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• IIS7 folder permissions

  - by Eanna

  I build a basic WCF service that I now want to host in IIS7 under Windows Server 2008 R2. I added the service as an application under the default web site but whenever i try to run the application I get the following error: HTTP Error 500.19 - Internal Server Error The requested page cannot be accessed because the related configuration data for the page is invalid. Config Error - Cannot read configuration file due to insufficient permissions The only way I can get this service working is if i choose to "connect as" the server Administrator when adding the service. the "application user (pass-through authentication)" option does not seem to work. Could anyone help me out, I've just started using IIS7 and have no idea what to do... Thanks

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• IIS get full error message for failed requests

  - by BetaRide

  I have IIS set-up and serving my webservice. Unfortunately if the webservice throws an exception, all I get is a blue box with the title failed request. What options do I have to actually see what went wrong? I'd prefer to get the exception message and a stack trace. I already set-up "Failed Request Tracing" but the directory remains empty. If possible I'd prefer to get the stack trace in the browser directly. Just if this matters: I have an IIS 7.5 on a Win 7 64 Pro box. The Webservice is a WCF C# project.

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• Help deciphering exception details from WebRequestCreator when setting ContentType to "application/json"

  - by Stephen Patten

  Hello, This one is real simple, run this Silverlight4 example with the ContentType property commented out and you'll get back a response from from my service in xml. Now uncomment the property and run it and you'll get an exception similar to this one. System.Net.ProtocolViolationException occurred Message=A request with this method cannot have a request body. StackTrace: at System.Net.Browser.AsyncHelper.BeginOnUI(SendOrPostCallback beginMethod, Object state) at System.Net.Browser.ClientHttpWebRequest.EndGetResponse(IAsyncResult asyncResult) at com.patten.silverlight.ViewModels.WebRequestLiteViewModel.<MakeCall>b__0(IAsyncResult cb) InnerException: What I am trying to accomplish is just pulling down some JSON formatted data from my wcf endpoint. Can this really be this hard, or is it another classic example of just overlooking something simple. Edit: While perusing SO, I noticed similar posts, like this one Why am I getting ProtocolViolationException when trying to use HttpWebRequest? Thank you, Stephen try { Address = "http://stephenpattenconsulting.com/Services/GetFoodDescriptionsLookup(2100)"; // Get the URI Uri httpSite = new Uri(Address); // Create the request object using the Browsers networking stack // HttpWebRequest wreq = (HttpWebRequest)WebRequest.Create(httpSite); // Create the request using the operating system's networking stack HttpWebRequest wreq = (HttpWebRequest)WebRequestCreator.ClientHttp.Create(httpSite); // http://stackoverflow.com/questions/239725/c-webrequest-class-and-headers // These headers have been set, so use the property that has been exposed to change them // wreq.Headers[HttpRequestHeader.ContentType] = "application/json"; //wreq.ContentType = "application/json"; // Issue the async request. // http://timheuer.com/blog/archive/2010/04/23/silverlight-authorization-header-access.aspx wreq.BeginGetResponse((cb) => { HttpWebRequest rq = cb.AsyncState as HttpWebRequest; HttpWebResponse resp = rq.EndGetResponse(cb) as HttpWebResponse; StreamReader rdr = new StreamReader(resp.GetResponseStream()); string result = rdr.ReadToEnd(); Jounce.Framework.JounceHelper.ExecuteOnUI(() => { Result = result; }); rdr.Close(); }, wreq); } catch (WebException ex) { Jounce.Framework.JounceHelper.ExecuteOnUI(() => { Error = ex.Message; }); } catch (Exception ex) { Jounce.Framework.JounceHelper.ExecuteOnUI(() => { Error = ex.Message; }); } EDIT: This is how the WCF 4 end point is configured, primarily 'adapted' from this link http://geekswithblogs.net/michelotti/archive/2010/08/21/restful-wcf-services-with-no-svc-file-and-no-config.aspx [ServiceContract] public interface IRDA { [OperationContract] IList<FoodDescriptionLookup> GetFoodDescriptionsLookup(String id); [OperationContract] FOOD_DES GetFoodDescription(String id); [OperationContract] FOOD_DES InsertFoodDescription(FOOD_DES foodDescription); [OperationContract] FOOD_DES UpdateFoodDescription(String id, FOOD_DES foodDescription); [OperationContract] void DeleteFoodDescription(String id); } // RESTfull service [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)] public class RDAService : IRDA { [WebGet(UriTemplate = "FoodDescription({id})")] public FOOD_DES GetFoodDescription(String id) { ... } [AspNetCacheProfile("GetFoodDescriptionsLookup")] [WebGet(UriTemplate = "GetFoodDescriptionsLookup({id})")] public IList<FoodDescriptionLookup> GetFoodDescriptionsLookup(String id) { return rda.GetFoodDescriptionsLookup(id); ; } [WebInvoke(UriTemplate = "FoodDescription", Method = "POST")] public FOOD_DES InsertFoodDescription(FOOD_DES foodDescription) { ... } [WebInvoke(UriTemplate = "FoodDescription({id})", Method = "PUT")] public FOOD_DES UpdateFoodDescription(String id, FOOD_DES foodDescription) { ... } [WebInvoke(UriTemplate = "FoodDescription({id})", Method = "DELETE")] public void DeleteFoodDescription(String id) { ... } } And the portion of my web.config that pertains to WCF <system.serviceModel> <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" /> <standardEndpoints> <webHttpEndpoint> <standardEndpoint name="" helpEnabled="true" automaticFormatSelectionEnabled="true" /> </webHttpEndpoint> </standardEndpoints> </system.serviceModel>

