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Articles indexed Thursday March 18 2010

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  • MS SQL Server slows down over time?

    - by Dave Holland
    Have any of you experienced the following, and have you found a solution: A large part of our website's back-end is MS SQL Server 2005. Every week or two weeks the site begins running slower - and I see queries taking longer and longer to complete in SQL. I have a query that I like to use: USE master select text,wait_time,blocking_session_id AS "Block", percent_complete, * from sys.dm_exec_requests CROSS APPLY sys.dm_exec_sql_text(sql_handle) AS s2 order by start_time asc Which is fairly useful... it gives a snapshot of everything that's running right at that moment against your SQL server. What's nice is that even if your CPU is pegged at 100% for some reason and Activity Monitor is refusing to load (I'm sure some of you have been there) this query still returns and you can see what query is killing your DB. When I run this, or Activity Monitor during the times that SQL has begun to slow down I don't see any specific queries causing the issue - they are ALL running slower across the board. If I restart the MS SQL Service then everything is fine, it speeds right up - for a week or two until it happens again. Nothing that I can think of has changed, but this just started a few months ago... Ideas? --Added Please note that when this database slowdown happens it doesn't matter if we are getting 100K page views an hour (busier time of day) or 10K page views an hour (slow time) the queries all take a longer time to complete than normal. The server isn't really under stress - the CPU isn't high, the disk usage doesn't seem to be out of control... it feels like index fragmentation or something of the sort but that doesn't seem to be the case. As far as pasting results of the query I pasted above I really can't do that. The Query above lists the login of the user performing the task, the entire query, etc etc.. and I'd really not like to hand out the names of my databases, tables, columns and the logins online :)... I can tell you that the queries running at that time are normal, standard queries for our site that run all the time, nothing out of the norm.

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  • Web App Server hardware question. Which configuration?

    - by JBeckton
    I am pricing some new servers and I am not sure which configuration to get. The server will be running several web applications for our company. Some of them are ASP.Net sites and some are ColdFusion. The OS will be Win Server 2008 Web or Standard Edition. Do I need 2 processors or will a single quad core handle it? Xeon multi core Hyperthreading or non Hyperthreading? I am going 64bit so I can go higher than 4 Gigs of Ram. I am shopping at Dell and there are so many options, I want to get the most bang for my buck without going over budget and I also don't want the machine to be mostly under utilized.

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  • How to repair multiple KDC an Netlogon errors

    - by Keith Sirmons
    Howdy, I have several erros in the system event log of my single Windows 2003 SP2 domain controller. Multiple member computers on the domain are listed in these errors. I am seeing two similar errors for each computer one second apart in the event log. Event ID 7 Source KDC The Security Account Manager failed a KDC request in an unexpected way. The error is in the data field. The account name was [email protected] and lookup type 0x8. followed by Event ID 7 Source KDC The Security Account Manager failed a KDC request in an unexpected way. The error is in the data field. The account name was MEMBERNAME$ and lookup type 0x8. The Lookup Types are also different, I have 0x8, 0x28, 0x0, 0x20. I am also receiving other authentication errors in the same time frame as all of the KDC errors Event ID 5722 Source NETLOGON The session setup from the computer MEMBERNAME failed to authenticate. The name(s) of the account(s) referenced in the security database is MEMBERNAME$. The following error occurred: Access is denied. I have run dcdiag /v to see if there was something wrong with Active Directory, but all tests passed. I also ran netdiag /v and it appers all of those tests ran. Any ideas on where to start for this issue? Thank you, Keith

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  • DailyRollingFileHandler ---- Files should be rotated on a daily basis

    - by nag
    We have a requirment which requires to have an Handler that is extended from Java logging and allows to have the files rotated on daily basis. Currently Java util logging do have the support of rotation based on file size by using File Handler. It doesnt support rotation on daily basis. http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6350749 Mentioned handler seems is not promising .http://www.x4juli.org/api/org/x4juli/handlers/RollingFileHandler.html So , what we are looking is for such an appender that allows daily rotation . We would like to write such handler and which is the appropriate handler to extend for ... StreamHandler or FileHandler ? And other questions are , is there way we can configure 2 different files for a single handler say FileHandler say for eg , we would like some kind of messages need to be captured in one file and other messages in other file. Would appreciate for any comments.

