Data availability in restartable data base system

Details Data availability in restartable data base system Data availability in restartable data base system

1985-10-29

1992-10-13

MacDonald, Allen R.

Boots, shoes, and leggings

3642821, 364268, 364264, 364DIG1, 395600, G06F 1108

Patent

active

051556782

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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