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[General] Oracle 1z0-076 - Oracle Database 19c: Data Guard Administration Marvelous New Te

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【General】 Oracle 1z0-076 - Oracle Database 19c: Data Guard Administration Marvelous New Te

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Oracle 1z0-076 Exam Syllabus Topics:
TopicDetails
Topic 1
  • 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 2
  • 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 3
  • 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
  • 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 6
  • 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 7
  • 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 8
  • 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 9
  • 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 10
  • 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.

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Oracle Database 19c: Data Guard Administration Sample Questions (Q50-Q55):NEW QUESTION # 50
Which four requirements can be met by deploying a logical standby database?
  • A. It must provide a disaster-recovery solution that protects all data with capability of performing switchovers and failovers.
  • B. It can be used to create additional schemas.
  • C. It must have the same physical structure as the primary database.
  • D. Support for workloads requiring additional materialized views.
  • E. It can be used for Real Application Testing without affecting the disaster recovery capabilities.
  • F. Support for workloads requiring additional indexes.
  • G. It can be used to create additional tables.
Answer: D,E,F,G
Explanation:
A logical standby database is part of Oracle Data Guard and allows the standby database to be open for read-write operations, providing additional flexibility. The requirements met by a logical standby database include:
Support for workloads requiring additional materialized views (A): Logical standby databases can support materialized views, allowing for complex data summarization and reporting workloads.
It can be used to create additional tables (C): Unlike physical standby databases, logical standby databases allow for the creation of additional tables that do not exist in the primary database, enabling custom workloads and reporting.
It can be used for Real Application Testing without affecting the disaster recovery capabilities (E): Logical standby databases can be used to test application changes, patches, and upgrades while still maintaining their role as part of the disaster recovery strategy.
Support for workloads requiring additional indexes (F): Logical standby databases allow for the creation of additional indexes to optimize query performance for reporting and analytical workloads.
Reference:
Oracle Data Guard Concepts and Administration
Oracle Database High Availability Overview

NEW QUESTION # 51
Examine the Data Guard configuration:
DGMGRL> show configuration;
Configuration - Animals
Protection Mode: MaxAvailability
Databases:
dogs - Primary database
sheep - Snapshot standby database
cats - Physical 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.
Which is the minimum statement, or sequence of statements you must execute to enable successful raising of the protection mode to Maximum Protection?
  • A. DGMGRL> edit database dogs set property LogXptMode=sync;
    DGMGRL> edit database cats set property LogXptMode=sync;
  • B. DGMGRL> edit database dogs set property LogXptMode=sync;
    DGMGRL> edit database sheep set property LogxptMode=sync;
    DGMGRL> edit database cats set property LogXptMode=sync;
  • C. DGMGRL> edit database cats set property LogXptMode=sync;
  • D. DGMGRL> edit database dogs set property LogxptMode=sync;
    DGMGRL> edit database sheep set property LogxptMode=sync;
  • E. DGMGRL> edit database dogs set property LogxptMode=sync;
  • F. DGMGRL> edit database sheep set property LogXptMode=sync;
Answer: A

NEW QUESTION # 52
The Oracle database 19c Observer is currently running on host1 and you wish to have it running on host2.
Examine this list of possible steps:
1) Stop the observer on host1
2) Disable Fast-Start Failover
3) Update the broker configuration with the new observer hostname
4) Enable Fast-Start Failover
5) Start the Observer on host2
Which contains the minimum required steps to move the observer to host2?
  • A. Execute tasks 1, 2, 3, 4, and 5
  • B. Execute only task 5
  • C. Execute tasks 1 and 5
  • D. Execute tasks 1, 3, and 5
Answer: D
Explanation:
* Stop the Observer on host1 to ensure that there are no conflicts between the instances of the Observer running on different hosts.
* Update the Data Guard Broker configuration with the new hostname for the Observer. This step is crucial to redirect the Data Guard Broker to communicate with the Observer on the new host.
* Start the Observer on host2 to resume its operations in the new environment.
Disabling and re-enabling Fast-Start Failover (steps 2 and 4) are not strictly necessary for moving the Observer to a new host. These steps would be more relevant if changes to the configuration of Fast-Start Failover itself were required, which is not the case when simply relocating the Observer.

NEW QUESTION # 53
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. Automatic Workload Repository (AWR)
  • B. Automatic Diagnostic Database Monitor (ADDM)
  • C. In-Memory Active Session History (ASH)
  • D. SQL Tuning Advisor
  • E. Standby Statspack
Answer: A
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 # 54
Which THREE statements are true about snapshot standby databases?
  • A. A snapshot standby database may be opened read-write.
  • B. A snapshot standby database can have Real-Time apply enabled.
  • C. A snapshot standby database may be opened read-only.
  • D. FLASHBACK DATABASE is enabled automatically on a physical standby database as part of the conversion into a snapshot standby database, if not already enabled.
  • E. FLASHBACK DATABASE must be manually enabled on a physical standby database before converting it into a snapshot standby database.
  • F. FLASHBACK DATABASE is enabled automatically on a snapshot standby database after converting it from a physical standby database if not already enabled.
Answer: A,D,F
Explanation:
Snapshot standby databases are a feature of Oracle Data Guard that allows a physical standby database to be temporarily converted into a read-write database for testing or other purposes. The true statements about snapshot standby databases are:
* FLASHBACK DATABASE is enabled automatically on a snapshot standby database after converting it from a physical standby database if not already enabled (B): When a physical standby is converted to a snapshot standby, FLASHBACK DATABASE is automatically enabled to allow the database to be easily reverted back to its original state.
* FLASHBACK DATABASE is enabled automatically on a physical standby database as part of the conversion into a snapshot standby database, if not already enabled (C): As part of the conversion process, FLASHBACK DATABASE is turned on to ensure that changes made while the database is in snapshot standby mode can be undone.
* A snapshot standby database may be opened read-write (E): Once a physical standby is converted to a snapshot standby, it can be opened for read-write operations, allowing for testing and other tasks that require a writable database.
References:
* Oracle Data Guard Concepts and Administration
* Oracle Database Backup and Recovery User's Guide

NEW QUESTION # 55
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