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• Windows 2003 print services for unix causing CUPS "lpd_command returning 1"

  - by Stephen P. Schaefer

  We have several Windows 2003 servers with print services for Unix on them, and which allow Linux machines running CUPS to use printers defined to CUPS with the URI lpd://printer_server/printer_queue_name - they work. An attempt to provide different printers on a different Windows 2003 server with print services for Unix newly enabled causes CUPS to behave like this: a newly defined printer will be in state "Idle". An attempt to print causes CUPS to change the printer state to "Disabled". In /var/log/cups/error_log, the relevant messages appear to be D [01/Dec/2012:06:14:18 -0800] [Job 16] lpd_command 02 hp775cm_ps D [01/Dec/2012:06:14:18 -0800] [Job 16] Sending command string (16 bytes)... D [01/Dec/2012:06:14:18 -0800] [Job 16] Reading command status... D [01/Dec/2012:06:14:18 -0800] [Job 16] lpd_command returning 1 E [01/Dec/2012:06:14:18 -0800] PID 18786 stopped with status 1! Since my Linux boxes can print to other printers via other Windows 2003 print spoolers, I'm wondering what obscure Windows component could be causing this. I don't think it is Windows firewall, since nmap sees the lpd port (515) open on the server. telnet to the server at port 515 declares Connected to server.internal.example.com (10.22.33.44). Escape character is '^]' Connection closed by foreign host. Windows clients successfully print to the CIFS/SMB share of the hp755cm_ps printer. What other reasons are there for Windows to refuse an lpd request?

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• Axis/SOAP service styles and interoperability

  - by Thilo

  There are four "styles" of service in Axis. RPC services use the SOAP RPC conventions, and also the SOAP "section 5" encoding. Document services do not use any encoding (so in particular, you won't see multiref object serialization or SOAP-style arrays on the wire) but DO still do XML<-Java databinding. Wrapped services are just like document services, except that rather than binding the entire SOAP body into one big structure, they "unwrap" it into individual parameters. Message services receive and return arbitrary XML in the SOAP Envelope without any type mapping / data binding. If you want to work with the raw XML of the incoming and outgoing SOAP Envelopes, write a message service. So, if I use anything else except the first option(SOAP RPC Section 5), how does this impact interoperability? If someone says they want a SOAP service (including WSDL), does this mean that SOAP RPC conventions are expected? Can the other three styles still be used when the other end is not implemented with Axis?

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• Neon toolkit and Gate Web Service

  - by blueomega

  I am trying to run any of the services from gate web service, in neon 2.3. Even Annie that runs so well in gate doesn't run, or better, it stay for indefinite time processing, a thing that should take no more than a couple of seconds. I run wizard, set input directory, leave file pattern as default and set a folder and name for the output ontology, shouldn't it be enough? Shouldn't i get something, even an error? I think its the location who's giving me problems. http://safekeeper1.dcs.shef.ac.uk/neon/services/sardine http://safekeeper1.dcs.shef.ac.uk/neon/services/sprat http://safekeeper1.dcs.shef.ac.uk/neon/services/annie http://safekeeper1.dcs.shef.ac.uk/neon/services/termraider How can i confirm it? Can i run it offline? Can anyone give me a hand? Also, i've seen sprat running on gate, on "SPRAT: a tool for automatic semantic pattern-based ontology population" Can anyone teach me how, and with what versions? Thx, Celso Costa

