Patent ID: 6801921
Filing Date: 2004-10-05
Classification: G06F,Y10S

Abstract:
A method of managing a plurality of databases in response to continuous transactions, the databases including at least a first database, a second database and a third database, comprising:simultaneously maintaining first data in the first database and a duplicate set of second data in the second database in response to database transactions; determining a point in time for a predetermined database management task; discontinuing the database transactions to and from the second database; continuing the database transactions to and from the first database; rolling back the second data in the second database to the point in time; connecting the second database to the third database; extracting a portion of the rolled back second data; updating the third data in the third database based upon the extracted from the second database; rolling forward the second data in the second database to match the first data in the first database; and resuming the database transactions to and from the second database.