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• how to debug SIGSEGV in jvm GCTaskThread

  - by ekeren

  Hi, My application is experiencing cashes in production. The crash dump indicates a SIGSEGV has occurred in GCTaskThread It uses JNI, so there might be some source for memory corruption, although I can't be sure. How can I debug this problem - I though of doing -XX:OnError... but i am not sure what will help me debug this. Also, can some of you give a concrete example on how JNI code can crash GC with SIGSEGV EDIT: OS:SUSE Linux Enterprise Server 10 (x86_64) vm_info: Java HotSpot(TM) 64-Bit Server VM (11.0-b15) for linux-amd64 JRE (1.6.0_10-b33), built on Sep 26 2008 01:10:29 by "java_re" with gcc 3.2.2 (SuSE Linux)

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• What are your build and release steps? When to increment build numbers?

  - by Ed

  I am having trouble defining and automating my build process despite simple requirements: Every build should have a unique build number. Every tagged release should be reproducible What I have: A C++, Red Hat Enterprise Linux 5.x, Subversion development environment. A build machine ( actually a virtual machine ) A version.h file with #defines for major, minor, and buildnumber. A script for incrementing the version.h buildnumber. A rpmbuild spec file that exports the tagged Subversion source, builds, and makes the rpm installer packages. Questions: Assuming multiple developers per project, when should the build number be incremented and version.h file be checked-in? The build machine? Some sort of Subversion hook? Pre-build or post-build? Thanks in advance for those willing to take the time to share their experience with build processes. -Ed Linux newbie. Former Windows C++/.NET developer.

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• How to schedule daily backup in SQL Server 2008 Web Edition

  - by Xenon

  In SQL Server Management Studio I created a maintenance plan but it won't work Error is; "Message Executed as user: LITESPELL-19C34\Administrator. Microsoft (R) SQL Server Execute Package Utility Version 10.0.1600.22 for 32-bit Copyright (C) Microsoft Corp 1984-2005. All rights reserved. The SQL Server Execute Package Utility requires Integration Services to be installed by one of these editions of SQL Server 2008: Standard, Enterprise, Developer, or Evaluation. To install Integration Services, run SQL Server Setup and select Integration Services. The package execution failed. The step failed." But in Microsoft page http://www.microsoft.com/sqlserver/2008/en/us/web.aspx in Automate tasks and policies section it is written that backup can be scheduled in this edition but how?

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• Remove another user's lock obtained with sp_getapplock on SQL Server

  - by joshperry

  We have a system that uses sp_getapplock to create an exclusive mutex any time someone opens an order in the GUI. This is used to prevent multiple people from making changes to an order simultaneously. Sometimes people will open an order and go home, leaving it open. This effectively blocks anyone from being able to make changes to the order. I then get emails, calls and end up doing a kill <spid> in enterprise manager. Obviously I've gotten sick of this and want to make a quick self-service webform. The main problem I've run into is that kill requires sysadmin privileges, which I do not want to give to the user that the our website runs as. I have tried sp_releaseapplock but this doesn't let you release another user's lock (even when calling it as a sysadmin). So, finally my question; does anyone know of an alternative method to release a lock that was obtained by another user using sp_getapplock?

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• Which web Tier Framework for a public commercial website with heavy load ?

  - by Maxime ARNSTAMM

  Hello everyone, As a part of an enterprise architecture exercise, i need to find a java-based framework filling these constraints : heavy (i think) load : 5000 concurrent connections widely known : can't be too exotic, the contractors would be too high priced. relatively easy to use : developpement time must be reasonnable must be as compliant as possible with the css/html layout produced by a designer Must look like "web 2.0" from the marketing point of view. What i learned from my limited experience is : jsf : 1, don't know. 2, 3 ok. 4 not ok (at least not without huge effort) wicket : 1, not really. 2, 3 and 4 ok. gwt : 1, don't know. 2, 3 ok. 4 not ok (but more ok than jsf) others : not really "web 2.0" or not really known I'm really junior, so my ideas about those frameworks are probably wrong, that's why i come to you, stackoverflowees. Thanks for helping :)

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• Career path decisions

  - by MindFold

  Hi all, I'm on a verge of quitting my current job as a .NET programmer. i'm 25 years old and have been a .NET programmer in the past 5-6 years, but now i wonder if maybe i should take this opurtunity and try some other things, like RT\Embedded or Driver development. My pro\cons: i love .NET since you can write enterprise systems with it, learn cool development methodologies and practice many patterns i want to learn RT\Embedded\Driver since its at the heart of so many things and i'm feeling this is a black hole for me. My question are: Is making career leaps a good idea? How can i manage to get myself into a job in RT\Embedded as my whole Resume has c# written all over it. What should i bet my cards on this days? android? java? flash? silverlight? etc?

