Oct-2025 New Version 1z0-076 Certificate & Helpful Exam Dumps is Online [Q25-Q42]

Oct-2025 New Version 1z0-076 Certificate & Helpful Exam Dumps is Online

1z0-076 Free Certification Exam Material with 111 Q&As 

NEW QUESTION # 25
Which THREE statements are true about Far Sync instances?

• A. A primary database can ship redo directly to multiple Far Sync instances.
• B. They use an spfMe, a standby controlfile, and standby redo logs.
• C. They enable standby databases to be configured at remote distances from the primary without impacting performance on the primary.
• D. The Data Guard Broker must be used to deploy and manage Far Sync instances.
• E. They work with any protection level.

Answer: A,C,D

Explanation:
Far Sync instances are a feature of Oracle Data Guard designed to support zero data loss protection over long distances:
* The Data Guard Broker must be used to deploy and manage Far Sync instances (A): Data Guard Broker simplifies the deployment and management of Far Sync instances, which are an integral part of zero data loss protection configurations.
* They enable standby databases to be configured at remote distances from the primary without impacting performance on the primary (C): Far Sync instances are designed to receive redo from the primary database and then forward it to a remote standby database, thereby avoiding any performance
* impact on the primary database itself.
* A primary database can ship redo directly to multiple Far Sync instances (E): A primary database can be configured to send redo logs to more than one Far Sync instance, which can then forward the redo to their respective remote standby databases.References:
* Oracle Data Guard Concepts and Administration Guide
* Oracle Database High Availability Overview

NEW QUESTION # 26
Which THREE are true about using flashback database in a Data Guard environment?

• A. It may not be used to flash back a primary database after a failover to a physical standby.
• B. It may be used to flash back a physical standby that receives redo from a far sync instance.
• C. You can use it when real-time apply is enabled in case the physical standby suffers from logical corruption.
• D. You can use it when real-time apply is enabled in case the phylt may not be used to flash back a primary database after a failover to a logical standby.
• E. When a flashback database operation is performed on a primary database, a physical standby database is also flashed back automatically.
• F. When a flashback database operation is performed on a primary database, a logical standby database is also flashed back automatically.

Answer: A,B,C

Explanation:
Flashback Database is a feature that allows reverting a database to a previous point in time, which is extremely useful in various Data Guard configurations:
* It may be used to flash back a physical standby that receives redo from a far sync instance (C):
Flashback Database can be used on a physical standby database to revert it to a past point in time, even when it is receiving redo data from a far sync instance. This can be particularly useful to recover from logical corruptions or unwanted changes.
* You can use it when real-time apply is enabled in case the physical standby suffers from logical corruption (D): Even when real-time apply is enabled, which allows redo data to be applied to the standby database as soon as it is received, Flashback Database can be used to revert the physical standby database to a point in time before the logical corruption occurred.
* It may not be used to flash back a primary database after a failover to a physical standby (E):
After a failover has occurred from a primary to a physical standby database, making the standby the new primary, Flashback Database cannot be used to revert the old primary database to a state before the failover because the failover operation makes irreversible changes to the database role and configuration.References:
* Oracle Database Backup and Recovery User's Guide
* Oracle Data Guard Concepts and Administration

NEW QUESTION # 27
Which THREE statements are true about Far Sync instances?

• A. A primary database can ship redo directly to multiple Far Sync instances.
• B. They use an spfMe, a standby controlfile, and standby redo logs.
• C. They enable standby databases to be configured at remote distances from the primary without impacting performance on the primary.
• D. The Data Guard Broker must be used to deploy and manage Far Sync instances.
• E. They work with any protection level.

Answer: A,C,D

NEW QUESTION # 28
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. Install the oracle-database-preinstall-19c package to set the kernel parameters for Oracle Net based on the Data Guard best practice guidelines.
• D. Installing the oracle-database-preinstall-19c package is NOT sufficient to set up operating system kernel parameters for Oracle Net.
• E. It is necessary to use the failover clause for an address_list with multiple address lists in the tnsnames.ora file.

Answer: B,D

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 # 29
You are licensed to use Oracle Active Data Guard.
Which TWO statements are true after enabling block change tracking on a physical standby database?

• A. It allows fast incremental backups to be taken on the primary database.
• B. It allows fast incremental backups to be offloaded to a snapshot standby database, when the physical standby database is converted.
• C. It starts the RVWR process on the physical standby database instance.
• D. It starts the CTWR process on the physical standby database instance.
• E. It allows fast incremental backups to be offloaded to the physical standby database.
• F. It starts the CTWR process on the primary database instance.

