Method and system for use in an on-line database system for dyna

Details Method and system for use in an on-line database system for dyna Method and system for use in an on-line database system for dyna

1992-03-26

1995-12-26

Black, Thomas G.

Boots, shoes, and leggings

395822, 395845, 395281, 395375, 364DIG1, 3642451, 36424531, 3642822, G06F 1204, G06F 1300

Patent

active

054796555

ABSTRACT:
A dynamic file expansion method and system for on-line database systems is provided. When an empty space of a file becomes insufficient, the file is dynamically expanded asynchronously with a record input/output process relative to an already existing space, by using another process while continuing the record input/output process. Jobs are not therefore intercepted and adversely affected by insufficient empty space of the file. In the structure of the method and system, a file expansion timing detecting section monitors the remaining empty space of a file with the help of a record input/output processing section. When the remaining empty space becomes equal to or less than a predetermined space registered in a file expansion information registering section, a dynamic file expansion is requested to an asynchronous file expanding section. The asynchronous file expanding section generates new space management information using a process different from the process executed by the record input/output processing section, to execute a space expanding process and an expanded space initializing process.

REFERENCES:
patent: 4020466 (1977-04-01), Cordi
patent: 4189773 (1980-02-01), O'Meara
patent: 4258418 (1981-03-01), Heath
patent: 4445170 (1984-04-01), Hughes
patent: 5226141 (1993-07-01), Ebenson

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