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  • Logging and Error handling in asp.net

    - by parminder
    Hi Experts, I have a website running now. I have to implement some logging routines as well as some handler for unhandeled exceptions. I was looking at ELMAH also which seems good to me. I need something very light and easy to use. Can someone recommend any other option I can choose from. Thanks Parminder

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  • LINQ query to navigate an object hierachy

    - by TesterTurnedDeveloper
    Let's say I have an object graph of Countries / States / Cities, like below: public class City { public string Name { get; set; } } public class State { public List<City> Cities { get; set; } } public class Country { public List<State> States { get; set; } } Is there a simple way to query a List<Country> to get all the cities?

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  • Flex custom list selection not highlighting

    - by aip.cd.aish
    I want to create a custom list in Flex for an interface prototype. The list is supposed to have an image and 3 text fields. This is what I have done so far, the control displayed is what I want. But, when I click on one of the items, the item does not appear (visually) to be selected. I was not sure how I would implement this. Here is my code so far: <s:List width="400" height="220" dataProvider="{arrColl}" alternatingItemColors="[#EEEEEE, white]"> <s:itemRenderer> <fx:Component> <mx:Canvas height="100"> <mx:Image height="90" width="120" source="{data.imageSource}"></mx:Image> <mx:Label left="125" y="10" text="{data.title}" /> <mx:Label left="125" y="30" text="{data.type}" /> <mx:Label left="125" y="50" text="{data.description}" /> </mx:Canvas> </fx:Component> </s:itemRenderer> </s:List>

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  • Which web application framework?

    - by Fergal
    From the following list of frameworks, which one would you use to develop a rich web application and why would you choose it over the others? Sproutcore GWT ExtJS GXT SmartGWT Dojo / Dijit Flex Capuccino Grails

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  • PHP and Regular Expressions question?

    - by php
    I was wondering if the codes below are the correct way to check for a street address, email address, password, city and url using preg_match using regular expressions? And if not how should I fix the preg_match code? preg_match ('/^[A-Z0-9 \'.-]{1,255}$/i', $trimmed['address']) //street address preg_match ('/^[\w.-]+@[\w.-]+\.[A-Za-z]{2,6}$/', $trimmed['email'] //email address preg_match ('/^\w{4,20}$/', $trimmed['password']) //password preg_match ('/^[A-Z \'.-]{1,255}$/i', $trimmed['city']) //city preg_match("/^[a-zA-Z]+[:\/\/]+[A-Za-z0-9\-_]+\\.+[A-Za-z0-9\.\/%&=\?\-_]+$/i", $trimmed['url']) //url

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  • [NSLocale currentLocale] always returns "en_US" not user's current language

    - by Prairiedogg
    I'm in the processes of internationalizing an iPhone app - I need to make programmatic changes to certain views based on what the user's current locale is. I'm going nuts because no matter what the language preference on the iPhone simulator or actual hardware are, locale always evaluates to "en_US": NSString *locale = [[NSLocale currentLocale] localeIdentifier]; NSLog(@"current locale: %@", locale); The crazy thing is that the rest of the application behaves as expected. The correct strings are selected from the Localization.strings file and used in the interface, and the correct .xib files for the selected locale are used. I have also tried the following, to no avail and with the same result: NSString *locale = [[NSLocale autoupdatingCurrentLocale] localeIdentifier]; NSLog(@"current locale: %@", locale); Is there something simple I'm missing? A preference or an import perhaps? Update: As Darren's answer suggests, the preference I'm looking for is not in NSLocale, rather it is here: NSUserDefaults* defs = [NSUserDefaults standardUserDefaults]; NSArray* languages = [defs objectForKey:@"AppleLanguages"]; NSString* preferredLang = [languages objectAtIndex:0]; NSLog(@"preferredLang: %@", preferredLang);

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  • DateChooser is behaving strangely

    - by Tam
    I'm writing a Flex application and I came across what I think is a weird problem. I want to create a text box and a DateChooser as the datefield didn't do what I wanted and it's Halo so I can't skin it easily. I want the DateChooser to show when I click on the text input. Here is an except from my code: <s:TextInput id="wholeDate" width="100" mouseOver="stopChangeToNormal();" paddingRight="10" click="date1.visible = true" focusOut="date1.visible = false"/> <s:Button label="Go" width="70" /> </s:Panel> <mx:DateChooser id="date1" visible = "false" change="useDate(event);" mouseOver="changeToNormalState = false;" y="{wholeDate.y + buttonsGroup.y + 20}" x="{wholeDate.x + buttonsGroup.x - 175 }" /> The weird thing is that it works as I wanted if I make it visible = "true" to start but if I have it visible="false" it doesn't work! It shows but the date I select doesn't show in the box as it does if I have it as visible="true", but I don't want it to be visible initially. Any ideas?

