Method and apparatus for reorganizing an on-line database system

Details Method and apparatus for reorganizing an on-line database system Method and apparatus for reorganizing an on-line database system

1995-06-01

1997-01-21

Amsbury, Wayne

Boots, shoes, and leggings

395494, 39518205, 39518213, 364DIG1, 3642821, 3642834, 3642514, G06F 1730, G06F 1200

Patent

active

055967477

ABSTRACT:
A database operation control system includes a database checker, a database saver, a database diagnoser, a logical image creator, a database creator, and a database restorer. The database checker checks an access time taken for retrieval processing, and records an access time increase in an access time record file. The database saver saves data from the database to a save file. The database diagnoser compares the access time increase with a reorganization start increase as a reference value obtained from the access time record file to diagnose whether recognition is necessary, and informs the database saver of the necessity of the execution of reorganization processing of the database, if it is determined that reorganization is required. The logical image creator decomposes data of the save file into logical units to create logical images, and stores them in a logical image file. The database creator creates a restoration file. The database restorer restores data from the restoration file to the database. Reorganization processing is automatically performed in accordance with the access time increase obtained by the database checker.

REFERENCES:
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patent: 4807224 (1989-02-01), Naron
patent: 5222233 (1993-06-01), Parks
patent: 5333311 (1994-07-01), Whipple, II
patent: 5408654 (1995-04-01), Barry
ACOS Software ACOS-4/MVP XE ADBS Operation Guide, Published by NEC Corporation, (Oct. 1990).

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