A Data Guard configuration always runs in one of three data protection modes (also called as redo transport rules): Maximum Protection Maximum Availability Maximum Performance (default mode of operation) All three modes provide a high degree of data protection, but they differ in terms of the effect that each has on the availability and performance of the primary database. Data Guard Protection modes The supported redo transport configurations for the 3 Data Guard Protection Modes … [Read more...] about What are Oracle Data Guard Protection Modes (redo transport rules) and how to configure them