Oracle 1z1-076 Practice Test Pdf Exam Material [Q30-Q45]

Oracle 1z1-076 Practice Test Pdf Exam Material

1z1-076 Answers 1z1-076 Free Demo Are Based On The Real Exam

Oracle 1z1-076 Exam Syllabus Topics:

Topic	Details
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	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 3	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 4	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 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	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 7	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.

 

NEW QUESTION # 30
Attempting to start the observer raises an error:
DGMGRL> start observer;
DGM-16954: Unable to open and lock the Observer configuration file
Failed.
Identify two possible ways to start the observer successfully.

• A. Create a broker configuration and enable Fast-Start Failover before starting the observer.
• B. Enable Fast-Start Failover before starting the observer.
• C. Start the observer using a different observer configuration file.
• D. Set the ObserverOverride property to TRUE before starting the observer.
• E. Start the observer in a different working directory.

Answer: C,E

NEW QUESTION # 31
Which three can be done using Data Guard Broker?

• A. Monitoring and managing redo transport services, and log apply services.
• B. Create a new physical standby database.
• C. Converting physical standby databases to snapshot standby databases.
• D. Define logical standby database skip rules.
• E. Configuring the standby control file, server parameter file, and data files for a standby database.
• F. Automating failover to a specified target standby database.

Answer: B,C,F

NEW QUESTION # 32
Which THREE statements are TRUE about the supported workload in Active Data Guard standby databases?

• A. The DML operations on a standby can be transparently redirected to and run on the primary database
• B. Read-mostly reporting applications that use global temporary tables for storing temporary data can be offloaded.
• C. PL/SQL blocks that you run on Active Data Guard standby databases can be always redirected to and run on the primary database.
• D. The DDL operations on private temporary tables are transparently redirected to the primary database.
• E. You might have to use sequences with global temporary tables to support read-mostly applications by using Active Data Guard.

Answer: A,B,E

Explanation:
In an Oracle Active Data Guard environment:
B: Read-mostly reporting applications that utilize global temporary tables to store session-specific data can be effectively offloaded to an Active Data Guard standby database, reducing the load on the primary database.
C: Sequences can be used with global temporary tables on an Active Data Guard standby database to support certain types of read-mostly applications, though some restrictions on sequence use may apply.
E: In Oracle Database 19c and later, DML redirection allows DML operations performed on an Active Data Guard standby database to be transparently redirected to the primary database. This is part of the DML Redirection feature.
Option A is incorrect because not all PL/SQL blocks run on an Active Data Guard standby database can be redirected to the primary database. Some PL/SQL executions, specifically those that would attempt to make changes to the database, are not supported on the standby.
Option D is incorrect because DDL operations on private temporary tables are not redirected; instead, private temporary tables are session-specific and are not persisted on disk, so they do not generate redo and are not applicable to an Active Data Guard standby.

NEW QUESTION # 33
On your logical standby database, you specified these rules:

After completion of the weekend batch cycle you attempt to delete the SQL Apply filters:

Which is TRUE regarding the execution of the UNSKIP procedure?

• A. It succeeds only if SQL apply is stopped before deleting the SQL Apply filter.
• B. It deletes both the SQL Apply filters.
• C. It succeeds only if all DML statements executed on the primary have been applied on the logical standby deleting the SQL Apply filter.
• D. It succeeds but the SQL Apply filters are not deleted.
• E. It returns an error because the syntax to delete a SQL Apply filter must specify the same object names as specified when the filter was added.

