公开(公告)号：CA2167794A1

公开(公告)日：1996-07-24

申请号：CA2167794

申请日：1996-01-22

Applicant: TANDEM COMPUTERS INC

Inventor： LYON JAMES M ,  PEARSON STEVEN R ,  PUTZOLU FRANCO ,  MOSHER MALCOLM JR

IPC: G06F11/14 ,  G06F17/30

Abstract: An improved recovery method utilizes sequence numbers to order log records and reduce the excess compensating actions due to a failure during recovery. Next undo records are written to the log after a preset number of compensating actions which include the sequence number of the record currently being scanned. After a failure, all records between the next undo record and the record having the sequence number included in the next undo record are ignored during when the log is scanned backwards.

公开(公告)号：DE69610785T2

公开(公告)日：2001-03-29

申请号：DE69610785

申请日：1996-01-15

Applicant: TANDEM COMPUTERS INC

Inventor： LYON JAMES A ,  PEARSON STEVEN R ,  POTZOLU FRANCO

IPC: G06F11/14

Abstract: An improved recovery method utilizes sequence numbers to order log records and reduce the excess compensating actions due to a failure during recovery. Next undo records are written to the log after a preset number of compensating actions which include the sequence number of the record currently being scanned. After a failure, all records between the next undo record and the record having the sequence number included in the next undo record are ignored during when the log is scanned backwards.

公开(公告)号：DE69610785D1

公开(公告)日：2000-12-07

申请号：DE69610785

申请日：1996-01-15

Applicant: TANDEM COMPUTERS INC

Inventor： LYON JAMES A ,  PEARSON STEVEN R ,  POTZOLU FRANCO

IPC: G06F11/14

Abstract: An improved recovery method utilizes sequence numbers to order log records and reduce the excess compensating actions due to a failure during recovery. Next undo records are written to the log after a preset number of compensating actions which include the sequence number of the record currently being scanned. After a failure, all records between the next undo record and the record having the sequence number included in the next undo record are ignored during when the log is scanned backwards.