Active Data Guard - 12c (enhanced features)
Active Data Guard is an Oracle Database Enterprise Edition option. It includes all of the Data Guard functionality described to this point, as well as the following capabilities: Real-Time Query – Performance and ROI
Automatic Block Repair – High Availability
Far Sync - Zero Data Loss Protection at any Distance: Active Data Guard Far Sync, a new capability for Oracle Database 12, eliminates compromise by extending zero data loss protection to any standby database located at any distance from a primary database, and doing so at minimal expense and without additional complexity.
Database Rolling Upgrades using Active Data Guard: Database Rolling Upgrades using Active Data Guard, a new capability for Oracle Database 12, addresses concerns for complexity by replacing forty-plus manual steps required to perform a transient logical rolling upgrade with three PL/SQL packages that automate much of the process.
Application Continuity - Application Continuity is a new application-independent capability for Oracle Database 12that recovers incomplete requests from an application perspective and masks many system, communication, and hardware failures, and storage outages from the end-user. It also ensures that end-user transactions are executed no more than once.
Global Data Services - Oracle Global Data Services (GDS) is a new capability for Oracle Database 12that extends familiar RAC-style connect-time and run-time load balancing, service failover and workload management capabilities to a collection of replicated databases, be it within a single datacenter or across multiple datacenters.