Answer: C,E

Explanation:
Block change tracking is a feature that enhances the efficiency of incremental backups by recording changed blocks in a tracking file. When used with Oracle Active Data Guard:
* It starts the RVWR process on the physical standby database instance (A): When block change tracking is enabled on a physical standby database, the Recovery Writer (RVWR) process is initiated.
This process is responsible for recording the changes to blocks in the block change tracking file, which is then used to optimize incremental backups.
* It allows fast incremental backups to be offloaded to the physical standby database (E): With block change tracking enabled on the physical standby database, fast incremental backups can be offloaded from the primary database. This reduces the workload on the primary database and utilizes the standby database for backup operations, improving overall system performance and efficiency.References:
* Oracle Database Backup and Recovery User's Guide
* Oracle Active Data Guard documentation

NEW QUESTION # 30
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. PL/SQL blocks that you run on Active Data Guard standby databases can be always redirected to and run on the primary database.
• C. You might have to use sequences with global temporary tables to support read-mostly applications by using Active Data Guard.
• D. Read-mostly reporting applications that use global temporary tables for storing temporary data can be offloaded.
• E. The DDL operations on private temporary tables are transparently redirected to the primary database.

Answer: A,C,D

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 # 31
You must configure an Oracle Data..........
1. A primary database
2. A physical standby database
Examine these requirements: 1. Data loss is not permitted.
1. Data loss is not permitted.
2. It should be possible to convert the physical standby database to a snapshot standby database.
3. Under normal operations, transactions should commit when redo is written to disk on the primary database and as soon as it has been received by the standby database instance.
4. The availability of the primary database should not be compromised by the availability of the standby database.
5. It should be possible to convert the physical standby database to a logical standby database
6. It should be possible to deploy Real Application Clusters on the primary database.
7. It should be possible to deploy Real Application Clusters on the physical standby database.
You configure SYNC redo transport mode in combination with Maximum Protection mode.

• A. 1, 6, and 7
• B. 1, 2, and 5
• C. 1, 2, 3, 6, and 7
• D. 1, 2, 6, and 7
• E. 1, 2, 3, 4, 5, 6, and 7

Answer: E

Explanation:
When SYNC redo transport mode is combined with Maximum Protection mode, it ensures that no data loss will occur (requirement 1). The physical standby can be converted to a snapshot standby (requirement 2) and later to a logical standby database (requirement 5), satisfying both transformation requirements. Transactions commit as soon as redo data is received by the standby database (requirement 3). The availability of the primary is not dependent on the standby database in Maximum Protection mode, as the primary database will halt if the standby cannot acknowledge the redo (requirement 4), thus indirectly ensuring its availability. It is also possible to deploy Real Application Clusters on both the primary (requirement 6) and the physical standby database (requirement 7), providing high availability and scalability.
Reference
Oracle Data Guard documentation detailing the requirements for different database roles, protection modes, and redo transport modes, as well as the capabilities and limitations of each configuration.

NEW QUESTION # 32
Which three statements are true about redo transport?

• A. Multiple RFS processes may receive redo on one standby database instance.
• B. With synchronous redo transport, LGWR ships redo directly to RFS processes on the standby database instances and waits for an acknowledgment.
• C. Multiple RFS processes may receive redo on one far sync instance.
• D. An RFS process on a standby database instance may receive redo from an archiver process on the primary database instance to perform archive gap resolution.
• E. With asynchronous redo transport, TTnn processes may read redo from the log buffer or from standby redo logs on the primary database.

Answer: A,B,D

NEW QUESTION # 33
Which THREE statements are true........ open in real time query mode, which becomes a new.

• A. User sessions and Current Buffers are maintained by default.
• B. All sessions are disconnected and all
• C. Sessions that have long running queries can be retained.
• D. Sessions that are using database links
• E. User sessions can be retained.
• F. All current buffers can be retained.

