| 摘要 |
PURPOSE:To shorten the recovery time of a data base by providing a journal selecting means which reads a journal regarding the same data base page out of a loop continuously in time-series order. CONSTITUTION:The journal regarding the same data base page is taken out of the pool by the journal selecting means 9 continuously in the time-series order. The journal regarding the same data base page is sent to an input/output buffer 3 in the time-series order (successively from the head) to make a recovery regarding the data base page, so the data base is never misrecovered. Further, input/output operation of the data base input/output buffer 3 is performed only once for each page. Consequently, the number of times of the input and output of data base pages is decreased to shorten the recovery time. |
