BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  TDatabase Connection lost          BorlandTalk.com Forum Index -> Delphi VCL Components Using View previous topic :: View next topic   Author Message Daniel Olivares Guest Posted: Wed Oct 29, 2003 8:07 pm    Post subject: TDatabase Connection lost Hi. I'm using a TDatabase Component, and if i try to make any operation to the database after the program has lost the db conection, then the application just get closed widout any error message. any idea on how can i know if the database connection is lost? like an event or something? so i can reconnect? thanks -- Lic. Daniel Olivares Back to top Robert Cerny Guest Posted: Thu Oct 30, 2003 11:57 am    Post subject: Re: TDatabase Connection lost Normally you get an exception, if you try a database operation after connection lost. If the application is closed instead, you have a buggy driver and you should upgrade BDE and the database driver. -- Robert Cerny DelphiShaman "Daniel Olivares" <danielog76 (AT) hotmail (DOT) com> wrote Quote: Hi. I'm using a TDatabase Component, and if i try to make any operation to the database after the program has lost the db conection, then the application just get closed widout any error message. any idea on how can i know if the database connection is lost? like an event or something? so i can reconnect? thanks -- Lic. Daniel Olivares Back to top Peter Below (TeamB) Guest Posted: Fri Oct 31, 2003 8:41 pm    Post subject: Re: TDatabase Connection lost In article <3fa01bd0$1 (AT) newsgroups (DOT) borland.com>, Daniel Olivares wrote: Quote: Hi. I'm using a TDatabase Component, and if i try to make any operation to the database after the program has lost the db conection, then the application just get closed widout any error message. That is not normal, unless you are keeping some essential information from us, that is. If the DB stuff is done in a DLL an exception raised in the DLL could kill the host app, for example. -- Peter Below (TeamB) Use the newsgroup archives : http://www.mers.com/searchsite.html http://www.tamaracka.com/search.htm http://groups.google.com http://www.prolix.be Back to top Daniel Olivares Guest Posted: Tue Nov 04, 2003 5:43 pm    Post subject: Re: TDatabase Connection lost No, all is into the exe. i have no dlls for the database connection, and the point is for example. if i´m working connected toi the database, and then disconect the network cable, and then i try to insert, read, refrech, or do anything to the database, then the application just gets closed with no errors.... i would really like to advise the user that the connection to the database was lost and the try to reconnect. or what kind of essential info do you mean? -- Lic. Daniel Olivares "Peter Below (TeamB)" <100113.1101 (AT) compuXXserve (DOT) com> escribió en el mensaje news:VA.0000a60a.00ac3fde (AT) nomail (DOT) please... Quote: In article <3fa01bd0$1 (AT) newsgroups (DOT) borland.com>, Daniel Olivares wrote: Hi. I'm using a TDatabase Component, and if i try to make any operation to the database after the program has lost the db conection, then the application just get closed widout any error message. That is not normal, unless you are keeping some essential information from us, that is. If the DB stuff is done in a DLL an exception raised in the DLL could kill the host app, for example. -- Peter Below (TeamB) Use the newsgroup archives : http://www.mers.com/searchsite.html http://www.tamaracka.com/search.htm http://groups.google.com http://www.prolix.be Back to top Peter Below (TeamB) Guest Posted: Tue Nov 04, 2003 7:28 pm    Post subject: Re: TDatabase Connection lost In article <3fa7e2fa$1 (AT) newsgroups (DOT) borland.com>, Daniel Olivares wrote: Quote: No, all is into the exe. i have no dlls for the database connection, and the point is for example. if i´m working connected toi the database, and then disconect the network cable, and then i try to insert, read, refrech, or do anything to the database, then the application just gets closed with no errors.... i would really like to advise the user that the connection to the database was lost and the try to reconnect. or what kind of essential info do you mean? In this context i was mainly aiming at the general layout of the app, e.g. whether it is monolithic or several modules. Of course you also withheld any detail about what database engine you are using. If you use the BDE, for example, you in fact have a host app + DLL setup, since the BDE sits in a DLL (several, in fact). I don't know enough about its internals to offer any advice here. You may want to try b.p.d.database.desktop, or perhaps the b.p.bde group. -- Peter Below (TeamB) Use the newsgroup archives : http://www.mers.com/searchsite.html http://www.tamaracka.com/search.htm http://groups.google.com http://www.prolix.be Back to top Daniel Olivares Guest Posted: Tue Nov 04, 2003 7:42 pm    Post subject: Re: TDatabase Connection lost ok thanks i'll try it -- Lic. Daniel Olivares "Peter Below (TeamB)" <100113.1101 (AT) compuXXserve (DOT) com> escribió en el mensaje news:VA.0000a62f.006752a6 (AT) nomail (DOT) please... Quote: In article <3fa7e2fa$1 (AT) newsgroups (DOT) borland.com>, Daniel Olivares wrote: No, all is into the exe. i have no dlls for the database connection, and the point is for example. if i´m working connected toi the database, and then disconect the network cable, and then i try to insert, read, refrech, or do anything to the database, then the application just gets closed with no errors.... i would really like to advise the user that the connection to the database was lost and the try to reconnect. or what kind of essential info do you mean? In this context i was mainly aiming at the general layout of the app, e.g. whether it is monolithic or several modules. Of course you also withheld any detail about what database engine you are using. If you use the BDE, for example, you in fact have a host app + DLL setup, since the BDE sits in a DLL (several, in fact). I don't know enough about its internals to offer any advice here. You may want to try b.p.d.database.desktop, or perhaps the b.p.bde group. -- Peter Below (TeamB) Use the newsgroup archives : http://www.mers.com/searchsite.html http://www.tamaracka.com/search.htm http://groups.google.com http://www.prolix.be Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         BorlandTalk.com Forum Index -> Delphi VCL Components Using 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.