> I receive that error. Anyone knows what thas it mean?

No such error exists, but I presume that is a typo (such presumptions
would not be necessary if you provided more detail - such as the error
message that accompanies the error, what you were doing at the time
the error was received, whether you are using IBO, what version of
IBO, etc etc etc.)

I am guessing you actually mean 335544344, which from IB/FB manual
expresses as:

isc_io_error 335544344L I/O error during “<string>” operation for
file “<string>”


This error can be received in several circumstances, the most common
is providing an incorrect database file name when trying to connect.

--
Geoff Worboys
Telesis Computing