Method and apparatus for block-level auditing and database recov

Details Method and apparatus for block-level auditing and database recov Method and apparatus for block-level auditing and database recov

1994-12-22

1997-10-28

Amsbury, Wayne

G06F 1730

Patent

active

056825277

ABSTRACT:
A transaction processing audit and recovery system is disclosed. After processing a transaction, an audit manager logs in audit records only changed blocks of data of a segment of a database. Upon failure of database backing storage, a prior copy of the database is reloaded to database backing storage that is available and a recovery manager reads the audit records and copies the changed blocks back to the database backing storage. An outboard file cache system is used in conjunction with the recovery manager to recover the database. The outboard file cache provides cache storage for segments of the database and writes non-contiguous blocks of one or more segments as directed in a single input/output request initiated from the recovery manager.

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patent: 5390318 (1995-02-01), Ramakrishman et al.
patent: 5404508 (1995-04-01), Konrad et al.
patent: 5561795 (1996-10-01), Sarkar

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