1z0-066 Exam - Oracle Database 12c: Data Guard Administration

NEW QUESTION 1
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'1 DGM-17017 unable to determine configuration status
You 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 cats to physical standby,
• B. DGMGRL> convert database sheep to physical standby;
• C. DGMGRL> convert database sheep to physical standby; DGMGRL> convert database cats to physical standby;
• D. DGMGRL>edit configuration set protection mode as maxperformance; DGMGRL> convert database sheep to physical standby;
• E. None, because you can directly failover to a Snapshot Standby Database

Answer: C

NEW QUESTION 2
Which three are true concerning Automatic Block Media Recovery in a Data Guard environment when running an application as an ordinary Oracle user?

• A. Real Time Query must be enabled on the primary database
• B. Real Time Query must be enabled on the physical standby database.
• C. |f a physically corrupt block is discovered on a physical standby database, then a valid block image from the primary database is retrieved.
• D. If a physically corrupt block is discovered on the primary database, then a valid block image from a physical standby database is retrieved
• E. if a physically corrupt block is discovered on a logical standby database, then a valid block image from the primary database is retrieved.
• F. If a physically corrupt block is discovered on a primary database, then a valid block image from the logically standby database is retrieved.

Answer: BCD

NEW QUESTION 3
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 reasons for this error

• A. Fast-Start Failover is not yet enabled for this Data Guard configuration
• B. The observer configuration file is marked read-only.
• C. There is already an observer running for this Data Guard configuration.
• D. There is another observer running for a Data Guard configuration which uses the same observer configuration file
• E. The broker configuration has not yet been created.

Answer: BD

NEW QUESTION 4
Which two statements are true for Data Guard environments with mufti-tenant databases?

• A. Different pluggable databases within a logical standby database may have different guard statuses.
• B. The Data Guard broker automatically always opens the pluggable databases of a standby database after a role change operation.
• C. The Data Guard broker automatically opens all pluggable databases of a primary database a role change operation.
• D. The CDBDBA privilege must be used instead of the SYSDBA privilege for connections as SYS to the root container of a multi-tenant standby database.
• E. A multi-tenant standby database can have fewer pluggable databases than the primary container database

Answer: CD

NEW QUESTION 5
Examine the Data Guard configuration:

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

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

Answer: BCD

NEW QUESTION 6
A Data Guard environment has this configuration and these attributes:
1. The primary database prima is in the local region.
2. A physical standby database physt1 is in the local region.
3. A physical standby database physt2 is in a remote region.
4. The primary ships redo to physt1.
5. physt1 ships redo physt2.
6. 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. The sequence is usable on physt1 and physt2
• B. The sequence is usable on physt1 but not usable on physt2.
• C. The sequence is usable on physt2 if physt1 becomes unavailable, but only if an alternative redo destination has been configured on the primarydatabase.
• D. physt2 will no longer receive redo if phystl becomes unavailable, unless LOG_ARCHIVE_DEST_n has the ALTERNATE attribute specified on the primary database.
• E. physt2 will no longer receive redo if physt1 becomes unavailable, unlessLOG_ARCHIVE_DEST_n has the ALTERNATE attribute specified on physt1.

Answer: CE

NEW QUESTION 7
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 size of the buffer cache on the physical standby database instances.
• B. Increase the number of standby redo log files on the standby databases.
• C. Decrease the redo log file size on the primary database.
• D. Lower DB_BLOCK_CHECKING to MEDIUM or LOW on the standby databases.
• E. Increase the size of standby redo log files on the standby databases.

Answer: AD

NEW QUESTION 8
Which three are always benefits of using a logical standby database?

• A. it can be used for database rolling release upgrades
• B. it can be used to replicate a single pluggable database (PDB) in a multitenant container database.
• C. It can be used as an updatable database for Real Application testing and then converted back to a standby database without affecting the updates.
• D. It can be used for reporting workloads requiring additional indexes or materialized viewsor both.
• E. It provides a disaster-recovery solution with switchover and failover options that can recover any data updated on the primary database.
• F. it can be used for testing patches without affecting the primary database.

Answer: CDF

NEW QUESTION 9
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 reasons for this error

• A. Fast-Start Failover is not yet enabled for this Data Guard configuration
• B. The observer configuration file is marked read-only.
• C. There is already an observer running for this Data Guard configuration.
• D. There is another observer running for a Data Guard configuration which uses the same observer configuration file
• E. The broker configuration has not yet been created.

Answer: BD

NEW QUESTION 10
In which two cases is it possible to change the protection mode to maximum protection using Enterprise Manager Cloud Control?

• A. a snapshot standby database is the only standby database in the Data Guard configuration.
• B. A logical standby database is the only standby database in the data guard configuration.
• C. A far sync instance is the only Data Guard configuration member receiving redo in synchronous mode.
• D. Flashback is not enabled for either the primary database, the standby database, or both in the Data Guard configuration.
• E. The primary and standby databases are hosted on different operating systems.

