Computer program product and program storage device for improvin

Details Computer program product and program storage device for improvin Computer program product and program storage device for improvin

1995-06-07

1996-10-01

Black, Thomas G.

Boots, shoes, and leggings

3642821, 364285, 364DIG1, G06F 1730

Patent

active

055617980

ABSTRACT:
A system and method are provided for recovering a computerized database. During transaction processing of a database, at least one log range is tracked comprising update transaction log records. The log range has a begin value and an end value. The begin value corresponds to a log RBA location of a first access of the database by an updating transaction. The end value corresponds to a log RBA location at a commit or abort of a last updating transaction. The end value corresponds to a point when the database is designated as being read only (called pseudo open). During recovery of the database, the update transaction log records in the log range are applied to a version of the database stored in non-volatile memory.

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Harderle et al., "Apply Slow Close Process to Minimize Physical Open/Close Activities for Database Datasets", IBM Technical Disclosure Bulletin, vol. 32, No. 10B, Mar. 1990, pp. 405-407.

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