Patent
1994-03-10
1997-12-09
Kulik, Paul V.
39518218, G06F 1730
Patent
active
056969678
ABSTRACT:
A log data management system is used with a database processing system. The log data management system has a plurality of database update units coupled to a database through a common bus. Each of the database update units updates a resource of the database and records log data as an update record. The database update unit writes log data of the resource of the database in a local memory in order of update time of the resource. After the resource has been updated, the database update unit transfers the log data written in the local memory to the common memory. At this time, since the database update unit does not free the resource until the log data is non-volatilized in the common memory, log data are successively stored in the common memory in order of the update time of the resource. When a failure takes place in a resource of the database, log data stored in the common memory are referred to and thereby the resource is quickly closed and recovered.
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Hayashi Katsumi
Hayashi Tomohiro
Senoo Tomoshige
Ura Mitsuhiro
Fujitsu Limited
Kulik Paul V.
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