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  • DESPERATE Request - jQuery tag suggestion, How is it inserting the DOM Element SPAN?

    - by nobosh
    Take a look at this snazy plugin: http://remysharp.com/2007/12/28/jquery-tag-suggestion/ ** it's real small Source: http://remysharp.com/downloads/tag.js For the life of me, I can't figure out where in the plugin JS the code is injecting the SPAN which contains the tags... I see the following around line 73: var tagMatches = document.createElement(settings.tagContainer); But where is it injecting it into the doc? I ask because I need to find a way to control where it goes based on an ID, something like this: document.body.insertBefore(newDiv, my_div); Thanks so much, and good luck, It's tricky!

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  • property names are different from original Object in the silverlight

    - by kwon
    Following is part of service layer which is provided by WCF service : [Serializable] public class WaitInfo { private string roomName; private string pName; private string tagNo; public string RoomName { get { return roomName; } set { this.roomName = value; } } public string PName { get { return pName; } set { this.pName = value; } } public string TagNo { get { return tagNo; } set { this.tagNo = value; } } } public class Service1 : IService1 { public List<WaitInfo> GetWaitingList() { MyDBDataContext db = new MyDBDataContext(); var query = from w in db.WAIT_INFOs select new WaitInfo { TagNo = w.PATIENT_INFO.TAG_NO, RoomName= w.ROOM_INFO.ROOM_NAME, PName= w.PATIENT_INFO.P_NAME }; List<WaitInfo> result = query.ToList(); return result; } And following is codebehind part of UI layer which is provided by Silverlight public MainPage() { InitializeComponent(); Service1Client s = new Service1Client(); s.GetWaitingListCompleted += new EventHandler<GetWaitingListByCompletedEventArgs>( s_GetWaitingListCompleted); s.GetWaitingListAsync(); } void s_GetWaitingListCompleted(object sender, RadControlsSilverlightApplication1.ServiceReference2.GetWaitingListByCompletedEventArgs e) { GridDataGrid.ItemsSource = e.Result; } And following is xaml code in Silverlight page <Grid x:Name="LayoutRoot"> <data:DataGrid x:Name="GridDataGrid"></data:DataGrid> </Grid> Is is very simple code, however what I am thinking weird is property name of object at "e.Result" in the code behind page. In the service layer, although properties' names are surely "RoomName, PName, TagNo", in the silverlight properties' names are "roomName, pName, tagNo" which are private variable name of the WaitingList Object. Did I something wrong? Thanks in advance.

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  • curl POST to RESTful services

    - by Sashikiran Challa
    Hello All, There are a lot of questions on Stackoverflow about curl but I could not figure out what is that I am doing what I am not supposed to. I am trying to call a RESTful service that I had written using Jersey API and am trying to POST an xml string to it and I get HTTP 415 error which is supposed to be a Media Type error. Here in my shell script call to 1st service: abc=curl http://gf...:8080/InChItoD/inchi/3dstructure?InChIstring=$inchi echo $abc (this works fine the output that it returns is given below.) Posting this xml string to second service def= curl -d $abc -H "Content-Type:text/xml" http://gf...:8080/XML2G/xml3d/gssinput I get the following error: ... ... HTTP Status 415 Status report message description.The server refused this request because the request entity is in a format not supported by the requested resource for the requested method ().Apache Tomcat/6.0.26 This is a sample of xml string I am trying to POST <?xml version="1.0"?><molecule xmlns="http://www.xml-cml.org/schema"> <atomArray> <atom id="a1" elementType="N" formalCharge="1" x3="0.997963" y3="-0.002882" z3="-0.004222"/> <atom id="a2" elementType="H" x3="2.024650" y3="-0.002674" z3="0.004172"/> <atom id="a3" elementType="H" x3="0.655444" y3="0.964985" z3="0.004172"/> <atom id="a4" elementType="H" x3="0.649003" y3="-0.496650" z3="0.825505"/> <atom id="a5" elementType="H" x3="0.662767" y3="-0.477173" z3="-0.850949"/> </atomArray> <bondArray> <bond atomRefs2="a1 a2" order="1"/> <bond atomRefs2="a1 a3" order="1"/> <bond atomRefs2="a1 a4" order="1"/> <bond atomRefs2="a1 a5" order="1"/> </bondArray></molecule> Thanks in advance

