BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Paradox table repair          BorlandTalk.com Forum Index -> Delphi Databases (Desktop) View previous topic :: View next topic   Author Message Alan Guest Posted: Tue Jan 20, 2004 5:49 am    Post subject: Paradox table repair We got a client whose has our company's legacy application whose database is Paradox 7 version tables. Anyone knows there is table repair utility for download ? Back to top Don Gollahon Guest Posted: Tue Jan 20, 2004 7:10 am    Post subject: Re: Paradox table repair Try http://info.borland.com/devsupport/bde/utilities.html I have another one I like better but I can't remember where I downloaded it. "Alan" <NOSPAMalan_pltse (AT) yahoo (DOT) com.au> wrote Quote: We got a client whose has our company's legacy application whose database is Paradox 7 version tables. Anyone knows there is table repair utility for download ? Back to top Bill Todd (TeamB) Guest Posted: Tue Jan 20, 2004 2:25 pm    Post subject: Re: Paradox table repair On Tue, 20 Jan 2004 16:49:21 +1100, "Alan" <NOSPAMalan_pltse (AT) yahoo (DOT) com.au> wrote: Quote: We got a client whose has our company's legacy application whose database is Paradox 7 version tables. Anyone knows there is table repair utility for download ? The best one I have found is at www.rksolution.cz . -- Bill (TeamB) (TeamB cannot respond to questions received via email) Back to top Alan Guest Posted: Tue Jan 20, 2004 11:32 pm    Post subject: Re: Paradox table repair What is the difference between pack and not pack the tables after table repair ? "Bill Todd (TeamB)" <no (AT) no (DOT) com> wrote Quote: On Tue, 20 Jan 2004 16:49:21 +1100, "Alan" [email]NOSPAMalan_pltse (AT) yahoo (DOT) com.au[/email]> wrote: We got a client whose has our company's legacy application whose database is Paradox 7 version tables. Anyone knows there is table repair utility for download ? The best one I have found is at www.rksolution.cz . -- Bill (TeamB) (TeamB cannot respond to questions received via email) Back to top Bill Todd (TeamB) Guest Posted: Wed Jan 21, 2004 2:34 am    Post subject: Re: Paradox table repair Pack removes all unused space from the data blocks. This may make searching slightly faster. It also makes inserting new records slower because, initially, a block split must be performed each time a record is inserted. As you insert more records and more blocks are split there are more blocks with empty space and not every insert will force a full block to be split. -- Bill (TeamB) (TeamB cannot respond to questions received via email) Back to top Olivier Beltrami Guest Posted: Wed Jan 21, 2004 9:30 am    Post subject: Re: Paradox table repair Interesting. I have some Paradox temporary tables that are filled with up to 30.000 records, and profiling has shown me that the time spent on the append (the table is indexed) is very significant. Are you saying that if, between runs, I just emptied the temporary table (currently I delete it and re-create it) I would get a speed increase ? Olivier "Bill Todd (TeamB)" <no (AT) no (DOT) com> a écrit dans le message de news:c5pr00hueca427jjcpa23m0ueto9s9dnjr (AT) 4ax (DOT) com... Quote: Pack removes all unused space from the data blocks. This may make searching slightly faster. It also makes inserting new records slower because, initially, a block split must be performed each time a record is inserted. As you insert more records and more blocks are split there are more blocks with empty space and not every insert will force a full block to be split. Back to top Pak Tse Guest Posted: Wed Jan 21, 2004 11:25 am    Post subject: Re: Paradox table repair Is it uncommon that the Paradox type tables cannot be repaired ? What can I do if it is unfortunately I cannot repair the tables using a repair utitlity ? I just afraid of I cannot get my client's tables repaired/rebuild ? "Olivier Beltrami" <obeltrami at wanadoo dot fr> wrote Quote: Interesting. I have some Paradox temporary tables that are filled with up to 30.000 records, and profiling has shown me that the time spent on the append (the table is indexed) is very significant. Are you saying that if, between runs, I just emptied the temporary table (currently I delete it and re-create it) I would get a speed increase ? Olivier "Bill Todd (TeamB)" <no (AT) no (DOT) com> a écrit dans le message de news:c5pr00hueca427jjcpa23m0ueto9s9dnjr (AT) 4ax (DOT) com... Pack removes all unused space from the data blocks. This may make searching slightly faster. It also makes inserting new records slower because, initially, a block split must be performed each time a record is inserted. As you insert more records and more blocks are split there are more blocks with empty space and not every insert will force a full block to be split. Back to top Bill Todd (TeamB) Guest Posted: Wed Jan 21, 2004 2:04 pm    Post subject: Re: Paradox table repair On Wed, 21 Jan 2004 10:30:01 +0100, "Olivier Beltrami" <obeltrami at wanadoo dot fr> wrote: Quote: I just emptied the temporary table (currently I delete it and re-create it) I would get a speed increase ? It depends on how you empty the table. Calling EmptyTable also deletes and recreates the table. Using a DELETE query, IIRC, just deletes the table and leaves the empty data blocks in place. You can see this be checking the size of the .DB file after you delete the records. If you are adding all of the records to the table at once consider dropping the primary index, adding the records and adding the index. -- Bill (TeamB) (TeamB cannot respond to questions received via email) Back to top Bill Todd (TeamB) Guest Posted: Wed Jan 21, 2004 2:06 pm    Post subject: Re: Paradox table repair On Wed, 21 Jan 2004 22:25:27 +1100, "Pak Tse" <pak_tse (AT) NOSPAMoptusnet (DOT) com.au> wrote: Quote: Is it uncommon that the Paradox type tables cannot be repaired ? Fairly uncommon. It depends on what is wrong with the table. No repair utility can repair corrupt data values. The repair tools only repair the logical structure of the table. Quote: What can I do if it is unfortunately I cannot repair the tables using a repair utitlity ? I just afraid of I cannot get my client's tables Restore the database from last night's backup. -- Bill (TeamB) (TeamB cannot respond to questions received via email) Back to top Olivier Beltrami Guest Posted: Thu Jan 22, 2004 12:30 pm    Post subject: Re: Paradox table repair Quote: It depends on how you empty the table. Calling EmptyTable also deletes and recreates the table. Using a DELETE query, IIRC, just deletes the table and leaves the empty data blocks in place. You can see this be checking the size of the .DB file after you delete the records. I am using a TTable and calling EmptyTable. Quote: If you are adding all of the records to the table at once consider dropping the primary index, adding the records and adding the index. I tried it. The append calls go much much faster, but then it takes almost a minute to re-create the indices at the end ... the net difference is minimal. Olivier 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 (Desktop) 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.