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Exam : 1z1-076
Title : Oracle Database 19c: Data
Guard Administration
Vendor : Oracle
Version : DEMO
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NO.1 You are using Data Guard in conjunction with Global Database Services.
You have a Data Guard Broker configuration called Sales and a GDS pool called Prod.
Which three are true concerning the management of the broker configuration when using GDS?
A. DGMGRL may be used to add the Sales configuration to the Prod pool in gds.
B. Performing a role change with DGMGRL automatically notifies GDS which in turn activates the
appropriate services.
C. DGMGRL may be used to add a single database to the Sales configuration even if Sales is a
member of the Prod pool.
D. Adding a database to the Sales configuration with DGMGRL automatically adds the database to
the Prod Pool.
E. Adding a database to the Sales configuration with DGMGRL requires that the Sales configuration
be disabled first. It must then be enabled after the new database is added to the configuration.
Answer: A B C
Explanation:
In the context of Oracle Data Guard and Global Database Services (GDS):
* DGMGRL may be used to add the Sales configuration to the Prod pool in gds (A): Data Guard
Broker's command-line interface DGMGRL can be utilized to manage configurations with GDS,
allowing the addition of Data Guard Broker configurations to GDS pools.
* Performing a role change with DGMGRL automatically notifies GDS which in turn activates the
appropriate services (B): When a role change is executed using DGMGRL, GDS is automatically
notified, and it then activates the services that are appropriate for the new database roles.
* DGMGRL may be used to add a single database to the Sales configuration even if Sales is a member
of the Prod pool (C): DGMGRL provides the capability to manage individual databases within a broker
configuration, including adding databases to a configuration that is already part of a GDS
pool.References:
* Oracle Data Guard Broker documentation
* Oracle Global Data Services documentation
NO.2 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. Performing transportable tablespaces
B. Adding or dropping a redo file group
C. Adding a data file or creating a tablespace
D. Creating a PDB from the existing PDB within the same CDB
E. Renaming a data file in the primary database
Answer: C D
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,
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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
NO.3 Which TWO are TRUE about offloading backups to a physical standby database in a Data Guard
environment?
A. The standby database must be registered in an RMAN catalog after the primary database has been
registered.
B. The standby database can not be registered in an RMAN catalog if the primary database has not
been registered.
C. Backups of the standby control file taken while connected to the catalog where the database is
registered, may be used to restore the control file on the primary database.
D. The standby database must be registered in an RMAN catalog before the primary database has
been registered.
Answer: A C
Explanation:
In a Data Guard environment, offloading backups to a physical standby database has certain
requirements:
* A: Once the primary database is registered in an RMAN catalog, the standby database can also be
* registered. This allows RMAN to manage backups coherently across both databases and leverage
the standby database for backup purposes without interfering with the primary database's workload.
* C: Backups of the standby control file taken while connected to the catalog where the database is
registered can be used to restore the control file on the primary database. This ensures that backup
metadata is consistent across the Data Guard configuration.
Options B and D are incorrect because there is no strict requirement for the order in which the
primary and standby databases must be registered in an RMAN catalog. However, it is a common
practice to register the primary database first.
References: The Oracle Database Backup and Recovery User's Guide provides detailed procedures on
how to manage RMAN backups in a Data Guard environment, including offloading backups to a
standby database.
NO.4 Suppose that you manage the following databases in your environment:
* boston: Primary database with a single PDB called DEVI
* london: Physical standby database protecting the PDB called DEVI
* orcl: Stand-alone database with a single PDB called PDB1 as a remote clone source You are planning
to run the following command to create a remote clone in the primary database (boston) using pdbi
in orcl:
Which are the THREE prerequisites for automating instantiation of the PDB in the standby database
(london)?
A. Open PDBI (remote clone source) in Read Only.
B. Open PDBI (remote clone source) in Read Write.
C. Set STANDBY_PDB_SOURCE_FILE_DIRECTORY to <location of the PDB> in the london database.
D. Set standby_pdb_source_file_dblink to clone_link in the london database.
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E. Enable Active Data Guard in the _ondon database.