Answer: BE

NEW QUESTION 11
Examine the Data Guard configuration:

Which three will be true after a switchover to Dogs?

• A. Sheep will be an enabled logical standby database.
• B. Cats will be an enabled physical standby database
• C. Dogs will be the primary database
• D. Sheep will be a disabled logical standby database
• E. Cats will be a disabled physical standby database

Answer: BCE

NEW QUESTION 12
A query on the view DBA_LOGSTBY_UNSUPPORTED on your primary database returns no rows
As a result of this, you decide that an upgrade may use logical standby databases. Which two are true about upgrading Data Guard environments consisting of one logical
standby database running on a separate host from the primary?

• A. The upgrade always requires downtown until the upgrade of the logical standby is completed
• B. Using manual upgrade, catctl.pl can be executed in some cases on the primary and standby database simultaneously.
• C. The upgrade always required downtime until the upgrade of the primary is completed
• D. Using manual upgrade, catupgr.sql needs to run on the primary database only.
• E. SQL Apply on the local standby database must be stopped while the primary database is upgraded.
• F. Fast-Start Failover can be used to protect the primary database during the upgrade.

Answer: BE

NEW QUESTION 13
After converting your physical standby database to a logical database, you get an error:

How can you rectify the error?

• A. Add a logical standby database PRODSBY and enable it, thereby replacing the physical standby database metadata in the broker configuration.
• B. Remove the physical standby database PRODSBY from the broker configuration, add a logical standby database PRODSBY to the broker configuration and enable it.
• C. Reinstate the physical standby database PRODSBY as a logical standby, thereby replacing the physical standby database metadata in the broker configuration.
• D. Reinstate both the primary and physical standby databases The broker will automatically detect that PRODSBY is a logical standby update to the metadata.

Answer: D

NEW QUESTION 14
You must configure an Oracle Data Guard environment consisting of:
1. A primary database
2. A Physical Standby Database
3. A Snapshot Standby Database You must meet these requirements:
1. Primary database availability should not be compromised by the availability of the standby databases.
2. Under normal operations, transactions executed on the primary database should not commit before redo is written to disk on the primary database and on at least one standby database.
Which redo transport mode, and which protection mode should you configure to meet these requirements?

• A. SYNC AFFIRM and Maximum Protection
• B. SYNC NOAFFIRM and Maximum Protection
• C. SYNC AFFIRM and Maximum Availability
• D. SYNC NOAFFIRM and Maximum Availability
• E. ASYNC and Maximum Performance

Answer: C

NEW QUESTION 15
Which three types of backups taken in which situations may be used to perform restore operations to a logical standby database in a Data Guard environment?

• A. backups of data files taken on the primary database if connected to the recovery catalog where the logical standby database is registered
• B. backups of data files taken on the standby database if connected to the recovery catalog where the logical standby database is registered
• C. backups of control files taken on the primary database if connected to the recovery catalog where the logical standby database is registered
• D. backups of data files taken on the logical standby database, if not connected to arecovery catalog
• E. backups of control files taken on the logical standby database if not connected to a recovery catalog

Answer: ADE

NEW QUESTION 16
Your Data Guard environment has two remote physical standby databases.
Client applications use the local naming method to define connectivity to the primary database instance.
Which will automatically redirect clients to the new primary database in case of a switchover or failover?

• A. Create a database service on the standby databases; automate the start of the service after a role change, and modify the connection description on the clients to use that service.
• B. Configure a PRIMARY role service on the Primary and Standby and modify the Client connect descriptor to include both Primary and the Standby.
• C. Set the DB_NAME parameter identically on all databases; modify the connection descriptor on the clients to use DB_NAME to connect to the primary database instance.
• D. Set the LOCALJJSTENER parameter for all the database instances, to register services with the default listener on the primary database host.

Answer: C

NEW QUESTION 17
Which four are true about DGMGRL show command?

• A. It can be used to show properties of a pluggable standby database.
• B. it can be used to show properties of a pluggable primary database.
• C. it can be used to show instance-specific properties for a RAC database.
• D. it can be used to show properties of a far sync instance
• E. it can be used to show Fast Start Failover properties.
• F. It can be used to show properties of a primary container database.

Answer: ABEF

NEW QUESTION 18
Which three are benefits of using the Data Guard Broker to manage standby databases?

• A. it simplifies physical standby database creation
• B. It provides an easy failover capability using a single command.
• C. it coordinates database state transitions and updates database properties dynamically.
• D. it automatically changes database properties after the protection mode for a configuration is changed
• E. It provides an easy switchover capability using a single command.
• F. It simplifies logical standby database creation.