Answer: B

Explanation:
The execution of the UNSKIP procedure is designed to remove SQL Apply filters that have been previously set up on a logical standby database. Based on the provided statements, the UNSKIP procedure is directed to delete any SQL Apply filters for DML statements associated with objects in the 'HR' schema that start with
'EMP'. Since both SKIP procedures had the same schema name ('HR') and statement type ('DML'), and the UNSKIP procedure uses a wildcard (%) for the object name, it will successfully remove both of the SQL Apply filters for 'EMP_NEW' and 'EMP_OLD', as both object names match the pattern provided in the UNSKIP procedure.
References:Oracle's Data Guard documentation and SQL Language Reference provide insights into managing SQL Apply filters on a logical standby database using the DBMS_LOGSTDBY package. This includes adding and removing filters through SKIP and UNSKIP procedures.

NEW QUESTION # 34
Which two statements are true regarding Data Guard environments in an Oracle Muti-tenant architecture?

• A. Standby redo log files are required for each pluggable database that is protected with Data Guard.
• B. A Data Guard environment with a multi-tenant primary database can operate in any Protection mode.
• C. Different redo transport methods can be configured for different pluggable databases within one Data Guard environment.
• D. The Data Guard broker may be used for multi-tenant databases.
• E. PDB_FILE_NAME CONVERT must be set to enable creation of standby databases if they are created on the same host as the primary.

Answer: B,D

Explanation:
Oracle Multi-tenant architecture and Data Guard have several interactions, but specific aspects hold true in such environments:
* The Data Guard broker may be used for multi-tenant databases (B): Data Guard Broker simplifies the management and monitoring of Data Guard configurations and is fully compatible with the Oracle Multi-tenant architecture, allowing for easy management of Data Guard configurations that include multi-tenant container databases (CDBs) and their pluggable databases (PDBs).
* A Data Guard environment with a multi-tenant primary database can operate in any Protection mode (E): Data Guard can be configured to operate in Maximum Performance, Maximum Availability, or Maximum Protection mode, regardless of whether the primary database is a multi-tenant database.
This flexibility ensures that Data Guard can meet various data protection and availability requirements in multi-tenant environments.References:
* Oracle Data Guard Broker documentation
* Oracle Multitenant Administrator's Guide

NEW QUESTION # 35
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. 3,4
• B. 0
• C. 1.4
• D. 1,3,4
• E. 1
• F. 2,3,4

Answer: C

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 # 36
Which TWO statements are true about configuring Oracle Net Service in a Data Guard environment?

• A. Enterprise Manager does not require static service registration to restart instances during the course of broker operations.
• B. A static service must be registered with the local listener to enable DGMGRL to restart instances during the course of broker operations.
• C. Installing the oracle-database-preinstall-19c package is NOT sufficient to set up operating system kernel parameters for Oracle Net.
• D. Install the oracle-database-preinstall-19c package to set the kernel parameters for Oracle Net based on the Data Guard best practice guidelines.
• E. It is necessary to use the failover clause for an address_list with multiple address lists in the tnsnames.ora file.

Answer: B,C

Explanation:
* A static service must be registered with the local listener to enable DGMGRL to restart instances during the course of broker operations (A): For DGMGRL (Data Guard Manager Command-Line Interface) to perform instance management operations, such as restarting instances, a static service registration in the listener is required. This allows the broker to connect to the database instance even when the instance is not fully up and the dynamic service registration is not available.
* Installing the oracle-database-preinstall-19c package is NOT sufficient to set up operating system kernel parameters for Oracle Net (C): While the oracle-database-preinstall-19c package automates the setting of several kernel parameters to meet the preinstallation requirements for Oracle Database, it does not specifically tailor all settings for Oracle Net in a Data Guard configuration. Additional manual configuration may be required to optimize Oracle Net services for Data Guard operations.
References:
* Oracle Data Guard Broker documentation
* Oracle Net Services Administrator's Guide

NEW QUESTION # 37
Which TWO statements correctly describe the behavior of Automatic Block Media Recovery in a Data Guard environment, for a corrupt block in the example tablespace encountered by a session logged in as the SH user?

