I find one solition for that

SELECT RDB$USER
FROM RDB$USER_PRIVILEGES
group by
1

--- In firebird-support@yahoogroups.com, Milan Babuskov <milanb@...> wrote:
>
> Ahmet Nuri D wrote:
> > Hi, I want to list firebird user. can I do that?
>
> Start Firebird gsec tool with "-display" switch.
>
> Example on my Linux box:
>
> $ gsec -display -database srv:/opt/firebird/security2.fdb -user sysdba
> -pass masterkey
>
> user name
> ----------------------------------
> SYSDBA
> MILANB
>
>
> Regards,
>
> --
> Milan Babuskov
>
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