Method for recovering a database provided with disk back-up

Data processing: database and file management or data structures – Database design – Data structure types

Reexamination Certificate

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C707S793000

Reexamination Certificate

active

06865584

ABSTRACT:
The invention relates to a method for recovering a database provided with disk backup. A database comprising a first generation and at least one mature generation is maintained in a central memory. The generations contain memory cells in which data and additionally pointers constituting references between memory cells are stored. Generation-specific remembered sets are maintained in the area of mature generations in the central memory. Live memory cells in the area of the first generation are periodically collected as a new mature generation into the central memory into the area of mature generations. Garbage collection is performed generationally in the area of mature generations, in which live memory cells are copied in the order indicated by the remembered set into a temporally more recent mature generation.

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patent: 5581750 (1996-12-01), Haderle et al.
patent: 0790558 (1997-08-01), None
patent: 62050938 (1987-03-01), None
“Extended Ephemeral Logging: Log Storage Management For Applications With Long-lived Transactions,” John S. Keen, Silicon Graphics and William J. Dally, Massachusetts Institute For Technology; ACM Transactions On Database Systems, vol. 22, No. 1, Mar. 1997, pp. 1-42.
“Atomic Garbage Collection: Managing A Stable Heap,” E. Kolodner, B. Liskov, and W. Weihl; Laboratory For Computer Science, Massachusetts Institute For Technology, Cambridge MA 02139, 1989 ACM, pp. 15-25.

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