BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Timeout Expired          BorlandTalk.com Forum Index -> Delphi Databases (SQL Servers) View previous topic :: View next topic   Author Message Mike Kabue Guest Posted: Tue Apr 20, 2004 9:55 am    Post subject: Timeout Expired Hi, I have developed a small Vehicle Workshop Management system with Delphi 7, and running on MS SQL 2000 server. There are a number of users who need to access the app at the same time to update different modules. On clicking the App executable, a Timeout Expired error is generated. I think this has something to do with running transactions. Is there anyone who can help in the best way to set transactions (At what point do i have to start a transaction and commit it). I am new to MS SQL 2000 Server!!! Thanks Mike Back to top Kevin Frevert Guest Posted: Tue Apr 20, 2004 10:32 am    Post subject: Re: Timeout Expired Mike, Actually you don't have to explicitly start/commit transactions, the driver can take care of that for you (implicit transactions is the default behavior). You didn't provide any information about the application (BDE? ADO? What is the app doing to cause the error? , etc) Good place to start (article is BDE specific, but concepts still apply)... http://bdn.borland.com/article/0,1410,28160,00.html Other good articles worth mentioning... http://www.hower.org/Kudzu/Articles/DBDesign/index.html http://bdn.borland.com/article/0,1410,27790,00.html Good luck, krf "Mike Kabue" <myqro (AT) yahoo (DOT) com> wrote Quote: Hi, I have developed a small Vehicle Workshop Management system with Delphi 7, and running on MS SQL 2000 server. There are a number of users who need to access the app at the same time to update different modules. On clicking the App executable, a Timeout Expired error is generated. I think this has something to do with running transactions. Is there anyone who can help in the best way to set transactions (At what point do i have to start a transaction and commit it). I am new to MS SQL 2000 Server!!! Thanks Mike Back to top Mike Kabue Guest Posted: Tue Apr 20, 2004 10:57 am    Post subject: Re: Timeout Expired Kevin, The App use ADO to connect. Mike "Kevin Frevert" <Work (AT) drinkingcoffee (DOT) com> wrote Quote: Mike, Actually you don't have to explicitly start/commit transactions, the driver can take care of that for you (implicit transactions is the default behavior). You didn't provide any information about the application (BDE? ADO? What is the app doing to cause the error? , etc) Good place to start (article is BDE specific, but concepts still apply)... http://bdn.borland.com/article/0,1410,28160,00.html Other good articles worth mentioning... http://www.hower.org/Kudzu/Articles/DBDesign/index.html http://bdn.borland.com/article/0,1410,27790,00.html Good luck, krf "Mike Kabue" <myqro (AT) yahoo (DOT) com> wrote in message news:4084f579 (AT) newsgroups (DOT) borland.com... Hi, I have developed a small Vehicle Workshop Management system with Delphi 7, and running on MS SQL 2000 server. There are a number of users who need to access the app at the same time to update different modules. On clicking the App executable, a Timeout Expired error is generated. I think this has something to do with running transactions. Is there anyone who can help in the best way to set transactions (At what point do i have to start a transaction and commit it). I am new to MS SQL 2000 Server!!! Thanks Mike Back to top Kevin Frevert Guest Posted: Tue Apr 20, 2004 12:11 pm    Post subject: Re: Timeout Expired Mike, Good choice What components are you using (TADODataSets, TADOCommand, etc)? Are there any blocks (Enterprise Manager->Your server->Management->Current Activity)? krf "Mike Kabue" <myqro (AT) yahoo (DOT) com> wrote Quote: Kevin, The App use ADO