Attempting to start the observer raises an error:
DGMGRL> start observer;
DGM-16954: Unable to open and lock the Observer configuration file Failed.
Identify two possible ways to start the observer successfully. (Choose two.)

• A.Set the ObserverOverride property to TRUE before starting the observer.
• B.Create a broker configuration and enable Fast-Start Failover before starting the observer.
• C.Start the observer using a different observer configuration file.
• D.Start the observer in a different working directory.
• E.Enable Fast-Start Failover before starting the observer.

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Your Data Guard environment consists of these components and settings:
1. A primary database
2. A remote physical standby database
3. Real-time query is enabled.
4. The redo transport mode is set to SYNC.
5. The protection mode is set to Maximum Availability.
You notice that queries executed on the physical standby database receive errors:
ORA- 03172: STANDBY_MAX_DATA_DELAY of 15 seconds exceeded.
Which two would you recommend to avoid this error? (Choose two.)

• A.Change the protection mode to Maximum Performance.
• B.Increase the size of the buffer cache on the standby database instance.
• C.Reduce I/O latency for the storage used by the primary database.
• D.Change the protection mode to Maximum Protection.
• E.Increase the network bandwidth between the primary and standby databases.
• F.Increase the number of standby redo log files on the primary database.

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Your Data Guard environment has two remote physical standby databases.
Client applications use the local naming method to connect to the primary database instance.
You want applications to automatically connect to the new primary database instance in case of a switchover or a failover.
Which will fulfill this requirement?

• A.Create a database service on each standby database that is started automatically by a trigger, when the database role is PRIMARY; modify the connection descriptors used by client applications to include all the standby hosts and connect to the database instance using that service name.
• B.Create a database service on the primary database that is started automatically by a trigger, when the database role is PRIMARY; modify the connection descriptors used by client applications to include all the standby hosts and connect to the database instance using that service name.
• C.Set the INSTANCE_NAME parameter identically on all databases; modify the connection descriptor on client applications to include all the standby hosts and connect to the database instance using that service name.
• D.Set the DB_NAME and DB_UNIQUE_NAME identically on all databases; modify the connection descriptors on client applications to include all the standby hosts and connect to the database instance using that service name.

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Which three types of backups taken in which situations may be used to perform restore operations to a
logical standby database in a Data Guard environment?

• A.backups of control files taken on the logical standby database if not connected to a recovery catalog
• B.backups of data files taken on the standby database if connected to the recovery catalog where the
  logical standby database is registered
• C.backups of data files taken on the primary database if connected to the recovery catalog where the
  logical standby database is registered
• D.backups of control files taken on the primary database if connected to the recovery catalog where the
  logical standby database is registered
• E.backups of data files taken on the logical standby database, if not connected to a recovery catalog

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You edit the DGConnectIdentifier database property using the edit database set property DGMGRL command.
Which two are effects of this change? (Choose two.)

• A.The fal_client database initialization parameter on all standby databases is updated with the new value.
• B.The service attribute of the log_archive_dest_n initialization parameter for any database referring to the specified database is updated with the new value.
• C.The fal_client database initialization parameter for the specified database is updated with the new value.
• D.The broker configuration must be disabled and then enabled to use the new connection property.
• E.The service attribute of the log_archive_dest_n initialization parameter referring to all standby databases is updated with the new value.

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