[Q42-Q58] Real Exam Questions 1z1-076 Dumps Exam Questions in here [Aug-2024]

Real Exam Questions 1z1-076 Dumps Exam Questions in here [Aug-2024]

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NEW QUESTION # 42
Examine this query and its output:

Which two statements are true?

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

Answer: B,C

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

NEW QUESTION # 43
Your Data Guard configuration consists of these components and settings:
1. A primary database
2. A remote physical standby database
3. Real-time query is enabled
4. Redo transport mode is synchronous
5. Protection mode is maximum availability
6. The Data Guard broker is used
You notice that the standby destination fails to acknowledge reception of redo within net_timeout period of time.
Which is true in this scenario?

• A. The physical standby database instance is shut down by the Data Guard broker.
• B. Real-time query will be disabled on the physical standby.
• C. The protection mode will automatically change to Maximum Performance.
• D. Synchronous redo transport mode connections to the standby database are terminated.

Answer: D

Explanation:
In a Data Guard configuration where the protection mode is set to Maximum Availability and synchronous redo transport is enabled, if the standby destination fails to acknowledge the reception of redo within the net_timeout period, the primary database will terminate the synchronous redo transport mode connections to the standby database to protect the primary database from hanging (C). The primary database then operates in a Maximum Performance mode until the issue is resolved. This behavior ensures that the primary database can continue to process transactions even when the standby database is temporarily unavailable.
References:The Oracle Data Guard Broker documentation and Oracle Data Guard Concepts and Administration guide detail the behavior of different protection modes and the response to network timeouts, including the fallback to asynchronous redo transport to maintain primary database availability.

NEW QUESTION # 44
Which TWO statements are true about configuring Oracle Net Service in a Data Guard environment?

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

Answer: A,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 # 45
You notice that the SQL apply lag on your logical standby database has increased but the redo transport lag has not.
Which four could be reasons for the increase in SQL apply lag?

• A. Many SQL apply operations do full table scans
• B. An undersized undo tablespace on the logical standby
• C. The standby redo log files are undersized on the primary database
• D. An increased number of bulk updates on the primary
• E. An increased number of bulk inserts on the primary
• F. An undersized shared pool

Answer: A,B,D,F

Explanation:
The SQL apply lag on a logical standby database can be caused by several factors:
* A: An undersized undo tablespace can lead to delays in SQL apply operations as it may not be able to handle the volume of undo records generated by the SQL apply process.
* B: SQL apply operations that do full table scans can consume significant system resources, potentially leading to higher apply lag.
* C: An increased number of bulk updates on the primary database may generate a large volume of redo data, which can cause apply lag if the logical standby cannot apply the changes quickly enough.
* F: An undersized shared pool may affect the parsing and execution of SQL statements by SQL apply, which can contribute to the apply lag.
Option D is less likely to be a direct cause of SQL apply lag compared to bulk updates, as inserts generate new data rather than modifying existing data, which SQL apply can typically handle more efficiently.
Option E is incorrect because the size of the standby redo log files on the primary database impacts redo transport lag, not SQL apply lag.
References: Oracle Database High Availability Overview and Oracle Data Guard Concepts and Administration guide provide insights into the factors affecting SQL apply performance on logical standby databases.

NEW QUESTION # 46
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. Renaming a data file in the primary database
• 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. Performing transportable tablespaces

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, 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 # 47
Examine the Data Guard configuration:

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

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

Answer: B,D,E

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.
References: The behavior of Oracle Data Guard during failover and the resulting configuration state is described in the Oracle Data Guard Broker documentation.

NEW QUESTION # 48
Which four statements are true regarding SQL Apply filters for a logical standby database?

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

Answer: A,C,D,E

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 # 49
Which THREE steps are prerequisites for the creation of a physical standby database on a separate server using the RMAN active database duplication method?

• A. Put the primary database into archivelog mode.
• B. Establish user equivalence for the database software owner between the primary host and standby host.
• C. Set the DB_UNIQUE_NAME parameter on the primary database to a different value than that of the DB_NAME name parameter.
• D. Configure Oracle Net connectivity on the primary host to the standby database instance.
• E. startup nomount the standby database instance.

Answer: B,D,E

Explanation:
Creating a physical standby database using RMAN active database duplication requires certain prerequisites to ensure a successful and seamless operation:
* Configure Oracle Net connectivity on the primary host to the standby database instance (A):
* Proper Oracle Net connectivity between the primary and standby servers is essential for communication and data transfer during the duplication process. Oracle Net services provide the network foundation for Oracle Database, Oracle Net Listener, and Oracle applications.
* Establish user equivalence for the database software owner between the primary host and standby host (B): User equivalence ensures that the user who owns the Oracle Database software on the primary server has the same privileges on the standby server. This is crucial for RMAN to perform operations on both servers without encountering permission issues.
* Startup nomount the standby database instance (C): The standby database instance needs to be started in the NOMOUNT stage before the duplication can begin. This prepares the environment for creating the control file and restoring the database without mounting it, which is a necessary step in the RMAN duplication process.References:
* Oracle Database Backup and Recovery User's Guide
* Oracle Data Guard Concepts and Administration

NEW QUESTION # 50
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 two logical standby databases
• B. a primary database with one logical standby database
• C. A primary database with one logical and one physical standby database
• D. a primary database with two physical standby databases
• E. a primary database with one physical standby database

Answer: B

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.

