1z0-066 Exam Dumps - Oracle Database 12c: Data Guard Administrator

B: If fast-start failover is enabled, the observer will automatically reinstate the standby databases after failover has completed.

E: FastStartFailoverAutoReinstate= ‘FALSE’ means that the former primary database will not be reinstated automatically after a failover,

Note: The FastStartFailoverAutoReinstate configuration property causes the former primary database to be automatically reinstated if a fast-start failover was initiated because the primary database was either isolated or had crashed. To prevent automatic reinstatement of the former primary database in these cases, set this configuration property to FALSE.

The observer is the third party in an otherwise typical primary/standby Data Guard configuration. Only the observer can initiate FSFO failover. It's secondary job is to automatically reinstate a failed primary as a standby if that feature is enabled (the default).

The Maximum Availability protection mode provides the highest level of data protection that is possible without compromising the availability of a primary database.

When a transport is performed using SYNC/AFFIRM, the primary performs write operations and waits for acknowledgment that the redo has been transmitted synchronously to the physical standby and written to disk. A SYNC/AFFIRM transport provides an additional protection benefit at the expense of a performance impact caused by the time required to complete the I/O to the standby redo log.

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Configure the following database settings before enabling Flashback Database:

You must have a fast recovery area enabled, because flashback logs can only be stored in the fast recovery area.

Your database must be running in ARCHIVELOG mode, because archived logs are used in the Flashback Database operation.

For Oracle Real Application Clusters (Oracle RAC) databases, the fast recovery area must be in a clustered file system or in ASM.

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Usually Data Guard configuration verification is kind of health check of Data Guard, it does many things like performing complete health check, verifying the FSFO status, determination of protection mode, availability of standby redo log files, Data Guard status whether valid or not, After the log switch whether the sequence is shipping to standby or not and Data Guard properties. To initiate Data Guard verification Navigation is "Availability --> Verify Data Guard Configuration".

References: http://www.toadworld.com/platforms/oracle/w/wiki/11149.monitoring-troubleshooting-data-guard-using-em12c