公开(公告)号：GB2361780A

公开(公告)日：2001-10-31

申请号：GB0009989

申请日：2000-04-26

Applicant: IBM

Inventor： KETTLEY PAUL ,  MILLAR ROBERT D ,  SIDDALL PETER

IPC: G06F11/14 ,  G06F9/46

Abstract: A computer system has a recovery log to log records relating to units of work being performed by the computer system. The system logs records relating to the units of work in the recovery log in a series of log files. Those units of work that span more than a predetermined number of log files in the recovery log are identified as old units of work. A log restart record is entered into a log restart file for each of the units of work identified as old, the log restart record comprising a key identifying the unit of work and recovery information sufficient to allow the unit of work to be completed. The computer system is restarted following an interruption by establishing from the recovery log records the state of all currently active units of work, performing recovery activity for each old active unit of work based on the log restart records, and performing recovery activity for each of the remaining active units of work based on the recovery log records.

公开(公告)号：CA2141282A1

公开(公告)日：1995-09-22

申请号：CA2141282

申请日：1995-01-27

Applicant: IBM

Inventor： LAI ROBERT S ,  MILLAR ROBERT D ,  RADKE HARRY O

IPC: H04L29/06 ,  G06F17/60

Abstract: A transaction processing system, adapted for use in a computer system having a host computer running applications and user terminals connected to the host computer,determines the transaction attributes for each transaction received by the host computer and dynamically associates a transaction protocol to be used in processing that particular transaction. The transaction protocol specifies such attributes as synchronization paradigm and flow control. The synchronization paradigm and flow control are used only for as long as the transaction remains in the system and are used only for that transaction.