Answer: B,E,F

Explanation:
When a physical standby database is opened in real-time query mode, which may be referred to as real-time apply when using Active Data Guard, certain operations can disrupt ongoing sessions. However, with features like Application Continuity and the proper configuration of initialization parameters such as STANDBY_DB_PRESERVE_STATES, user sessions and current buffers may be preserved during role transitions such as a switchover or failover. Specifically, the STANDBY_DB_PRESERVE_STATES parameter can be set to preserve none, all, or only user sessions during such transitions. This ensures that in-flight transactions are not lost and that users do not experience disruptions during the role transitions of a physical standby database.
Reference
Oracle Data Guard Concepts and Administration
Oracle Database Licensing Information User Manual
Oracle Data Guard Broker User Manual

NEW QUESTION # 34
You must configure flashback database for your Oracle 19c databases that will be part of a Data Guard Broker configuration.
The databases are all in ARCHIVELOG mode.
You will execute the SQL statement:
ALTER DATABASE FLASHBACK ON;
Which three are true concerning this command?

• A. If executed successfully on an Oracle 19c primary database, flashback will also be enabled on all logical standby databases that are part of the configuration.
• B. It will execute successfully while an Oracle 19c primary database is mounted.
• C. It will execute successfully while an Oracle 19c primary database is open.
• D. It will execute successfully on an Oracle 19c physical standby database while Real Time Query is active.
• E. If executed successfully on an Oracle 19c primary database, flashback will also be enabled on all physical standby databases that are part of the configuration.
• F. It will execute successfully on an Oracle 19c logical standby database while SQL apply is active.

Answer: B,C,F

Explanation:
The command ALTER DATABASE FLASHBACK ON; enables the Flashback Database feature, which provides a way to quickly revert an entire Oracle database back to a previous point in time. This command can be executed while an Oracle 19c primary database is either open (option A) or mounted (option B). It is also applicable to an Oracle 19c logical standby database while SQL Apply is active (option E). However, it's important to note that enabling Flashback Database on the primary does not automatically enable it on all associated standby databases, whether they are physical or logical. Each database in a Data Guard configuration must have Flashback Database explicitly enabled if desired. Real Time Query being active on a physical standby does not directly relate to the ability to execute this command on the standby. References:
The explanation is based on Oracle's concepts for Flashback Technology and Data Guard configurations as detailed in the Oracle Database Backup and Recovery User's Guide and the Oracle Data Guard Concepts and Administration guide.

NEW QUESTION # 35
Which three statements are true....... With no Oracle Streams or Goldengate configured?

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

Answer: B,D,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 # 36
Examine this query and its output:

Which two statements are true?

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

Answer: C,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.

NEW QUESTION # 37
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. 2,3,4
• B. 1,3,4
• C. 3,4
• D. 0
• E. 1
• 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.
Reference:
Oracle Real Application Clusters Administration and Deployment Guide
Oracle Data Guard Concepts and Administration Guide

NEW QUESTION # 38
You must configure flashback database for your Oracle 19c databases that will be part of a Data Guard Broker configuration.
The databases are all in ARCHIVELOG mode.
You will execute the SQL statement:
ALTER DATABASE FLASHBACK ON;
Which three are true concerning this command?

• A. If executed successfully on an Oracle 19c primary database, flashback will also be enabled on all logical standby databases that are part of the configuration.
• B. It will execute successfully while an Oracle 19c primary database is mounted.
• C. It will execute successfully while an Oracle 19c primary database is open.
• D. It will execute successfully on an Oracle 19c physical standby database while Real Time Query is active.
• E. If executed successfully on an Oracle 19c primary database, flashback will also be enabled on all physical standby databases that are part of the configuration.
• F. It will execute successfully on an Oracle 19c logical standby database while SQL apply is active.

Answer: B,C,F

Explanation:
The command ALTER DATABASE FLASHBACK ON; enables the Flashback Database feature, which provides a way to quickly revert an entire Oracle database back to a previous point in time. This command can be executed while an Oracle 19c primary database is either open (option A) or mounted (option B). It is also applicable to an Oracle 19c logical standby database while SQL Apply is active (option E). However, it's important to note that enabling Flashback Database on the primary does not automatically enable it on all associated standby databases, whether they are physical or logical. Each database in a Data Guard configuration must have Flashback Database explicitly enabled if desired. Real Time Query being active on a physical standby does not directly relate to the ability to execute this command on the standby. Reference: The explanation is based on Oracle's concepts for Flashback Technology and Data Guard configurations as detailed in the Oracle Database Backup and Recovery User's Guide and the Oracle Data Guard Concepts and Administration guide.

NEW QUESTION # 39
Which three statements are true about snapshot standby databases?

• A. A logical standby database can be converted into a snapshot standby database.
• B. Tablespaces can be created.
• C. The switchover TO command allows a switchover operation to a snapshot standby database.
• D. Tablespaces can be dropped.
• E. Tables can be dropped.
• F. The FATLOVER TO command results in a transition of a snapshot standby database to the primary role.