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• Should windows services be created with custom users, or should I use one of LocalSystem/LocalServic

  - by Justin Dearing

  I'm asking the question in general for the average custom developed NT service or unix OSS daemon ported to windows with SCM support. However, at the moment my immediate concern is for mongodb. From my experience with UNIX I like all my services to run as different unprivileged users. The way this has translated to windows is as follows: Create a local (or domain if it has to talk to SQL server) windows user with a long random password (lately an ASCII85 encoded guid generated from a different machine). Set it to next expire and forbid it from changing its password. Remove that user from the "Users Group". Grant that user "Login as a Service" permission. Give it read permission to the folder where the app resides, and write permission to the logs and data files the applications use. Assign the user to the service. Troubleshoot until the service starts. My feeling is that the unprivileged users are less powerful than the 3 special service users. I also feel that by isolating which users run which services, I would limit collateral damage if a way to compromise one service was found.

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• Balancing internal services using a Cisco CSS 11501

  - by Ladadadada

  First, the background to the problem: I have a Cisco CSS11501 that I am using to load balance a few web servers. These web servers have two network interfaces, one internal and one external and we are sending the requests to the internal interface. We have the CSS configured to do NAT because our webservers need to see the client's IP address. Because the TCP packets hit the webservers with a source address on the Internet, the webserver tries to send the packet back to the client over the external interface and not through the load balancer. In order to stop these requests being sent back out to the Internet via the external interface, we added a routing rule on these boxes so that all traffic with a source address on the internet will use the load balancer as the gateway. This part works fine. What I would also like to to is use the CSS as a load balancer for internal services such as our MySQL slaves. When I do this, I run into a similar problem; the TCP connection goes from the web server to the load balancer and then from the load balancer to the MySQL slave but the CSS spoofs a source address of the original webserver. The MySQL slave then tries to send the response directly to the webserver via the internal network and not via the load balancer. The ideal solution would be to tell the CSS not to do source address spoofing on the internal network and only do it for requests originating on the Internet. Is this possible ? Failing that, is there a way of directing the load balanced traffic back through the load balancer while keeping the other traffic (say SSH) purely on the internal network ? Is there another way of using the CSS11501 to load balance internal services ?

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• Potential for SQL injection here?

  - by Matt Greer

  This may be a really dumb question but I figure why not... I am using RIA Services with Entity Framework as the back end. I have some places in my app where I accept user input and directly ask RIA Services (and in turn EF and in turn my database) questions using their data. Do any of these layers help prevent security issues or should I scrub my data myself? For example, whenever a new user registers with the app, I call this method: [Query] public IEnumerable<EmailVerificationResult> VerifyUserWithEmailToken(string token) { using (UserService userService = new UserService()) { // token came straight from the user, am I in trouble here passing it directly into // my DomainService, should I verify the data here (or in UserService)? User user = userService.GetUserByEmailVerificationToken(token); ... } } (and whether I should be rolling my own user verification system is another issue altogether, we are in the process of adopting MS's membership framework. I'm more interested in sql injection and RIA services in general)

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• Why Is Volume Shadow Copy Services stopping?

  - by David Mackintosh

  I am running Windows 7 Professional, 64-bit. I am running a backup-over-the-internet software client which depends on the Volume Shadow Copy Services running. Since I installed Service Pack 1 (or rather, didn't object when Windows Update forced Service Pack 1 on me) the backup service is failing to back everything up because VSC isn't running. Most of the time it fails to back up such noise as the Security Essentials database or the Messenger Live contact list -- stuff I really don't care about -- but I don't want to fall into the trap of accepting an Error-state backup as "normal". At the recommendation of the backup software, I have set the VSC service startup mode to be Automatic. When I look in the Event Log, System channel I can see at boot time: The Volume Shadow Copy service entered the running state. ...and then two or three minutes later: The Volume Shadow Copy service entered the stopped state. How do I figure out why VSC is stopping? At the suggestion of the backup vendor, I have already followed the suggestions from http://support.microsoft.com/default.aspx/kb/940184 net stop SENS net stop EventSystem net start EventSystem net start SENS net stop COMSysApp net stop SwPrv net stop VSS cd /d C:\Windows\system32 regsvr32 ole32.dll /s regsvr32 oleaut32.dll /s regsvr32 vss_ps.dll /s vssvc /register /s regsvr32 /i swprv.dll /s regsvr32 /i eventcls.dll /s regsvr32 es.dll /s regsvr32 stdprov.dll /s regsvr32 vssui.dll /s regsvr32 msxml.dll /s regsvr32 msxml3.dll /s regsvr32 msxml4.dll /s net start SwPrv net start VSS net start ProtectedStorage ...and per http://support.microsoft.com/kb/940184 I have deleted the key tree HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\EventSystem\{26c409cc-ae86-11d1-b616-00805fc79216}\Subscriptions I have also run chkdsk /F and chkdsk /R on both permanent hard disks. (I had a similar problem with another computer (same OS, same failure, same start point after SP1 install) but the problem went away when I forced Volume Shadow Copy Services to Automatic startup rather than Manual. I did not have to resort to following the Microsoft KB instructions.)