• A. A corrupt block on the primary database can be automatically recovered, using a block from a standby database with Real-Time Query enabled.
• B. A corrupt block on a standby database with Real-Time Query enabled, is automatically recovered, using flashback logs from the standby database.
• C. A corrupt block on a standby database with Real-Time Query enabled, can be automatically recovered, using a block from the primary database.
• D. A corrupt block on the primary database is automatically recovered, using a block from a flashback log from the primary database.
• E. A corrupt block on the primary database is automatically recovered, using a block from a flashback log from a standby database with Real-Time Query enabled.

Answer: A,D

Explanation:
Automatic Block Media Recovery can be a significant feature for maintaining data integrity within a Data Guard configuration.
* A corrupt block on the primary database can be automatically recovered, using a block from a standby database with Real-Time Query enabled (A): When a corrupted block is encountered on the primary database, Oracle can automatically replace it with a good block from the standby database where Real-Time Query is enabled, leveraging the standby as a source of good data.
* A corrupt block on the primary database is automatically recovered, using a block from a flashback log from the primary database (E): If a good block version is available in the flashback logs of the primary database, Automatic Block Media Recovery can use it to recover the corrupted block on the primary.References:
* Oracle Database Backup and Recovery User's Guide

NEW QUESTION # 38
Which three statements are true....... With no Oracle Streams or Goldengate configured?

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

Answer: C,E,F

Explanation:
C . The LGWR (Log Writer) process is responsible for writing redo entries from the redo log buffer to the online redo log files on the primary database. This is a fundamental process in the Oracle Database architecture, ensuring that all changes made to the database are captured for purposes such as recovery, replication, and high availability.
D . Real-time apply on a logical standby database requires standby redo log files. The standby redo log files are used to store redo data received from the primary database before it is applied to the logical standby database. This enables the logical standby to apply changes as they are received, without waiting for the current redo log file to be archived.
E . Similarly, on a physical standby database, standby redo log files are used for real-time apply. They store redo data from the primary database, allowing the physical standby to apply redo data concurrently as it is received, rather than waiting for redo log files to be archived. This capability is crucial for maintaining a physical standby database that is closely synchronized with the primary database with minimal lag.
These functionalities are integral to Oracle Data Guard configurations and are not dependent on Oracle Streams or Oracle GoldenGate, which are separate technologies for data replication and integration.

NEW QUESTION # 39
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. SQL*Plus
• B. Enterprise Manager Cloud Control
• C. CRSCTL
• D. GDCCTL
• E. RMAN
• F. SRVCTL
• G. DGMGRL

Answer: B,G

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.

NEW QUESTION # 40
Examine the Data Guard configuration:

Which three will be true after a successful failover to Cats?

• A. Dogs will be in the disabled state and has to be manually reinstated.
• B. Sheep will be in the enabled state.
• C. Sheep will be in the disabled state.
• D. The configuration will be in Maximum Availability mode.
• E. The configuration will be in Maximum Performance mode.

Answer: A,B,D

Explanation:
After a successful failover to the 'cats' database in a Data Guard configuration:
B: Sheep, being another standby database, would typically remain in the enabled state unless specifically disabled or if there was a configuration issue.
D: Dogs, which was the primary database prior to failover, will be in a disabled state as part of the failover process. Manual intervention is required to re-establish 'dogs' as a standby database or to return it to the primary role through another role transition.
E: If the configuration was in Maximum Availability mode before failover, it would remain in this mode after failover, provided all settings were properly configured and no changes were made to the protection mode.
Option A is incorrect because failover does not automatically change the protection mode to Maximum Performance. The protection mode remains as it was prior to the failover unless manually altered.

NEW QUESTION # 41
Examine the Data Guard configuration:
DGMGRL> show configuration;
Configuration - Animals
Protection Mode: Max Availability
Databases:
dogs - Primary database sheep
- Physical standby database cats
- Physical standby database
Fast-Start Failover: DISABLED
Configuration Status: SUCCESS
An attempt to enable fast-start failover raises an error:
DGMGRL> enable fast_start failover;
Error: ORA-16693: requirements not met for enabling fast-start failover Failed.
Identify three possible reasons for this error.

