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[General] 1z0-076 Study Test - 1z0-076 New Dumps Sheet

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【General】 1z0-076 Study Test - 1z0-076 New Dumps Sheet

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Oracle 1z0-076 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
  • 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 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 5
  • 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 6
  • 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 7
  • 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 8
  • 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 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 11
  • 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 12
  • 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 13
  • 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 14
  • 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.

Oracle Database 19c: Data Guard Administration Sample Questions (Q29-Q34):NEW QUESTION # 29
Your Data Guard environment consists of these components and settings:
1. A primary database
2. Two remote physical standby databases
3. The redo transport mode is set to sync
4. Real-time query is enabled for both standby databases
5. The DB_BLOCK_CHECKING parameter is set to TRUE on both standby databases You notice an increase in redo apply lag time on both standby databases.
Which two would you recommend to reduce the redo apply lag on the standby databases?
  • A. Decrease the redo log file size on the primary database.
  • B. Increase the number of standby redo log files on the standby databases.
  • C. Increase the size of the buffer cache on the physical standby database instances.
  • D. Increase the size of standby redo log files on the standby databases.
  • E. Lower DB_BLOCK_CHECKING to MEDIUM or low on the standby databases.
Answer: D,E
Explanation:
To reduce the redo apply lag on standby databases, one could increase the size of the standby redo log files.
Larger redo log files can accommodate more redo data, which may reduce the frequency of log switches and allow for more continuous application of redo data. Additionally, lowering the DB_BLOCK_CHECKING parameter to MEDIUM or LOW on the standby databases can help improve redo apply performance. High block checking can impose additional CPU overhead during the application of redo data, potentially increasing apply lag times. By reducing the level of block checking, you can lessen this overhead and help reduce the apply lag .

NEW QUESTION # 30
You notice that the SQL apply lag on your logical standby database has increased but the redo transport lag has not.
Which four could be reasons for the increase in SQL apply lag?
  • A. The standby redo log files are undersized on the primary database
  • B. An undersized shared pool
  • C. An undersized undo tablespace on the logical standby
  • D. Many SQL apply operations do full table scans
  • E. An increased number of bulk inserts on the primary
  • F. An increased number of bulk updates on the primary
Answer: B,C,D,F
Explanation:
The SQL apply lag on a logical standby database can be caused by several factors:
A: An undersized undo tablespace can lead to delays in SQL apply operations as it may not be able to handle the volume of undo records generated by the SQL apply process.
B: SQL apply operations that do full table scans can consume significant system resources, potentially leading to higher apply lag.
C: An increased number of bulk updates on the primary database may generate a large volume of redo data, which can cause apply lag if the logical standby cannot apply the changes quickly enough.
F: An undersized shared pool may affect the parsing and execution of SQL statements by SQL apply, which can contribute to the apply lag.
Option D is less likely to be a direct cause of SQL apply lag compared to bulk updates, as inserts generate new data rather than modifying existing data, which SQL apply can typically handle more efficiently.
Option E is incorrect because the size of the standby redo log files on the primary database impacts redo transport lag, not SQL apply lag.

NEW QUESTION # 31
A customer asks you to propose the most appropriate solution for this set of requirements:
We need a disaster recovery solution that enables us to fail over from our production database with zero data loss.
We want to generate reports from the proposed standby database at the same time that it is used for data protection.
Developers may need to test occasionally on a copy of the live database Which TWO solutions would you recommend?
  • A. A physical standby database with real-time apply enabled
  • B. A snapshot standby database with synchronous redo transport
  • C. A physical standby database with real-time query enabled
  • D. A logical standby database with real-time apply enabled
  • E. A logical standby database with real-time query enabled
Answer: C,E

NEW QUESTION # 32
You are licensed to use Oracle Active Data Guard.
Which TWO statements are true after enabling block change tracking on a physical standby database?
  • A. It starts the CTWR process on the primary database instance.
  • B. It allows fast incremental backups to be taken on the primary database.
  • C. It allows fast incremental backups to be offloaded to a snapshot standby database, when the physical standby database is converted.
  • D. It starts the RVWR process on the physical standby database instance.
  • E. It allows fast incremental backups to be offloaded to the physical standby database.
  • F. It starts the CTWR process on the physical standby database instance.
Answer: D,E
Explanation:
Block change tracking is a feature that enhances the efficiency of incremental backups by recording changed blocks in a tracking file. When used with Oracle Active Data Guard:
* It starts the RVWR process on the physical standby database instance (A): When block change tracking is enabled on a physical standby database, the Recovery Writer (RVWR) process is initiated.
This process is responsible for recording the changes to blocks in the block change tracking file, which is then used to optimize incremental backups.
* It allows fast incremental backups to be offloaded to the physical standby database (E): With block change tracking enabled on the physical standby database, fast incremental backups can be offloaded from the primary database. This reduces the workload on the primary database and utilizes the standby database for backup operations, improving overall system performance and efficiency.References:
* Oracle Database Backup and Recovery User's Guide
* Oracle Active Data Guard documentation

NEW QUESTION # 33
Which TWO are benefits of using Transaction Guard in a Data Guard environment?
  • A. It provides application continuity by rolling back uncommitted transactions interrupted by a failover or switchover.
  • B. It provides application continuity by replaying transactions interrupted by a failover or a switchover
  • C. It protects against logical corruptions being replicated to standby databases.
  • D. It protects against user errors being replicated to standby databases.
  • E. It protects against recoverable errors during a planned or an unplanned outage of a primary database.
Answer: A,E
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.
Reference:
Oracle Database High Availability Overview
Oracle Real Application Clusters Administration and Deployment Guide

NEW QUESTION # 34
......
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