Hitachi, Ltd.

Masataka Kan

Norihiro Hara

Nobuo Kawamura

Katsushi Yako

Nobuyuki Yamashita

Morihiro Iwata

Satoshi Fukuda

Tetsuya Suzuki

Tooru Kawashima

Yuuichi Suginishi

Yoshihide Sato

Mitsuo Miyazaki

Masami Hikawa

Keisuke Matsubara

Yuuji Mizote

Yuuji Hirose

An object of the invention is to quickly provide an effective recovery plan for a delay problem occurring at a manufacturing site. A dynamic production planning system includes a dynamic production planning device, and the dynamic production planning device includes a process actual result storage unit that includes a record of time spent on production for each item and process, a process plan actual result storage unit that includes a production facility of which usage is planned and assumed work time thereof for each item and process, and a recovery scenario generating unit configured to calculate, for each item and process, an index indicating a risk of a delay using the time spent on production and the production facility of which usage is planned and the assumed work time thereof for each item and process.

Dynamic production planning system and dynamic production planning device

In a system that switches multiple database servers to separate computers, a switching order of the database servers is variably changed and set. In the system that allows an executive system computer and a standby system computer having the database servers to share a database respectively, the system is switched from the database server of the executive system computer to the database server of the standby system computer. Information (order information) that indicates an order in which the system of the executive system database server is switched is registered in a storage device. The order information is changed by detection of the occurrence of an event in the executive system computer. The system switching processing is performed from the executive system database server to the standby system database server in accordance with the changed order information.

System and method for highly available data processing in cluster system

In a database management system using a shared-nothing architecture and adopting a system takeover in a DB storage area unit, correspondence information is provided which indicates a relation between a DB storage area and a DB processing server in charge of an access to the DB storage area, when a takeover occurs to some DB storage area, the correspondence information is changed in such a manner that an access process to the DB storage area is made in charge of another running DB processing server, and when some DB storage area is accessed in response to an inquiry request from a user, a DB processing server as an access request destination is determined by referring to the correspondence information.

Method for process substitution on a database management system

The present invention provides a system switching function for database management systems which requires no standby resources idling during normal operation. One aspect of the invention is directed to a method for processing databases in a system which includes a plurality of storage areas each storing a database and a plurality of computers each having a database management program running thereon which manages one of the plurality of storage areas. Each storage area is associated with only the computer managing the storage area. The method comprises, when a failure has occurred in one of the plurality of computers as a failed computer, obtaining preset substitution information indicating that the storage area managed by the database management program running on the failed computer is to be managed by the database management program running on another one of the plurality of computers as a substitute computer; and, based on the substitution information, changing association of the storage area with the failed computer to the substitute computer. The storage area is to be managed by the database management program running on the substitute computer.

Method and system for high-availability database

In display processing and input processing of multidimensional aggregate patterns, a graph including coordinate axes for displaying aggregation levels of respective dimensions is used. An aggregate pattern of each aggregate cube is displayed as a figure on the graph. By using position relations on the graph, the relation between pre-aggregate data and aggregated data is visualized. On the basis of the position relations on the graph, the user can select a pre-aggregate cube.

Method and system for displaying multidimensional aggregate patterns in a database system

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Yokohama, Japan

Masataka Kan