Verified 1z0-076 Dumps Q&As - 1z0-076 Test Engine with Correct Answers
Pass Your 1z0-076 Dumps as PDF Updated on 2025 With 111 Questions
NEW QUESTION # 49
Your Data Guard environment consists of these components and settings:
1. A primary database
2. Two remote physical standby databases
3. The redo transport mode is set to sync
4. Real-time query is enabled for both standby databases
5. The DB_BLOCK_CHECKING parameter is set to TRUE on both standby databases You notice an increase in redo apply lag time on both standby databases.
Which two would you recommend to reduce the redo apply lag on the standby databases?
- A. Increase the number of standby redo log files on the standby databases.
- B. Increase the size of standby redo log files on the standby databases.
- C. Lower DB_BLOCK_CHECKING to MEDIUM or low on the standby databases.
- D. Decrease the redo log file size on the primary database.
- E. Increase the size of the buffer cache on the physical standby database instances.
Answer: B,C
Explanation:
To reduce the redo apply lag on standby databases, one could increase the size of the standby redo log files.
Larger redo log files can accommodate more redo data, which may reduce the frequency of log switches and allow for more continuous application of redo data. Additionally, lowering the DB_BLOCK_CHECKING parameter to MEDIUM or LOW on the standby databases can help improve redo apply performance. High block checking can impose additional CPU overhead during the application of redo data, potentially increasing apply lag times. By reducing the level of block checking, you can lessen this overhead and help reduce the apply lag .
NEW QUESTION # 50
You are using Data Guard in conjunction with Global Database Services.
You have a Data Guard Broker configuration called Sales and a GDS pool called Prod.
Which three are true concerning the management of the broker configuration when using GDS?
- A. DGMGRL may be used to add a single database to the Sales configuration even if Sales is a member of the Prod pool.
- B. Adding a database to the Sales configuration with DGMGRL automatically adds the database to the Prod Pool.
- C. Performing a role change with DGMGRL automatically notifies GDS which in turn activates the appropriate services.
- D. DGMGRL may be used to add the Sales configuration to the Prod pool in gds.
- E. Adding a database to the Sales configuration with DGMGRL requires that the Sales configuration be disabled first. It must then be enabled after the new database is added to the configuration.
Answer: A,C,D
Explanation:
In the context of Oracle Data Guard and Global Database Services (GDS):
DGMGRL may be used to add the Sales configuration to the Prod pool in gds (A): Data Guard Broker's command-line interface DGMGRL can be utilized to manage configurations with GDS, allowing the addition of Data Guard Broker configurations to GDS pools.
Performing a role change with DGMGRL automatically notifies GDS which in turn activates the appropriate services (B): When a role change is executed using DGMGRL, GDS is automatically notified, and it then activates the services that are appropriate for the new database roles.
DGMGRL may be used to add a single database to the Sales configuration even if Sales is a member of the Prod pool (C): DGMGRL provides the capability to manage individual databases within a broker configuration, including adding databases to a configuration that is already part of a GDS pool.
Reference:
Oracle Data Guard Broker documentation
Oracle Global Data Services documentation
NEW QUESTION # 51
Which THREE are among the various tasks performed by the Data Guard Monitor (DMON) process?
- A. communicating with the DMON process of the observer to monitor a primary database in case a fast start failover is required
- B. performing role transitions when switchover requests are made
- C. maintaining information about all members of the broker configuration in binary configuration files.
- D. activating role-based services appropriately in the various database instances of the configuration, based on the database role
- E. communicating with dkon processes in other database instances that are part of the broker configuration
Answer: B,C,D
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 # 52
Which two are true concerning the configuring of Flashback database in a Data Guard environment?
- A. It permits a primary database that was disabled after failover to be reinstated as a standby.
- B. It is required in order for a snapshot standby database to be converted to a physical standby database.
- C. It is a prerequisite for the use of Fast Start Failover.
- D. It enables the use of far sync instances.
- E. It permits a physical standby database to be converted to a snapshot standby database.
Answer: A,E
NEW QUESTION # 53
Examine the Data Guard configuration: DGMGRL> show configuration;
Configuration - Animals
Protection Mode: MaxPerformance
Databases:
dogs- Primary database
sheep - Physical standby database
cats- Snapshot standby database
Fast-Start Failover: DISABLED
Configuration Status: SUCCESS
You receive an error while attempting to raise the protection mode to Maximum Protection:
DGMGRL> edit configuration set protection mode as maxprotection;
Error: ORA-16627: operation disallowed since no standby databases would remain to support protection mode Failed.
What can you conclude based on this error?
- A. The redo transport mode is set to async for both standby databases.
- B. Cats is a snapshot standby database.
- C. The redo transport mode is set to asyn: for the standby database Cats.
