This paper illustrates the meaning of different database recovery modes, represented by select into command, and verifies differences in redo data produced bulk operations modes with a detailed experimental procedure.

The operation of offshore wind farms is characterized by a complicated operational environment, long project cycle, and complex vessel traffic, which lead to safety hazards. To identify the key factors affecting farms, risk characteristics farm operations are analyzed based on comprehensive identification hazards assessment theory. A systematic fault tree analysis established. shows that induce...