Patents Examined by Maria N. Von Buler
  • Patent number: 5581750
    Abstract: A system and method are provided for recovering a computerized database. During transaction processing of a database, at least one log range is tracked comprising update transaction log records. The log range has a begin value and an end value. The begin value corresponds to a log RBA location of a first access of the database by an updating transaction. The end value corresponds to a log RBA location at a commit or abort of a last updating transaction. The end value corresponds to a point when the database is designated as being read only (called pseudo open). During recovery of the database, the update transaction log records in the log range are applied to a version of the database stored in non-volatile memory.
    Type: Grant
    Filed: March 15, 1993
    Date of Patent: December 3, 1996
    Assignee: International Business Machines Corporation
    Inventors: Donald J. Haderle, James Z. Teng