US6301589B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Replication method
Assignee: Hitachi Ltd
•
Filing: 1998-12-02
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Granted: 2001-10-09
•
Expires: 2018-12-02
Abstract
Abstract A directory system for performing replication of directory data, in which a directory server on the consumer side can reconstruct replica data using a backup kept at any point in time. Information 10 c for specifying the entry changed for the last time by replication performed by replication service 10 ′ is recorded into the replica data 9 c managed by the directory server on the consumer side. Based on this information, the replication service 10 ′ can know the entry on which next replication is to be performed. Thus, the replication service 10 ′ can recognize the difference between the master data 9 s managed by the directory server on the supplier side and the replica data 9 c , and can perform replication on this difference when only the replica data 9 c is reconstructed using the backup.
Inventors
- 👤 Yoko Hirashima
- 👤 Satoshi Kikuchi
- 👤 Hitoshi Yui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:57
CPC Classifications
H; H04; H04L; H04L67/00; H04L67/01; H04L67/10; H04L67/1095; H04L61/00; H04L61/45; H04L61/4505; H04L61/4523; H04L61/4517; Y; Y10; Y10S; Y10S707/00; Y10S707/99931; Y10S707/99938; Y10S707/99941; Y10S707/99944; Y10S707/99945; Y10S707/99951; Y10S707/99952; Y10S707/99955
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
236 words
A replication method for keeping contents of master data and contents of replica data identical to each other in a directory system, in which, a first directory server manages the master data of directory data and records and holds replication log of operations in changing said master data; one or more second directory servers each manages its replica data as a replica of said master data; and said first directory server and said one or more second directory servers are capable of being connected through a network; wherein said replication method comprises: said first directory server acquires a replication log which becomes an object of processing out of the replication log recorded and held by said first directory server, and issues a replication request that requests performing, on said replica data, the same operations as operations corresponding to the acquired replication log to said second directory server; said first directory server and the second directory server record an identifying information for specifying the replication log corresponding to said operations performed by said second directory server when said operation performed in accordance with said replication request is successful; and the identifying information recorded by said second directory server is referred to, so as to decide the replication log to be acquired, in acquiring the replication log which is to be a new object of processing from the replication log recorded and held by said first directory server.
Claim 2
Dependent Claim
236 words
A replication method for keeping contents of master data and contents of replica data identical to each other in a directory system, in which, a first directory server manages the master data of directory data and records and holds replication log of operations in changing said master data; one or more second directory servers each manages its replica data as a replica of said master data; and said first directory server and said one or more second directory servers are capable of being connected through a network; wherein said replication method comprises: said first directory server acquires a replication log which becomes an object of processing out of the replication log recorded and held by said first directory server, and issues a replication request that requests performing, on said replica data, the same operations as operations corresponding to the acquired replication log to said second directory server; said first directory server and the second directory server record an identifying information for specifying the replication log corresponding to said operations performed by said second directory server when said operation performed in accordance with said replication request is successful; and the identifying information recorded by said second directory server is referred to, so as to decide the replication log to be acquired, in acquiring the replication log which is to be a new object of processing from the replication log recorded and held by said first directory server.
Claim 3
Dependent Claim
51 words
The replication method according to claim 1 , wherein said replication server issues a directory access request that requests performing an operation of searching said identifying information, to said second directory server, so as to refer to the identifying information recorded in the replica data managed by said second directory server.
Claim 4
Dependent Claim
49 words
The replication method according to claim 2 , wherein: said replication server issues a directory access request that requests performing an operation of recording said identifying information, to said second directory server, so as to record said identifying information into the replica data managed by said second directory server.
Claim 5
Dependent Claim
69 words
The replication method according to claim 3 , wherein: even when the operations performed by said second directory server in accordance with said replication request result in failure, said replication server judges the failure as success if the failure is caused by issuing the same replication request as the replication request successively more than once, and the second servers previously received the same replication request as the replication request.
Claim 6
Dependent Claim
81 words
The replication method according to claim 2 , wherein: said second directory server performs a predefined specific operation in accordance with contents set into a predefined specific field within a directory access request received; and said replication server sets, into said specific field of said replication request, information necessary for said second directory server to perform a specific operation of recording said identifying information, so that said identifying information is recorded into the replica data managed by said second directory server.