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  • Changing Name Associated With Past Commits In Mercurial

    - by Sean M
    A friend recently had the occasion for a legal name change, which made me wonder about how to cope with that in a development environment, especially in regards to source control. Their legal name changed, so naturally their login name and associated identity stuff changed. If they were a team member of mine, I'd like to change the record of their past commits to the project to be consistent with their new name. Is that possible in Mercurial? In other version control systems?

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  • What do you expect of an 'Experienced Developer'?

    - by ritu
    I have been programming for about 10 years: 7 years C++, 3 years MFC, 2 JSP/Servlets, and the last year .NET (since there was some overlap the total won't add up). The problem is now that I am looking for a new job, I don't know what the latest thing is in C++ AND Java AND .NET AND MFC and somehow at interviews I am expected to KNOW everything about these topics because I have them listed on my resume. Any suggestions?

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  • The fastest way to iterate through a collection of objects

    - by Trev
    Hello all, First to give you some background: I have some research code which performs a Monte Carlo simulation, essential what happens is I iterate through a collection of objects, compute a number of vectors from their surface then for each vector I iterate through the collection of objects again to see if the vector hits another object (similar to ray tracing). The pseudo code would look something like this for each object { for a number of vectors { do some computations for each object { check if vector intersects } } } As the number of objects can be quite large and the amount of rays is even larger I thought it would be wise to optimise how I iterate through the collection of objects. I created some test code which tests arrays, lists and vectors and for my first test cases found that vectors iterators were around twice as fast as arrays however when I implemented a vector in my code in was somewhat slower than the array I was using before. So I went back to the test code and increased the complexity of the object function each loop was calling (a dummy function equivalent to 'check if vector intersects') and I found that when the complexity of the function increases the execution time gap between arrays and vectors reduces until eventually the array was quicker. Does anyone know why this occurs? It seems strange that execution time inside the loop should effect the outer loop run time.

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  • SDK for writing DVD's

    - by Matt Warren
    I need to add DVD writing functionality to an application I'm working on. However it needs to be able to write out files that are being grabbed "live" from a camera, over a long period of time. I can't wait until all the files are captured before I start writing them to the DVD, I need to write them out in chunks as I go along. I've looked at IMAPI v2, but the main problems seems to be that you need to point it to all the files you plan to write out to disk before you start the burning process. I know it has to concept of "sessions", which means you can write to the DVD in several parts, before you finally "close" it. But I was wondering if there were any other DVD writing SDK's that allow you to be constantly writing files to a DVD and in particular files that are only in memory. It would be more efficient if I didn't have to write the captured images out to hard before they are burned to DVD. The solution needs to work under .NET on Windows XP and vista

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  • Foreign key onto weak entity set in MS SQL Server 2008?

    - by Nic Waller
    I'm using Microsoft SQL Server 2008 Management Studio to create a relational schema by following an Entity-Relationship diagram. (included below; unrelated details removed) Until now, primary and foreign keys have been working as expected. But when I try to create a foreign key from the entity relationship takes onto the weak entity set section, I get an error. Section is identified by a composite primary key in the context of course, which has course_id as a primary key. Therefore, the primary key of section is a 4-way composite key. The entity relationship takes needs to refer to section, so it includes all 4 primary attributes from section in it's own primary key. When trying to establish a foreign key relationship from takes to section, Studio gives the following error: The columns in table 'section' do not match an existing primary key or UNIQUE constraint. Am I doing something wrong, or is this an unsupported configuration? I can provide more details or the SQL schema if necessary.

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