What is the difference between switchover and failover?

A switchover is a role reversal between the primary database and one of its standby databases. A failover is when the primary database (all instances of a RAC primary database) fails and one of the standby databases is transitioned to take over the primary role.

What is Data Guard broker?

Oracle Data Guard Broker is a centralized framework that automates the configuration, management, and monitoring of an Oracle Data Guard configuration. If your apply instance fails, the broker automatically starts recovery on a surviving instance.

How do I disable fast-start on failover?

Deactivating Fast-Start Failover To deactivate Fast-Start Failover, all I need to do is issue the DISABLE FAST_START FAILOVER command from within a DGMGRL session: DGMGRL> DISABLE FAST_START FAILOVER; Disabled.

What is the failover process?

The failover process ensures that a standby server in the group assumes the role of primary server, and continues to provide access to your data. The failover process can occur automatically or manually.

What are different protection modes in dataguard?

Oracle Data Guard provides three protection modes: maximum availability, maximum performance, and maximum protection.

What are the problems when using Oracle Data Guard broker?

These topics describe general problems and solutions when using Oracle Data Guard broker. A request was issued to the broker, but the database instance through which you have connected is no longer a part of the broker configuration. Reconnect to the configuration through another database that you know is part of the broker configuration.

How do I change the default failover role in Oracle Data Guard?

On the Oracle Data Guard Overview page in Cloud Control, select the standby database that you want to change to the primary role and click Failover. Then, on the Failover Confirmation page, click Yes to invoke the default Complete failover option.

What is Oracle Data Guard fast-start failover (FSFO)?

This document will guide you through configuring Oracle Data Guard Fast-Start Failover (FSFO) using a physical standby database. FSFO can provide substantial gains in high availability and disaster recovery preparedness for all environments, from inexpensive Cloud-based systems to global distributed data centers.

How do I perform a broker complete failover of a database?

Connect to the target standby database and disable fast-start failover using the FORCE option if it is enabled. Connect to another physical standby database and attempt a broker complete failover. Perform a broker immediate failover to the target physical standby database.