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• What might cause SQL error Cannot find the object "dbo.InspectionEvents" because it does not exist o

  - by mrtrombone

  Hi My ASP.Net app is periodically getting the error 'Cannot find the object dbo."XXXX" because it does not exist or you do not have permissions' when it tries to execute a specific stored procedure that writes to the database. I have seen a few forum posts about this issue but the strange thing is that the method works fine almost all of the time, just every now and then I see it in my error logs. Can anyone tell me why this might works Ok most of the time but occassionally fire the error? Application is C# using Enterprise Library 4.1 Data Access. Database is SQL Server 2005 Cheers

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• How to update the original InfoPath form from within Workflow?

  - by Allen.Zhang

  Hi All, I have created an InfoPath form (e.g. Form_ExpenseReport) for collect data from end users, and a number of task forms (also InfoPath form, e.g. TaskForm_1, TaskForm_2) for my state machine workflow use. The users want to see all the comments of Task forms (TaskForm_1 & TaskForm_2) in the original IP form (Form_ExpenseReport). How can I update the first form from within workflow? Can anybody give me some tips? My environment: MOSS 2007 Enterprise license VS 2008

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• recommendations for rich scalable internet application

  - by Wouter Roux

  I am planning to develop a web application that must perform the following actions: User authentication allow authenticated user to download data from USB device (roughly 5 meg data) upload the data from the USB device to processing server process the data and display the results to the user further requirements/restrictions: the USB driver supports windows (2000, XP, Vista, 7) the application must support IE, Firefox and Chrome the USB driver must be installed when pointing to the web application the first time the USB driver exposes functionality through exported functions in dll scalability and eye candy is important server details: Windows Server 2008 Enterprise x64, IIS 7.0, SQL server 2008 With the limited details specified: What technology would you recommend? (eg silverlight/asp.net mvc/wcf). What practices/patterns/3rd party controls would you recommend?

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• Permission denied - /tmp/.ruby_inline/Inline_ImageScience_cdab.c

  - by Ikaros

  I have a Ruby on Rails app that I've recently deployed to a remote server (Ubuntu 9.10, nginx, passenger, ruby-enterprise) and I'm getting the error (works fine locally): Permission denied - /var/www/project_name/tmp/.ruby_inline/Inline_ImageScience_cdab.c First, the folder /tmp/.ruby_inline/ is empty - should it be? Is it trying to create Inline_ImageScience_cdab.c or read it? I think I have all the required gems installed: 'gem list' shows image_science and RubyInline installed. libfreeimage3 and libfreeimage-dev are also installed. I've run chmod 755 on /tmp/.ruby_inline/ to match the permissions on surrounding folders but I cannot go any higher than that, however, or I get another error: /var/www/project_name/tmp/.ruby_inline is insecure (40777). It may not be group or world writable. Exiting. And I guess second, why am I getting this error? :) Thanks

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• How do I draw an ESB on a SoaML diagram?

  - by dave

  I've recently had to draw some architectural diagrams that feature the use of an Enterprise Service Bus. The ESB is critical, so everyone wants it to show up on the diagram. But since it's the center of what everything is connected to, it really of gets in the way. I settled on trying to use SoaML. I color-coded the request points blue and service points green, to help then stand out. The text names on the ports give you a sense of what talks to what, and it's incredibly obvious that everything goes through the ESB. Can anyone comment on my approach? Any suggestions on something better?

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• most popular j2ee based websites

  - by krishna

  J2EE as I understand is used to build Enterprise applications. My question is :What are the most popular public facing(internet) sites using j2ee stack. The one's that I know of are : linkedIn.com ,evite.com and sun ibm and oracle (obviously) Eclipse.org uses php, I wonder why? If you have worked on/know any other sites, can your share your experience and also the technologies used(if that's not an issue)? EDIT:It doesn't have to use the full stack. EDIT : There are quite a few ecommerce websites like bestbuy.com. I know this bcos I worked with the ATG(atg.com) ecommerce suite and their website lists their clients. Iam looking for those kind of examples and also your experience working on them. Please limit to only internet sites

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• Multiple controls with the same ID 'xxx' were found

  - by swapna

  Hi, I have a enterprise application converted from VS2003 to vs2005 . The converted application, in one page i do edit and save i am getting this error. 'Multiple controls with the same ID 'hidWIPID0' were found But the same work fine in the code of vs2003 version without any error. Its a huge application with dynamic master pages and usercontrols etc..So i cant paste the exact code here. But the origin of the error is master page content control. eg: page code MasterPageStrategy:Content id="pnlMain" Error Multiple controls with the same ID 'hidWIPID0' were found View Source MasterPage:pnlMain:_ctl2:hidWIPID0 I Microsoft support there is an article explaining the same issue.But it applies to 1.1 version. I have already converted code in 2.0 version and the error appears in convertd code. http://support.microsoft.com/kb/834608 someone please look into this issue and provide me a solution as it is very urgent. Thanks SNA