Claim 7
Dependent Claim
34 words
The replication method according to claim 5 , wherein: said second directory server performs an operation according to said replication request and an operation of recording said identifying information, in the same single transaction.
Claim 8
Dependent Claim
80 words
The replication method according to claim 6 , wherein: said first directory server and said second directory server belong to one object class, and manage respectively entries constituting said master data and said replica data, as objects, each having one or more attributes; and said identifying information belongs to a specific object class defined in advance, and recorded into an entry managed as an object having a specific attribute defined in advance, as an attribute value of said specific attribute.
Claim 9
Dependent Claim
199 words
A replication method for maintaining contents of master data and contents of replica data in a directory system, in which, a first directory server manages the master data of directory data and maintains replication log of operations in changing said master data; a second directory server manages the replica data as a replica of said master data; and said first directory server and said second directory server are capable of being connected through a network; wherein said replication method comprises: said first directory server acquiring a replication log that becomes an object of processing from the replication log maintained by said first directory server, and issues a replication request that requests performing, on said replica data, the same operations as operations corresponding to the acquired replication log to said second directory server; said first directory server and the second directory server record an identifying information for specifying the replication log corresponding to said operations performed by said second directory server; and the identifying information recorded by said second directory server is referred to in acquiring the replication log that is to be a new object of processing from the replication log recorded and held by said first directory server.
Claim 10
Dependent Claim
199 words
A replication method for maintaining contents of master data and contents of replica data in a directory system, in which, a first directory server manages the master data of directory data and maintains replication log of operations in changing said master data; a second directory server manages the replica data as a replica of said master data; and said first directory server and said second directory server are capable of being connected through a network; wherein said replication method comprises: said first directory server acquiring a replication log that becomes an object of processing from the replication log maintained by said first directory server, and issues a replication request that requests performing, on said replica data, the same operations as operations corresponding to the acquired replication log to said second directory server; said first directory server and the second directory server record an identifying information for specifying the replication log corresponding to said operations performed by said second directory server; and the identifying information recorded by said second directory server is referred to in acquiring the replication log that is to be a new object of processing from the replication log recorded and held by said first directory server.
Claim 11
Dependent Claim
51 words
The replication method according to claim 8 , wherein said replication server issues a directory access request that requests performing an operation of searching said identifying information, to said second directory server, so as to refer to the identifying information recorded in the replica data managed by said second directory server.
Claim 12
Dependent Claim
49 words
The replication method according to claim 9 , wherein: said replication server issues a directory access request that requests performing an operation of recording said identifying information, to said second directory server, so as to record said identifying information into the replica data managed by said second directory server.
Claim 13
Dependent Claim
69 words
The replication method according to claim 10 , wherein: even when the operations performed by said second directory server in accordance with said replication request result in failure, said replication server judges the failure as success if the failure is caused by issuing the same replication request as the replication request successively more than once, and the second servers previously received the same replication request as the replication request.
Claim 14
Dependent Claim
81 words
The replication method according to claim 9 , wherein: said second directory server performs a predefined specific operation in accordance with contents set into a predefined specific field within a directory access request received; and said replication server sets, into said specific field of said replication request, information necessary for said second directory server to perform a specific operation of recording said identifying information, so that said identifying information is recorded into the replica data managed by said second directory server.
Claim 15
Dependent Claim
34 words
The replication method according to claim 12 , wherein: said second directory server performs an operation according to said replication request and an operation of recording said identifying information, in the same single transaction.
Claim 16
Dependent Claim
80 words
The replication method according to claim 13 , wherein: said first directory server and said second directory server belong to one object class, and manage respectively entries constituting said master data and said replica data, as objects, each having one or more attributes; and said identifying information belongs to a specific object class defines in advance, and recorded into an entry managed as an object having a specific attribute defined in advance, as an attribute value of said specific attribute.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-10-08 | 2005-04-09 | 2005-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-10-08 | 2009-04-09 | 2009-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-10-08 | 2013-04-09 | 2013-10-09 | $7700.00 | Window Closed / Lapsed |