- D. The redo transport mode is set to async for the standby database Sheep.
Answer: B
Explanation:
Comprehensive Detailed Explanation:
In an Oracle Data Guard environment, the Maximum Protection mode requires that all redo data be transmitted synchronously to at least one standby database, ensuring no data loss even in the event of a primary database failure. However, a snapshot standby database, by its nature, allows read-write access and is temporarily disconnected from the redo stream, which makes it unable to participate in the synchronous redo transport required by Maximum Protection mode. The presence of a snapshot standby database in the Data Guard configuration thus prevents the activation of Maximum Protection mode, as it cannot guarantee zero data loss without a standby database capable of receiving redo data synchronously.
Reference:
Oracle Data Guard documentation clearly outlines the requirements and restrictions of different protection modes, including the necessity for standby databases to participate in synchronous redo transport to enable Maximum Protection mode. The inability of snapshot standby databases to fulfill this requirement is a key consideration when planning Data Guard configurations and protection levels.
Explanation:
The error indicates that switching the protection mode to Maximum Protection is not possible due to the presence of a snapshot standby database in the Data Guard configuration, which cannot participate in synchronous redo transport required by the Maximum Protection mode. Therefore, the correct answer is:
NEW QUESTION # 54
Which two are prerequisites for configuring Transaction Guard in a Data Guard environment?
- A. Ensure that connection descriptors for database clients use the failover clause with the COMMIT_OUTCOME parameter set to TRUE.
- B. Create a database service with COMMIT_OUTCOME set to TRUE and ensure that the service is statically registered with the default listener on the primary host.
- C. Create a database service with COMMIT_OUTCOME set to TRUE, and ensure clients use that service to connect to the database instance.
- D. Grant execute permission on the DBMS_APP_CONT package to relevant database schema owners.
- E. Set INSTANCE_NAME identically on all the Data Guard Configuration databases and modify the local service name on the client to include a CONNECTION_LIST containing all the standby hosts.
Answer: C,D
NEW QUESTION # 55
A Data Guard environment has this configuration and these attributes:
A primary database
A physical standby database named sbdb
The configuration is in maximum availability protection mode.
Then sbdb is converted to a snapshot standby database.
Which two statements are true?
- A. The recovery time objective increases.
- B. The recovery point objective increases.
- C. sbdb can still apply redo.
- D. sbdb can still receive redo.
- E. The protection mode is lowered to maximum performance.
Answer: B,D
NEW QUESTION # 56
You are using Data Guard in conjunction with Global Database Services.
You have a Data Guard Broker configuration called Sales and a GDS pool called Prod.
Which three are true concerning the management of the broker configuration when using GDS?
- A. DGMGRL may be used to add a single database to the Sales configuration even if Sales is a member of the Prod pool.
- B. Adding a database to the Sales configuration with DGMGRL automatically adds the database to the Prod Pool.
- C. Performing a role change with DGMGRL automatically notifies GDS which in turn activates the appropriate services.
- D. DGMGRL may be used to add the Sales configuration to the Prod pool in gds.
- E. Adding a database to the Sales configuration with DGMGRL requires that the Sales configuration be disabled first. It must then be enabled after the new database is added to the configuration.
Answer: A,C,D
Explanation:
In the context of Oracle Data Guard and Global Database Services (GDS):
* DGMGRL may be used to add the Sales configuration to the Prod pool in gds (A): Data Guard Broker's command-line interface DGMGRL can be utilized to manage configurations with GDS, allowing the addition of Data Guard Broker configurations to GDS pools.
* Performing a role change with DGMGRL automatically notifies GDS which in turn activates the appropriate services (B): When a role change is executed using DGMGRL, GDS is automatically notified, and it then activates the services that are appropriate for the new database roles.
* DGMGRL may be used to add a single database to the Sales configuration even if Sales is a member of the Prod pool (C): DGMGRL provides the capability to manage individual databases within a broker configuration, including adding databases to a configuration that is already part of a GDS pool.References:
* Oracle Data Guard Broker documentation
* Oracle Global Data Services documentation
NEW QUESTION # 57
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. Start the observer in a different working directory.
- B. Enable Fast-Start Failover before starting the observer.
- C. Create a broker configuration and enable Fast-Start Failover before starting the observer.
- D. Set the ObserverOverride property to TRUE before starting the observer.
- E. Start the observer using a different observer configuration file.
Answer: A,E
NEW QUESTION # 58
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. 0
- B. 1
- C. 1.4
- D. 1,3,4
- E. 2,3,4
- F. 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 # 59
Your Data Guard environment has a remote physical standby database with real-time query enabled, which is used for reporting, and a logical standby database used for DSS reporting.
Switchovers or failovers are possible due to testing or in case of a disaster.
