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Oracle 1z1-076 Exam Syllabus Topics:

Topic
Details

Topic 1

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 2

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 3

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 4

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 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 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 7

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 8

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 9

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 10

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.

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Oracle Database 19c: Data Guard Administration Sample Questions (Q22-Q27):

NEW QUESTION # 22
On your logical standby database, you specified these rules:

After completion of the weekend batch cycle you attempt to delete the SQL Apply filters:

Which is TRUE regarding the execution of the UNSKIP procedure?

A. It succeeds only if SQL apply is stopped before deleting the SQL Apply filter.
B. It succeeds only if all DML statements executed on the primary have been applied on the logical standby deleting the SQL Apply filter.
C. It deletes both the SQL Apply filters.
D. It succeeds but the SQL Apply filters are not deleted.
E. It returns an error because the syntax to delete a SQL Apply filter must specify the same object names as specified when the filter was added.

Answer: C

Explanation:
The execution of the UNSKIP procedure is designed to remove SQL Apply filters that have been previously set up on a logical standby database. Based on the provided statements, the UNSKIP procedure is directed to delete any SQL Apply filters for DML statements associated with objects in the 'HR' schema that start with 'EMP'. Since both SKIP procedures had the same schema name ('HR') and statement type ('DML'), and the UNSKIP procedure uses a wildcard (%) for the object name, it will successfully remove both of the SQL Apply filters for 'EMP_NEW' and 'EMP_OLD', as both object names match the pattern provided in the UNSKIP procedure.
Reference:
Oracle's Data Guard documentation and SQL Language Reference provide insights into managing SQL Apply filters on a logical standby database using the DBMS_LOGSTDBY package. This includes adding and removing filters through SKIP and UNSKIP procedures.

NEW QUESTION # 23
Which TWO statements correctly describe the behavior of Automatic Block Media Recovery in a Data Guard environment, for a corrupt block in the example tablespace encountered by a session logged in as the SH user?

A. A corrupt block on a standby database with Real-Time Query enabled, can be automatically recovered, using a block from the primary database.
B. A corrupt block on the primary database is automatically recovered, using a block from a flashback log from the primary database.
C. A corrupt block on the primary database is automatically recovered, using a block from a flashback log from a standby database with Real-Time Query enabled.
D. A corrupt block on a standby database with Real-Time Query enabled, is automatically recovered, using flashback logs from the standby database.
E. A corrupt block on the primary database can be automatically recovered, using a block from a standby database with Real-Time Query enabled.

Answer: B,E

Explanation:
Automatic Block Media Recovery can be a significant feature for maintaining data integrity within a Data Guard configuration.
* A corrupt block on the primary database can be automatically recovered, using a block from a standby database with Real-Time Query enabled (A): When a corrupted block is encountered on the primary database, Oracle can automatically replace it with a good block from the standby database where Real-Time Query is enabled, leveraging the standby as a source of good data.
* A corrupt block on the primary database is automatically recovered, using a block from a flashback log from the primary database (E): If a good block version is available in the flashback logs of the primary database, Automatic Block Media Recovery can use it to recover the corrupted block on the primary.References:
* Oracle Database Backup and Recovery User's Guide

NEW QUESTION # 24
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 network bandwidth between the primary and standby databases.
B. Increase the size of the buffer cache on the standby database instance.
C. Reduce I/O latency for the storage used by the primary database.
D. Change the protection mode to Maximum Performance.
E. Increase the number of standby redo log files on the primary database.
F. Change the protection mode to Maximum Protection.

Answer: A,C

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 # 25
Which three are prerequisites for enabling Fast-Start Failover?

A. Flashback Database must be enabled on both the primary database and the Fast-Start Failover target standby database.
B. The configuration must be operating in either Maximum Performance or Maximum Protection mode.
C. The Data Guard environment must be managed by the Data Guard Broker.
D. Flashback Database must be enabled only on the Fast-Start Failover target standby database.
E. You can specify only one standby database as the fast-start failover target.
F. The maximum protection mode can be used, but with two or more standby databases.

Answer: A,C,E

Explanation:
To enable Fast-Start Failover in a Data Guard environment, the following conditions must be in place:
The Data Guard environment must be managed by the Data Guard Broker (A): The Broker simplifies management tasks and is required to enable fast-start failover, which is an automatic failover mechanism provided by Data Guard.
You can specify only one standby database as the fast-start failover target (C): Fast-start failover is designed to fail over to a single, predetermined standby database, known as the target standby.
Flashback Database must be enabled on both the primary database and the Fast-Start Failover target standby database (F): Flashback Database provides a quick way to revert a database to a point in time before a logical or physical corruption or error occurred. It must be enabled on both the primary and target standby databases to allow for the possibility of reinstating the old primary as a standby after a failover.
Reference:
Oracle Data Guard Concepts and Administration Guide
Oracle Database High Availability Overview

NEW QUESTION # 26
Which TWO statements are true about Far Sync instances?

A. They work in Maximum Protection mode.
B. They work in Maximum Performance mode.
C. They work in Maximum Availability mode.
D. They do not work with Logical Standby databases.
E. They do not work with Snapshot Standby databases.

Answer: B,D

NEW QUESTION # 27
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