A method and system are provided for continuously maintaining replicas of an active database in a backup system for disaster recovery purposes. Redo records transmitted from an active system are received into a dataspace work area in a backup system memory. Redo records in the work area for an uncommitted...http://www.google.de/patents/US5640561?utm_source=gb-gplus-sharePatent US5640561 - Computerized method and system for replicating a database using log records
