What is the difference between switchover and failover?

The main difference between switchover and failover Oracle Data Guard is that Switchover requires human intervention, while failover occurs automatically without warning. In brief, switchover converts to the standby database manually while failover converts to the standby database automatically during a failure.

What is fast start failover Data Guard?

Fast-Start Failover is a feature that allows the Oracle Data Guard broker to failover a failed primary database automatically to a predetermined standby database. This feature increases the availability of the database by eliminating the need for DBA involvement as part of the failover process.

How do you perform a failover?

Right-click on the availability group to failover from the primary instance and go to failover. Go through the failover wizard and perform an AG failover. Alternatively, you can run the Alter Availability Group command to initiate a failover from the primary to the secondary replica.

How do you failover a database?

To manually fail over database mirroring

  1. Connect to the principal server instance and, in the Object Explorer pane, click the server name to expand the server tree.
  2. Expand Databases, and select the database to be failed over.
  3. Right-click the database, select Tasks, and then click Mirror.
  4. Click Failover.

What is the difference between failover and failback?

The failover operation is the process of switching production to a backup facility (normally your recovery site). A failback operation is the process of returning production to its original location after a disaster or a scheduled maintenance period.

How do I reinstate my standby database after failover?

To use Flashback Database, you must configure it on every database in the configuration. Then, after a failover occurs, you can use Flashback Database to reinstate your disabled physical standby database. If the target is a RAC standby database, the broker restarts instances that it shut down prior to the failover.

How do I setup a Data Guard broker?

You use the dgmgrl command to create the Oracle Data Guard Broker configuration. You need to know the name of the Oracle Data Guard Broker configuration that you want to create, the name of the primary database, and the net service name through which to connect.