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Oracle Database 19c: Data Guard Administration Sample Questions (Q63-Q68):NEW QUESTION # 63
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 async for the standby database Sheep.
  • B. The redo transport mode is set to async for both standby databases.
  • C. The redo transport mode is set to asyn: for the standby database Cats.
  • D. Cats is a snapshot standby database.
Answer: D
Explanation:
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.
Reference:
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.
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:

NEW QUESTION # 64
Which TWO statements are true about Far Sync instances?
  • A. They do not work with Snapshot Standby databases.
  • B. They do not work with Logical Standby databases.
  • C. They work in Maximum Availability mode.
  • D. They work in Maximum Performance mode.
  • E. They work in Maximum Protection mode.
Answer: B,D

NEW QUESTION # 65
Which two are true about managing and monitoring Oracle container databases in a Data Guard environment using the broker?
  • A. All broker actions execute at the root container for container databases.
  • B. If the primary database is a container database, then a physical standby may be a non-container database.
  • C. If the primary database is a container database, then a logical standby may be a non-container database.
  • D. If the primary database is not a container database, then a standby may be a container database.
  • E. After a role change, the broker opens all Pluggable databases (pdbb) on the new primary.
Answer: A,E
Explanation:
In the context of Oracle Data Guard and container databases (CDBs) managed by Data Guard Broker:
All broker actions execute at the root container for container databases (D): When using Data Guard Broker to manage a CDB, the actions performed by the broker are executed at the level of the root container. This is because the root container maintains the control and configuration information that applies to the entire CDB, including all of its pluggable databases (PDBs).
After a role change, the broker opens all Pluggable databases (PDBs) on the new primary (E): Following a role transition such as a switchover or a failover, Data Guard Broker ensures that all PDBs within the CDB of the new primary database are opened, which is essential to resume operations of the PDBs without manual intervention.
Reference:
Oracle Data Guard Broker documentation
Oracle Multitenant Administrator's Guide

NEW QUESTION # 66
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 DG_BROKER_START parameter must be set to TRUE for both database instances.
  • C. A local net service name to enable connectivity to the PRODSBYI database instance must be defined on the primary database host.
  • D. The primary database must have FORCE LOGGING enabled.
  • E. The standby database must have supplemental logging enabled.
  • F. The primary database must have supplemental logging enabled.
Answer: B,C,F
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.
References: This guidance is based on Oracle's best practices for setting up Data Guard configurations, as found in the Oracle Data Guard Broker documentation and the Oracle Data Guard Concepts and Administration guide.

NEW QUESTION # 67
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 tasks 1, 3, and 5
  • C. Execute tasks 1 and 5
  • D. Execute only task 5
Answer: B
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 # 68
......
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