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Oracle Database 19c: Data Guard Administration Sample Questions (Q14-Q19):

NEW QUESTION # 14
Which THREE statements are true about Far Sync instances?

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

Answer: C,D,E

NEW QUESTION # 15
A customer asks for your recommendation regarding this requirement:
1. We plan to have a Data Guard Configuration with one primary database and one physical standby database.
2. We want zero data loss in case of a disaster involving the loss of one component.
3. We want to do Real Application Testing occasionally on the Standby Database.
Which solution, if any, satisfies these requirements?

A. A far sync instance plus a snapshot standby database and real time apply that can be converted regularly into logical standby database to do real application testing
B. A snapshot standby database with real time query that can be converted regularly into a physical standby database open read write, to do real application testing
C. These requirements cannot be met.
D. A physical standby database with synchronous redo transport that can be converted regularly into a snapshot standby to do real application testing

Answer: D

Explanation:
Synchronous redo transport for zero data loss (B): To guarantee zero data loss in the case of a disaster, synchronous redo transport must be configured between the primary and standby databases.
Conversion to snapshot standby for testing (B): A physical standby database can be temporarily converted into a snapshot standby database to perform real application testing. After testing is completed, the snapshot standby can be converted back to a physical standby to resume its disaster recovery role.
Reference:
Oracle Data Guard Concepts and Administration Guide
Oracle Database Testing Guide

NEW QUESTION # 16
Examine the Data Guard configuration:
DGMGRL> show configuration;
Configuration - Animals
Protection Mode: MaxAvailability
Databases:
dogs - Primary database
cats - Snapshot standby database
sheep - Snapshot standby database
Fast-Start Failover: DISABLED
Configuration Status:
ORA-01034: ORACLE not available
ORA-16625: cannot reach database "dogs"
DGM-17017: unable to determine configuration status
ou wish to perform a failover to sheep. Which command, or sequence of commands, should you issue to the broker before executing failover to sheep; using the broker?

A. DGMGRL> convert database sheep to physical standby;
B. DGMGRL> convert database cats to physical standby;
C. DGMGRL> convert database sheep to physical standby;
DGMGRL> edit configuration set protection mode as maxperformance;
DGMGRL> convert database sheep to physical standby;
D. None, because you can directly failover to a Snapshot Standby Database.
E. DGMGRL> convert database cats to physical standby;

Answer: A

NEW QUESTION # 17
You created a physical standby database prodsbyi from the primary database prod using SQL and RMAN. Which THREE are prerequisites for creating a Data Guard Broker configuration to manage these databases?

A. The LOG_ARCHIVE_DEST_n parameters with the service attribute set must be cleared.
B. The primary database must have FORCE LOGGING enabled.
C. The primary database must have supplemental logging enabled.
D. A local net service name to enable connectivity to the PRODSBYI database instance must be defined on the primary database host.
E. The DG_BROKER_START parameter must be set to TRUE for both database instances.
F. The standby database must have supplemental logging enabled.

Answer: C,D,E

Explanation:
When setting up a Data Guard Broker configuration for a primary database and its physical standby, the following prerequisites must be met:
A: Oracle Net connectivity must be defined on both the primary and standby hosts to enable the respective database instances to communicate with each other.
B: Supplemental logging is required on the primary database because it provides additional logging necessary for the standby database to be able to apply changes from the primary database accurately.
F: The DG_BROKER_START parameter must be set to TRUE for both the primary and standby database instances. This parameter is used to start the Data Guard Broker process which manages the configuration.
Options C and D are not prerequisites for creating a Data Guard Broker configuration. Additionally, while FORCE LOGGING mode (option E) is recommended as a best practice to prevent possible data inconsistencies during media recovery, it is not a strict prerequisite for creating a Data Guard Broker configuration.

NEW QUESTION # 18
You must configure flashback database for your Oracle 19c databases that will be part of a Data Guard Broker configuration.
The databases are all in ARCHIVELOG mode.
You will execute the SQL statement:
ALTER DATABASE FLASHBACK ON;
Which three are true concerning this command?

A. It will execute successfully while an Oracle 19c primary database is open.
B. If executed successfully on an Oracle 19c primary database, flashback will also be enabled on all logical standby databases that are part of the configuration.
C. If executed successfully on an Oracle 19c primary database, flashback will also be enabled on all physical standby databases that are part of the configuration.
D. It will execute successfully on an Oracle 19c physical standby database while Real Time Query is active.
E. It will execute successfully on an Oracle 19c logical standby database while SQL apply is active.
F. It will execute successfully while an Oracle 19c primary database is mounted.

Answer: A,E,F

Explanation:
The command ALTER DATABASE FLASHBACK ON; enables the Flashback Database feature, which provides a way to quickly revert an entire Oracle database back to a previous point in time. This command can be executed while an Oracle 19c primary database is either open (option A) or mounted (option B). It is also applicable to an Oracle 19c logical standby database while SQL Apply is active (option E). However, it's important to note that enabling Flashback Database on the primary does not automatically enable it on all associated standby databases, whether they are physical or logical. Each database in a Data Guard configuration must have Flashback Database explicitly enabled if desired. Real Time Query being active on a physical standby does not directly relate to the ability to execute this command on the standby. References:
The explanation is based on Oracle's concepts for Flashback Technology and Data Guard configurations as detailed in the Oracle Database Backup and Recovery User's Guide and the Oracle Data Guard Concepts and Administration guide.

NEW QUESTION # 19
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