Thanks to all who replied.

The solution to the problem was to use the TCP/IP connect string:

CONNECT 'localhost:Y:/Controller/Development/db/Controller.gdb'
USER 'SYSDBA'
PASSWORD 'masterkey';


Fabrice

--- In ib-support@y..., "ibfa2000" <fabrice.aeschbacher@k...> wrote:
> Hi,
>
> (Win2000, Firebird V1.0)
>
> The same following isql script is executed successfully when
started
> interactively by a (win2000) user, but fails (SQLCODE = 904,
> unavailable database) when started as a scheduled task (with
AT.EXE).
> The task is run as the same (win2000) user.
>
> Here is the script:
>
>
CONNECT 'Y:/Controller/Development/db/Controller.gdb'
> USER 'SYSDBA'
> PASSWORD 'masterkey';
> ...
>
>
> Any idea?
>
> Thanks,
> Fabrice