William,

in addition to that whas helen wrote it's very importend that you
create the TIB_Connection, Session and Transaction Object not in the
constructor of your Threadobject but instead in the execute methode
of the Threadobject. The Constructor runs in the same address space
like the main thread.

Regards
Gerhard

--- In IBObjects@yahoogroups.com, Helen Borrie <helebor@t...> wrote:
> At 12:02 PM 28/06/2004 +0000, you wrote:
> >I have seen some posts on this subject.
> >1. I need an explisit session.
> >2. prorocol : cpTCP_IP
> >3. Server : 127.0.0.1
> >
> >This code is inside the constructor of the thread. What is missing
> >please.
> >
> > FSession := TIB_Session.Create(nil);
>
> > FConnection := TIB_Connection.CreateForSession(nil,FSession);
>
> Don't use CreateForSession: it has another purpose. And don't use
nil
> owners for anything but the TIB_Session.
> FConnection := TIB_Connection.Create(FSession);
>
> > FConnection.Protocol := cpTCP_IP;
> > FConnection.Server := '127.0.0.1';
>
> not
> > FQuery := TIB_Query.CreateForSession(nil,FSession);
>
> but
> FQuery := TIB_Query.Create(FSession);
>
> > FQuery.IB_Connection := FConnection;
>
> Either
> FQuery.IB_Transaction := FConnection.ib_transaction;
>
> or, better, declare an explicit IB_Transaction (FTransaction :=
> TIB_Transaction.Create(FSession);
> FTransaction.[..........properties...........]
> FTransaction.IB_Connection := FConnection;
>
> then
> FQuery.IB_Transaction := FConnection;
>
> > FConnection.DatabaseName := 'c:\test.gdb';
>
> Wrong here. You want
>
> FConnection.Path := 'c:\test.gdb';
>
> (DatabaseName would be '127.0.0.1:c:\test.gdb' but IBO doesn't need
it)
>
> > FConnection.Username := 'SYSDBA';
> > FConnection.Password := 'masterkey';
> > FConnection.Connect;
> >
> >The thread breaks on the fquery.execute line.
>
> Something is missing here:
> with FQuery do
> begin
> if not IB_Transaction.Started then
> ib_Transaction.StartTransaction;
> SQL.Add('a statement');
> if not Prepared then Prepare;
> Params[n].AsWhatever := something;
> ...
> Execute;
> end;
>
> What are you executing? TIB_Query is for SELECT statements. Use
> TIB_Cursor or TIB_DSQL for executable statements.
>
> >When I create only one thread the code works fine.
>
> What happens when subsequent threads run?
>
> Helen