US5696967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Log data management system having a plurality of processing units and a common memory
Assignee: Fujitsu Ltd
•
Filing: 1994-03-10
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Granted: 1997-12-09
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Expires: 2014-03-10
Abstract
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.
Inventors
- 👤 Katsumi Hayashi
- 👤 Tomohiro Hayashi
- 👤 Mitsuhiro Ura
- 👤 Tomoshige Senoo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:21
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/14; G06F11/1471
Claims Analysis
Total Claims: 52
Claim 1
Independent Claim
91 words
A log data management method including a plurality of database update units, each of said database update units being adapted to access a database through a common bus, exclusively update a resource of said database, and get log data as an update data, said method comprising steps of: getting said log data; and storing said log data to a non-volatile common area in order of update time of said resource when said resource is released after said resource has been updated, said common area being shared by said database update units.
Claim 2
Dependent Claim
91 words
A log data management method including a plurality of database update units, each of said database update units being adapted to access a database through a common bus, exclusively update a resource of said database, and get log data as an update data, said method comprising steps of: getting said log data; and storing said log data to a non-volatile common area in order of update time of said resource when said resource is released after said resource has been updated, said common area being shared by said database update units.
Claim 3
Dependent Claim
48 words
The log data management method as set forth in claim 1, further comprising steps of: acquiring an exclusive use right of said resource before said resource is updated; and discarding said exclusive use right of said resource after said log data has been stored in said common area.
Claim 4
Dependent Claim
129 words
A log data management method including a plurality of database update units, each of said data-base update units being adapted to access a database through a common bus, exclusively update a resource of said database, and get log data as an update data, said method comprising steps of: getting said log data; storing said log data to a first common area in order of update time of said resource after said resource has been updated, said first common area being shared by said database update units; compressing said log data stored in said first common area; and storing the compressed log data to a second common area when said resource is released, said second common area being shared by said database update units and non-volatilizing the compressed log data.
Claim 5
Dependent Claim
129 words
A log data management method including a plurality of database update units, each of said data-base update units being adapted to access a database through a common bus, exclusively update a resource of said database, and get log data as an update data, said method comprising steps of: getting said log data; storing said log data to a first common area in order of update time of said resource after said resource has been updated, said first common area being shared by said database update units; compressing said log data stored in said first common area; and storing the compressed log data to a second common area when said resource is released, said second common area being shared by said database update units and non-volatilizing the compressed log data.
Claim 6
Dependent Claim
49 words
The log data management method as set forth in claim 3, further comprising steps of: acquiring an exclusive use right of said resource before said resource is updated; and discarding said exclusive use right of said resource after said log data has been stored in said second common area.
Claim 7
Dependent Claim
90 words
A log data management method including a plurality of database update units, each of database update units being loosely coupled and being adapted to access a database, exclusively update a resource of said database, and get log data as an update data, said method comprising steps of: getting said log data; and storing said log data to a non-volatile common area in order of update time of said resource when said resource is released after said resource has been updated, said common area being shared by said database update units.
Claim 8
Dependent Claim
90 words
A log data management method including a plurality of database update units, each of database update units being loosely coupled and being adapted to access a database, exclusively update a resource of said database, and get log data as an update data, said method comprising steps of: getting said log data; and storing said log data to a non-volatile common area in order of update time of said resource when said resource is released after said resource has been updated, said common area being shared by said database update units.
Claim 9
Dependent Claim
62 words
A log data management method for recording log data of a database accessed by a plurality of systems, comprising steps of: getting said log data of said database shared by said systems when said database has been exclusively updated; and writing said log data to a non-volatile common memory in order of update time of said database when said database is released.
Claim 10
Dependent Claim
62 words
A log data management method for recording log data of a database accessed by a plurality of systems, comprising steps of: getting said log data of said database shared by said systems when said database has been exclusively updated; and writing said log data to a non-volatile common memory in order of update time of said database when said database is released.
Claim 11
Dependent Claim
85 words
A log data management method for recording log data of database accessed by a plurality of systems, comprising steps of: getting log data of said database shared by said systems when said database has been exclusively updated; writing said log data to a volatile common memory in order of update time of said database; buffering said log data gotten by said systems in a lump thereby increasing space efficiency; and writing the buffered log data to a non-volatile log file when said database is released.
Claim 12
Dependent Claim
85 words
A log data management method for recording log data of database accessed by a plurality of systems, comprising steps of: getting log data of said database shared by said systems when said database has been exclusively updated; writing said log data to a volatile common memory in order of update time of said database; buffering said log data gotten by said systems in a lump thereby increasing space efficiency; and writing the buffered log data to a non-volatile log file when said database is released.
