Method and system for dynamically and asynchronously expanding a

Details Method and system for dynamically and asynchronously expanding a Method and system for dynamically and asynchronously expanding a

1995-06-06

1997-02-18

Black, Thomas G.

Boots, shoes, and leggings

395822, 395845, 395281, 364DIG1, 3642821, 36424531, 3642822, G06F 1300

Patent

active

056049005

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.

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