Roman Rokytskyy wrote:

>>It runs on this host(10.10.10.18). Even more, my daemon writen in C++
>>works from that host with the same database.
>>
>>
>
>Then I have no idea.
>
>I still suspect that this is a network problem. Try to build driver
>from the source (use Branch_1_0) and add some logging into
>org.firebirdsql.jgds.GDS_Impl.java (especiall in isc_attach_database
>and connect methods).
>
>On what port your database is running? If this is not 3050, did you
>specify the port in connection string?
>
>Best regards,
>Roman
>
>

Thank you.

It was a really network problem and it is solved already. There was an
incomplete host definition in /etc/hosts.
I do not know why, but it was not working till we set short host alias
"sql":
10.10.10.18 sql.office.fe.ua sql