Redo log is crucial for recovery. An Oracle database consists of two or more redo log files. If a database is in archive mode, Oracle database writes changes (change vectors, a.k.a redo entries) to one of redo log files while others are being archived. Redo records are buffered in a circular fashion in the redo … Continue reading Redo & Standby Redo files created as OMF when duplicating a standby database →