1Z0-076 Oracle Database 19c: Data Guard Administration Exam

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Oracle Certified Professional, Oracle Database 19c: Data Guard Administrator

Format: Multiple Choice
Duration: 120 minutes
Number of Questions: 74
Passing Score: 61%
Validation: Exam has been validated for product version Oracle Database 19c.

Prepare to pass exam: 1Z0-076

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The Oracle Certified Professional, Oracle Database 19c: Data Guard Administrator certification is for Database Systems Administrators with responsibility for Disaster Recovery. Ideal candidates have 4 to 5 years of Database Administration with 2 to 3 years of Data Guard.

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Preparing for the required exam gives you a thorough knowledge of Oracle Data Guard Administration. You gain skills and knowledge on Oracle Data Guard concepts, configuration, management, optimization and monitoring, data protection, HA, and disaster recovery. By passing this exam, a certified individual shows you have the ability to create a High Availability or Disaster Recovery solution for an Oracle Database ecosystem and gain knowledge of Workload offload capabilities available in Data Guard.

This certification challenges your knowledge and pushes the limits of your database skills and increases your value to your company and in the marketplace.

Take recommended training
Complete one of the courses below to prepare for your exam (optional):

Oracle Database 19c: Data Guard Administration Workshop

Additional Preparation and Information

A combination of Oracle training and hands-on experience (attained via labs and/or field experience), in the learning subscription, provides the best preparation for passing the exam.

Review exam topics

Oracle Data Guard Basics
Describe the Architecture of Oracle Data Guard
Explain the applicability between physical and logical standby and snapshot databases
Explain the benefits of implementing Oracle Data Guard
Explain Data Guard use with the Oracle Multi-tennant databases

Managing Oracle Net Services in a Data Guard Environment
Understand the basics of Oracle Net Services
Implement Data Guard best-practice solutions in the networking setup

Creating a Physical Standby Database by Using SQL and RMAN Commands
Configure the primary database and Oracle Net Services to support the creation of the physical standby database and role transition
Create a physical standby database by using the DUPLICATE TARGET DATABASE FOR STANDBY FROM ACTIVE DATABASE RMAN command
Describe the Database Nologging Enhancements
Demonstrate the usage of the PL/SQL procedure DBMS_DBCOMP.DBCOMP
Explain the creation of a standby database by using DBCA

Using Oracle Active Data Guard:Supported Workloads in Read-Only Standby Databases
Perform Real-Time query to access data on a physical standby database
Describe the supported workload in Active Data Guard (Read-Only) instances

Creating and Managing a Snapshot Standby Database
Create a snapshot standby database to meet the requirement for a temporary, updatable snapshot of a physical standby database
Convert a snapshot standby database back to a physical standby database

Creating a Logical Standby Database
Determine when to create a logical standby database
Create a logical standby database
Manage SQL Apply filtering

Oracle Data Guard Broker Basics
Describe the Data Guard broker architecture
Describe the Data Guard broker components
Explain the benefits of the Data Guard broker
Describe Data Guard broker configurations

Creating a Data Guard Broker Configuration
Create a Data Guard broker configuration
Manage the Data Guard broker configuration
List the new Data Guard Broker commands

Monitoring a Data Guard Broker Configuration
Use Enterprise Manager to manage your Data Guard configuration
Invoke DGMGRL to manage your Data Guard configuration
List the new Data Guard Broker VALIDATE commands

Configuring Data Protection Modes
Describe the data protection modes
Change the data protection mode of your configuration

Performing Role Transitions
Explain the database roles
Perform a switchover
Perform a failover
Explain how to keep physical standby sessions during role transition

Using Flashback Database in a Data Guard Configuration
Configure Flashback Database
Explain the advantages of using Flashback Database in a Data Guard configuration
Explain the functionality of replicated restore points
Explain the functionality of automatic flashback

Enabling Fast-Start Failover
Configure fast-start failover
View information about the fast-start failover configuration
Manage the observer
Perform role changes in a fast-start failover configuration
Manually reinstate the primary database

Backup and Recovery Considerations in an Oracle Data Guard Configuration
Use Recovery Manager (RMAN) to back up and restore files in a Data Guard configuration
Offload backups to a physical standby database
Enable RMAN block change tracking for a physical standby database
Recover your primary database over the network
Synchronize Standby Database from Primary Database with one command
Using Automatic Block Media Recovery

Patching and Upgrading Databases in a Data Guard Configuration
Patch and upgrade databases using traditional patch methods
Perform rolling upgrades

Optimizing and Tuning a Data Guard Configuration
Monitor configuration performance
Optimize redo transport for best performance
Optimize SQL Apply
Describe Tunable Automatic Outage Resolution
List Diagnostic Tools in Active Data Guard (Read-Only) environment

Managing Physical Standby Files After Structural Changes on the Primary Database
Describe the primary database changes that may or may not require manual intervention at a physical standby database.

Using Oracle Active Data Guard: Far Sync and Real-Time Cascading
Use Far Sync to extend zero data loss protection for intercontinental configurations
Describe how to create a far sync instance by using RMAN
Describe the Real-Time Cascading

Enhanced Client Connectivity in a Data Guard Environment
Configure client connectivity in a Data Guard configuration
Implement failover procedures to automatically redirect clients to a new primary database
Using Application Continuity in a Data Guard Environment

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Sample Question and Answers

QUESTION 1
Which two are true about database roles in an Oracle Data Guard configuration?