Claim 13
Dependent Claim
110 words
A database recovering method for recovering a defective resource of a database with log data, said log data being gotten as an update data by a plurality of database update units that access said database through a common bus when said database update units exclusively update said resource, said database recovering method comprising steps of: storing said log data in a non-volatile common area shared by said database update units in order of update time of said resource when said resource is released before a failure takes place in said resource; and recovering said defective resource with said log data stored in said common area when said failure takes place.
Claim 14
Dependent Claim
110 words
A database recovering method for recovering a defective resource of a database with log data, said log data being gotten as an update data by a plurality of database update units that access said database through a common bus when said database update units exclusively update said resource, said database recovering method comprising steps of: storing said log data in a non-volatile common area shared by said database update units in order of update time of said resource when said resource is released before a failure takes place in said resource; and recovering said defective resource with said log data stored in said common area when said failure takes place.
Claim 15
Dependent Claim
88 words
A computer-readable storage medium, when used by a database processing system including a plurality of computers being adapted to access a database through a common bus, exclusively update a resource of said database and get log data as an update data, used to perform the functions of: getting said log data; and storing said log data to a non-volatile common area in order to update time of said resource when said resource is released after said resource has been updated, said common area being shared by said computers.
Claim 16
Dependent Claim
88 words
A computer-readable storage medium, when used by a database processing system including a plurality of computers being adapted to access a database through a common bus, exclusively update a resource of said database and get log data as an update data, used to perform the functions of: getting said log data; and storing said log data to a non-volatile common area in order to update time of said resource when said resource is released after said resource has been updated, said common area being shared by said computers.
Claim 17
Dependent Claim
107 words
A log data management system for use with a database processing system having a plurality of processing units linked by a common bus, said processing units being adapted to exclusively update a resource and to get log data as an update data, said log data management system comprising: a database for storing said resource; and common memory means of a non-volatile type, for storing said log data obtained by said processing units in order of update time of said resource after said resource has been updated by one of said processing units, said log data being non-volatilized in said common memory means when said resource is released.
Claim 18
Dependent Claim
107 words
A log data management system for use with a database processing system having a plurality of processing units linked by a common bus, said processing units being adapted to exclusively update a resource and to get log data as an update data, said log data management system comprising: a database for storing said resource; and common memory means of a non-volatile type, for storing said log data obtained by said processing units in order of update time of said resource after said resource has been updated by one of said processing units, said log data being non-volatilized in said common memory means when said resource is released.
Claim 19
Dependent Claim
33 words
The log data management system as set forth in claim 10, wherein said common memory means is storing means having a control data area by which accesses from said processing units are controlled.
Claim 20
Dependent Claim
41 words
The log data management system as set forth in claim 10, wherein said one of said processing units is adapted not to permit other processing units to use said resource until said log data is stored in said common memory means.
Claim 21
Dependent Claim
158 words
A log data management system having a plurality of database update units linked with a database through a common bus, said database update units being adapted to exclusively update a resource of said database and to get log data as an update data, said log data management system comprising: common memory means of a non-volatile type, linked with said database update units, wherein each of said database update units comprises: local memory means for storing said log data in order of update time of said resource; and log data transferring means for transferring said log data stored in said local memory means to said common memory means after said resource has been updated, and wherein said common memory means is adapted to store said log data transferred from said database update units in order of update time of said resource in a lump, said log data being non-volatilized in said common memory means when said resource is released.
Claim 22
Dependent Claim
158 words
A log data management system having a plurality of database update units linked with a database through a common bus, said database update units being adapted to exclusively update a resource of said database and to get log data as an update data, said log data management system comprising: common memory means of a non-volatile type, linked with said database update units, wherein each of said database update units comprises: local memory means for storing said log data in order of update time of said resource; and log data transferring means for transferring said log data stored in said local memory means to said common memory means after said resource has been updated, and wherein said common memory means is adapted to store said log data transferred from said database update units in order of update time of said resource in a lump, said log data being non-volatilized in said common memory means when said resource is released.
Claim 23
Dependent Claim
34 words
The log data management system as set forth in claim 13, wherein said common memory means is storing means having a control data area by which accesses from said database update units are controlled.
Claim 24
Dependent Claim
42 words
The log data management system as set forth in claim 13, wherein each of said database update units is adapted not to permit other database update units to use said resource until said log data is stored in said common memory means.