F. Set STANDBY_FILE_MANAGEMENT to auto in the london database.
Answer: A C F
Explanation:
To automate the instantiation of a PDB in the standby database after creating a remote clone in the
primary database, certain conditions must be met:
* Open PDBI (remote clone source) in Read Only (A): The source PDB from which the clone is created
must be open in read-only mode to ensure a consistent state during cloning.
* Set STANDBY_PDB_SOURCE_FILE_DIRECTORY to <location of the PDB> in the london database (C):
This parameter specifies the location on the standby database where the files from the source PDB
should be placed.
* Set STANDBY_FILE_MANAGEMENT to auto in the london database (F): This parameter automates
the management of file changes on the standby database when structural changes occur on the
primary database, ensuring that the clone operation is reflected automatically on the standby.
References:
* Oracle Multitenant Administrator's Guide
* Oracle Data Guard Broker documentation
NO.5 Which TWO statements are true about Real-Time Query?
A. Setting standby_max_data_delay=0 requires synchronous redo transport.
B. Real-Time Query has no limitations regarding the protection level of the Data Guard environment.
C. Disabling Real-Time Query prevents the automatic start of redo apply when a physical standby
databases opened read only.
D. Real-Time Query sessions can be connected to a Far Sync instance.
E. A standby database enabled for Real-Time Query cannot be the Fast-Start Failover target of the
Data Guard configuration.
Answer: A C
Explanation:
Real-Time Query is a feature that allows queries to be run on a physical standby database while it is
applying redo data. The relevant truths about it are:
* Setting standby_max_data_delay=0 requires synchronous redo transport (A): For the real-time
apply feature to function with no data delay (zero delay), synchronous redo transport must be used.
This setting ensures that the data on the standby database is as current as possible before queries
are executed against it.
* Disabling Real-Time Query prevents the automatic start of redo apply when a physical standby
database is opened read-only (C): If Real-Time Query is disabled, opening the standby database in
read-only mode will not start the redo apply process automatically. Redo apply needs to be manually
started to synchronize the standby database with the primary.References:
* Oracle Data Guard Concepts and Administration Guide
NO.6 Which four requirements can be met by deploying a logical standby database?
A. Support for workloads requiring additional materialized views.
B. It must have the same physical structure as the primary database.
C. It can be used to create additional tables.
D. It must provide a disaster-recovery solution that protects all data with capability of performing
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switchovers and failovers.
E. It can be used for Real Application Testing without affecting the disaster recovery capabilities.
F. Support for workloads requiring additional indexes.
G. It can be used to create additional schemas.
Answer: A C E F
Explanation:
A logical standby database is part of Oracle Data Guard and allows the standby database to be open
for read-write operations, providing additional flexibility. The requirements met by a logical standby
database include:
* Support for workloads requiring additional materialized views (A): Logical standby databases can
support materialized views, allowing for complex data summarization and reporting workloads.
* It can be used to create additional tables (C): Unlike physical standby databases, logical standby
databases allow for the creation of additional tables that do not exist in the primary database,
enabling custom workloads and reporting.
* It can be used for Real Application Testing without affecting the disaster recovery capabilities (E):
Logical standby databases can be used to test application changes, patches, and upgrades while still
maintaining their role as part of the disaster recovery strategy.
* Support for workloads requiring additional indexes (F): Logical standby databases allow for the
creation of additional indexes to optimize query performance for reporting and analytical workloads.
References:
* Oracle Data Guard Concepts and Administration
* Oracle Database High Availability Overview
NO.7 Examine the fast-start failover configuration:
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A. A failover may occur if the observer has lost connectivity to the primary database, even if the Fast-
Start Failover target standby database has a good connection to the primary database
B. If South_Sales develops a problem and cannot be the target of a failover, the broker automatically
changes the fast-start failover target to one of the other candidate targets.
C. The observer will initiate a failover when the primary database is unable to produce local archived
redo log files.
D. You must disable fast-start failover first to change the fast-start failover target to East sales.
E. The observer is running.
Answer: A C E
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