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• Multiple WCF windows services on the same box - endpoint configuration

  - by David Belanger

  Hi, I have 2 windows services installed on a machine with different service names, they install and start fine. What's happening is that they're both listening to the same endpoints and thus competing for messages. I've tried to change the baseAddress to be different for both services without success. Here's my service host config: <configuration> <appSettings> <add key="ServiceName" value="Service - Service Host 1"/> </appSettings> <system.serviceModel> <bindings> <wsHttpBinding> <binding name="NoSecurityBinding"> <security mode="None"> <message establishSecurityContext="false"/> <transport clientCredentialType="None"/> </security> </binding> </wsHttpBinding> <basicHttpBinding> <binding name="NoSecurityBinding"> <security mode="None"> <transport clientCredentialType="None"/> </security> </binding> </basicHttpBinding> </bindings> <services> <service name="Lib.Interface.Service" behaviorConfiguration="Lib.Interface.ServiceBehavior"> <host> <baseAddresses> <add baseAddress="http://localhost:8000/Service"/> </baseAddresses> </host> <endpoint address="" binding="basicHttpBinding" bindingConfiguration="NoSecurityBinding" contract="Lib.Interface.IService"/> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/> </service> </services> <behaviors> <serviceBehaviors> <behavior name="Lib.Interface.ServiceBehavior"> <serviceMetadata httpGetEnabled="True" policyVersion="Policy12"/> <serviceDebug includeExceptionDetailInFaults="False"/> </behavior> </serviceBehaviors> </behaviors> Any idea how I could set up the services (other than unique service names) so they're not conflicting with one another? Thanks.

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• Virtual Machine Network Services causes networking problems in Vista Enterprise 64 bit install

  - by Bill

  I have a Quad-core/8GB Vista Enterprise 64-bit (SP2) installation on which I installed Virtual PC 2007. I have a problem that is opposite of all that I found searching around the Internet--everybody has problems making network connections from their guest VM. When Virtual Machine Network Services is enabled in the protocol stack for my network card across a reboot, it causes access problems to the network. The amount of time to login in using a domain credentialed account is upwards of 3 minutes, then after reaching the desktop the network and sharing center shows that my connection to the domain is unauthenticated. Disabling and re-enabling the Virtual Machine Network Services (uncheck in network properties/apply/recheck/apply) fixes the problem. And as long as I have the VMNS disabled when I shutdown the restart runs smoothly. I just have to remember to enable after login and disable before shutdown. I have un-installed and re-installed Virtual PC 2007 multiple times with restarts between. The install consists of the SP1 + a KB patch for guest resolution fix. Any help would be greatly appreciated. Some additional information... At one point during my hairpulling and teethgnashing with this, I tried to ping my primary DC and observed some weird responses: (Our DC is 10.10.10.25, my dynamic IP was 10.10.10.203) Reply from 10.10.10.203, Destination host unreachable. Request timed out. Reply from 10.10.10.25: ... This is not consistently repeatable, but thought it might strike a chord with someone.

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• Licensing SQL Server 2012 Reporting Services w/ SharePoint 2010

  - by Evan M.

  Here's my situation: I have 1 VM that is running SharePoint 2010 SP1. I have a different physical server that is running SQL Server 2008 R2 that hosts all the configuration and content database for SharePoint. Now, we want to start providing BI capabilities to our users with SharePoint and SQL Server. With it's new features, 2012 is the obvious way to go. To support this, I'm looking to build a new VM that will have SQL Server 2012 installed w/ Analysis services and SSIS, which will be the platform that gets our data from our Oracle databases, puts it in a warehouse hosted by the SQL 2012 instance, and is put into cubes. What's getting me about the platform is licensing for Reporting Services and PowerPivot. My plan was to install SSRS and PowerPivot on the current SharePoint server. But my understanding of the licensing means that instead of the new SQL server being licensed, I'd have to license both new server, and the SharePoint server. Conversely, I could install SharePoint onto the SQL server, and only have to get a second SP license, but then I'd have the added complexity of deploying a separated application server, and combines my data and application servers. Is my licensing understanding correct, or can I have SSRS and PowerPivot installed separately without incurring additional licensing costs?