• A. The LogXptMode property is set to FASTSYNC on Cats while Sheep is the target standby database.
• B. The LogXptMode property is set to async on Dogs.
• C. The LogXptMode property is set to fastsync on Dogs.
• D. The fastStartFailoverTarget property is not set on Dogs.
• E. The LogxptModr property is set to async on Sheep while Sheep is the target standby database.

Answer: B,D,E

Explanation:
When enabling fast-start failover, certain conditions must be met:
* The fastStartFailoverTarget property is not set on Dogs (A): The primary database (Dogs) needs to have a fast-start failover target configured for the operation to succeed.
* The LogXptMode property is set to ASYNC on Sheep while Sheep is the target standby database (B): Fast-start failover requires synchronous redo transport (SYNC or FASTSYNC) to ensure zero data loss, which is a prerequisite for enabling the feature.
* The LogXptMode property is set to ASYNC on Dogs (D): Similar to the previous point, the primary database must be configured to use synchronous redo transport for the fast-start failover to be possible.
References:
* Oracle Data Guard Broker documentation
* Oracle Database Error Messages Guide

NEW QUESTION # 42
Which three are prerequisites for enabling Fast-Start Failover?

• A. Flashback Database must be enabled on the Fast-Start Failover target standby database.
• B. Flashback Database must be enabled on the primary database.
• C. The Fast-Start Failover target standby database may receive REDO either synchronously or asynchronously when the configuration operates in Maximum Performance mode.
• D. The Fast-Start Failover target standby database must receive REDO synchronously when the configuration operates in Maximum Availability mode.
• E. A static service name must be configured only for the Fast-Start Failover target standby database.

Answer: A,B,D

NEW QUESTION # 43
Which TWO statements are true about Real-Time Query?

• A. Disabling Real-Time Query prevents the automatic start of redo apply when a physical standby databases opened read only.
• B. Real-Time Query has no limitations regarding the protection level of the Data Guard environment.
• C. A standby database enabled for Real-Time Query cannot be the Fast-Start Failover target of the Data Guard configuration.
• D. Real-Time Query sessions can be connected to a Far Sync instance.
• E. Setting standby_max_data_delay=0 requires synchronous redo transport.

Answer: A,E

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.
Reference:
Oracle Data Guard Concepts and Administration Guide

NEW QUESTION # 44
Your Data Guard environment contains a primary database and three standby databases with these attributes:
1. prod : Primary database
2. prod_prq : Physical standby database with real-time query enabled used by reporting applications
3. prod_lsby: Logical standby database used by DSS
4. PROD_SSBY: Snapshot standby database used for Real Application Testing Which TWO can be used to prevent clients from connecting to the wrong database instance?

• A. Create database services for each database and use event triggers to make sure that services are activated only when the database is in the correct role.
• B. Create database services on each of the standby databases, start the services, and add connection descriptors on the clients to connect to those services.
• C. Establish Oracle Net connectivity to the primary database instance from all the standby database instances.
• D. Create role based services with the si vet] utility when using clusterware for Oracle RAC databases or Oracle Restart for single instance Oracle databases.
• E. Create a static service for each of the databases, register it with the local listener of each database instance, and add connection descriptors on clients to connect to those services.

Answer: A,B

Explanation:
Creating dedicated database services for each database instance (Option D) and utilizing event triggers to manage these services based on the role of the database (Option E) ensure that clients connect to the appropriate database instance based on its current role and state. This approach leverages the flexibility and control provided by Oracle Net services and database event management to direct client connections to the suitable primary or standby instance, enhancing the overall robustness and reliability of the Data Guard environment. Reference: Based on Oracle Database 19c best practices for managing connectivity and services in a Data Guard setup, including the use of role-based services and event-driven service management.

NEW QUESTION # 45
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