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• Facet Version Must be 5.0 - Using Javassist in Websphere

  - by jwmajors81

  I have a Websphere 6.1 EAR that I am trying to deploy and I am currently getting the following message when I add javassist-3.4.GA.jar to the EAR. Facet version for Enterprise Application project IntegrationEARProject must be 5.0 to contain Java EE 5.0 project lib //{path to file}/hibernate/R3_3_1/jars/javassist-3.4.GA.jar. Currently the Project Facets are set as folows: EAR version is 1.4 Websphere version is 6.1 Please note that we do not have any of the feature packs installed currently and I do not have the option to install the feature packs. Is there anything that can be done to get around this issue? I am coding using java 1.5. Thank you very much.

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• Agile Approach for WCM

  - by cameron.f.logan

  Can anyone provide me with advice, opinions, or experience with using an agile methodology to delivery an enterprise-scale Web Content Management system (e.g., Interwoven TeamSite, Tridion)? My current opinion is that to implement a CM system there is a certain--relatively high--amount of upfront work that needs to happen to make sure the system is going to be scalable and efficient for future projects for the multi-year lifespan an WCM is expected to have. This suggests a hybrid approach at best, if not a more waterfall-like approach. I'm really interested to learn what approaches others have taken. Thanks.

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• SQL Server Efficiently dropping a group of rows with millions and millions of rows

  - by Net Citizen

  I recently asked this question: http://stackoverflow.com/questions/2519183/ms-sql-share-identity-seed-amongst-tables (Many people wondered why) I have the following layout of a table: Table: Stars starId bigint categoryId bigint starname varchar(200) But my problem is that I have millions and millions of rows. So when I want to delete stars from the table Stars it is too intense on SQL Server. I cannot use built in partitioning for 2005+ because I do not have an enterprise license. When I do delete though, I always delete a whole category Id at a time. I thought of doing a design like this: Table: Star_1 starId bigint CategoryId bigint constaint rock=1 starname varchar(200) Table: Star_2 starId bigint CategoryId bigint constaint rock=2 starname varchar(200) In this way I can delete a whole category and hence millions of rows in O(1) by doing a simple drop table. My question is, is it a problem to have hundreds of thousands of tables in your SQL Server? The drop in O(1) is extremely desirable to me. Maybe there's a completely different solution I'm not thinking of?

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• Calling a COM+ Component remotely using C#

  - by Arturo Caballero

  Hello, I have a little COM+ component as a service on a remote server. I´m trying to execute a method of this component using: Type type = Type.GetTypeFromProgID("ComPlusTest.ComTestClass",serverName); // Create Service Object service = Activator.CreateInstance(type); // Execute Method String result = service.GetType().InvokeMember("LaunchPackage", BindingFlags.InvokeMethod, null, parameters, null).ToString(); The type is returned as null. What is the best way to do this?? The server is Windows 2003 Enterprise, the service is a .NET component wraped as COM+ (I know that I don´t have to do it that way, but the purpose is to itegrate a legacy App with a .NET component) The purpose of this is just to test that the .NET COM+ Component works. Thanks in advance!

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• How to schedule daily backup in MSSQL Server 2008 Web Edition

  - by Xenon

  In MSSQL Management Studio I created a maintenance plan but it won't work Error is; "Message Executed as user: LITESPELL-19C34\Administrator. Microsoft (R) SQL Server Execute Package Utility Version 10.0.1600.22 for 32-bit Copyright (C) Microsoft Corp 1984-2005. All rights reserved. The SQL Server Execute Package Utility requires Integration Services to be installed by one of these editions of SQL Server 2008: Standard, Enterprise, Developer, or Evaluation. To install Integration Services, run SQL Server Setup and select Integration Services. The package execution failed. The step failed." But in Microsoft page http://www.microsoft.com/sqlserver/2008/en/us/web.aspx in Automate tasks and policies section it is written that backup can be scheduled in this edition but how?

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• How do I create a solr core with the data from an existing one?