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• Connecting a PHP front-end to a back-end java service

  - by christopher-mccann

  I am currently using various back-end services and I want to use PHP to simply query these services and perform the final page construction. These services could be coded in any number of programming langauges such as Erlang, Java, Python etc. However I am unsure of the best way to actually interface the back-end services with the web app. Requests to these services would be both synchronous and asynchronous. Would I use something like SOAP or JSON-RPC?? Any help greatly appreciated.

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• What is the difference between remote procedure call and web service

  - by xiao

  Is there any clear definition about RPC and Web Service? A quick wikipedia search shows: RPC: Remote procedure call (RPC) is an Inter-process communication technology that allows a computer program to cause a subroutine or procedure to execute in another address space (commonly on another computer on a shared network) without the programmer explicitly coding the details for this remote interaction. Web Service: Web services are typically application programming interfaces (API) or web APIs that are accessed via Hypertext Transfer Protocol and executed on a remote system hosting the requested services. Web services tend to fall into one of two camps: Big Web Services[1] and RESTful Web Services. I am not quite clear what the real difference between the two things. It seems that one thing could belongs to RPC and is kind of web service at the same time. Is Web Service a higher level representation of RPC?

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• SQL Server 2008 services error on account

  - by TheDude

  I installed SQL Server Enterprise, but can't get it to work. It is a stand alone, on a laptop for development purposes. No network is involved, no other users. The OS is windows 7. Now, I keep receiving eventId 7000, which means that access is denied for the user (the user was Network Services). So, after reading up on it, I kind of got the idea that a user account should be created with minimal privileges. So, off I went and added a user, SQLservices. In the SQL Server Configuration Manager I right clicked SQL Server(MSSQLSERVER), and in the properties I added my new user. Well, here's mister eventId 7000 again. I don't get what I am doing wrong. Also, this new user ends up on my start-up screen. I don't think I want that... I mean, it would be weird to have x number of users crowding up my start-up screen just because I created those for my windows services... The error I get when I add the user in SQL Server Configuration Manager is as follows: Permission Denied. [0x80070005] Helps!

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• MDX Studio download #mdx #ssas

  - by Marco Russo (SQLBI)

  Short version: the latest available version of MDX Studio can be downloaded from http://www.sqlbi.com/tools/mdx-studio/ Long version: Last week Stacia Misner twitted that the online version of MDX Studio was no longer available. It was hosted on http://mdx.mosha.com. It was a sad news, and it is also not good that nobody is maintaining the desktop version of MDX Studio. The latest release is the 0.4.14 and as I am writing it is still available on a SkyDrive link provided by Mosha Pasumansky, who wrote MDX Studio. Mosha does not work in Microsoft now and the entire BI community hopes that somebody will continue its work on this product. Unfortunately, it cannot be published on CodePlex because of some IP restrictions. Only bad news? Well, I hope no. The first good news is that MDX Studio also works with Analysis Services 2012 in Multidimensional mode. The second news is that, after having checked that we can do that, we created a web page on SQLBI web site to download the latest available release of MDX Studio. I hope it will be necessary to update it in the future, by now it is just a way to simplify the finding and download of this precious tool, and to grant that it will not disappear in case the current SkyDrive using to host the download would be discontinued, like it happened to the MDX Studio online version. Now a question to the BI Community: I know that there was some content available regarding tutorial on MDX Studio. I’d like to gather it and to put all in a single place. If you have such content, please contact me directly writing to marco (dot) russo (at) sqlbi [dot] com. Thanks!

