A.instant notification of a RAC node failure so applications never have to retry a transaction that was sent to a node that failed during the transaction
B.near-instant notification of the failure of a RAC node failure that minimizes the possibility connection to a failed node being provided to an application
C.application level notification of a failed RAC node such that an application can retry a transaction if required
D.faster failover for Multi Datasources
E.guaranteed transaction high availability when interacting with an Oracle RAC Database