公开(公告)号：JPH09204338A

公开(公告)日：1997-08-05

申请号：JP888396

申请日：1996-01-23

Applicant: TANDEM COMPUTERS INC

Inventor： JIEEMUZU EI RAIAN ,  SUTEIIBUN AARU PIASON ,  FURANKO PUTSUTOZORU

IPC: G06F12/00

Abstract: PROBLEM TO BE SOLVED: To speed up the restoration of fault in a data processing system by scanning an interrupted operation record backward from a common log at the time of the occurrence of fault and writing a corresponding compensation log entry forward in the common log. SOLUTION: The common log is formed by the log synthesis of an independent resource manager. During restoring processing, this log is scanned in backward order, and a count value is increased and the entry of the compensation log is written forward in the log for every compensation operation. When the count value becomes equal to a present value, a next AND record is written forward in the log including the record-id of the present log record in the middle of compensation. Until the recode provided with record-id in the middle of next AND recording, all the record is neglected. Consequently, the entry of the compensation log of a next ANDed record within the log is neglected to prevent exceeding AND processing.