Suspension of writes to a database disk

Details Suspension of writes to a database disk Suspension of writes to a database disk

G - Physics

11

B

G11B 27/10 (2006.01) G06F 3/06 (2006.01) G11B 25/04 (2006.01) G06F 11/14 (2006.01) G06F 11/20 (2006.01)

Patent

CA 2353017

Writes to a disk by a set of application processes in a database management system are managed. The database management system provides data buffering, direct disk access and asynchronous tasks for managing the data buffering. Each application process seeking to write to the disk acquires a disk latch in SHARED mode before writing to the disk and releases the disk latch following completion of the write to the disk. A user process is able to suspend disk writes by issuing a pause command to asynchronous tasks and acquiring the disk latch in EXCLUSIVE mode. The user process resumes disk writes by issuing a resume command to the asynchronous tasks and releasing the disk latch.

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