Answer: BCE

NEW QUESTION 19
Which two are true about the creation of a Data Guard Broker configuration?

• A. in a broker configuration, the primary database name must match the DB_UNIQUE_NAME value in the database initialization parameter file.
• B. A primary database profile may be added to the configuration prior to creating the primary database.
• C. A standby database profile may be added to the configuration prior to creating that standby database.
• D. A newly created broker configuration requires at least one standby database profile to be specified at the time the configuration is created.
• E. A newly created broker configuration is in the disabled state

Answer: DE

NEW QUESTION 20
Which three are true concerning restoring of RMAN backups to primary and physical standby databases in a Data Guard environment?

• A. Backups of data files taken on the primary database may be restored on a physical standby database.
• B. Backups of control files taken on the primary database may not be restored and used on a physical standby database.
• C. Backups of SPFILEs taken on a physical standby database may not be restored on the primary database.
• D. Backups of control files taken on a physical standby database may be restored on the primary database.
• E. Backups of data files taken on a physical standby database may be restored on a pnmary database.
• F. Backups of SPFILEs taken on the primary database may not be restored and used on a physical standby database.

Answer: CEF

NEW QUESTION 21
A customer has these requirements for their potential Data Guard implementation:
1. Zero data loss must still be guaranteed through the loss of any one configuration component.
2 The primary database must be protected against a regional disaster
3. Performance overheads on the primary should be minimized as much as possible given these requirements.
4. Downtime on the primary database for any reason must be kept to a minimum. Components referred to in the broker commands are:

Which Data Guard broker commands are needed to implement these requirements?

• A. EDIT DATABASE prima SET PROPERY REDOROUTES=' (LOCAL: physt1, FASTSYNC)'; EDIT DATABASE prima SET PROPERY REDOROUTES=' (LOCAL: fs1 SYNC)'; EDIT FAR_SYNC fs1 SET PROPERTY REDORUOTES=' (pnma: physt2 SYNC)'; EDIT CONFIGURATION SET PROTECTION MODE AS MAXAVAILABILITY
• B. EDIT DATABASE prima SET PROPERY REDOROUTES=' (LOCAL: fs1 ASYNC)'; EDIT FAR_SYNC fs1 SET PROPERTY REDORUOTES=' (prima physt FASTSYNC)'; EDIT CONFIGURATION SET PROTECTION MODE AS MAXPROTECTION
• C. EDIT DATABASE prima SET PROPERY REDOROUTES^' (LOCAL: fs1 SYNC)'; EDIT FAR_SYNCfs1 SET PROPERTY REDORUOTES=' (prima physt ASYNC)'; EDITCONFIGURATION SET PROTECTION MODE AS MAXAVAILABILITY;
• D. EDIT DATABASE prima SET PROPERY REDOROUTES=' (LOCAL: physt1, FASTSYNC)'; EDIT DATABASE prima SET PROPERY REDOROUTES= (LOCAL: fs1. FASTSYNC)'; EDIT FAR_SYNC fs1 SET PROPERTY REDORUOTES=' (prima: physt2 ASYNC)'; EDIT CONFIGURATION SET PROTECTION MODE AS MAXAVAILABILITY;

Answer: A

NEW QUESTION 22
Which two are prerequisites for configuring flashback database for Oracle 12c databases, in a Data Guard environment?

• A. a flash recovery area must be configured
• B. The database must be in MOUNT state.
• C. The database must be in ARCHIVELOG mode.
• D. A far sync instance must be configured to flash back a standby when the primary has been flashed back.
• E. The Data Guard Broker must be used.

Answer: AC

NEW QUESTION 23
You are required to change the Data Guard Configuration protection mode from MAXPERFORMANCE to MAXAVAJLABILITY using Enterprise Manager Cloud Control
Which two are true about this change?

• A. If the primary database cannot write its redo to at least one synchronized standby database, then the protection level remains unchanged.
• B. The primary database instance will remain up and running, if it cannot write redo to at least one synchronized standby database.
• C. Transactions will not commit until all redo data needed to recover those transactions are written to the online redo log, and to the standby redo log on at least one synchronizes standby database.
• D. Fast start failover can be enabled when making the chance.
• E. Real time apply will be automatically turned on.

Answer: BC

NEW QUESTION 24
You edit the DGConnectldentifier database property using the edit database set property DGMGRL command Which two are effects of this change?

• A. The fal_client database initialization parameter on all standby databases is updated with the new value.
• B. The service attribute of the log_archive_dest_n initialization parameter for any database referring to the specified database is updated with the new value.
• C. The fal_client database initialization parameter for the specified database is updated with the new value
• D. The broker configuration must be disabled and then enabled to use the new connection property.
• E. The service attribute of the log_archive_dest_n initialization parameter referring to all standby databases is updated with the new value

Answer: AB

NEW QUESTION 25
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