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US Patent 6980988 - Method of applying changes to a standby database system
US Patent Issued on December 27, 2005
Estimated Patent Expiration Date:
October 1, 2022Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
October 1, 2022Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA method for applying changes to a standby system is described in which multiple apply tasks or “slaves” are scheduled to changes from redo logs, especially those changes in large transactions, in parallel and as soon as they are encountered in the logs. To foster data convergence, a partial ordering may be imposed on the transactions so that those transactions that actually depend on others are forced to wait on the transactions they are dependent upon commit. To foster read consistency, synchronization points may be periodically established, at which points a read consistent state of the standby database system can be obtained-all without adversely impact the throughput of the system.Other References
| InventorsApplicationNo. 10260547 filed on 10/01/2002US Classes:707/8, Concurrency (e.g., lock management in shared database)707/201, Coherency (e.g., same view to multiple users)707/202, Recoverability707/204Archiving or backupField of Search707/103Z, Object-oriented database structure reference707/103R, Object-oriented database structure707/101, Manipulating data structure (e.g., compression, compaction, compilation)707/104.1, Application of database or data structure (e.g., distributed, multimedia, image)707/102, Generating database or data structure (e.g., via user interface)707/100, DATABASE SCHEMA OR DATA STRUCTURE707/103Y, Object-oriented database structure processing707/103X, Object-oriented database structure network707/200, FILE OR DATABASE MAINTENANCE707/201, Coherency (e.g., same view to multiple users)707/202, Recoverability707/203, Version management707/204, Archiving or backup707/205File allocationExaminersPrimary: Mizrahi, Diane D.Attorney, Agent or FirmUS Patent References5170480, Concurrently applying redo records to backup database in a log sequence using single queue server per queue at a timeIssued on: 12/08/1992 Inventor: Mohan, et al.5530855, Replicating a database by the sequential application of hierarchically sorted log records Issued on: 06/25/1996 Inventor: Satoh, et al.6205449, System and method for providing hot spare redundancy and recovery for a very large database management system Issued on: 03/20/2001 Inventor: Rastogi, et al.6289357Method of automatically synchronizing mirrored database objects Issued on: 09/11/2001 Inventor: Parker International ClassG06F017/30 |