NEW QUESTION # 51
You are planning to perform block comparison using the dbms comp package:

Which TWO statements are true?

• A. The databases should be at least mounted before block comparison.
• B. Logical standby databases can be the target database for the dbms_dbcomp.dbcomp procedure.
• C. It requires that the DB_LOST_WKITE_protect initialization parameter be enabled.
• D. You can monitor the progress of an ongoing block comparison operation by querying VS SES SION_LONGOPS.
• E. It can be used to detect lost writes and inconsistencies between the primary database and the cascaded standbys.

Answer: A,D

Explanation:
The DBMS_COMPARISON package, used for comparing and converging data objects within a single database or between databases, requires that the databases involved in the block comparison be at least mounted (A). This allows the procedure to access the data blocks for comparison. Additionally, the progress of long-running operations such as block comparison can be monitored using the dynamic performance view V$SESSION_LONGOPS (D), which provides information on the operation's progress and estimated completion time.
References:Oracle Database PL/SQL Packages and Types Reference provides comprehensive details on the DBMS_COMPARISON package, including its procedures and how to monitor their progress. Additionally, Oracle Database Reference explains the V$SESSION_LONGOPS view, which is commonly used for monitoring long operations in the database.

NEW QUESTION # 52
There are currently 6 applief. and 6 pfepafef processes running and no idle applier processes on y logical standby database.
The max_SERVERS SQL apply parameter and number of archiver processes are both set to 12.
Identify two changes, each of which would allow you to increase the number of applier processes.

• A. Decrease the number of archiver processes on the standby database.
• B. Increase the value for the MAX_SERVERS SQL apply parameter.
• C. Increase the parallel_max_server initialization parameter.
• D. Increase the processes initialization parameter. D Decrease the number of FREPARER processes.
• E. Increase the RECOVERY_PARALLEL initialization parameter.

Answer: B,C

Explanation:
To increase the number of applier processes on a logical standby database, the following changes can be made:
* C: Increasing the value for the MAX_SERVERS SQL apply parameter would allow for more applier processes to be initiated, assuming that system resources permit.
* D: Increasing the PARALLEL_MAX_SERVERS initialization parameter would allow for more parallel execution processes, which can be used by SQL apply to increase the number of applier processes.
Option A is incorrect as decreasing the number of archiver processes will not necessarily increase the number of applier processes; these are unrelated components.
Option B is incorrect because the 'FREPARER' processes do not exist, it seems to be a typographical error, and the 'REPARER' is not a valid Oracle process or parameter.
Option E is incorrect because the RECOVERY_PARALLELISM parameter controls the number of processes used for instance recovery and media recovery, not for SQL apply.
References: Oracle Data Guard Concepts and Administration guide details the configuration and tuning of SQL apply-related parameters in logical standby databases.

NEW QUESTION # 53
Which THREE are among the various tasks performed by the Data Guard Monitor (DMON) process?

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

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.
References:
* Oracle Data Guard Concepts and Administration
* Oracle Data Guard Broker documentation

NEW QUESTION # 54
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. 2,3,4
• C. 3,4
• D. 1.4
• E. 0
• F. 1

Answer: D

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 # 55
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. 5,2,4,6,3,1
• C. 5,2,4,3,6,1
• D. 1,5,2,4,6,3
• E. 5,2,4,1

Answer: D

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 # 56
Which THREE statements are true........ open in real time query mode, which becomes a new.

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

Answer: A,B,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.
References
* Oracle Data Guard Concepts and Administration
* Oracle Database Licensing Information User Manual
* Oracle Data Guard Broker User Manual

NEW QUESTION # 57
You created a physical standby database prodsbyi from the primary database prod using SQL and RMAN.
Which THREE are prerequisites for creating a Data Guard Broker configuration to manage these databases?

• A. The standby database must have supplemental logging enabled.
• B. A local net service name to enable connectivity to the PRODSBYI database instance must be defined on the primary database host.
• C. The primary database must have FORCE LOGGING enabled.
• D. The DG_BROKER_START parameter must be set to TRUE for both database instances.
• E. The primary database must have supplemental logging enabled.
• F. The LOG_ARCHIVE_DEST_n parameters with the service attribute set must be cleared.

Answer: B,D,E

Explanation:
When setting up a Data Guard Broker configuration for a primary database and its physical standby, the following prerequisites must be met:
* A: Oracle Net connectivity must be defined on both the primary and standby hosts to enable the respective database instances to communicate with each other.
* B: Supplemental logging is required on the primary database because it provides additional logging necessary for the standby database to be able to apply changes from the primary database accurately.
* F: The DG_BROKER_START parameter must be set to TRUE for both the primary and standby
* database instances. This parameter is used to start the Data Guard Broker process which manages the configuration.
Options C and D are not prerequisites for creating a Data Guard Broker configuration. Additionally, while FORCE LOGGING mode (option E) is recommended as a best practice to prevent possible data inconsistencies during media recovery, it is not a strict prerequisite for creating a Data Guard Broker configuration.
References: This guidance is based on Oracle's best practices for setting up Data Guard configurations, as found in the Oracle Data Guard Broker documentation and the Oracle Data Guard Concepts and Administration guide.

NEW QUESTION # 58
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