trigger another instance of the workflow for this item once the current workflow terminates. I end up with an infinite loop! How I can prevent this from happening? SPListItem has Update(), UpdateOverwriteVersion(), and SystemUpdate() methods but none of them seem to prevent subsequent workflows from being triggered. I could inspect the last modified timestamp of the item and terminate the workflow if the last update happened within a certain timespan, but I am looking for a more robust solution.

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