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Oracle 1z1-076 Valid Test Testking - 1z1-076 Dumps Download

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Oracle 1z1-076 Exam Syllabus Topics:
TopicDetails
Topic 1
  • 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 2
  • 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 5
  • 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 6
  • 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 7
  • 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 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
  • 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 10
  • Managing Oracle Net Services in a Data Guard Environment: The section focuses on Oracle Net Services and its role in Data Guard networking setup.

Oracle Database 19c: Data Guard Administration Sample Questions (Q97-Q102):NEW QUESTION # 97
Which three are true about using RMAN in a Data Guard environment?
  • A. Backups of archived redo logs taken on a physical standby are interchangeable with a primary.
  • B. Backups of control files taken on a physical standby are not interchangeable with a primary.
  • C. A recovery catalog is required when RMAN is used to take backups from a logical standby database in a Data Guard configuration if you plan to recover the primary using those backups.
  • D. Backups of data files taken on a physical standby are interchangeable with a primary.
  • E. A recovery catalog is required when RMAN is used to take backups from a physical standby database if you plan to recover the primary using those backups.
Answer: A,B,D

NEW QUESTION # 98
Which THREE statements are TRUE about Global Sequences when connected to a physical standby database with Real-Time Query enabled?
  • A. Their usage may have a performance impact on the physical standby database if the CACHE size is too small.
  • B. Their creation requires that a LOG archive_dest_n parameter be defined in the standby that points back to the primary.
  • C. Their usage will always have a performance impact on the primary database.
  • D. They must have the NOORDEK and CACHE options set.
  • E. If the CACHE option is set then the size of the cache must be at least 100.
Answer: A,C,D
Explanation:
Global Sequences are Oracle sequences that generate unique values across multiple instances in an Oracle RAC or a Data Guard configuration. Regarding their behavior and performance when connected to a physical standby database with Real-Time Query enabled:
A: The usage of Global Sequences can indeed have a performance impact on the primary database due to the need to generate unique values that are consistent across both primary and standby databases.
D: The performance impact on the physical standby database may occur if the CACHE size is too small. This is because the standby database will frequently have to access the primary database to replenish the cache, which can increase the load and potentially lead to performance degradation.
E: Global Sequences should have the NOORDER and CACHE options set. The NOORDER option ensures that sequence numbers are provided without guaranteeing sequence order, thus improving scalability and performance. The CACHE option is used to specify how many sequence values will be held in memory for faster access.
Option B is incorrect as the LOG_ARCHIVE_DEST_n parameter's definition for standbys pointing back to the primary does not directly pertain to the creation of sequences.
Option C is incorrect because there is no requirement that the size of the cache for a sequence must be at least 100. The CACHE size can be set to a different number based on specific use cases or performance considerations.

NEW QUESTION # 99
Which TWO are benefits of using Transaction Guard in a Data Guard environment?
  • A. It provides application continuity by replaying transactions interrupted by a failover or a switchover
  • B. It protects against logical corruptions being replicated to standby databases.
  • C. It protects against recoverable errors during a planned or an unplanned outage of a primary database.
  • D. It provides application continuity by rolling back uncommitted transactions interrupted by a failover or switchover.
  • E. It protects against user errors being replicated to standby databases.
Answer: C,D
Explanation:
Transaction Guard provides benefits in terms of transaction consistency and recovery in a Data Guard environment:
* It provides application continuity by rolling back uncommitted transactions interrupted by a failover or switchover (B): Transaction Guard ensures that any uncommitted transactions at the time of an outage are rolled back consistently, thus preserving the integrity of the application's data and state.
* It protects against recoverable errors during a planned or an unplanned outage of a primary database (D): Transaction Guard offers protection against errors that can occur during outages, allowing applications to resume operations more quickly and reliably after recovery.References:
* Oracle Database High Availability Overview
* Oracle Real Application Clusters Administration and Deployment Guide

NEW QUESTION # 100
Your Data Guard environment has a remote physical standby database with real-time query enabled, which is used for reporting, and a logical standby database used for DSS reporting.
Switchovers or failovers are possible due to testing or in case of a disaster.
Clients use local TNSNAMES.ORA files to define connection strings to the database instances.
Which three will prevent clients from connecting to the wrong database instances?
  • A. The LOCAL_LISTENER parameter on the primary database instance must always be set.
  • B. The client applications must use the correct TNS entries when requesting connections to the database instances.
  • C. Client TNS entries for the databases use the correct service names for the intended service.
  • D. A service name is registered with the local listener of each database instance.
  • E. The standby database services must be defined statically with the Listeners running on the standby database hosts.
  • F. Oracle Net connectivity to the primary database instance must be established on all the standby database instances.
  • G. The DB_NAME and DB_UNIQUE_NAME parameters must be set to the same value for all the databases in the Data Guard environment.
Answer: B,C,E
Explanation:
Based on Oracle Database 19c: Data Guard Administration documents, the three measures that can prevent clients from connecting to the wrong database instances during switchovers, failovers, or regular operations in a Data Guard environment are:
B . The standby database services must be defined statically with the Listeners running on the standby database hosts.
D . The client applications must use the correct TNS entries when requesting connections to the database instances.
E . Client TNS entries for the databases use the correct service names for the intended service.
In an Oracle Data Guard configuration, correctly configuring Oracle Net Services (including TNS entries and listeners) is crucial for ensuring that clients connect to the appropriate database instance, whether it's the primary or standby. Defining services on the standby database and associating them with listeners ensures that client applications can connect to the standby when needed, especially useful in a role transition or when the standby is open for read-only access or real-time query. It's essential that TNS entries used by client applications specify the correct service names that correspond to the intended database roles, such as primary or standby. This setup facilitates seamless connectivity to the appropriate instance based on the role, especially critical during switchovers and failovers when the roles of the databases change.
Reference:
Oracle's Data Guard concepts and administration guide provides extensive information on configuring network services for Data Guard environments, ensuring that applications connect to the correct database instance based on the current role of the databases in the Data Guard configuration.

NEW QUESTION # 101
Which two statements are true regarding Data Guard environments in an Oracle Muti-tenant architecture?
  • A. Standby redo log files are required for each pluggable database that is protected with Data Guard.
  • B. The Data Guard broker may be used for multi-tenant databases.
  • C. PDB_FILE_NAME CONVERT must be set to enable creation of standby databases if they are created on the same host as the primary.
  • D. A Data Guard environment with a multi-tenant primary database can operate in any Protection mode.
  • E. Different redo transport methods can be configured for different pluggable databases within one Data Guard environment.
Answer: B,D
Explanation:
Oracle Multi-tenant architecture and Data Guard have several interactions, but specific aspects hold true in such environments:
* The Data Guard broker may be used for multi-tenant databases (B): Data Guard Broker simplifies the management and monitoring of Data Guard configurations and is fully compatible with the Oracle Multi-tenant architecture, allowing for easy management of Data Guard configurations that include multi-tenant container databases (CDBs) and their pluggable databases (PDBs).
* A Data Guard environment with a multi-tenant primary database can operate in any Protection mode (E): Data Guard can be configured to operate in Maximum Performance, Maximum Availability, or Maximum Protection mode, regardless of whether the primary database is a multi-tenant database.
This flexibility ensures that Data Guard can meet various data protection and availability requirements in multi-tenant environments.References:
* Oracle Data Guard Broker documentation
* Oracle Multitenant Administrator's Guide

NEW QUESTION # 102
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