> It works fine for a hundred of insert of records and then I get the
> following error:
>
> org.firebirdsql.jdbc.FBSQLException: Resource Exception. Unable to
> complete network request to host "192.168.0.25".
> Reason: Unable to complete network request to host "192.168.0.25".

Most likely your server crashes. Can you check log file of the
database server itself? If that's the reason, can you prepare a
reproducable test case, so that the fix hopefully comes into Firebird
1.5.1.

Roman