Clients use local TNSNAMES.ORA files to define connection strings to the database instances.
Which three will prevent clients from connecting to the wrong database instances?
- A. The client applications must use the correct TNS entries when requesting connections to the database instances.
- B. A service name is registered with the local listener of each database instance.
- C. Client TNS entries for the databases use the correct service names for the intended service.
- D. The standby database services must be defined statically with the Listeners running on the standby database hosts.
- E. The DB_NAME and DB_UNIQUE_NAME parameters must be set to the same value for all the databases in the Data Guard environment.
- F. Oracle Net connectivity to the primary database instance must be established on all the standby database instances.
- G. The LOCAL_LISTENER parameter on the primary database instance must always be set.
Answer: A,C,D
Explanation:
Based on Oracle Database 19c: Data Guard Administration documents, the three measures that can prevent clients from connecting to the wrong database instances during switchovers, failovers, or regular operations in a Data Guard environment are:
B . The standby database services must be defined statically with the Listeners running on the standby database hosts.
D . The client applications must use the correct TNS entries when requesting connections to the database instances.
E . Client TNS entries for the databases use the correct service names for the intended service.
In an Oracle Data Guard configuration, correctly configuring Oracle Net Services (including TNS entries and listeners) is crucial for ensuring that clients connect to the appropriate database instance, whether it's the primary or standby. Defining services on the standby database and associating them with listeners ensures that client applications can connect to the standby when needed, especially useful in a role transition or when the standby is open for read-only access or real-time query. It's essential that TNS entries used by client applications specify the correct service names that correspond to the intended database roles, such as primary or standby. This setup facilitates seamless connectivity to the appropriate instance based on the role, especially critical during switchovers and failovers when the roles of the databases change.
Reference:
Oracle's Data Guard concepts and administration guide provides extensive information on configuring network services for Data Guard environments, ensuring that applications connect to the correct database instance based on the current role of the databases in the Data Guard configuration.
NEW QUESTION # 60
Which three statements are true about Data Guard database modes and states?
- A. Force Logging Mode is not required for a primary database but is recommended.
- B. A Logical Standby Database can be in MOUNT state while applying changes.
- C. The Primary Database can operate in noarchivelog mode.
- D. Databases in a Data Guard Configuration need not operate in Flashback Logging mode.
- E. A primary database may ship redo directly to more than nine standby databases.
Answer: A,B,D
NEW QUESTION # 61
Which TWO statements are true regarding Data Guard Broker?
- A. It automatically starts the DMON process for the database instances that are part of a Data Guard configuration.
- B. It can be used to monitor redo transport and log apply services.
- C. It can be used to perform failovers and switchovers.
- D. It automatically adds the primary database to an existing broker configuration when Enterprise Manager Cloud Control is used to create a standby.
- E. It can be used to create and manage standby databases.
Answer: C,E
NEW QUESTION # 62
Your current Data Guard environment consists of:
A primary database containing no abstract data types used for user tables.
Two separate remote physical standby databases used for reporting.
Examine these requirements for adding a new standby database to this Data Guard environment:
The new standby database must provide a disaster recovery solution.
There must be minimal additional performance overheads on the primary database.
The new standby database may require additional indexes and materialized views not present in the primary.
New tables or schemas may be required in the standby database that are not present in the primary.
What would you recommend to fulfill these requirements?
- A. A physical standby database with synchronous redo transport and Real-Time Query enabled.
- B. A logical standby database with synchronous redo transport and SQL apply on.
- C. A logical standby database with asynchronous redo transport and SQL apply on.
- D. A logical standby database with synchronous redo transport and redo apply on.
- E. A physical standby database with asynchronous redo transport and Real-Time Query enabled.
Answer: C
NEW QUESTION # 63
Which TWO statements are true about configuring Oracle Net Service in a Data Guard environment?
- A. It is necessary to use the failover clause for an address_list with multiple address lists in the tnsnames.ora file.
- B. Installing the oracle-database-preinstall-19c package is NOT sufficient to set up operating system kernel parameters for Oracle Net.
- 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: 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.
Reference:
Oracle Data Guard Broker documentation
Oracle Net Services Administrator's Guide
NEW QUESTION # 64
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 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.
- B. Create role based services with the si vet] utility when using clusterware for Oracle RAC databases or Oracle Restart for single instance Oracle databases.
- C. Create database services on each of the standby databases, start the services, and add connection descriptors on the clients to connect to those services.
- D. 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.
- E. Establish Oracle Net connectivity to the primary database instance from all the standby database instances.
Answer: C,D
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 # 65
Examine the Data Guard configuration:
What happens if you issue "switchover to sheep;" at the DGMGRL prompt?
- A. The switchover succeeds but Dogs needs to be reinstated.