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• Meet SQLBI at PASS Summit 2012 #sqlpass

  - by Marco Russo (SQLBI)

  Next week I and Alberto Ferrari will be in Seattle at PASS Summit 2012. You can meet us at our sessions, at a book signing and hopefully watching some other session during the conference. Here are our appointments: Thursday, November 08, 2012, 10:15 AM - 11:45 AM – Alberto Ferrari – Room 606-607 Querying and Optimizing DAX (BIA-321-S) Do you want to learn how to write DAX queries and how to optimize them? Don’t miss this session! Thursday, November 08, 2012, 12:00 PM - 12:30 PM – Bookstore Book signing event at the Bookstore corner with Alberto Ferrari, Marco Russo and Chris Webb Visit the bookstore and sign your copy of our Microsoft SQL Server 2012 Analysis Services: The BISM Tabular Model book. Thursday, November 08, 2012, 1:30 PM - 2:45 PM – Marco Russo – Room 611 Near Real-Time Analytics with xVelocity (without DirectQuery) (BIA-312) What’s the latency you can tolerate for your data? Discover what is the limit in Tabular without using DirectQuery and learn how to optimize your data model and your queries for a near real-time analytical system. Not a trivial task, but more affordable than you might think. Friday, November 09, 2012, 9:45 AM - 11:00 AM Parent-Child Hierarchies in Tabular (BIA-301) Multidimensional has a more advanced support for hierarchies than Tabular, but in reality you can do almost the same things by using data modeling, DAX functions and BIDS Helper!  Friday, November 09, 2012, 1:00 PM - 2:15 PM – Marco Russo – Room 612 Inside DAX Query Plans (BIA-403) Discover the query plan for your DAX query and learn how to read it and how to optimize a DAX query by using these information. If you meet us at the conference, stop us and say hello: it’s always nice to know our readers!

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• Configure SQL Server to Allow Remote Connections

  - by Ben Griswold

  Okay. This post isn’t about configuring SQL to allow remote connections, but wait, I still may be able to help you out. "A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 – Could not open a connection to SQL Server)" I love this exception. It summarized the issue and leads you down a path to solving the problem.  I do wish the bit about allowing remote connections was left out of the message though. I can’t think of a time when having remote connections disabled caused me grief.  Heck, I can’t ever remember how to enable remote connections unless I Google for the answer. Anyway, 9 out of 10 times, SQL Server simply isn’t running.  That’s why the exception occurs.  The next time this exception pops up, open up the services console and make sure SQL Server is started.  And if that’s not the problem, only then start digging into the other possible reasons for the failure.

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• DIVIDE vs division operator in #dax

  - by Marco Russo (SQLBI)

  Alberto Ferrari wrote an interesting article about DIVIDE performance in DAX. This new function has been introduced in SQL Server Analysis Services 2012 SP1, so it is available also in Excel 2013 (which still doesn’t have other features/fixes introduced by following Cumulative Updates…). The idea that instead of writing: IF ( Sales[Quantity] <> 0, Sales[Amount] / Sales[Quantity], BLANK () ) you can write: DIVIDE ( Sales[Amount], Sales[Quantity] ) There is a third optional argument in DIVIDE that defines the result in case the denominator (second argument) is zero, and by default its value is BLANK, so I omitted the third argument in my example. Using DIVIDE is very important, especially when you use a measure in MDX (for example in an Excel PivotTable) because it raise the chance that the non empty evaluation for the result is evaluated in bulk mode instead of cell-by-cell. However, from a DAX point of view, you might find it’s better to use the standard division operator removing the IF statement. I suggest you to read Alberto’s article, because you will find that an expression applying a filter using FILTER is faster than using CALCULATE, which is against any rule of thumb you might have read until now! Again, this is not always true, and depends on many conditions – trying to simplify, we might say that for a simple calculation, the query plan generated by FILTER could be more efficient – but, as usual, it depends, and 90% of the times using FILTER instead of CALCULATE produces slower performance. Do not take anything for granted, and always check the query plan when performance are your first issue!

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• Web2.0, AJAX, HTML5, Facebook, Social web, openid, Oauth, web browsers... where is all this going ?

  - by jokoon

  We have seen many new things appear in the last 7 or 5 five years on the web: Facebook, html5 appeared, new browsers grew strongly, Google failed with Wave... Since Facebook and other stuff like Gtalk and Gmail, I thought and hoped that forums, chat, mail, usenet, conversation rooms and p2p protocols could inter operate to allow the user to use all those services transparently. Of course I realized that things are far much complicated, for several reasons: the IETF cannot invent new things: they just propose standards. Microsoft as well as big players often are obstacles to relevant innovation regarding open formats. The biggest stories being document formats or internet explorer with its long reaction to support web standards. Smartphones, thanks to the appearances of OSes such as iOS and Android, are finally able to navigate on internet: former devices were deaf, they weren't directly connected to internet. The mail protocol were left unchanged even with the grow of spam and malwares. I don't know what to think, because I think there is still a lot to do, but I feel like it will never happen or that nobody seems interested in those basic text transmit features... So what do you think what are the next big steps in the evolution of the web ? Do you think is will still walk hand in hand with open source ?

