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Quiz 2026 1z0-076: Updated Oracle Database 19c: Data Guard Administration Latest
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Oracle 1z0-076 Exam Syllabus Topics:| Topic | Details | | Topic 1 | - 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 3 | - 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 4 | - 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 5 | - 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 6 | - 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 7 | - 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 8 | - 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 9 | - 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 10 | - 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 11 | - 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 12 | - 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.
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Oracle Database 19c: Data Guard Administration Sample Questions (Q91-Q96):NEW QUESTION # 91
Examine this query and its output:
Which two statements are true?
- A. The master observer is not connected to the database on which the query was executed.
- B. The master observer is connected to the database on which the query was executed.
- C. Cats is a bystander database.
- D. The master observer is currently running on ol7.example.com.
- E. The master observer is not running, but should run on ol7.example.com.
Answer: A,C
Explanation:
D: The database role indicated by FS_FAILOVER_STATUS as BYSTANDER implies that the database is a standby database in the Data Guard configuration. This means the database is neither a primary database nor an active failover target.
E: Since the FS_FAILOVER_OBSERVER_HOST column shows cats, it suggests that this is the host on which the observer would run. However, because the FS_FAILOVER_OBSERVER_PRESENT column is not shown, we cannot definitively state if the observer is currently connected or not. If FS_FAILOVER_OBSERVER_PRESENT is 'YES', the observer is connected, if 'NO', then it's not. In the absence of this column's output, the best assumption based on the available data is that the observer is not connected.
The output shows that the FS_FAILOVER_STATUS is BYSTANDER, which indicates that the database in question is not actively involved in a fast-start failover configuration as a primary or standby. It is in a bystander role, meaning that while it is part of a Data Guard configuration, it is neither a target for failover nor actively participating in failover operations. Additionally, FS_FAILOVER_OBSERVER_HOST shows
'cats', which indicates the host where the observer process is expected to run. However, since there is no information about the observer being present, we can infer that although 'cats' is designated for the observer to run, the observer is not currently connected to this database.
ReferencesOracle documentation on Data Guard configurations and the V$DATABASE view which provides information about the fast-start failover status and observer host.
NEW QUESTION # 92
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;
DGMGRL> edit configuration set protection mode as maxperformance;
DGMGRL> convert database sheep to physical standby; - B. DGMGRL> convert database sheep to physical standby;
- C. DGMGRL> convert database cats to physical standby;
- D. None, because you can directly failover to a Snapshot Standby Database.
- E. DGMGRL> convert database cats to physical standby;
Answer: B
NEW QUESTION # 93
Which THREE are always benefits of using a logical standby database?
- A. It can be used for reporting workloads requiring additional indexes or materialized views or both.
- B. It provides a disaster-recovery solution with switchover and failover options that can recover any data updated on the primary database.
- C. It can be used as an updatable database for Real Application Testing and then converted back to a standby database without affecting the updates.
- D. It can be used to replicate a single pluggable database (PDB) in a multitenant container database.
- E. It can be used for database rolling release upgrades.
- F. It can be used for testing patchsets without affecting the primary database.
Answer: A,B,E
Explanation:
Logical standby databases are a key feature of Oracle Data Guard and offer several distinct advantages, especially in terms of flexibility for reporting, upgrades, and disaster recovery:
* Disaster-recovery solution with switchover and failover options (A): Logical standby databases provide a robust disaster-recovery solution, ensuring that any data updated on the primary database can be recovered. They support both switchover and failover operations, allowing for smooth role transitions between the primary and standby databases.
* Used for reporting workloads requiring additional indexes or materialized views (B): Logical standby databases can be opened for read-write operations and can have additional indexes or materialized views that are not present in the primary database. This makes them ideal for offloading reporting and querying workloads from the primary database.
* Database rolling release upgrades (D): Logical standby databases can be used to perform rolling upgrades of the Oracle Database software. This allows the database to be upgraded with minimal downtime, as the standby database is upgraded first, followed by a switchover to make it the new
* primary.References:
* Oracle Data Guard Concepts and Administration Guide
* Oracle Database High Availability Overview
NEW QUESTION # 94
Which THREE statements are TRUE about the supported workload in Active Data Guard standby databases?
- A. You might have to use sequences with global temporary tables to support read-mostly applications by using Active Data Guard.
- B. Read-mostly reporting applications that use global temporary tables for storing temporary data can be offloaded.
- C. PL/SQL blocks that you run on Active Data Guard standby databases can be always redirected to and run on the primary database.
- D. The DML operations on a standby can be transparently redirected to and run on the primary database
- E. The DDL operations on private temporary tables are transparently redirected to the primary database.
Answer: A,B,D
Explanation:
In an Oracle Active Data Guard environment:
B: Read-mostly reporting applications that utilize global temporary tables to store session-specific data can be effectively offloaded to an Active Data Guard standby database, reducing the load on the primary database.
C: Sequences can be used with global temporary tables on an Active Data Guard standby database to support certain types of read-mostly applications, though some restrictions on sequence use may apply.
E: In Oracle Database 19c and later, DML redirection allows DML operations performed on an Active Data Guard standby database to be transparently redirected to the primary database. This is part of the DML Redirection feature.
Option A is incorrect because not all PL/SQL blocks run on an Active Data Guard standby database can be redirected to the primary database. Some PL/SQL executions, specifically those that would attempt to make changes to the database, are not supported on the standby.
Option D is incorrect because DDL operations on private temporary tables are not redirected; instead, private temporary tables are session-specific and are not persisted on disk, so they do not generate redo and are not applicable to an Active Data Guard standby.
NEW QUESTION # 95
Which three are true regarding prerequisites for a logical standby database as a disaster recovery solution?
- A. Ensure that flashback is enabled on the primary database.
- B. Ensure that no BFILE LOB data types are contained in the primary database.
- C. Ensure that no ROWID data types are contained in the primary database.
- D. Ensure that supplemental logging is enabled on the primary database.
- E. Do not perform any nologging operations on the primary.
Answer: B,D,E
NEW QUESTION # 96
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