> [GDS_Impl,DEBUG] op_response resp_object: 0
> [GDS_Impl,DEBUG] op_response resp_blob_id: 0
> [GDS_Impl,DEBUG] op_response resp_data size: 0
> [GDS_Impl,DEBUG] readStatusVector arg:isc_arg_gds int: 335544344

335544344=I/O error for file {0} "{1}"

> [GDS_Impl,DEBUG] readStatusVector string: null
> [GDS_Impl,DEBUG] readStatusVector string: null
> [GDS_Impl,DEBUG] readStatusVector arg:isc_arg_gds int: 335544734
> [GDS_Impl,DEBUG] readStatusVector string: null [GDS_Impl,DEBUG]
> op_rollback

335544734=Error while trying to open file

What does your firebird.log contain? Are there any signs of server crash?

Can it be that you reference the external file that does not exist?

Roman