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• Execute code every hour

  - by Linger

  I need to create a web service that executes every hour. It will be used to review data in a database and add alerts to a table in the same database if certain conditions are met/not met. What we currently have is: We have end devices that use Python to report to an Amazon Web Services (AWS) virtual server. The AWS server takes that information and stores it in a MySQL database. The AWS server is Linux running Django and Apache. I need to be able to have some python code run every hour that verifies the data that has been stored by the end devices. If certain conditions are not met then a record will be added to the alerts table in the database. We originally contracted to have the above setup created. I am new to Python, Django, and Apache. However, I have already made several changes to the Python code that sends and also receives the data from the end devices. I am a coder that is breaking into web programming. Does anyone have any recommendations on how I can do this?

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• Parallelize incremental processing in Tabular #ssas #tabular

  - by Marco Russo (SQLBI)

  I recently came in a problem trying to improve the parallelism of Tabular processing. As you know, multiple tables can be processed in parallel, whereas the processing of several partitions within the same table cannot be parallelized. When you perform an incremental update by adding only new rows to existing table, what you really do is adding rows to a partition, so adding rows to many tables means adding rows to several partitions. The particular condition you have in this case is that every partition in which you add rows belongs to a different table. Adding rows implies using the ProcessAdd command; its QueryBinding parameter specifies a SQL syntax to read new rows, otherwise the original query specified for the partition will be used, and it could generate duplicated data if you don’t have a dynamic behavior on the SQL side. If you create the required XMLA code manually, you will find that the QueryBinding node that should be part of the ProcessAdd command has to be moved out from ProcessAdd in case you are using a Batch command with more than one Process command (which is the reason why you want to use a single batch: run multiple process operations in parallel!). If you use AMO (Analysis Management Objects) you will find that this combination is not supported, even if you don’t have a syntax error compiling the code, but you might obtain this error at execution time: The syntax for the 'Process' command is incorrect. The 'Bindings' keyword cannot appear under a 'Process' command if the 'Process' command is a part of a 'Batch' command and there are more than one 'Process' commands in the 'Batch' or the 'Batch' command contains any out of line related information. In this case, the 'Bindings' keyword should be a part of the 'Batch' command only. If this is happening to you, the best solution I’ve found is manipulating the XMLA code generated by AMO moving the Binding nodes in the right place. A more detailed description of the issue and the code required to send a correct XMLA batch to Analysis Services is available in my article Parallelize ProcessAdd with AMO. By the way, the same technique (and code) can be used also if you have the same problem in a Multidimensional model.

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• Where can I find Ad Networks with single liner Ads?

  - by MaX

  I've developed a site that serves pure HTML Weather widgets (and they are great looking too). Just after two months I am generating 1.25K hits monthly (Google Analytics). Now I want to generate some money out of it. You can check my service out on Here . I am looking for affiliate or an Ads service that can I can hookup within but there is a twist in story. I want single liner text Ad in a particular location otherwise widgets will look rubbish, see this snapshot: Plus I have some unique places in my site to place some banner ads as well, Here are existing set of services that I've already tried: Ad Sense, doesn't allow or have such formats of methods. Peefly provides you with straight links works best but I recorded some clicks (Through Google Events) and they didn't show me any, plus it introduces overhead of manually going and choosing your links. BidVertise totally rubbish opens popups and what not, makes site look like spam I am new to this ad stuff so have a limited knowledge. Suggestions please? I have one more place in Forecast but I want to start simple. P.S. I also have a MetroUI like widget coming in the pipeline but its not ready yet.

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• How to restart RoR services after server has been rebooted

