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Oracle 1z0-076 Exam Syllabus Topics:

Topic	Details
Topic 1	Creating a Data Guard Broker Configuration: This section delves into the practical aspects of creating and managing a Data Guard broker configuration, including command-line and Enterprise Manager approaches.
Topic 2	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 3	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 4	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 5	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 6	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 7	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 9	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 10	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 11	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 12	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 13	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.

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Oracle Database 19c: Data Guard Administration Sample Questions (Q24-Q29):

NEW QUESTION # 24
Which two are true about database roles in an Oracle Data Guard configuration?

A. A Snapshot Standby Database can be a fast-start failover target.
B. A Logical Standby Database can cascade redo to a terminal destination.
C. A Logical Standby Database can be converted to a Snapshot Standby Database.
D. A configuration consisting only of a primary and one or more physical standby databases can support a rolling release upgrade.
E. A Physical Standby Database can be converted into a Logical Standby Database.

Answer: D,E

Explanation:
A Physical Standby Database can indeed be converted into a Logical Standby Database, providing flexibility in a Data Guard configuration. This allows for the database to switch roles and supports SQL apply operations, enabling more granular control over the data and transactions being replicated and applied. Additionally, having a configuration with a primary database and one or more physical standby databases allows for rolling upgrades to be performed. This means that each database in the Data Guard configuration can be upgraded in a phased manner, minimizing downtime and ensuring high availability during the upgrade process.

NEW QUESTION # 25
Which TWO statements are true about configuring Oracle Net Service in a Data Guard environment?

A. Installing the oracle-database-preinstall-19c package is NOT sufficient to set up operating system kernel parameters for Oracle Net.
B. It is necessary to use the failover clause for an address_list with multiple address lists in the tnsnames.ora file.
C. A static service must be registered with the local listener to enable DGMGRL to restart instances during the course of broker operations.
D. Enterprise Manager does not require static service registration to restart instances during the course of broker operations.
E. Install the oracle-database-preinstall-19c package to set the kernel parameters for Oracle Net based on the Data Guard best practice guidelines.

Answer: A,C

Explanation:
* A static service must be registered with the local listener to enable DGMGRL to restart instances during the course of broker operations (A): For DGMGRL (Data Guard Manager Command-Line Interface) to perform instance management operations, such as restarting instances, a static service registration in the listener is required. This allows the broker to connect to the database instance even when the instance is not fully up and the dynamic service registration is not available.
* Installing the oracle-database-preinstall-19c package is NOT sufficient to set up operating system kernel parameters for Oracle Net (C): While the oracle-database-preinstall-19c package automates the setting of several kernel parameters to meet the preinstallation requirements for Oracle Database, it does not specifically tailor all settings for Oracle Net in a Data Guard configuration. Additional manual configuration may be required to optimize Oracle Net services for Data Guard operations.
References:
* Oracle Data Guard Broker documentation
* Oracle Net Services Administrator's Guide

NEW QUESTION # 26
Which THREE statements are true about Far Sync instances?

A. The Data Guard Broker must be used to deploy and manage Far Sync instances.
B. They use an spfMe, a standby controlfile, and standby redo logs.
C. They work with any protection level.
D. A primary database can ship redo directly to multiple Far Sync instances.
E. They enable standby databases to be configured at remote distances from the primary without impacting performance on the primary.

Answer: A,D,E

NEW QUESTION # 27
Which three statements are true....... With no Oracle Streams or Goldengate configured?

A. Only standby databases can write redo....
B. They are required on a physical standby for real-time apply.
C. They are required only for synchronous redo transport
D. It is recommended to have them on the...
E. The LGWR process writes to them on ....
F. They are required on a logical standby for real-time apply

Answer: B,E,F

Explanation:
C; The LGWR (Log Writer) process is responsible for writing redo entries from the redo log buffer to the online redo log files on the primary database. This is a fundamental process in the Oracle Database architecture, ensuring that all changes made to the database are captured for purposes such as recovery, replication, and high availability.
D; Real-time apply on a logical standby database requires standby redo log files. The standby redo log files are used to store redo data received from the primary database before it is applied to the logical standby database.
This enables the logical standby to apply changes as they are received, without waiting for the current redo log file to be archived.
E: Similarly, on a physical standby database, standby redo log files are used for real-time apply. They store redo data from the primary database, allowing the physical standby to apply redo data concurrently as it is received, rather than waiting for redo log files to be archived. This capability is crucial for maintaining a physical standby database that is closely synchronized with the primary database with minimal lag.
These functionalities are integral to Oracle Data Guard configurations and are not dependent on Oracle Streams or Oracle GoldenGate, which are separate technologies for data replication and integration.

NEW QUESTION # 28
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 set of actions will fulfill this requirement?

A. Set the LOCAL_LISTENER parameter for all the database instance to register services with the default listener on the primary database host.
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 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.

Answer: B

Explanation:
For seamless client redirection in a Data Guard environment, the following steps should be taken:
* Create a database service on the primary database that is started automatically by a trigger when the database role is PRIMARY (B): This ensures that the service is only available on the primary database and is automatically started after a role transition due to switchover or failover.
* 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): Client applications use the connection descriptors that include all potential primary hosts (i.e., the current primary and all standbys). This enables clients to connect to whichever database is currently acting as the primary using the service name.References:
* Oracle Data Guard Concepts and Administration Guide
* Oracle Real Application Clusters Administration and Deployment Guide

NEW QUESTION # 29
......

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