- B. The switchover succeeds and Fast-Start Failover is suspended.
- C. The switchover succeeds and Dogs becomes the new failover target.
- D. The switchover succeeds and Cats becomes the new failover target.
- E. It results in an error indicating that a switchover is not allowed.
Answer: C
Explanation:
When issuing a "switchover to sheep;" command in a Data Guard configuration, the primary database (Dogs) transitions to a standby role, and the target standby database (Sheep) becomes the new primary database. Fast-Start Failover (FSFO) remains enabled, but its target changes according to the new roles of the databases. Since Cats is also a physical standby database, it does not become the failover target by default unless it is specified in the broker configuration. After the switchover, the original primary (Dogs) becomes the new standby database and thus the new failover target for FSFO.
Reference:
Oracle Data Guard Broker documentation provides detailed procedures and explanations of switchover operations, including how FSFO targets are affected post-switchover. This behavior is consistent across different Oracle Database versions that support Data Guard and FSFO.
NEW QUESTION # 66
A Data Guard environment has this configuration and these attributes:
The primary database prima is in the local region.
A physical standby database physt1 is in the local region.
A physical standby database physt2 is in a remote region.
The primary ships redo to physt1.
physt1 ships redo to physt2.
physt1 and physt2 have Real-Time Query enabled.
A sequence has been created with this SQL statement in the primary database:
CREATE SEQUENCE a NOCACHE SESSION;
Which TWO statements are TRUE?
- A. physt2 will no longer receive redo if physt1 becomes unavailable, unless LOG_ARCHIVE_DEST_n has the ALTERNATE attribute specified on physt1.
- B. The sequence is usable on physt1 and physt2.
- C. The sequence is usable on physt1 but not usable on physt2.
- D. physt2 will no longer receive redo if physt1 becomes unavailable, unless LOG_ARCHIVE_DEST_n has the ALTERNATE attribute specified on the primary database.
- E. The sequence is usable on physt2 if physt1 becomes unavailable, but only if an alternate redo destination has been configured on the primary database.
Answer: B,D
NEW QUESTION # 67
Examine the Data Guard configuration:
DGMGRL> show configuration;
Configuration - Animals
Protection Mode: MaxAvailability
Databases:
dogs - Primary database
cats - Snapshot standby database
sheep - Snapshot standby database
Fast-Start Failover: DISABLED
Configuration Status:
ORA-01034: ORACLE not available
ORA-16625: cannot reach database "dogs"
DGM-17017: unable to determine configuration status
ou wish to perform a failover to sheep. Which command, or sequence of commands, should you issue to the broker before executing failover to sheep; using the broker?
- A. DGMGRL> convert database sheep to physical standby;
- B. DGMGRL> convert database sheep to physical standby;
DGMGRL> edit configuration set protection mode as maxperformance;
DGMGRL> convert database sheep to physical standby; - C. DGMGRL> convert database cats to physical standby;
- D. DGMGRL> convert database cats to physical standby;
- E. None, because you can directly failover to a Snapshot Standby Database.
Answer: A
NEW QUESTION # 68
Which THREE are true about using flashback database in a Data Guard environment?
- A. When a flashback database operation is performed on a primary database, a logical standby database is also flashed back automatically.
- B. It may not be used to flash back a primary database after a failover to a physical standby.
- C. When a flashback database operation is performed on a primary database, a physical standby database is also flashed back automatically.
- D. It may be used to flash back a physical standby that receives redo from a far sync instance.
- E. 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.
- F. You can use it when real-time apply is enabled in case the physical standby suffers from logical corruption.
Answer: B,D,F
NEW QUESTION # 69
Which TWO are benefits of using Transaction Guard in a Data Guard environment?
- A. It protects against recoverable errors during a planned or an unplanned outage of a primary database.
- B. It provides application continuity by replaying transactions interrupted by a failover or a switchover
- C. It protects against logical corruptions being replicated to standby databases.
- D. It provides application continuity by rolling back uncommitted transactions interrupted by a failover or switchover.
- E. It protects against user errors being replicated to standby databases.
Answer: A,D
Explanation:
Transaction Guard provides benefits in terms of transaction consistency and recovery in a Data Guard environment:
* It provides application continuity by rolling back uncommitted transactions interrupted by a failover or switchover (B): Transaction Guard ensures that any uncommitted transactions at the time of an outage are rolled back consistently, thus preserving the integrity of the application's data and state.
* It protects against recoverable errors during a planned or an unplanned outage of a primary database (D): Transaction Guard offers protection against errors that can occur during outages, allowing applications to resume operations more quickly and reliably after recovery.References:
* Oracle Database High Availability Overview
* Oracle Real Application Clusters Administration and Deployment Guide
NEW QUESTION # 70
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