Data availability in restartable data base system
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United States of America Patent
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Oct 13, 1992
Grant Date -
N/A
app pub date -
Oct 29, 1985
filing date -
Oct 29, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for maintaining switchover between a backup and degrading active processor, which switchover is transparent to a terminal accessing the active processor with atomic transactions. The backup processor prepares for an outage by the active processor by synchronizing, tracking, and monitoring the active processor's log entries. When the active processor fails, the backup processor performs the necessary recovery processing and takes over user-transactions processing as the new active processor.
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