BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Performance issue with oraoledb & Tadocommand          BorlandTalk.com Forum Index -> Delphi Databases (ADO) View previous topic :: View next topic   Author Message pilmart Guest Posted: Tue Apr 24, 2007 1:46 pm    Post subject: Performance issue with oraoledb & Tadocommand Hi There Am currently using D5 & ado to insert large volumes of data into an Oracle 10g db. I'm using a connection string based on an OraOLEDB.Oracle oledb based connection and a parameterised TADOCommand to insert the data, each call to the insert requires 35 param values to be updated. My process is simple delete the record (based on PK) again using parameterised TADOCommand with PK as the param, on completion insert the new record. Sounds easy...but the performance is horrible, 8000 recs takes about 15mins, is this realistic or am I doing something blindly dumb. I have not attempted to tune anything as yet some eveything is pretty much default. Any help appreciated. Back to top Karol Bieniaszewski Guest Posted: Tue Apr 24, 2007 6:25 pm    Post subject: Re: Performance issue with oraoledb & Tadocommand U¿ytkownik "pilmart" <martin.scullion (AT) capgemini (DOT) com> napisa³ w wiadomo¶ci news:462dc3dd$1 (AT) newsgroups (DOT) borland.com... Quote: Hi There Am currently using D5 & ado to insert large volumes of data into an Oracle 10g db. I'm using a connection string based on an OraOLEDB.Oracle oledb based connection and a parameterised TADOCommand to insert the data, each call to the insert requires 35 param values to be updated. My process is simple delete the record (based on PK) again using parameterised TADOCommand with PK as the param, on completion insert the new record. Sounds easy...but the performance is horrible, 8000 recs takes about 15mins, is this realistic or am I doing something blindly dumb. I have not attempted to tune anything as yet some eveything is pretty much default. Any help appreciated. do you realy need params when you insert data? Karol Bieniaszewski Back to top pilmart Guest Posted: Wed Apr 25, 2007 8:11 am    Post subject: Performance issue "Karol Bieniaszewski" <liviuslivius (AT) poczta (DOT) onet.pl> wrote: Quote: U¿ytkownik "pilmart" <martin.scullion (AT) capgemini (DOT) com> napisa³ w wiadomo¶ci news:462dc3dd$1 (AT) newsgroups (DOT) borland.com... Hi There Am currently using D5 & ado to insert large volumes of data into an Oracle 10g db. I'm using a connection string based on an OraOLEDB.Oracle oledb based connection and a parameterised TADOCommand to insert the data, each call to the insert requires 35 param values to be updated. My process is simple delete the record (based on PK) again using parameterised TADOCommand with PK as the param, on completion insert the new record. Sounds easy...but the performance is horrible, 8000 recs takes about 15mins, is this realistic or am I doing something blindly dumb. I have not attempted to tune anything as yet some eveything is pretty much default. Any help appreciated. do you realy need params when you insert data? Karol Bieniaszewski Not quite sure what you mean, I have a TADOCommand with parameterised sql in the commandtext propert therefore I have to provide parameters to go into the SQL. I could just create a string and use format function to insert the values in %s, %d type placeholders, what other way would I do this ?? and it still doesn't explain the performance issue Back to top Vitali Kalinin Guest Posted: Wed Apr 25, 2007 1:25 pm    Post subject: Re: Performance issue with oraoledb & Tadocommand 1. Do you issue 2 commands one for delete and other for insert? 2. If answer on #1 is yes then do you use same ADOCommand and swap its commandtext each time? 3. Do you append blob values? Anyway performance is really horrible so I would take a look at server side problems like - corrupted or not used indexes, inefficient triggers e.t.c. Back to top pilmart Guest Posted: Wed Apr 25, 2007 3:15 pm    Post subject: Performance "Vitali Kalinin" <vitkalinin (AT) yahoo (DOT) com> wrote: Quote: 1. Do you issue 2 commands one for delete and other for insert? 2. If answer on #1 is yes then do you use same ADOCommand and swap its commandtext each time? 3. Do you append blob values? Anyway performance is really horrible so I would take a look at server side problems like - corrupted or not used indexes, inefficient triggers e.t.c. No I use 2 individual Command object 1 for delete 1 for insert, I have now written an oracle procedure and that seems slow as well Back to top Vitali Kalinin Guest Posted: Wed Apr 25, 2007 4:39 pm    Post subject: Re: Performance So probably this is server side issue Back to top Dmitry Arefiev Guest Posted: Thu Apr 26, 2007 8:11 am    Post subject: Re: Performance issue with oraoledb & Tadocommand Hello You are using approach step-by-step. Or how Thomas Kyte calls it slow-by-slow. Oracle offers many great performance features, allowing to perform your task many times faster. 1) Do you really need to transmit all parameter values from client ? If not, then write PL/SQL procedure. And let it do all work on server side. 2) If you really need to transmit values from client, then ... .... then you should change your data access components to more appropriate to your task Any one supporting Array DML operation / PL/SQL tables will be good choice. For example, AnyDAC. Regards, Dmitry -- Dmitry Arefiev - www.da-soft.com AnyDAC - Oracle, MySQL, MSSQL, MSAccess, IBM DB2, Sybase ASA, DbExpress, ODBC freeware data access framework ThinDAC - mtier data access engine 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 (ADO) 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.