Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Patent
1997-12-15
1999-08-03
Le, Dieu-Minh T.
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
714 20, 707202, G06F 1100
Patent
active
059319550
ABSTRACT:
An automated method is provided, in concert with applications programs, to recover data potentially lost in a database unavailable/crash or system failure, by use of an update transaction log that maintains current copies of any update to a system data base before any application program actually physically updates the system data base. The update transaction log is a temporary stored record of application transactions and the relevant data to be stored in the data base. The transaction log is a part of the application program and is operative whenever the application program is generating data which must be added to a relevant data base. If the database is unavailable, the external system update request can still be processed for the lagging update.
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AT&T Corp
Le Dieu-Minh T.
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