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Oracle 1z1-076 Exam Syllabus Topics:

Topic
Details

Topic 1

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 2

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 3

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 4

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 6

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 7

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 8

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 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

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.

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Oracle Database 19c: Data Guard Administration Sample Questions (Q27-Q32):

NEW QUESTION # 27
Suppose that you manage the following databases in your environment:
* boston: Primary database with a single PDB called DEVI
* london: Physical standby database protecting the PDB called DEVI
* orcl: Stand-alone database with a single PDB called PDB1 as a remote clone source You are planning to run the following command to create a remote clone in the primary database (boston) using pdbi in orcl:
Which are the THREE prerequisites for automating instantiation of the PDB in the standby database (london)?

A. Open PDBI (remote clone source) in Read Only.
B. Set standby_pdb_source_file_dblink to clone_link in the london database.
C. Set STANDBY_PDB_SOURCE_FILE_DIRECTORY to <location of the PDB> in the london database.
D. Enable Active Data Guard in the _ondon database.
E. Set STANDBY_FILE_MANAGEMENT to auto in the london database.
F. Open PDBI (remote clone source) in Read Write.

Answer: A,C,E

Explanation:
To automate the instantiation of a PDB in the standby database after creating a remote clone in the primary database, certain conditions must be met:
Open PDBI (remote clone source) in Read Only (A): The source PDB from which the clone is created must be open in read-only mode to ensure a consistent state during cloning.
Set STANDBY_PDB_SOURCE_FILE_DIRECTORY to <location of the PDB> in the london database (C): This parameter specifies the location on the standby database where the files from the source PDB should be placed.
Set STANDBY_FILE_MANAGEMENT to auto in the london database (F): This parameter automates the management of file changes on the standby database when structural changes occur on the primary database, ensuring that the clone operation is reflected automatically on the standby.
Reference:
Oracle Multitenant Administrator's Guide
Oracle Data Guard Broker documentation

NEW QUESTION # 28
Your Data Guard environment consists of these components and settings:
1. A primary database
2. A remote physical standby database
3. Real-time query is enabled.
4. The redo transport mode is set to SYNC.
5. The protection mode is set to Maximum Availability.
You notice that queries executed on the physical standby database receive errors: ORA-03172:
STANDBY_MAX_DATA_DELAY of 15 seconds exceeded. Which two would you recommend to avoid this error?

A. Increase the number of standby redo log files on the primary database.
B. Change the protection mode to Maximum Performance.
C. Increase the network bandwidth between the primary and standby databases.
D. Reduce I/O latency for the storage used by the primary database.
E. Change the protection mode to Maximum Protection.
F. Increase the size of the buffer cache on the standby database instance.

Answer: C,D

Explanation:
The ORA-03172: STANDBY_MAX_DATA_DELAY error indicates that the real-time query on the physical standby database is experiencing delays beyond the specified maximum data delay threshold. Increasing the network bandwidth (Option E) can enhance the speed at which redo data is transferred from the primary to the standby database, thereby reducing the likelihood of exceeding the STANDBY_MAX_DATA_DELAY threshold. Reducing I/O latency on the primary database's storage (Option B) ensures that redo data is generated and shipped more efficiently, further mitigating the risk of delay. These actions, focused on optimizing data transfer and processing speed, address the root causes of the ORA-03172 error in a synchronous Data Guard configuration operating in Maximum Availability mode.

NEW QUESTION # 29
You are monitoring your Data Guard broker configuration and issue this set of DGMGRL commands:
DGMGRL> SHOW CONFIGURATION;
Configuration - DRSolution
Protection Mode: MaxPerformance
Databases:
Close_by - Primary database
FS_inst - Far Sync
Far_away - Physical standby database
Fast-Start Failover: DISABLED
Configuration Status:
SUCCESS
What is true concerning this configuration?

A. The Far Sync instance will not forward redo to the Far_away physical standby because Fast-Start Failover is disabled.
B. The Close_by primary database instance forwards redo to the FS_inst Far Sync instance, which forwards the redo in turn to the Far_away physical standby database instance.
C. The Close_by primary database forwards redo to the Far_away physical standby directly and also sends redo to the FS_inst Far Sync instance.
D. The FS_inst Far Sync instance forwards redo to the Far_away physical standby only if the Close_by primary database is not able to do so.
E. The Far Sync instance will not forward redo to the Far_away physical standby because the Protection mode is not MaxProtection.

Answer: B

NEW QUESTION # 30
Your Data Guard configuration consists of these components and settings:
1. A primary database
2. A remote physical standby database
3. Real-time query is enabled
4. Redo transport mode is synchronous
5. Protection mode is maximum availability
6. The Data Guard broker is used
You notice that the standby destination fails to acknowledge reception of redo within net_timeout period of time.
Which is true in this scenario?

A. Synchronous redo transport mode connections to the standby database are terminated.
B. The protection mode will automatically change to Maximum Performance.
C. Real-time query will be disabled on the physical standby.
D. The physical standby database instance is shut down by the Data Guard broker.

Answer: A

Explanation:
In a Data Guard configuration where the protection mode is set to Maximum Availability and synchronous redo transport is enabled, if the standby destination fails to acknowledge the reception of redo within the net_timeout period, the primary database will terminate the synchronous redo transport mode connections to the standby database to protect the primary database from hanging (C). The primary database then operates in a Maximum Performance mode until the issue is resolved. This behavior ensures that the primary database can continue to process transactions even when the standby database is temporarily unavailable.
Reference:
The Oracle Data Guard Broker documentation and Oracle Data Guard Concepts and Administration guide detail the behavior of different protection modes and the response to network timeouts, including the fallback to asynchronous redo transport to maintain primary database availability.

NEW QUESTION # 31
Which two steps must be performed before running DUPLICATE TARGET DATABASE FOR STANDBY using RMAN?

A. Transfer a copy of the password file from the primary host to the standby host.
B. Run the nid utility to modify the DBID of the primary database.
C. Configure Oracle Net connectivity between the primary host and the standby host.
D. Create a standby control file.
E. Create an SPFILE for the standby database.

Answer: A,C

NEW QUESTION # 32
......

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