Claim 25
Dependent Claim
113 words
A log data management system for use with a database processing system having a plurality of database update units linked with a database through a common bus, said database update units being adapted to exclusively update a resource of said database and to get log data as an update data, said log data management system comprising: common memory means for compressing and storing said log data gotten by said database update units in order to update time of said resource after said resource has been updated by one of said database update units; and log non-volatilizing means for non-volatilizing said log data stored in said common memory means when said resource is released.
Claim 26
Dependent Claim
113 words
A log data management system for use with a database processing system having a plurality of database update units linked with a database through a common bus, said database update units being adapted to exclusively update a resource of said database and to get log data as an update data, said log data management system comprising: common memory means for compressing and storing said log data gotten by said database update units in order to update time of said resource after said resource has been updated by one of said database update units; and log non-volatilizing means for non-volatilizing said log data stored in said common memory means when said resource is released.
Claim 27
Dependent Claim
35 words
The log data management system as set forth in claim 16, wherein said common memory means is volatile storing means, and wherein said log non-volatilizing means is non-volatile storing means linked with said common bus.
Claim 28
Dependent Claim
43 words
The log data management system as set forth in claim 16, wherein said one of said database update units is adapted not to permit other database update units to use said resource until said log data is non-volatilized by said log non-volatilizing means.
Claim 29
Dependent Claim
174 words
A log data management system having a plurality of database update units linked with a database through a common bus, said database update units being adapted to exclusively update a resource of said database and to get log data as an update data, said log data management system comprising: common memory means linked with said database update units; and log non-volatilizing means linked with said database update units, wherein each of said database update units comprises: local memory means for storing said log data in order to update time of said resource; and log data transferring means for transferring said log data stored in said local memory means to said common memory means after said resource has been updated, wherein said common memory means is adapted to compress and store said log data transferred from said database update units in order of update time of said resource in a lump, and wherein said lot non-volatilizing means is adapted to non-volatilize said log data stored in said common memory means when said resource is released.
Claim 30
Dependent Claim
174 words
A log data management system having a plurality of database update units linked with a database through a common bus, said database update units being adapted to exclusively update a resource of said database and to get log data as an update data, said log data management system comprising: common memory means linked with said database update units; and log non-volatilizing means linked with said database update units, wherein each of said database update units comprises: local memory means for storing said log data in order to update time of said resource; and log data transferring means for transferring said log data stored in said local memory means to said common memory means after said resource has been updated, wherein said common memory means is adapted to compress and store said log data transferred from said database update units in order of update time of said resource in a lump, and wherein said lot non-volatilizing means is adapted to non-volatilize said log data stored in said common memory means when said resource is released.
Claim 31
Dependent Claim
35 words
The log data management system as set forth in claim 19, wherein said common memory means is volatile storing means, and wherein said log non-volatilizing means is non-volatile storing means linked with said common bus.
Claim 32
Dependent Claim
42 words
The log data management system as set forth in claim 19, wherein each of said database update units is adapted not to permit other database update units to use said resource until said log data is non-volatilized by said log non-volatilizing means.
Claim 33
Dependent Claim
138 words
A database update unit for use in a database processing system having a plurality of database update units linked with a database through a common bus, said database update units being adapted to exclusively update a resource of said database and to get log data as an update data, said database update unit comprising: local memory means for storing said log data in order of update time of said resource; and log data transferring means for transferring said log data stored in said local memory means to a common memory linked with said database update units, said common memory being adapted to store said log data transferred from said data database update units in order of update time of said resource in a lump, said log data being non-volatilized in said common memory when said resource is released.
Claim 34
Dependent Claim
138 words
A database update unit for use in a database processing system having a plurality of database update units linked with a database through a common bus, said database update units being adapted to exclusively update a resource of said database and to get log data as an update data, said database update unit comprising: local memory means for storing said log data in order of update time of said resource; and log data transferring means for transferring said log data stored in said local memory means to a common memory linked with said database update units, said common memory being adapted to store said log data transferred from said data database update units in order of update time of said resource in a lump, said log data being non-volatilized in said common memory when said resource is released.
Claim 35
Dependent Claim
40 words
The database update unit as set forth in claim 22, further comprising: control means for controlling contention with other database update units, said contention taking place when said log data transferring means transfers said log data to said common memory.
Claim 36
Dependent Claim
130 words
A database update unit for use in a database processing system having a plurality of database update units linked with a database through a common bus, said database update units being adapted to exclusively update a resource of said database and to get log data as an update data, said database update unit comprising: local memory means for storing said log data in order of update time of said resource; and log data transferring means for transferring said log data stored in said local memory means to a common memory linked with said database update units, said common memory compressing and storing said log data in order of update time of said resource, and for storing the compressed log data in a log non-volatilizing area when said resource is released.
