Audit trail compaction for database recovery

Authors:
John Kaunitz;Louis van Ekert
Affiliations:
New South Wales Institute of Technology, South Wales, Australia;New South Wales Institute of Technology, South Wales, Australia
Venue:
Communications of the ACM
Year:
1984

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Abstract

Total elapsed recovery time from disk-based database corruption can be shortened by reprocessing the audit trail off-line and thereby avoiding excessive resource utilization penalties. Using a bit map, the audit trail is compacted by eliminating irrelevant or superseded records. The compacted trail is then partitioned, and the partitions are processed in parallel.