Patent ID: 6567928
Filing Date: 2003-05-20
Classification: G06F,Y10S

Abstract:
A method for efficiently recovering from a failure in a database in which a first set of entries have been made with control information recovery logging, but without data recovery logging and a second set of entries have been made with both control information and data recovery logging, the method being for use in a computer system having a database management system for accessing the database, the method comprising:(a) including a status indicator field in control information log entries associated with the first set of entries; (b) setting the status indicator field to a first value when the associated data entry was made without data recovery logging and to a second value when the associated data entry was made with data recovery logging; and (c) during a recovery from a failure, marking a data entry invalid when the associated status indicator field has a first value and marking a data entry valid when the associated status indicator field has a second value.