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Oracle 1z0-076 Exam Syllabus Topics:

Topic
Details

Topic 1

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 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 5

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 6

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 7

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 8

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 9

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 10

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 11

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.

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New 1z0-076 Test Pattern - High Pass-Rate Oracle Oracle Database 19c: Data Guard Administration - 1z0-076 New Practice Materials

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Oracle Database 19c: Data Guard Administration Sample Questions (Q65-Q70):

NEW QUESTION # 65
Which two statements are true regarding Data Guard environments in an Oracle Muti-tenant architecture?

A. The Data Guard broker may be used for multi-tenant databases.
B. Different redo transport methods can be configured for different pluggable databases within one Data Guard environment.
C. Standby redo log files are required for each pluggable database that is protected with Data Guard.
D. PDB_FILE_NAME CONVERT must be set to enable creation of standby databases if they are created on the same host as the primary.
E. A Data Guard environment with a multi-tenant primary database can operate in any Protection mode.

Answer: A,E

Explanation:
Oracle Multi-tenant architecture and Data Guard have several interactions, but specific aspects hold true in such environments:
* The Data Guard broker may be used for multi-tenant databases (B): Data Guard Broker simplifies the management and monitoring of Data Guard configurations and is fully compatible with the Oracle Multi-tenant architecture, allowing for easy management of Data Guard configurations that include multi-tenant container databases (CDBs) and their pluggable databases (PDBs).
* A Data Guard environment with a multi-tenant primary database can operate in any Protection mode (E): Data Guard can be configured to operate in Maximum Performance, Maximum Availability, or Maximum Protection mode, regardless of whether the primary database is a multi-tenant database.
This flexibility ensures that Data Guard can meet various data protection and availability requirements in multi-tenant environments.References:
* Oracle Data Guard Broker documentation
* Oracle Multitenant Administrator's Guide

NEW QUESTION # 66
Examine the Data Guard configuration: DGMGRL> show configuration;
Configuration - Animals
Protection Mode: MaxPerformance
Databases:
dogs- Primary database
sheep - Physical standby database
cats- Snapshot standby database
Fast-Start Failover: DISABLED
Configuration Status: SUCCESS
You receive an error while attempting to raise the protection mode to Maximum Protection:
DGMGRL> edit configuration set protection mode as maxprotection;
Error: ORA-16627: operation disallowed since no standby databases would remain to support protection mode Failed.
What can you conclude based on this error?

A. The redo transport mode is set to asyn: for the standby database Cats.
B. Cats is a snapshot standby database.
C. The redo transport mode is set to async for the standby database Sheep.
D. The redo transport mode is set to async for both standby databases.

Answer: B

Explanation:
The error indicates that switching the protection mode to Maximum Protection is not possible due to the presence of a snapshot standby database in the Data Guard configuration, which cannot participate in synchronous redo transport required by the Maximum Protection mode. Therefore, the correct answer is:
* D. Cats is a snapshot standby database.
Comprehensive Detailed Explanation:In an Oracle Data Guard environment, the Maximum Protection mode requires that all redo data be transmitted synchronously to at least one standby database, ensuring no data loss even in the event of a primary database failure. However, a snapshot standby database, by its nature, allows read-write access and is temporarily disconnected from the redo stream, which makes it unable to participate in the synchronous redo transport required by Maximum Protection mode. The presence of a snapshot standby database in the Data Guard configuration thus prevents the activation of Maximum Protection mode, as it cannot guarantee zero data loss without a standby database capable of receiving redo data synchronously.
References:Oracle Data Guard documentation clearly outlines the requirements and restrictions of different protection modes, including the necessity for standby databases to participate in synchronous redo transport to enable Maximum Protection mode. The inability of snapshot standby databases to fulfill this requirement is a key consideration when planning Data Guard configurations and protection levels.

NEW QUESTION # 67
Which THREE statements are true about Far Sync instances?

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

Answer: A,C,D

Explanation:
Far Sync instances are a feature of Oracle Data Guard designed to support zero data loss protection over long distances:
* The Data Guard Broker must be used to deploy and manage Far Sync instances (A): Data Guard Broker simplifies the deployment and management of Far Sync instances, which are an integral part of zero data loss protection configurations.
* They enable standby databases to be configured at remote distances from the primary without impacting performance on the primary (C): Far Sync instances are designed to receive redo from the primary database and then forward it to a remote standby database, thereby avoiding any performance
* impact on the primary database itself.
* A primary database can ship redo directly to multiple Far Sync instances (E): A primary database can be configured to send redo logs to more than one Far Sync instance, which can then forward the redo to their respective remote standby databases.References:
* Oracle Data Guard Concepts and Administration Guide
* Oracle Database High Availability Overview

NEW QUESTION # 68
Which TWO statements are true about configuring Oracle Net Service in a Data Guard environment?

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

Answer: B,D

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 # 69
Which THREE are true about using flashback database in a Data Guard environment?

A. It may be used to flash back a physical standby that receives redo from a far sync instance.
B. It may not be used to flash back a primary database after a failover to a physical standby.
C. You can use it when real-time apply is enabled in case the phylt may not be used to flash back a primary database after a failover to a logical standby.
D. When a flashback database operation is performed on a primary database, a physical standby database is also flashed back automatically.
E. You can use it when real-time apply is enabled in case the physical standby suffers from logical corruption.
F. When a flashback database operation is performed on a primary database, a logical standby database is also flashed back automatically.

Answer: A,B,E

Explanation:
Flashback Database is a feature that allows reverting a database to a previous point in time, which is extremely useful in various Data Guard configurations:
* It may be used to flash back a physical standby that receives redo from a far sync instance (C):
Flashback Database can be used on a physical standby database to revert it to a past point in time, even when it is receiving redo data from a far sync instance. This can be particularly useful to recover from logical corruptions or unwanted changes.
* You can use it when real-time apply is enabled in case the physical standby suffers from logical corruption (D): Even when real-time apply is enabled, which allows redo data to be applied to the standby database as soon as it is received, Flashback Database can be used to revert the physical standby database to a point in time before the logical corruption occurred.
* It may not be used to flash back a primary database after a failover to a physical standby (E):
After a failover has occurred from a primary to a physical standby database, making the standby the new primary, Flashback Database cannot be used to revert the old primary database to a state before the failover because the failover operation makes irreversible changes to the database role and configuration.References:
* Oracle Database Backup and Recovery User's Guide
* Oracle Data Guard Concepts and Administration

NEW QUESTION # 70
......

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