Scenario 7: Enabling Fast-Start Failover When a Far Sync Instance Is In Use

Fast-start failover can be enabled in maximum availability mode when the fast-start failover target is a logical or physical standby database that receives redo data from a far sync instance.

To enable fast-start failover when a far sync instance is used to ship redo data to the standby database, the FastStartFailoverTarget property must first be set on both the primary and target standby database, as follows:

DGMGRL> EDIT DATABASE 'North_Sales' SET PROPERTY FastStartFailoverTarget='South_Sales';
DGMGRL> EDIT DATABASE 'South_Sales' SET PROPERTY FastStartFailoverTarget='North_Sales';

Then, fast-start failover can be enabled, as follows:

DGMGRL> ENABLE FAST_START FAILOVER;

Note that the far sync instance database is not specified as the fast-start failover target for either North_Sales or South_Sales.