公开(公告)号：CA2353017A1

公开(公告)日：2003-01-12

申请号：CA2353017

申请日：2001-07-12

Applicant: IBM CANADA

Inventor： LI JOHN ,  HURAS MATTHEW A ,  SACHEDINA AAMER ,  ROMANUFA KERILEY K ,  SCHLAMB KELLY W ,  ZHENG ROGER L

IPC: G06F3/06 ,  G06F11/14 ,  G06F11/20 ,  G06F17/30 ,  G11B27/10 ,  G11B25/04

公开(公告)号：CA2353017C

公开(公告)日：2004-03-16

申请号：CA2353017

申请日：2001-07-12

Applicant: IBM CANADA

Inventor： SCHLAMB KELLY W ,  ZHENG ROGER L ,  HURAS MATTHEW A ,  LI JOHN ,  ROMANUFA KERILEY K ,  SACHEDINA AAMER

IPC: G06F3/06 ,  G06F11/14 ,  G06F11/20 ,  G06F17/30 ,  G11B27/10 ,  G11B25/04

Abstract: 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 i n EXCLUSIVE mode. The user process resumes disk writes by issuing a resume command to the asynchronous tasks and releasing the disk latch.