to connect. Mike Back to top Mike Kabue Guest Posted: Tue Apr 20, 2004 1:31 pm    Post subject: Re: Timeout Expired Kevin, I am using TADOQuery only. There are no blocks. The only thing I have done is to start a transaction when a user clicks on a button or tries to create a new record in the database. A number of Tables need to be updated in between. I want the app to only commit these updates if all Tables (4 in Number) have been updated successfuly. Here is how it happens breifly. To update a parts requisition: 1. The user enter a requisition number-> the system checks if the requisition has already been inputed earlier a.) If not yet, a transaction is started, and a new entry is inserted into the WKrequisition table. b.) The user peoceeds to input the line items (required parts etc) which reads the part numbers from a WKStocks Table and Updates the Line Table WKItems. c.)After all the Line Table items have been input the user can choose to save the whole transaction - In this case, the Line Table is updated with the Requision number and transaction commited or d.)The user clicks on a cancel button and the whole transaction (Requisition and Line Items) are dropped and the transaction is rolled back. e.) The User can then choose to start the whole process once again. Lengthy!!, but this is a brief of what the app operates in one of the modules. Mike "Kevin Frevert" <Work (AT) drinkingcoffee (DOT) com> wrote Quote: Mike, Good choice What components are you using (TADODataSets, TADOCommand, etc)? Are there any blocks (Enterprise Manager->Your server->Management->Current Activity)? krf "Mike Kabue" <myqro (AT) yahoo (DOT) com> wrote in message news:40850407 (AT) newsgroups (DOT) borland.com... Kevin, The App use ADO to connect. Mike Back to top Kevin Frevert Guest Posted: Tue Apr 20, 2004 1:57 pm    Post subject: Re: Timeout Expired Mike, Ideally, keep the transactions on the server (triggers, stored procs) and only on the most extreme exceptions allow explicit transactions to be handled by end-users (ex. waiting for them to click a button). Take a look at using TClientDataSets http://community.borland.com/article/0,1410,22571,00.html http://community.borland.com/article/0,1410,20847,00.html or use ADO in batch update mode. Also for new development, use TADODataSets instead of TADOQuery. TADOQuerys are really meant for backward compatibility/conversion of (BDE) TQuerys. TADODataSets and TADOCommands are "closer" to the OLE-DB layer (ADO) than TADOQuery and TADOStoredProc. In a batch mode (either TADODataSet->TDataSetProvider->TClientDataSet or TADODataSet.LockType=ltBatchOptimistic) you can apply changes to the database on the Save button click and do nothing (close the dataset, refresh, etc) on the Cancel (letting ADO commit/rollback changes implicitly). Good luck, krf "Mike Kabue" <myqro (AT) yahoo (DOT) com> wrote Quote: Kevin, I am using TADOQuery only. Back to top Mike Kabue Guest Posted: Tue Apr 20, 2004 2:05 pm    Post subject: Re: Timeout Expired Kevin, Thanks, will try it out and let you know how it works out. Mike "Kevin Frevert" <Work (AT) drinkingcoffee (DOT) com> wrote Quote: Mike, Ideally, keep the transactions on the server (triggers, stored procs) and only on the most extreme exceptions allow explicit transactions to be handled by end-users (ex. waiting for them to click a button). Take a look at using TClientDataSets http://community.borland.com/article/0,1410,22571,00.html http://community.borland.com/article/0,1410,20847,00.html or use ADO in batch update mode. Also for new development, use TADODataSets instead of TADOQuery. TADOQuerys are really meant for backward compatibility/conversion of (BDE) TQuerys. TADODataSets and TADOCommands are "closer" to the OLE-DB layer (ADO) than TADOQuery and TADOStoredProc. In a batch mode (either TADODataSet->TDataSetProvider->TClientDataSet or TADODataSet.LockType=ltBatchOptimistic) you can apply changes to the database on the Save button click and do nothing (close the dataset, refresh, etc) on the Cancel (letting ADO commit/rollback changes implicitly). Good luck, krf "Mike Kabue" <myqro (AT) yahoo (DOT) com> wrote in message news:40852803 (AT) newsgroups (DOT) borland.com... Kevin, I am using TADOQuery only. Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         BorlandTalk.com Forum Index -> Delphi Databases (SQL Servers) All times are GMT Page 1 of 1   Jump to: Select a forum C++ Builder Newsgroups----------------C++ BuilderC++ Builder (ActiveX)C++ Builder (Announcements)C++ Builder (Command Line Tools)C++ Builder DatabasesC++ Builder Databases (ADO)C++ Builder Databases (Desktop)C++ Builder Databases (InterBase Express)C++ Builder Databases (Multi-Tier)C++ Builder Databases (SQL Servers)C++ Builder (Graphics)C++ Builder (IDE)C++ Builder (Internet)C++ Builder (Internet Socket)C++ Builder (Internet Web)C++ Builder (Jobs)C++ Builder (Language)C++ Builder (Language C++)C++ Builder (Compatibility with MFC)C++ Builder (Native API)C++ Builder (Non-Technical)C++ Builder (Students)C++ Builder (Third Party Tools)C++ Builder (Upgrade)C++ Builder (VCL)C++ Builder (VCL Components Usage)C++ Builder (VCL Components Development)C++ Builder (VCL Usage)C++ Builder (WinAPI)C++ Builder Installation Delphi Newsgroups----------------Delphi (General)Delphi ActiveX Controls UsageDelphi ActiveX Controls DevelopmentDelphi As400Delphi DatabasesDelphi Databases (ADO)Delphi Databases (dbExpress)Delphi Databases (Desktop)Delphi Databases (InterBase Express)Delphi Databases (Multi-Tier)Delphi Databases (SQL Servers)Delphi DeploymentDelphi GraphicsDelphi IDEDelphi InternationalizationDelphi InternetDelphi Internet Isapi-WebBrokerDelphi Internet WebSnapDelphi Internet WinsockDelphi JobsDelphi Language BASMDelphi Language ObjectPascalDelphi Model Driven Architecture (General)Delphi Model Driven Architecture (Third Party)Delphi MultimediaDelphi Native APIDelphi Non-TechnicalDelphi ObjectPascalDelphi OLE AutomationDelphi OO designDelphi OpenToolsAPIDelphi Reporting-ChartingDelphi RTLDelphi StudentsDelphi TeamSourceDelphi Thirdparty ToolsDelphi Thirdparty Tools (General)Delphi Thirdparty Tools (IntraWeb)Delphi Thirdparty Tools (RaveReports)Delphi UpgradeDelphi VCLDelphi VCL ComponentsDelphi VCL Components UsingDelphi VCL Components WritingDelphi WebServices SOAPDelphi WinAPIDelphi XMLDelphi Installationcomp.lang.pascal.delphi.components.misccomp.lang.pascal.delphi.components.usagecomp.lang.pascal.delphi.components.writingcomp.lang.pascal.delphi.databasescomp.lang.pascal.delphi.misccomp.sources.delphi JBuilder Newsgroups----------------JBuilderJBuilder AnnouncementsJBuilder Applet IssuesJBuilder As400JBuilder CompilerJBuilder CORBA/RMIJBuilder DatabasesJBuilder DB SwingJBuilder DebuggerJBuilder DeploymentJBuilder DocumentationJBuilder EnterpriseJBuilder HandheldJBuilder IDEJBuilder JavaJBuilder JavaAPIJBuilder Java LanguageJBuilder Java SwingJBuilder Java BeansJBuilder Java Beans UsageJBuilder Java Beans DevelopmentJBuilder JBCLJBuilder JDataStoreJBuilder JobsJBuilder LinuxJBuilder MacintoshJBuilder & MobileSetJBuilder MultiLingual AppsJBuilder Non-TechnicalJBuilder OpenToolsJBuilder Servlets (JSP)JBuilder StudentsJBuilder Team DevelopmentJBuilder Thirdparty ToolsJBuilder UpgradeJBuilder Installation InterBase Newsgroups----------------InterBaseInterBase Bug DiscussionInterBase GeneralInterBase IBConsoleInterBase OpenSourceInterBase ReplicationInterBase SQLInterBase ThirdpartyInterBase Installation Miscellaneous Borland Newsgroups----------------AppCenterAppServerEnteraVisiBroker  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.