公开(公告)号：CA2206302A1

公开(公告)日：1996-08-01

申请号：CA2206302

申请日：1996-01-17

Applicant: TANDEM COMPUTERS INC

Inventor： JOHNSON CHARLES S ,  SHOROFF SRIKANTH ,  LYON JAMES M ,  CARLEY WILLIAM J ,  FINKELSTEIN SHELDON J ,  MCCLINE MATTHEW C

IPC: G06F11/18 ,  G06F11/14 ,  G06F11/34 ,  G06F12/00 ,  G06F17/60

Abstract: In one embodiment, the present invention provides a method of treating undo work for a transaction as it would treat original work. This method is used to ensure that log records have been fused to disk (22, 24) and that lost log records, if there are any, are reliably detected. The method can also determine when a newly arrived request for update has arrived too late such that aborted transactions are not operated upon. In another embodiment of the present invention, a transaction control block (40) "fault in" is utilized. Feature deals with the ability to create Transaction Control Block data structure in a CPU (12, 14), if such a structure does not already exist. A Transaction Control Block (40) provides a description for its associated transaction.

公开(公告)号：EP0806008A4

公开(公告)日：1999-12-29

申请号：EP96902160

申请日：1996-01-17

Applicant: TANDEM COMPUTERS INC

Inventor： MCCLINE MATTHEW C ,  SHOROFF SRIKANTH ,  LYON JAMES M ,  CARLEY WILLIAM J ,  JOHNSON CHARLES S ,  FINKELSTEIN SHELDON J

IPC: G06F11/18 ,  G06F11/14 ,  G06F11/34 ,  G06F12/00 ,  G06F11/00 ,  G06F17/00 ,  G06F19/00

CPC classification number: G06F11/1474 ,  G06F11/3476

Abstract: In one embodiment, the present invention provides a method of treating undo work for a transaction as it would treat original work. This method is used to ensure that log records have been fused to disk (22, 24) and that lost log records, if there are any, are reliably detected. The method can also determine when a newly arrived request for update has arrived too late such that aborted transactions are not operated upon. In another embodiment of the present invention, a transaction control block (40) 'fault in' is utilized. Feature deals with the ability to create Transaction Control Block data structure in a CPU (12, 14), if such a structure does not already exist. A Transaction Control Block (40) provides a description for its associated transaction.