Kellyn Gorman takes a peek at Oracle Data Guard:
In its traditional, (and free) configuration, Oracle Data Guard operates in an active/passive architecture. This incredibly well-designed and valuable solution from Oracle which comes included with the Enterprise Edition has as part of its architecture:
- A primary database, which is an active, accessible database system.
- One or more standby databases, which are passive replicas that continuously receive redo data from the primary.
Click through for an overview of the product.