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Oracle 1z0-076 Exam Syllabus Topics:

Topic
Details

Topic 1

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 2

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 3

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

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 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

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 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

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.

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Oracle Database 19c: Data Guard Administration Sample Questions (Q26-Q31):

NEW QUESTION # 26
Which four statements are true regarding SQL Apply filters for a logical standby database?

A. They can only be used to skip DML statements on a table.
B. They can be used to skip ALTER TABLE commands on specific tables.
C. They can be used to skip execution of DML triggers on a table while allowing the DML to execute.
D. They can be used to stop SQL apply if it encounters an error.
E. They can be used to skip ALTE1 STEM and ALTER DATABASE commands.
F. They can be used to skip all SQL statements executed on a specific pluggable database (PDB) within a standby multitenant container database (CDB).
G. They can be used to skip CREATE TABLE commands.

Answer: B,C,E,G

Explanation:
Based on the Oracle Database 19c documentation, the correct answers about SQL Apply filters for a logical standby database are:A. They can be used to skip execution of DML triggers on a table while allowing the DML to execute.B. They can be used to skip CREATE TABLE commands.C. They can be used to skip ALTER SYSTEM and ALTER DATABASE commands.G. They can be used to skip ALTER TABLE commands on specific tables.
Comprehensive Detailed Explanation:SQL Apply filters in a logical standby database can be set to control which SQL operations are applied to the standby. These filters allow for certain commands to be skipped, ensuring that they do not impact the standby database. For example, filters can be used to skip the execution of DML triggers to prevent them from firing during SQL Apply, while still allowing the underlying DML to be executed on the logical standby database. This is particularly useful when certain triggers are not desired to run in a standby environment. CREATE TABLE, ALTER SYSTEM, ALTER DATABASE, and specific ALTER TABLE commands can also be skipped using SQL Apply filters to prevent unwanted structural changes or administrative operations from affecting the logical standby database. These capabilities provide a level of control to ensure that the logical standby database reflects only the desired state of the primary database.
References:Oracle Database SQL Language Reference and Oracle Data Guard Concepts and Administration guide offer comprehensive details on the use of SQL Apply filters, including the range of SQL statements that can be influenced by these filters in a logical standby database environment.

NEW QUESTION # 27
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. You can specify only one standby database as the fast-start failover target.
D. Flashback Database must be enabled only on the Fast-Start Failover target standby database.
E. The maximum protection mode can be used, but with two or more standby databases.
F. The Data Guard environment must be managed by the Data Guard Broker.

Answer: A,C,F

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.References:
* Oracle Data Guard Concepts and Administration Guide
* Oracle Database High Availability Overview

NEW QUESTION # 28
Your Data Guard environment contains a four-instance RAC primary database whose SID is PROD and a RAC physical standby database whose std is PROD_SBY.
Examine the command executed on a node of the primary database cluster to create a service OLTPWORKLOAD that the applications will use to connect to the database when it is in the FRlMARYTclatabase role:
srvctl add service -db PROD -service oltpworkload -role PRIMARY -failovertype SESSION -failovermethod BASIC -failoverdelay 10 -failoverretry 150 The service is then started Consider this list of tasks:
1. On a node of the standby database cluster execute:
srvctl add service -db PROD_SBY -service oltpworkload -role PRIMARY -failovertype SESSION
-failovermethod BASIC -failoverdelay 10 -failoverretry 150
2. On the primary database, create the oltpworkload database service using the dbms_service.create_service procedure.
3. Configure tap for clients in the tnsnames.ora files.
4. Make sure clients use the OLTPWORKLOAD service to connect to the database instances.
5. On the standby database, create the oltpworkload database service using the dbms_service.create_servi;l procedure.
Identify the required steps to configure and use Transparent Application Failover (taf).

A. 1,3,4
B. 0
C. 3,4
D. 1
E. 2,3,4
F. 1.4

Answer: F

Explanation:
To set up Transparent Application Failover (TAF) in a Data Guard environment with RAC, you would need to:
* On a node of the standby database cluster, execute the srvctl command to add the oltpworkload service for the PRIMARY role (1): This prepares the standby cluster to provide the oltpworkload service in case a failover occurs, and the standby becomes the primary database.
* Make sure clients use the OLTPWORKLOAD service to connect to the database instances (4):
This ensures that client connections are directed to the correct service, which is managed by TAF and can fail over in case of a primary database outage.References:
* Oracle Real Application Clusters Administration and Deployment Guide
* Oracle Data Guard Concepts and Administration Guide

NEW QUESTION # 29
Examine the following parameter settings of the physical standby database:
* STANDBY_FILE_MANAGEMENT=AUTO
* ENABLED_PDBS_ON_STANDBY=<null>
During which TWO tasks are files automatically created in the physical standby database after structure changes on the primary database?

A. Creating a PDB from the existing PDB within the same CDB
B. Performing transportable tablespaces
C. Renaming a data file in the primary database
D. Adding or dropping a redo file group
E. Adding a data file or creating a tablespace

Answer: A,E

Explanation:
When STANDBY_FILE_MANAGEMENT is set to AUTO, the Oracle Data Guard automatically creates, deletes, and renames files on the standby database to match the changes made on the primary database. The tasks that lead to the automatic creation of files on the standby include:
* Adding a data file or creating a tablespace (C): When a new tablespace is created or a new data file is added on the primary database, the standby database automatically replicates this action, maintaining structural consistency with the primary database.
* Creating a PDB from the existing PDB within the same CDB (D): Creating a new Pluggable Database (PDB) within a Multitenant Container Database (CDB) on the primary database triggers an automatic creation of the corresponding PDB within the standby CDB.References:
* Oracle Data Guard Concepts and Administration Guide

NEW QUESTION # 30
Which three are prerequisites for using Data Guard Broker?

A. A statically defined listener end-point must be registered with the local listener on the servers hosting the standby database instances.
B. The primary and standby databases must run the same version of the Oracle Database server.
C. Network connectivity to the primary database instance must be defined on the servers hosting the standby database instances.
D. If any database in the configuration is a RAC database, then the broker configuration files must reside in shared storage accessible by all database instances for all databases in the broker configuration.
E. DG_BROKEB_START must be set to TRUE for a database instance before adding the database to the broker configuration.
F. The broker configuration files for a RAC database must reside in shared storage accessible by all the RAC database instances.

Answer: B,C,D

Explanation:
Data Guard Broker is a management tool that simplifies the configuration, management, and monitoring of Data Guard environments. The prerequisites for using Data Guard Broker include:
The primary and standby databases must run the same version of the Oracle Database server (A): This ensures compatibility between the primary and standby databases and enables seamless role transitions and data synchronization.
Network connectivity to the primary database instance must be defined on the servers hosting the standby database instances (B): Proper network connectivity is essential for communication between the primary and standby databases, allowing for the replication of data and the synchronization of changes.
If any database in the configuration is a RAC database, then the broker configuration files must reside in shared storage accessible by all database instances for all databases in the broker configuration (D): In Real Application Clusters (RAC) environments, shared storage ensures that all instances of the RAC database can access the broker configuration files, facilitating the management of the Data Guard environment across all instances.
Reference:
Oracle Data Guard Broker documentation
Oracle Real Application Clusters Administration and Deployment Guide

NEW QUESTION # 31
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