Answer: B,D,E

Explanation:
A snapshot standby database is a fully updateable standby database that is created by converting a physical standby database into a snapshot standby database. The main characteristics of a snapshot standby database include:
B: Tablespaces can indeed be dropped in a snapshot standby database because it is updateable and allows all types of DML and DDL operations that do not conflict with the standby role.
C: Tablespaces can be created in a snapshot standby database for the same reasons that they can be dropped; it supports all operations that do not interfere with its standby nature.
E: Tables can be dropped in a snapshot standby database, as it is a fully updateable standby.
Options A and D are incorrect because 'FAILOVER TO' and 'SWITCHOVER TO' commands are not used with snapshot standby databases in these contexts. A failover converts a standby database into the primary role after the original primary has become unavailable, and is not a reversible role transition. Switchover is a planned role reversal between the primary database and one of its standby databases and is not applicable to snapshot standby databases in the context provided.
Option F is incorrect because a logical standby database cannot be converted into a snapshot standby database directly. A logical standby is used for different purposes such as reporting and querying with real-time data, and its structure is different from a physical standby which can be converted into a snapshot standby.

NEW QUESTION # 40
Examine this list of possible steps:
1. Raise the compatibility level on both databases.
2. Restart SQL Apply on the upgraded logical standby database.
3. Start SQL Apply on the old primary database.
4. Perform a Switchover to the logical standby database.
5. Upgrade the logical standby database.
6. Upgrade the old primary database.
Which is the minimum number of steps in the correct order, to perform a rolling release upgrade of a data guard environment using an existing logical standby database and to enable the new functionality?

• A. 4,6,5,2,3,1
• B. 5,2,4,3,6,1
• C. 5,2,4,6,3,1
• D. 5,2,4,1
• E. 1,5,2,4,6,3

Answer: E

Explanation:
The process of performing a rolling release upgrade in a Data Guard environment using a logical standby database generally involves these steps:
* Raise the compatibility level on both databases (1): Ensuring both the primary and logical standby databases are operating with the same and correct compatibility level is essential before starting the upgrade process.
* Upgrade the logical standby database (5): Apply the database upgrade to the logical standby first, which allows the primary database to continue serving the workload without interruption.
* Restart SQL Apply on the upgraded logical standby database (2): Once the logical standby has been upgraded, SQL Apply must be restarted to apply the redo data from the primary database, which is still running the earlier version.
* Perform a switchover to the logical standby database (4): After confirming that the logical standby database is successfully applying redo data, perform a switchover to make it the new primary database.
* Upgrade the old primary database (6): With the new primary database now in place, upgrade the old primary database (which is now the new standby) to the new Oracle Database release.
* Start SQL Apply on the old primary database (3): Finally, start SQL Apply on what is now the standby database to synchronize it with the new primary database.References:
* Oracle Data Guard Concepts and Administration Guide
* Oracle Database Upgrade Guide

NEW QUESTION # 41
Which THREE are among the various tasks performed by the Data Guard Monitor (DMON) process?

• A. activating role-based services appropriately in the various database instances of the configuration, based on the database role
• B. maintaining information about all members of the broker configuration in binary configuration files.
• C. performing role transitions when switchover requests are made
• D. communicating with the DMON process of the observer to monitor a primary database in case a fast start failover is required
• E. communicating with dkon processes in other database instances that are part of the broker configuration

Answer: A,B,C

Explanation:
The Data Guard Monitor (DMON) process is a key component of Oracle Data Guard. It plays a crucial role in managing and monitoring the state of both the primary and standby databases in a Data Guard configuration.
Performing role transitions when switchover requests are made (A): DMON is responsible for coordinating the switchover process between the primary and standby databases. This involves safely transitioning the roles of the databases to ensure data protection and availability.
Maintaining information about all members of the broker configuration in binary configuration files (B): DMON maintains detailed information about the databases in the Data Guard configuration, including their roles, states, and network addresses. This information is stored in binary configuration files, which are used by the Data Guard Broker to manage the Data Guard environment.
Activating role-based services appropriately in the various database instances of the configuration, based on the database role (C): DMON activates services that are appropriate for the role of each database in the Data Guard configuration. For example, it may activate different services on a primary database than on a standby database, based on the specific requirements of each role.
Reference:
Oracle Data Guard Concepts and Administration
Oracle Data Guard Broker documentation

NEW QUESTION # 42
......

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