| 摘要 |
PURPOSE:To restart at high speed from the trouble in a system by closing all blocks required for the recovery of data during the restart from the trouble in the system and performing a recovery processing in parallel with a transaction to process data which is not closed. CONSTITUTION:There are provided a closing release means 5 for deleting block closing information on a closing information storage area 9 after the completion of the recovery of the data by a recovery means 2 and a recovery control means 1 for controlling a sequence of the data recovery processing for restarting the transaction after the block is closed, releasing the closing of the block after the completion of the recovery of the data and taking a log by a log writing means 17 during the start of the recovery of the data and the completion of the recovery of the data in preparation for the case when the system is brought into the trouble during the data recovery processing. Thereby, during the restart from the trouble in the system, after all the blocks requiring for the recovery of the data are closed, the restart of the transaction is carried out, the transaction is performed in parallel with the recovery processing and the data which requires no recovery of the data and is not closed can be processed. |