  - by steve_d

  Solr 1.4 Enterprise Search Server recommends doing large updates on a copy of the core, and then swapping it in for the main core. I am following these steps: Create prep core: http://localhost:8983/solr/admin/cores?action=CREATE&name=prep&instanceDir=main Perform index update, then commit/optimize on prep core. Swap main and prep core: http://localhost:8983/solr/admin/cores?action=SWAP&core=main&other=prep Unload prep core: http://localhost:8983/solr/admin/cores?action=UNLOAD&core=prep The problem I am having is, the core created in step 1 doesn't have any data in it. If I am going to do a full index of everything and the kitchen sink, that would be fine, but if I just want to update a (large) subset of the documents - that's obviously not going to work. (I could merge the cores, but part of what I'm trying to do is get rid of any deleted documents without trying to make a list of them.) Is there some flag to the CREATE action that I'm missing? The Solr Wiki page for CoreAdmin is a little sparse on details.

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• ASP.NET Connection time out after being idle for a while

  - by yazz

  My ASP.NET website while trying to connect to the database for first time after a period of inactivity throws an time out exception. I understand the connections in the connection pool get terminated after some idle time for some reason (Firewall or Oracle settings) and the pool or app doesn't have a clue about it. Is there any way to validate the connection beforehand so that the first try doesn't throw an exception? I don't have much control over the DB or Firewall settings. So I have to deal with this is my application.(would prefer if there is any web.config settings) I am using: ASP.NET 2.0. Oracle server 11g, Microsoft Enterprise Library DAAB to do all my DB operations. I did some search on this topic but didnt find any solid solution for this yet :(

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• Infopath form publishing and root content type ?

  - by Steve B

  Hi, I have several infopath 2010 form template that I want to publish to a form library in SharePoint 2010 Server with enterprise CaL. All of this forms have a common part (a template part actually). Is it possible to define a common "parent" content type of this forms ? In fact, I want : Form content type (SP OOB) My root form content type, with standard columns "requester", "process name", etc. Form 1 Form 2 etc. other unrelated form 1 other unrelated form 2 Instead of the standard behavior : Form content type (SP OOB) Form 1 Form 2 other unrelated form 1 other unrelated form 2 etc. Behind this question I want to be able to create a dashboard of all form request using a content query web, by simply specifying the content type ... One last word: the idea is to allow a customer (assuming its knowledge is limited to IP 2010 basic form design). So I can't accept answers like "extract files, use a text editor and hack the xsf file"... thx in advance

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• "Attach to process" missing from Delphi 7's Run menu

  - by glob

  I have to resurrect an ancient Delphi 7 application, which means I have to use the D7 IDE. Upgrading the project to a more recent version of Delphi unfortunately isn't an option. My new D7 installation's Run menu is missing Attach to Process. Aside from the missing menu item, the debugger works fine (I can debug normal Delphi executables started with Run). I know D7 supported this feature (it's in the help file), so does anyone have any idea what I've missed? The installation is Delphi 7 Enterprise (Version 7.0 Build 4.453). Current Run menuitems: Run Parameters... - Step Over Trace Into Trace to next Source line Run to Cursor Run Until Return Show Execution Point Program Pause Program Reset - Evaluate/Modify Add Watch Add Breakpoint

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• Do you use enums in your data applications and how?

  - by Ivan

  My practice shows that a general enterprise application has a lot of entities which's nature corresponds to an elementary enumeration. For example We may have an Order entity which may have such fields as "OrderType", "OrderStatus", "Currency", etc. referencing corresponding Entities which are nothing more than just a textual name bound to a key to be referenced. Using enums would look very natural here. But entities have to be defined in application code at design-time, am I right? While in we need to be able to CRUD enum value variants at runtime and use enums in server-side SQL queries (like stored procedures and views). What are you practices and thoughts on this subject? I am particularly interested in C#4, linq and T-SQL.

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• WCF competitive consumer pattern

  - by Simon Thompson

  Is it possible to create a WCF service (web service) that only accepts a single connection at any one time with all other calls either queued or rejected. Need to implement the competitive consumer pattern where there are a number of clients which could deal with task at hand but when a client askes for more work a task must go to only one of them. Usual done as part of an enterprise service bus but can not find one that I'm happy to start using so looking to get this behaviour through a WCF service. Any ideas people ?

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• Microsoft Mdac with SQL Server issue

  - by George2

  Hello everyone, I am new to Microsoft Mdac = http://connect.microsoft.com/VisualStudio/feedback/details/91083/mdac-2-8-for-windows-x64, and I want to use this technology to export data from a SQL Server table (or ADO.Net DataTable object instance) to an Excel file. I am using VSTS 2008 + .Net 2.0 + C# + Windows Server 2008 x64 + SQL Server 2008 Enterprise 64-bit + ADO.Net + ASP.Net + IIS 7.0. My questions, whether Mdac technology could achieve my goal? any tutorial about this area (export from SQL Server to excel using Mdac) for a newbie with samples? thanks in advance, George

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