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Oracle 1z1-076 Exam Syllabus Topics:

Topic	Details
Topic 1	Performing Role Transitions: Here, the concept of database roles is explained, along with the steps for performing switchovers, failovers, and maintaining physical standby sessions during role transitions.
Topic 2	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.
Topic 3	Managing Physical Standby Files After Structural Changes on the Primary Database: The topic covers managing structural changes in the primary database and their impact on physical standby files.
Topic 4	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 7	Using Oracle Active Data Guard: Supported Workloads in Read-Only Standby Databases: Here, the usage of physical standby databases for real-time queries is discussed.
Topic 8	Backup and Recovery Considerations in an Oracle Data Guard Configuration: In this topic, Backup and recovery procedures in a Data Guard configuration are discussed, including RMAN backups, offloading to physical standby, and network-based recovery.
Topic 9	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 10	Oracle Data Guard Broker Basics: An overview of the Data Guard broker, its architecture, components, benefits, and configurations, is provided here. It serves as an introduction to the tool used for managing Data Guard configurations.
Topic 11	Patching and Upgrading Databases in a Data Guard Configuration: This section provides guidance on patching and upgrading databases in a Data Guard environment, along with performance optimization techniques and monitoring considerations.
Topic 12	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 13	Managing Oracle Net Services in a Data Guard Environment: The section focuses on Oracle Net Services and its role in Data Guard networking setup.

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Oracle Database 19c: Data Guard Administration Sample Questions (Q17-Q22):

NEW QUESTION # 17
Which THREE statements are TRUE about the supported workload in Active Data Guard standby databases?

A. PL/SQL blocks that you run on Active Data Guard standby databases can be always redirected to and run on the primary database.
B. Read-mostly reporting applications that use global temporary tables for storing temporary data can be offloaded.
C. The DDL operations on private temporary tables are transparently redirected to the primary database.
D. You might have to use sequences with global temporary tables to support read-mostly applications by using Active Data Guard.
E. The DML operations on a standby can be transparently redirected to and run on the primary database

Answer: B,D,E

Explanation:
In an Oracle Active Data Guard environment:
B: Read-mostly reporting applications that utilize global temporary tables to store session-specific data can be effectively offloaded to an Active Data Guard standby database, reducing the load on the primary database.
C: Sequences can be used with global temporary tables on an Active Data Guard standby database to support certain types of read-mostly applications, though some restrictions on sequence use may apply.
E: In Oracle Database 19c and later, DML redirection allows DML operations performed on an Active Data Guard standby database to be transparently redirected to the primary database. This is part of the DML Redirection feature.
Option A is incorrect because not all PL/SQL blocks run on an Active Data Guard standby database can be redirected to the primary database. Some PL/SQL executions, specifically those that would attempt to make changes to the database, are not supported on the standby.
Option D is incorrect because DDL operations on private temporary tables are not redirected; instead, private temporary tables are session-specific and are not persisted on disk, so they do not generate redo and are not applicable to an Active Data Guard standby.

NEW QUESTION # 18
Which two statements are true regarding asynchronous redo transport in a Data Guard

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

Answer: D,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 # 19
Which THREE statements are TRUE about the supported workload in Active Data Guard standby databases?

A. PL/SQL blocks that you run on Active Data Guard standby databases can be always redirected to and run on the primary database.
B. Read-mostly reporting applications that use global temporary tables for storing temporary data can be offloaded.
C. The DDL operations on private temporary tables are transparently redirected to the primary database.
D. You might have to use sequences with global temporary tables to support read-mostly applications by using Active Data Guard.
E. The DML operations on a standby can be transparently redirected to and run on the primary database

Answer: B,D,E

Explanation:
In an Oracle Active Data Guard environment:
* B: Read-mostly reporting applications that utilize global temporary tables to store session-specific data can be effectively offloaded to an Active Data Guard standby database, reducing the load on the primary database.
* C: Sequences can be used with global temporary tables on an Active Data Guard standby database to support certain types of read-mostly applications, though some restrictions on sequence use may apply.
* E: In Oracle Database 19c and later, DML redirection allows DML operations performed on an Active Data Guard standby database to be transparently redirected to the primary database. This is part of the DML Redirection feature.
Option A is incorrect because not all PL/SQL blocks run on an Active Data Guard standby database can be redirected to the primary database. Some PL/SQL executions, specifically those that would attempt to make changes to the database, are not supported on the standby.
Option D is incorrect because DDL operations on private temporary tables are not redirected; instead, private temporary tables are session-specific and are not persisted on disk, so they do not generate redo and are not applicable to an Active Data Guard standby.
References: The behavior and capabilities of Active Data Guard standby databases are documented in the Oracle Data Guard Concepts and Administration guide and the Active Data Guard documentation.

NEW QUESTION # 20
Examine the Data Guard configuration:

What happens if you issue "switchover to sheep;" at the DGMGRL prompt?

A. The switchover succeeds and Fast-Start Failover is suspended.
B. The switchover succeeds and Dogs becomes the new failover target.
C. It results in an error indicating that a switchover is not allowed.
D. The switchover succeeds but Dogs needs to be reinstated.
E. The switchover succeeds and Cats becomes the new failover target.

Answer: B

Explanation:
When issuing a "switchover to sheep;" command in a Data Guard configuration, the primary database (Dogs) transitions to a standby role, and the target standby database (Sheep) becomes the new primary database. Fast-Start Failover (FSFO) remains enabled, but its target changes according to the new roles of the databases. Since Cats is also a physical standby database, it does not become the failover target by default unless it is specified in the broker configuration. After the switchover, the original primary (Dogs) becomes the new standby database and thus the new failover target for FSFO.
Reference:
Oracle Data Guard Broker documentation provides detailed procedures and explanations of switchover operations, including how FSFO targets are affected post-switchover. This behavior is consistent across different Oracle Database versions that support Data Guard and FSFO.

NEW QUESTION # 21
Active Data Guard (ADG) databases are widely used to offload reporting or ad hoc query-only jobs from the primary database. Reporting workload profile is different from the primary database and often requires tuning.
Which tool is used to tune SQL workloads running on an ADG database?

A. SQL Tuning Advisor
B. In-Memory Active Session History (ASH)
C. Standby Statspack
D. Automatic Workload Repository (AWR)
E. Automatic Diagnostic Database Monitor (ADDM)

Answer: D

Explanation:
AWR collects, processes, and maintains performance statistics for problem detection and self-tuning purposes.
In an Active Data Guard environment, where the physical standby database can be used for read-only workloads, AWR can be instrumental in identifying performance bottlenecks and areas for optimization. It provides detailed reports that include wait events, time model statistics, and active session history, making it an invaluable tool for tuning SQL queries and overall database performance in an ADG setup.

NEW QUESTION # 22
......

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Oracle Database 19c: Data Guard Administration Sample Questions (Q17-Q22):

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