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[Hardware] 1z1-076 Dumps Guide & Reliable 1z1-076 Exam Book

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【Hardware】 1z1-076 Dumps Guide & Reliable 1z1-076 Exam Book

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Oracle 1z1-076 Exam Syllabus Topics:
TopicDetails
Topic 1
  • 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 2
  • 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 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 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
  • 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 7
  • 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 8
  • 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
  • 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 11
  • 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 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.

Oracle Database 19c: Data Guard Administration Sample Questions (Q48-Q53):NEW QUESTION # 48
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 size of the buffer cache on the standby database instance.
  • B. Change the protection mode to Maximum Protection.
  • C. Increase the number of standby redo log files on the primary database.
  • D. Increase the network bandwidth between the primary and standby databases.
  • E. Reduce I/O latency for the storage used by the primary database.
  • F. Change the protection mode to Maximum Performance.
Answer: D,E
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 # 49
Which three actions are performed by the START PLAN procedure of the DBMS ROLLING package?
  • A. creating a guaranteed restore point on the primary database
  • B. starting media recovery on all the Leading Group Standby databases
  • C. building a LogMiner dictionary on the primary database instance
  • D. converting the designated physical standby database into a logical standby database
  • E. creating a guaranteed restore point on the standby databases
  • F. switching the primary database to the logical standby role
Answer: A,C,E
Explanation:
The DBMS_ROLLING package facilitates a rolling upgrade process across a Data Guard configuration. The START PLAN procedure in particular handles several critical actions, including:
Creating a guaranteed restore point on the standby databases (B): This ensures that the standby databases can be reverted to their state before the rolling upgrade process in case of any issues.
Building a LogMiner dictionary on the primary database instance (C): This is necessary for logical standby databases to interpret redo data during the SQL Apply process.
Creating a guaranteed restore point on the primary database (D): Similar to the standby databases, this ensures that the primary database can be reverted to a known good state if necessary.
Reference:
Oracle Database PL/SQL Packages and Types Reference
Oracle Data Guard Concepts and Administration Guide

NEW QUESTION # 50
Your Data Guard environment consists of these components and settings:
A primary database supporting an OLTP workload
A remote physical standby database
Real-time query is enabled
The redo transport mode is set to SYNC
The protection mode is set to Maximum Availability
Which two statements are true regarding the DelayMins database property for the standby database?
  • A. It can only be enabled for a configuration in Maximum Performance mode.
  • B. It specifies a delay before the primary ships redo to the standby destination having DelayMins set.
  • C. It allows user errors on the primary to be recovered by using the physical standby database.
  • D. It enables you to bypass the default network timeout interval specified for the standby redo transport destination.
  • E. It can only be enabled for a configuration in Maximum Availability mode.
  • F. It allows logical corruptions on the primary to be recovered by using the physical standby database.
Answer: C,F

NEW QUESTION # 51
Your Data Guard environment has two remote physical standby databases.
Client applications use the local naming method to connect to the primary database instance.
You want applications to automatically connect to the new primary database instance in case of a switchover or a failover.
Which set of actions will fulfill this requirement?
  • A. Set the INSTANCE NAME parameter identically on all databases; modify the connection descriptor on client applications to include all the standby hosts and connect to the database instance using that service name.
  • B. Set DB_NAME and DB_UNIQUE_NAME identically on all databases; modify the connection descriptors on client applications to include all the standby hosts and connect to the database instance using that service name.
  • C. Create a database service on the primary database that is started automatically by a trigger, when the database role is PRIMARY; modify the connection descriptors used by client applications to include all the standby hosts and connect to the database instance using that service name.
  • D. Set the LOCAL_LISTENER parameter for all the database instance to register services with the default listener on the primary database host.
Answer: C
Explanation:
For seamless client redirection in a Data Guard environment, the following steps should be taken:
Create a database service on the primary database that is started automatically by a trigger when the database role is PRIMARY (B): This ensures that the service is only available on the primary database and is automatically started after a role transition due to switchover or failover.
Modify the connection descriptors used by client applications to include all the standby hosts and connect to the database instance using that service name (B): Client applications use the connection descriptors that include all potential primary hosts (i.e., the current primary and all standbys). This enables clients to connect to whichever database is currently acting as the primary using the service name.
Reference:
Oracle Data Guard Concepts and Administration Guide
Oracle Real Application Clusters Administration and Deployment Guide

NEW QUESTION # 52
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. Many SQL apply operations do full table scans
  • D. An increased number of bulk updates on the primary
  • E. An undersized undo tablespace on the logical standby
  • F. An increased number of bulk inserts on the primary
Answer: B,C,D,E
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 # 53
......
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