A. A Physical Standby Database can be converted into a Logical Standby Database.
B. A Snapshot Standby Database can be a fast-start failover target.
C. A Logical Standby Database can be converted to a Snapshot Standby Database.
D. A Logical Standby Database can cascade redo to a terminal destination.
E. A configuration consisting only of a primary and one or more physical standby databases can support a rolling release upgrade.

Answer: A, E

Explanation:
A Physical Standby Database can indeed be converted into a Logical Standby Database, providing
flexibility in a Data Guard configuration. This allows for the database to switch roles and supports SQL
apply operations, enabling more granular control over the data and transactions being replicated and
applied. Additionally, having a configuration with a primary database and one or more physical
standby databases allows for rolling upgrades to be performed. This means that each database in the
Data Guard configuration can be upgraded in a phased manner, minimizing downtime and ensuring
high availability during the upgrade process .

QUESTION 2
You must design an Oracle Data Guard configuration for a DSS database that meets these permanent requirements:
1. Creating and maintaining bitmap indexes should not impact the performance of the primary database.
2. Creating and maintaining materialized views should not impact the performance of the primary database.
Additionally, there are these requirements, only one of which is ever done at any one time:
1. It should be possible to apply designated patches with a minimum amount of downtime.
2. Upgrading to a new database release should be performed with the least possible amount of downtime.
3. New application software releases should be tested against an exact and up-to-date replica of the primary database.

Which configuration meets these requirements with the fewest of databases?

A. a primary database with one logical standby database
B. a primary database with two logical standby databases
C. a primary database with one physical standby database
D. a primary database with two physical standby databases
E. A primary database with one logical and one physical standby database

Answer: A

Explanation:
Logical standby databases allow the execution of DDL and DML operations, which makes them
suitable for maintaining bitmap indexes and materialized views without affecting the performance of
the primary database .
Logical standby databases can be used for performing rolling upgrades and patching with minimum
downtime, meeting another requirement .
They also enable the testing of new application software releases against an up-to-date replica of the
primary database, fulfilling the last requirement.
Other configurations involving physical standby databases or combinations of logical and physical
standby databases might not meet all the specified requirements as efficiently or with the same level
of performance isolation for the primary database.

QUESTION 3
You created two remote physical standby databases using SQL and RMAN.
The primary database is a four-instance RAC database and each physical standby database has two instances.
Roles-based services are used for client connectivity and have been defined in the Grid Infrastructure.
Consider these operational requirements:
The ability to manage multiple standby databases with a single tool
The simplification of switchovers, failovers, reinstatements, and conversions to and from snapshot standby databases
The automation of failovers to a specified target standby database
Which TWO tools can be used to fulfill these requirements7

A. RMAN
B. SQL*Plus
C. CRSCTL
D. Enterprise Manager Cloud Control
E. DGMGRL
F. SRVCTL
G. GDCCTL

Answer: D, E

Explanation:
Enterprise Manager Cloud Control provides a graphical interface to manage multiple standby
databases, simplify switchovers and failovers, and automate failover processes to a specified target
standby database. It offers a comprehensive view and control over the Data Guard configuration,
making complex operations more manageable.
DGMGRL is a command-line tool specifically designed for managing Data Guard configurations. It
allows the administration of multiple standby databases, simplifies the execution of switchovers and
failovers, reinstatements, and conversions to and from snapshot standby databases, and supports
the automation of failover processes to a specified standby database.
Other options like RMAN, SQL*Plus, CRSCTL, SRVCTL, and GDCCTL do not provide the same level of
integrated management functionality for Data Guard environments as Enterprise Manager Cloud
Control and DGMGRL.

QUESTION 4
The Oracle database 19c Observer is currently running on host1 and you wish to have it running on host2.
Examine this list of possible steps:
1) Stop the observer on host1
2) Disable Fast-Start Failover
3) Update the broker configuration with the new observer hostname
4) Enable Fast-Start Failover
5) Start the Observer on host2

Which contains the minimum required steps to move the observer to host2?

A. Execute tasks 1 and 5
B. Execute only task 5
C. Execute tasks 1, 3, and 5
D. Execute tasks 1, 2, 3, 4, and 5

Answer: C

Explanation:
Stop the Observer on host1 to ensure that there are no conflicts between the instances of the
Observer running on different hosts.
Update the Data Guard Broker configuration with the new hostname for the Observer. This step is
crucial to redirect the Data Guard Broker to communicate with the Observer on the new host.
Start the Observer on host2 to resume its operations in the new environment.
Disabling and re-enabling Fast-Start Failover (steps 2 and 4) are not strictly necessary for moving the
Observer to a new host. These steps would be more relevant if changes to the configuration of Fast-
Start Failover itself were required, which is not the case when simply relocating the Observer.

QUESTION 5
Examine this query and its output:
Which two statements are true?

A. The master observer is connected to the database on which the query was executed.
B. The master observer is currently running on ol7.example.com.
C. The master observer is not running, but should run on ol7.example.com.
D. Cats is a bystander database.
E. The master observer is not connected to the database on which the query was executed.

Answer: D, E

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.

Reference:
Oracle documentation on Data Guard configurations and the V$DATABASE view which provides
information about the fast-start failover status and observer host.

QUESTION 6
Which three statements are true¦¦. With no Oracle Streams or Goldengate configured?

A. It is recommended to have them on the…
B. Only standby databases can write redo….
C. The LGWR process writes to them on ….
D. They are required on a logical standby for real-time apply
E. They are required on a physical standby for real-time apply.
F. They are required only for synchronous redo transport

Answer: CDE