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Oracle 1z0-076 Exam Syllabus Topics:

Topic	Details
Topic 1	Managing Oracle Net Services in a Data Guard Environment: The section focuses on Oracle Net Services and its role in Data Guard networking setup.
Topic 2	Monitoring a Data Guard Broker Configuration: The topic covers the use of Enterprise Manager and DGMGRL to monitor Data Guard configurations and explains the various data protection modes available.
Topic 3	Oracle Data Guard Basics: This topic covers the essential architecture and concepts of Oracle Data Guard. It includes sub-topics such as the physical and logical standby database comparison, benefits of Data Guard, and its integration with multi-tenant databases.
Topic 4	Creating a Logical Standby Database: This topic guides users through the process of creating and managing a logical standby database, including SQL Apply filtering.
Topic 5	Enhanced Client Connectivity in a Data Guard Environment: This topic focuses on enhancing client connectivity in a Data Guard setup and implementing failover procedures for seamless client redirection. It also covers application continuity to ensure uninterrupted operations during role transitions.
Topic 6	Using Flashback Database in a Data Guard Configuration: This topic covers the configuration and advantages of using Flashback Database in a Data Guard setup, as well as the process of enabling fast-start failover for seamless role changes.

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Oracle Database 19c: Data Guard Administration Sample Questions (Q48-Q53):

NEW QUESTION # 48
Which TWO are TRUE about offloading backups to a physical standby database in a Data Guard environment?

A. The standby database can not be registered in an RMAN catalog if the primary database has not been registered.
B. Backups of the standby control file taken while connected to the catalog where the database is registered, may be used to restore the control file on the primary database.
C. The standby database must be registered in an RMAN catalog before the primary database has been registered.
D. The standby database must be registered in an RMAN catalog after the primary database has been registered.

Answer: B,D

Explanation:
In a Data Guard environment, offloading backups to a physical standby database has certain requirements:
A: Once the primary database is registered in an RMAN catalog, the standby database can also be registered. This allows RMAN to manage backups coherently across both databases and leverage the standby database for backup purposes without interfering with the primary database's workload.
C: Backups of the standby control file taken while connected to the catalog where the database is registered can be used to restore the control file on the primary database. This ensures that backup metadata is consistent across the Data Guard configuration.
Options B and D are incorrect because there is no strict requirement for the order in which the primary and standby databases must be registered in an RMAN catalog. However, it is a common practice to register the primary database first.

NEW QUESTION # 49
You notice that the SQL apply lag on your logical standby database has increased but the redo transport lag has not.
Which four could be reasons for the increase in SQL apply lag?

A. Many SQL apply operations do full table scans
B. An undersized shared pool
C. An increased number of bulk inserts on the primary
D. An undersized undo tablespace on the logical standby
E. The standby redo log files are undersized on the primary database
F. An increased number of bulk updates on the primary

Answer: A,B,D,F

Explanation:
The SQL apply lag on a logical standby database can be caused by several factors:
A: An undersized undo tablespace can lead to delays in SQL apply operations as it may not be able to handle the volume of undo records generated by the SQL apply process.
B: SQL apply operations that do full table scans can consume significant system resources, potentially leading to higher apply lag.
C: An increased number of bulk updates on the primary database may generate a large volume of redo data, which can cause apply lag if the logical standby cannot apply the changes quickly enough.
F: An undersized shared pool may affect the parsing and execution of SQL statements by SQL apply, which can contribute to the apply lag.
Option D is less likely to be a direct cause of SQL apply lag compared to bulk updates, as inserts generate new data rather than modifying existing data, which SQL apply can typically handle more efficiently.
Option E is incorrect because the size of the standby redo log files on the primary database impacts redo transport lag, not SQL apply lag.

NEW QUESTION # 50
Which TWO statements are true for Data Guard environments with multi-tenant databases?

A. The Data Guard broker automatically opens all pluggable databases of a primary database after a role change operation.
B. A multi-tenant standby database can have fewer pluggable databases than the primary container database.
C. The Data Guard broker automatically always opens the pluggable databases of a standby database after a role change operation.
D. Different pluggable databases within a logical standby database may have different guard statuses.
E. The CDBDBA privilege must be used instead of the SYSDBA privilege for connections as SYS to the root container of a multi-tenant standby database.

Answer: B,D

NEW QUESTION # 51
Which two statements are true regarding asynchronous redo transport in a Data Guard

A. This transport mode satisfies the minimum requirements for Maximum Performance data protection mode.
B. This transport mode satisfies the minimum requirements for Maximum Availability data protection mode.
C. The performance of SQL apply on a logical standby database always improves when using this transport mode.
D. Real-time query performance on a physical standby database improves for current read requests when using this transport mode.
E. A transaction can commit without waiting for redo to be sent to any standby database in the data guard configuration.

Answer: A,E

Explanation:
Asynchronous redo transport is a method where the primary database does not wait for an acknowledgment from the standby database before committing transactions, which helps in minimizing the impact on the primary database's performance (B). This transport mode is associated with the Maximum Performance data protection mode, which prioritizes performance over synchronicity of data between the primary and standby databases (C). While it provides a level of data protection, there could be some data loss in the event of a primary database failure because redo data may not have been transmitted to the standby database at the time of the failure.
References:Oracle Data Guard Concepts and Administration documentation provides detailed explanations of different redo transport modes and their implications on data protection and performance. Asynchronous transport mode's behavior and association with Maximum Performance mode are outlined explicitly.

NEW QUESTION # 52
Your Data Guard environment has two remote physical standby databases.
Client applications use the local naming method to define connectivity to the primary database instance.
Which will automatically redirect clients to the new primary database in case of a switchover or failover?

A. Set the DB_NAME parameter identically on all databases; modify the connection descriptor on the clients to use DB_NAME to connect to the primary database instance.
B. Configure a PRIMARY role service on the Primary and Standby and modify the Client connect descriptor to include both the Primary and the Standby.
C. Create a database service on the standby databases; automate the start of the service after a role change, and modify the connection descriptor on the clients to use that service.
D. Set the LOCAL_LISTENER parameter for all the database instances, to register services with the default listener on the primary database host.

Answer: C

NEW QUESTION # 53
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