Claim 37
Dependent Claim
130 words
A database update unit for use in a database processing system having a plurality of database update units linked with a database through a common bus, said database update units being adapted to exclusively update a resource of said database and to get log data as an update data, said database update unit comprising: local memory means for storing said log data in order of update time of said resource; and log data transferring means for transferring said log data stored in said local memory means to a common memory linked with said database update units, said common memory compressing and storing said log data in order of update time of said resource, and for storing the compressed log data in a log non-volatilizing area when said resource is released.
Claim 38
Dependent Claim
40 words
The database update unit as set forth in claim 24, further comprising: control means for controlling contention with other database update units, said contention taking place when said log data transferring means transfers said log data to said common memory.
Claim 39
Dependent Claim
159 words
A log data management system having a plurality of database update units linked with a database through a common bus, a transaction taking place in said database update units, said transaction being adapted to update a resource of said database and to record log data as an update record, said log data management system comprising: common memory means of a non-volatile type, linked with said database update units, wherein each of said database update units comprises: exclusion control means for allowing said transaction to exclusively use said resource; log data getting means for allowing said transaction to get said log data in order of update time of said resource; and log writing means for writing said log data to said common memory after said resource has been updated, and wherein said exclusion control means is adapted to allow another transaction to use said resource after said log writing means has written said log data to said common memory means.
Claim 40
Dependent Claim
159 words
A log data management system having a plurality of database update units linked with a database through a common bus, a transaction taking place in said database update units, said transaction being adapted to update a resource of said database and to record log data as an update record, said log data management system comprising: common memory means of a non-volatile type, linked with said database update units, wherein each of said database update units comprises: exclusion control means for allowing said transaction to exclusively use said resource; log data getting means for allowing said transaction to get said log data in order of update time of said resource; and log writing means for writing said log data to said common memory after said resource has been updated, and wherein said exclusion control means is adapted to allow another transaction to use said resource after said log writing means has written said log data to said common memory means.
Claim 41
Dependent Claim
202 words
A log data management system having a plurality of database update units linked with a database through a common bus, a transaction taking place in said database update units, said transaction being adapted to update a resource of said database and to record log data as an update record, said log data management system comprising: common memory means linked with said database update units, wherein each of said database update units comprises: exclusion control means for allowing said transaction to exclusively use said resource; log data getting means for allowing said transaction to get said log data in order to update time of said resource; log writing means for writing said log data to said common memory after said resource has been updated; and log non-volatilizing means linked with said database update units and adapted to non-volatilize said log data, wherein said common memory means is adapted to compress said log data, and wherein said log writing means is adapted to write the compressed log data to said log non-volatilizing means, and wherein said exclusion control means is adapted to allow another transaction to use said resource after said log writing means has written said log data to said log non-volatilizing means.
Claim 42
Dependent Claim
202 words
A log data management system having a plurality of database update units linked with a database through a common bus, a transaction taking place in said database update units, said transaction being adapted to update a resource of said database and to record log data as an update record, said log data management system comprising: common memory means linked with said database update units, wherein each of said database update units comprises: exclusion control means for allowing said transaction to exclusively use said resource; log data getting means for allowing said transaction to get said log data in order to update time of said resource; log writing means for writing said log data to said common memory after said resource has been updated; and log non-volatilizing means linked with said database update units and adapted to non-volatilize said log data, wherein said common memory means is adapted to compress said log data, and wherein said log writing means is adapted to write the compressed log data to said log non-volatilizing means, and wherein said exclusion control means is adapted to allow another transaction to use said resource after said log writing means has written said log data to said log non-volatilizing means.
Claim 43
Dependent Claim
105 words
A log data management system for use with a loosely coupled database processing system having a plurality of processing units, each of said processing units being adapted to exclusively update a resource and get log data as an update data, said log data management system comprising: a database for storing said resource; and common memory means of a non-volatile type, for storing said log data gotten by said processing units in order of update time of said resource after said resource has been updated by one of said processing units, said log data being non-volatilized in said common memory means when said resource is released.
Claim 44
Dependent Claim
105 words
A log data management system for use with a loosely coupled database processing system having a plurality of processing units, each of said processing units being adapted to exclusively update a resource and get log data as an update data, said log data management system comprising: a database for storing said resource; and common memory means of a non-volatile type, for storing said log data gotten by said processing units in order of update time of said resource after said resource has been updated by one of said processing units, said log data being non-volatilized in said common memory means when said resource is released.
