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Article View: borland.public.cppbuilder.database.ado
Article #1060

Re: ADO really leaks memory !!!

#1060
From: Roberto
Date: Fri, 12 Nov 2004 01:17
100 lines
3785 bytes
Why ??

This can help anyway?? What should I expect ??

Have you tested the "dummy" app ??

Regards

Roberto

"Viatcheslav V. Vassiliev" <support@oledbdirect.com> wrote in message
news:4193e213$1@newsgroups.borland.com...
> Try minimize/maximize application window and see what happen.
>
> //------------------------------------------
> Regards,
> Vassiliev V. V.
> http://www.managed-vcl.com - using .Net objects in Delphi for Win32 +
> ADO.Net
> http://www.oledbdirect.com - The fastest way to access MS SQL Server,
> MS Jet (Access) and Interbase (through OLEDB)
>
> "Roberto" <roberto@dialtech.com.br> �������/�������� � �������� ���������:
> news:4193a04b@newsgroups.borland.com...
> > Hello Gentlemans
> >
> > I have done a dummy application:
> >
> > void __fastcall TForm1::Button1Click(TObject *Sender)
> > {
> >     int i;
> >     cn->ConnectionString = "Provider=SQLOLEDB.1;Password=sa;Persist
> Security
> > Info=True;User ID=sa;Initial Catalog=Dialtech;Data Source=rbook";
> >     cn->LoginPrompt = false;
> >     cn->Connected = true;
> >     for(i = 0;i<100;i++)
> >     {
> >         TADOQuery *x = new TADOQuery(NULL);
> >         x->Connection = cn;
> >         x->SQL->Text = "SELECT * FROM USUARIOS";
> >         x->Prepared = true;
> >         x->Open();
> >         Sleep(50);
> >         x->Close();
> >         delete x;
> >         Application->ProcessMessages();
> >     }
> >
> > }
> >
>
//--------------------------------------------------------------------------
> > -
> >
> > void __fastcall TForm1::Button2Click(TObject *Sender)
> > {
> >     int i;
> >     for(i = 0;i<100;i++)
> >     {
> >         TQuery *x = new TQuery(NULL);
> >         x->DatabaseName = "db";
> >         x->SQL->Text = "SELECT * FROM USUARIOS";
> >         x->Prepared = true;
> >         x->Open();
> >         Sleep(50);
> >         x->Close();
> >         delete x;
> >         Application->ProcessMessages();
> >     }
> > }
> >
> >
> > button 1: 100 queries dinamically created using ADO
> > button 2: 100 queries dinamically created using BDE.
> >
> > Running the to portions I have noted:
> >
> > ADO: Memory allocated initially: ~8MB
> >             Memory after 100 queries: 12.5MB
> >
> > BDE: Memory allocated initially: ~8MB
> >         Memory after 100 queries: ~8MB
> >
> > And more: BDE is faster and uses less processor time
> >
> > I�m using BCB5 but tested on BCB6 with same results.
> >
> > All upddates available was installed;
> >
> > I�m doing something wrong with ADO ???????????
> >
> > Thanks a lot.
> >
> >
> > Roberto
> >
> >
>
>
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From: "Roberto" <roberto@dialtech.com.br>
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Subject: Re: ADO really leaks memory !!!
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