摘要:
A recovery of a secondary DB is executed by a log including a update difference of a primary DB, and a command is executed by adding the command to the log and analyzing the log by a secondary site. An operation command execution in the secondary site is applied to the DB having the consistency in the transaction at the same timing as a primary site or an intended timing, by transferring and executing the operation command via the log. In the case that the command is constituted by a snap shot generating instruction, a plurality of volumes of a mirror set forming a secondary storage apparatus are set to a pair state and the secondary DB is written in each of the volumes and synchronized, and the mirror set is set to a split state after the synchronization is finished, whereby a secondary DB is stored.
摘要:
A technology capable of preventing a problem which occurs when log writing of a preceding transaction fails while reducing waiting time of a subsequent transaction is provided. A database control method for releasing locking of data held by a transaction upon reception of a transaction completion instruction from an operation terminal or the like by a database is provided. The database includes an exclusive control module, a log output module, and a log buffer. The log output module stores a transaction completion log in the log buffer upon reception of the transaction completion instruction from the operation terminal. The exclusive control module releases locking held by the transaction upon reception of storage of the transaction completion log in the log buffer.
摘要:
In a DR system, from the viewpoint of device cost, when search is not carried out, a physical application where log recovery is available by inexpensive DB appliance server is adopted. Further, a local mirror operation at a secondary site is not carried out. Furthermore, from the viewpoint of operation, by a log apply function unit, the tendencies of a log application and operations are monitored, and a search process is accepted according to the progress conditions of the log application. When the log application does not catch up sufficiently, the search is not accepted. Moreover, when a consistency guarantee of a secondary DB is made, not transactions in process at the moment of search instruction are undone (rolled back), but only transactions in process at the moment of a search instruction are redone (rolled forward).
摘要:
An equipment inspection support system, equipment inspection support method, and program includes a maintenance and inspection management unit for selecting and transmitting to a terminal device inspection item contents stored in a contents storage unit, and receiving the inspection result data transmitted from the terminal device; a timing determination unit for determining status information acquisition timing by the status information acquisition device based on inspection item contents transmitted to the terminal device by the maintenance and inspection management unit and the inspection result data transmitted from the terminal device; a status information acquisition unit for collecting status information acquired by the status information acquisition device according to the status information acquisition timing determined by the timing determination unit; a result data control unit for creating a result data correspondence table for associating the inspection result data received by the maintenance and inspection management unit and the status information collected by the status information acquisition unit; and an inspection result storage unit for storing the inspection result data, status information and result data correspondence table.
摘要:
An equipment inspection support system, equipment inspection support method, and program therefor are disclosed. The system includes a maintenance and inspection management unit for selecting and transmitting to a terminal device inspection item contents stored in a contents storage unit, and receiving the inspection result data transmitted from the terminal device; a timing determination unit for determining status information acquisition timing by the status information acquisition device based on the inspection item contents to be transmitted to the terminal device by the maintenance and inspection management unit and the inspection result data transmitted from the terminal device; a status information acquisition unit for collecting status information acquired by the status information acquisition device according to the status information acquisition timing determined by the timing determination unit; a result data control unit for creating a result data correspondence table for associating the inspection result data received by the maintenance and inspection management unit and the status information collected by the status information acquisition unit; and an inspection result storage unit for storing the inspection result data, status information and result data correspondence table.
摘要:
A backup system includes a first storage device having first storage areas in which an update log of recorded data is stored; a second storage device having second storage areas which are paired with the first storage areas respectively and in which a copy of the update log is stored; and a disk controller. The state of a pair of first and second storage areas is changed from a non-pair state in which the update log is not stored in the pair of first and second storage areas to a pair state. The state of another pair of first and second storage areas is changed from a pair state to a non-pair state. The disk controller includes first and second disk controllers for controlling the first and second storage devices, respectively. The changes of pair/non-pair states are executed by the first disk controller.
摘要:
A mediation computer accepts service linkage request condition information, which indicates a service linkage condition and requests service linkage, from a first service providing computer and accepts service linkage permission condition information, which indicates a condition for permitting service linkage, from a second service providing computer. The mediation computer generates a linkage service list, which shows a combination of services that can be linked, on the basis of the accepted service linkage request condition information and service linkage permission condition information. It becomes possible to provide a user with linkage service including a plurality of combined services by which both of the user and the servicer can request merits.
摘要:
It is an object to eliminate possibilities in which newest backup data cannot be created owing to overwriting of data update records when performing backup using a duplicating system. The data backup system, including an active system as a computer system of a backup source and a standby system as a computer system of a backup destination, is provided in such that a communication settings judging section is provided in the standby system for actively changing settings of a data communicating section for transferring data update records to thereby prevent overwriting of portions among data update records that are necessary for creating newest backup data.
摘要:
In a fuel vapor purge system, a diagnosis section inclusive of a fuel tank is pressurized from the generation of fuel vapor in the fuel tank has been finished after an operation of an engine was stopped, and the diagnosis is performed based on a pressure in the diagnosis section.
摘要:
A dialogue system, a dialogue method, and a recording medium storing a computer program are provided for allowing a third party to assist effectively a plurality of dialogues, without causing a sense of discomfort to the users. In a dialogue system for performing automatic answering to a voice, a dialogue assistance apparatus is provided that is connected in a state permitting transmission and reception of data. The dialogue assistance apparatus performs the following operations of suspending a dialogue when the dialogue is not established meaningfully; displaying a plurality of recognition candidates for an utterance received last in the dialogue suspended by the dialogue suspending means; receiving one recognition candidate selected from a plurality of the candidates; and sending out the selected candidate. When the one candidate is received from the dialogue assistance apparatus, the dialogue is resumed according to the dialogue scenario information starting at the portion having been suspended.