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Quiz 2025 Oracle 1z0-076: Oracle Database 19c: Data Guard Administration–Trustable Test Free

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Oracle 1z0-076 Exam Syllabus Topics:

Topic
Details

Topic 1

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 2

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 3

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 4

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 5

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 6

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 7

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 8

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 9

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 10

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 12

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 14

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.

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Oracle Database 19c: Data Guard Administration Sample Questions (Q21-Q26):

NEW QUESTION # 21
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. A transaction can commit without waiting for redo to be sent to any standby database in the data guard configuration.
C. This transport mode satisfies the minimum requirements for Maximum Availability data protection mode.
D. Real-time query performance on a physical standby database improves for current read requests when using this transport mode.
E. The performance of SQL apply on a logical standby database always improves when using this transport mode.

Answer: A,B

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 # 22
Which FOUR database parameters might be affected by or influence the creation of standby databases?

A. DB_NAME
B. ARCHIVE_LAG_TARGET
C. FALSERVER
D. db_file_name_convert
E. STANDBY_ARCHIVE_DEST
F. COMPATIBLE

Answer: A,D,E,F

Explanation:
DB_NAME (A): The name of the database, which should remain consistent across the primary and standby databases.
db_file_name_convert (C): This parameter helps define the mapping of data file names from the primary to the standby database, which is crucial during the creation and operation of a standby database.
COMPATIBLE (D): The compatibility level can influence the features that can be used on the standby database and must be consistent with or higher than that of the primary database, especially after upgrades.
STANDBY_ARCHIVE_DEST (F): This parameter specifies the destination of archived redo log files on the standby database, which is important for log transport and apply services.
Reference:
Oracle Data Guard Concepts and Administration Guide
Oracle Database Reference

NEW QUESTION # 23
Your Data Guard environment has one physical standby database using Real-Time Query. Two sequences have been created by these SQL statements:

Neither sequence has been used since being created.
Session 1 connects to the primary database instance and issues these two SQL statements:
SELECT a.nextval FROM DUAL; SELECT b.nextval FROM DUAL;
Then session 2 connects to the physical standby database instance and issues the same SQL statements. Which output will be seen for session 2?
Then session 2 connects to the physical standby database instance and issues the same SQL statements. Which output will be seen for session 2?
A)

A. Option B
B. Option A
C. Option C
D. Option D

Answer: C

Explanation:
In Oracle, a sequence created with the GLOBAL keyword is available and can produce values across all sessions and instances. However, a sequence created with the SESSION keyword is only specific to the session it was created in. When the NEXTVAL is called for a sequence, it will increment according to the sequence's properties set during its creation.
Given the sequence creation statements and the actions performed:
The a sequence is global, which means it is available across the entire database, including the standby database with Real-Time Query enabled. So, when session 2 calls a.nextval, it will get the next value in the sequence, which is 21 since session 1 already retrieved 1.
The b sequence is session-specific, so when session 2 calls b.nextval, it will get the value 1 because for this new session on the standby, this is the first time the sequence is being accessed.
Therefore, the output for session 2 will be a output as 21 and b output as 1, which corresponds to Option C.

NEW QUESTION # 24
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.

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

Answer: C,E

NEW QUESTION # 25
Which statement is true regarding Oracle Net connectivity for a Data Guard Broker configuration?

A. To start SQL Apply on a logical standby database, a TNS entry enabling connectivity to the primary database instance must be defined on the logical standby database host.
B. The LOCAL_LISTENER initialization parameter must be set to the listener used to register the primary database instance.
C. A TNS entry or entries enabling connectivity to standby database instance(s) must be defined on the primary database host.
D. To enable Real-Time Query on a physical standby database, a TNS entry enabling connectivity to the standby database instance must be defined on the primary database host.
E. A TNS entry enabling connectivity to the primary database instance must be defined on each of the standby database hosts.

Answer: C

NEW QUESTION # 26
......

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