Question 1

Examine this query and its output: https://kxbjsyuhceggsyvxdkof.supabase.co/storage/v1/object/public/file-images/1Z0-076/page_5_img_1.jpg Which two statements are true?

Accepted Answer

D, E

Explanation: D . The database role indicated by FS_FAILOVER_STATUS as BYSTANDER implies that the database is a standby database in the Data Guard configuration. This means the database is neither a primary database nor an active failover target. E . Since the FS_FAILOVER_OBSERVER_HOST column shows cats, it suggests that this is the host on which the observer would run. However, because the FS_FAILOVER_OBSERVER_PRESENT column is not shown, we cannot definitively state if the observer is currently connected or not. If FS_FAILOVER_OBSERVER_PRESENT is 'YES', the observer is connected, if 'NO', then it's not. In the absence of this column's output, the best assumption based on the available data is that the observer is not connected. The output shows that the FS_FAILOVER_STATUS is BYSTANDER, which indicates that the database in question is not actively involved in a fast-start failover configuration as a primary or standby. It is in a bystander role, meaning that while it is part of a Data Guard configuration, it is neither a target for failover nor actively participating in failover operations. Additionally, FS_FAILOVER_OBSERVER_HOST shows 'cats', which indicates the host where the observer process is expected to run. However, since there is no information about the observer being present, we can infer that although 'cats' is designated for the observer to run, the observer is not currently connected to this database. Reference Oracle documentation on Data Guard configurations and the V$DATABASE view which provides information about the fast-start failover status and observer host.

Question 2

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

Accepted Answer

D, E

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

Question 3

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.

Accepted Answer

A, B, D

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. Reference: Oracle Data Guard Broker documentation Oracle Database Error Messages Guide

Question 4

Your expertise is requested for these customer requirements:
The Data Guard environment must be in maximum protection mode.
Reports must be offloaded to a physical standby database.
There must be no lag between the primary and standby databases that affect the reports produced.
The primary database must be resilient in case of a single network failure.
Which solution is correct for these requirements?

Accepted Answer

A

Explanation: :

Question 5

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

Accepted Answer

A, B, C

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. Reference: Oracle Database Backup and Recovery User's Guide Oracle Data Guard Concepts and Administration

Question 6

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?

Accepted Answer

A

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

Question 7

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

Accepted 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

Question 8

Which THREE are true about using flashback database in a Data Guard environment?

Accepted Answer

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. Reference: Oracle Database Backup and Recovery User's Guide Oracle Data Guard Concepts and Administration

Question 9

In Oracle Database 19c, you can set the value of database initialization parameters in a database
using
the EDIT DATABASE... SET PARAMETER Command:
DGMGRL> EDIT DATABASE 'boston' SET PARAMETER log_archive_trace - 1;
Which THREE statements are TRUE about the command?

Accepted Answer

B, C, E

Explanation: The EDIT DATABASE...SET PARAMETER command in Data Guard Management (DGMGRL) is used to modify the value of initialization parameters for a database within a Data Guard configuration. This command can be used to modify both static and dynamic parameters, but if a static parameter is changed, the new value will take effect only after the database is restarted. The database must be up and running for the command to execute, and the values set using the command are directly applied to the specified database (in this case, 'boston') .

Question 10

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

Accepted Answer

A, 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. Reference: Oracle Database Backup and Recovery User's Guide Oracle Active Data Guard documentation

Question 11

You detected an unrecoverable archive gap in your data guard environment. So, you need to roll
standby.
forward in time without applying a large number of archive log files using this command:
RMAN> RECOVER STANDBY DATABASE FROM SERVICE-;
When running this command, which of the following steps can be performed automatically?
1. Remember all data file names on the standby.
2. Restart standby in nomount.
3. Restore controlfile from primary.
4. Mount standby database.
5. Rename data files from stored standby names.
6. Restore new data files to new names.
7. Recover standby.

Accepted Answer

E

Explanation: The RECOVER STANDBY DATABASE FROM SERVICE command in RMAN is designed to automate various steps required to recover the standby database, especially when dealing with an archive gap. When this command is executed, the following actions can occur automatically: Remember all data file names on the standby (1): RMAN has the capability to recall the names and paths of all data files associated with the standby database. Restart standby in nomount (2): The standby database can be automatically restarted in the NOMOUNT state, allowing recovery operations to proceed without the database being open. Restore controlfile from primary (3): RMAN can restore the control file from the primary database to the standby system, ensuring that the standby has the most up-to-date control file. Mount standby database (4): After restoring the control file, the standby database is mounted to prepare for data file recovery. Rename data files from stored standby names (5): Not typically done automatically by this command. Restore new data files to new names (6): New data files added to the primary since the last synchronization can be restored to the standby with their correct names. Recover standby (7): Finally, RMAN will apply any necessary redo logs to bring the standby database up to date with the primary. While some steps, such as renaming data files (5), typically require manual intervention or scripting, most of the recovery process can be handled by RMAN automatically, streamlining the recovery of the standby database. Reference: Oracle Database Backup and Recovery User's Guide Oracle Data Guard Concepts and Administration Guide

Question 12

Which TWO statements are true regarding Data Guard Broker?

Accepted Answer

A, B

Explanation: :

Question 13

Which three are true about using RMAN in a Data Guard environment?

Accepted Answer

A, B, D

Explanation: :

Question 14

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).

Accepted 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. Reference: Oracle Real Application Clusters Administration and Deployment Guide Oracle Data Guard Concepts and Administration Guide

Question 15

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

Accepted Answer

A, E

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

Free Oracle 1Z0-076 Certification Actual Exam Questions