Claim 45
Dependent Claim
112 words
A log data management system for use with a loosely coupled database processing system having a plurality of database update units linked with a database, each of said database update units being adapted to exclusively update a resource of said database and get log data as an update data, said log data management system comprising: common memory means for compressing and storing said log data gotten by said database update units in order of update time of said resource after said resource has been updated by one of said database update units; and log non-volatilizing means for non-volatilizing said log data stored in said common memory means when said resource is released.
Claim 46
Dependent Claim
112 words
A log data management system for use with a loosely coupled database processing system having a plurality of database update units linked with a database, each of said database update units being adapted to exclusively update a resource of said database and get log data as an update data, said log data management system comprising: common memory means for compressing and storing said log data gotten by said database update units in order of update time of said resource after said resource has been updated by one of said database update units; and log non-volatilizing means for non-volatilizing said log data stored in said common memory means when said resource is released.
Claim 47
Dependent Claim
141 words
A database update unit for use in a loosely coupled database processing system having a plurality of database update units linked with a database, each of said database update units being adapted to exclusively update a resource of said database and get log data as an update data, said database update unit comprising: local inemory means for storing said log data in order of update time of said resource when said resource is updated; and log data transferring means for transferring said log data stored in said local memory means to a common memory linked with said database update units, said common memory being adapted to store said log data transferred from said database update units in order of update time of said resource in a lump, said log data being non-volatilized in said common memory when said resource is released.
Claim 48
Dependent Claim
141 words
A database update unit for use in a loosely coupled database processing system having a plurality of database update units linked with a database, each of said database update units being adapted to exclusively update a resource of said database and get log data as an update data, said database update unit comprising: local inemory means for storing said log data in order of update time of said resource when said resource is updated; and log data transferring means for transferring said log data stored in said local memory means to a common memory linked with said database update units, said common memory being adapted to store said log data transferred from said database update units in order of update time of said resource in a lump, said log data being non-volatilized in said common memory when said resource is released.
Claim 49
Dependent Claim
138 words
A database update unit for use in a loosely coupled database processing system having a plurality of database update units linked with a database, each of said database update units being adapted to exclusively update a resource of said database and get log data as an update data, said database update unit comprising: local memory means for storing said log data in order of update time of said resource when said resource is updated; and log data transferring means for transferring said log data stored in said local memory means to a common memory linked with said database update units, said common memory compressing and storing said log data in said common memory in order of update time of said resource, and for storing the compressed log data to a log non-volatilizing area when said resource is released.
Claim 50
Dependent Claim
138 words
A database update unit for use in a loosely coupled database processing system having a plurality of database update units linked with a database, each of said database update units being adapted to exclusively update a resource of said database and get log data as an update data, said database update unit comprising: local memory means for storing said log data in order of update time of said resource when said resource is updated; and log data transferring means for transferring said log data stored in said local memory means to a common memory linked with said database update units, said common memory compressing and storing said log data in said common memory in order of update time of said resource, and for storing the compressed log data to a log non-volatilizing area when said resource is released.
Claim 51
Dependent Claim
135 words
A database recovering system for recovering a failure of a database with log data, said log data being gotten as an update data by a plurality of database update units linked with said database through a common bus when a resource of said database is exclusively updated by said database update units, said database recovering system comprising: common memory means of a non-volatile type, linked with said database update units and for storing said log data gotten by said database update units in order of update time of said resource before said failure takes place, said log data being non-volatilized in said common memory means when said resource is released; and recovering means for recovering said resource with said log data stored in said common memory means when said defect takes place in said resource.
Claim 52
Dependent Claim
135 words
A database recovering system for recovering a failure of a database with log data, said log data being gotten as an update data by a plurality of database update units linked with said database through a common bus when a resource of said database is exclusively updated by said database update units, said database recovering system comprising: common memory means of a non-volatile type, linked with said database update units and for storing said log data gotten by said database update units in order of update time of said resource before said failure takes place, said log data being non-volatilized in said common memory means when said resource is released; and recovering means for recovering said resource with said log data stored in said common memory means when said defect takes place in said resource.
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USPTO Annuity & Maintenance Windows
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| 3.5 Years (Year 4) | 2000-12-08 | 2001-06-09 | 2001-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-12-08 | 2005-06-09 | 2005-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-12-08 | 2009-06-09 | 2009-12-09 | $7700.00 | Window Closed / Lapsed |