External: SIGSEGV error
lazarus / 16-Databases

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Conte · 2021-09-24 21:04

I have a form and a datamodule.
I am making a connection to a local oracle db and showing the result
to a dbgrid.
I am using Zeos connection.
When I compile i have no errors, when I run a "select" i have this
error back:

(https://i.postimg.cc/J0HfCn8f/Cattura.png)



Is the problem oracle? I have switched to Lazarus to enjoy zeos
connection cause on Delphi community I don't have oracle driver for
free. A good reason to know lazarus but on Delphi it was working 

This is the code:
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i unit
form1; {$mode objfpc}{$H+} interface uses  Classes, SysUtils, Forms,
Controls, Graphics, Dialogs, DBGrids, StdCtrls,  datamodule1; type   {
TLogin }   TLogin = class(TForm)    Button1: TButton;    DBGrid1:
TDBGrid;    procedure Button1Click(Sender: TObject);  private  
public   end; var  Login: TLogin; implementation {$R *.lfm} { TLogin
}   procedure TLogin.Button1Click(Sender: TObject);begin 
 oraclemng.ZQuery1.sql.Add('select * from help'); 
 oraclemng.zquery1.open;end; end. 
This is the line going in error:
oraclemng.ZQuery1.sql.Add('select * from help');
oraclemng.zquery1.open;

[Edited to fix the code tags - please read How to use the Forum.]

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loaded · 2021-09-25 07:21

I think that your query structure will be similar to this one, and it
will help you overcome some problems.

Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i   if
ZConnection1.Connected then  begin    try      ZQuery1.SQL.Clear;    
ZQuery1.SQL.Add('select * from help');      Zquery1.ExecSQL;   
except      on E: Exception do  ShowMessage(E.ClassName+' --> Error :
 '+E.Message);    end;  end  else  begin  Showmessage('Database Not
Connected');  end;

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Conte · 2021-09-26 16:18

Solved adding Application.CreateForm(TDataModule1, DataModule1); in
the project lpr file.