  - by Alan DeLonga

  Update I have been searching around to see what services would possibly need to be restarted in my project after reboot. One of them was thinking sphinx, which I finally got to the point where it logs: [Fri Nov 16 19:34:29.820 2012] [29623] accepting connections But I still cant run searchd or searchd --stop because there was no generated sphinx.conf file in the etc/sphinxsearch for more info refer to this open thread on thinking_sphinx after reboot I then turned to looking into restarting unicorn or thin based on some insight I got. The issue is when I check my gems I see one for thin AND unicorn. But when I try to start either one of them they have no file residing in etc/init.d/ where the nginx and sphinxsearch files reside... Would rebooting totally erase the files for an app server like thin or unicorn? We are hosted on Rackspace running ruby 1.9.2p290 rails (3.2.8, 3.2.7, 3.2.0) nginx/1.1.19 notice that there are gems for unicorn and thin but there is no unicorn.rb or thin.rb in my config folder for my app... I am still super lost if any one can give me some insight on some steps to take to figure this out I would really appreciate it. Anything would help, thanks for reading. thin 1.4.1 unicorn 4.3.1 When I run unicorn I get the same issue as referenced here : > /usr/local/bin/unicorn start /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.3.1/lib/unicorn/configurator.rb:610:in `parse_rackup_file': rackup file (start) not readable (ArgumentError) from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.3.1/lib/unicorn/configurator.rb:76:in `reload' from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.3.1/lib/unicorn/configurator.rb:67:in `initialize' from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.3.1/lib/unicorn/http_server.rb:104:in `new' from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.3.1/lib/unicorn/http_server.rb:104:in `initialize' from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.3.1/bin/unicorn:121:in `new' from /usr/local/lib/ruby/gems/1.9.1/gems/unicorn-4.3.1/bin/unicorn:121:in `<top (required)>' from /usr/local/bin/unicorn:19:in `load' from /usr/local/bin/unicorn:19:in `<main>' When I run thin it just opens a command line prompt... /usr/local/bin/thin start >> Using rack adapter Other gems: * LOCAL GEMS * actionmailer (3.2.8, 3.2.7, 3.2.0) actionpack (3.2.8, 3.2.7, 3.2.0) activemodel (3.2.8, 3.2.7, 3.2.0) activerecord (3.2.8, 3.2.7, 3.2.0) activeresource (3.2.8, 3.2.7, 3.2.0) activesupport (3.2.8, 3.2.7, 3.2.0) arel (3.0.2) builder (3.0.0) bundler (1.1.5) carmen (1.0.0.beta2) carmen-rails (1.0.0.beta3) cocaine (0.2.1) coffee-rails (3.2.2) coffee-script (2.2.0) coffee-script-source (1.3.3) daemons (1.1.9) erubis (2.7.0) eventmachine (0.12.10) execjs (1.4.0) faraday (0.8.4) faraday_middleware (0.8.8) foursquare2 (1.8.2) geokit (1.6.5) hashie (1.2.0) hike (1.2.1) httparty (0.8.3) httpauth (0.1) i18n (0.6.0) journey (1.0.4) jquery-rails (2.0.2) json (1.7.4, 1.7.3) jwt (0.1.5) kgio (2.7.4) lastfm (1.8.0) libv8 (3.3.10.4 x86_64-linux) mail (2.4.4) mime-types (1.19, 1.18) minitest (1.6.0) multi_json (1.3.6) multi_xml (0.5.1) multipart-post (1.1.5) mysql2 (0.3.11) oauth2 (0.8.0) paperclip (3.1.1) polyglot (0.3.3) rack (1.4.1) rack-cache (1.2) rack-ssl (1.3.2) rack-test (0.6.1) rails (3.2.8, 3.2.7, 3.2.0) railties (3.2.8, 3.2.7, 3.2.0) raindrops (0.10.0, 0.9.0) rake (0.9.2.2, 0.8.7) rdoc (3.12, 2.5.8) riddle (1.5.3) sass (3.2.0, 3.1.19) sass-rails (3.2.5) sprockets (2.1.3) sqlite3 (1.3.6) sqlite3-ruby (1.3.3) therubyracer (0.10.2, 0.10.1) thin (1.4.1) thinking-sphinx (2.0.10) thor (0.16.0, 0.15.4, 0.14.6) tilt (1.3.3) treetop (1.4.10) tzinfo (0.3.33) uglifier (1.2.7, 1.2.4) unicorn (4.3.1) xml-simple (1.1.1) I am working on a project that was built by another group. I made some modifications to a constants file in the config folder (changing some values for arrays that populated some drop down fields), but the app had to be rebooted before those changes would be recognized. The hosting is through Rackspace, we rebooted through the option on their site. I contacted them and checked the status of our server, the port is open and operational. The problem is the app is not running when you go to the address for the site. Then when I put in the ip address of the server it just says "Welcome to Nginx". But in a log files I see: [Thu Nov 15 02:34:37.945 2012] [15916] caught SIGTERM, shutting down [Thu Nov 15 02:34:37.996 2012] [15916] shutdown complete I am not very versed in server side set up. I have also never worked on a Rails project that had to have specific services started before the application will start. Any insight as to how to figure out what services need to be restarted and how to go about restarting them would be greatly appreciated. I feel kind of dead in the water at this point... Thanks, Alan

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