Oracle 1z0-066 Dumps

Oracle 1z0-066 Dumps PDF

Oracle Database 12c: Data Guard Administration
  • 112 Questions & Answers
  • Update Date : June 05, 2024

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Oracle 1z0-066 Sample Questions

Question # 1

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



Question # 2

Which four factors can influence the rate of SQL apply on a logical standby database? 

A. the size of the undo tablespace on the logical standby database 
B. the number of full table scans performed by SQL apply
C. the number of coordinator processes on the standby database instance 
D. the size of the shared pool  
E. the number of APPLIER processes  
F. the number of PREPARER processes  



Question # 3

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 



Question # 4

Which two are true about rolling release upgrades in a Data Guard environment? 

A. The background process DMON must be enabled on the primary and standby databases during a rolling release upgrade procedure
B. A physical standby database can be converted to a logical standby database temporarily. 
C. Rolling release upgrades require the background process RVWR to write flashback logs on the standby database. 
D. The KEEP IDENTITY clause ensures that a logical standby database keeps the same DBID as the primary database. 
E. The recovery point objective increases proportionally to the duration of the rolling release upgrade procedure. 



Question # 5

A data file on one of your physical standby databases has been accidentally deleted and you must restore and recover it. All the archive logs required for recovery are still on disk in the directory pointed to by the log_archive_dest_1 parameter Which three steps must be performed to restore the missing file and recover the standby database while it is in the MOUNT state?

A. Recover the datafile by using the RMAN RECOVER DATAFILE command 
B. Restart the redo apply. 
C. Restore the datafile by using the RMAN RESTORE DATAFILE command.  
D. Stop the redo apply.  
E. Recover the database by using the RMAN RECOVER DATABASE command.  



Question # 6

Examine the Data Guard configuration:DGMGRL> show configuration;Configuration -Animals Protection Mode MaxAvailabilityDatabasesdogs- Primary databasecats- Snapshot standby databasesheep- Snapshot standby databaseFast-Start Failover DISABLEDConfiguration Status: ORA-01034: ORACLE not available ORA-16625: cannot reachdatabase "dogs'1 DGM-17017 unable to determine configuration statusYou wish to perform a failover to SheepWhich command, or sequence of commands, should you issue to the broker beforeexecuting "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 



Question # 7

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. 



Question # 8

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. 



Question # 9

Which three statements are true about Global Sequences when connected to a physical standby database with Real-Time Query enabled?

A. if the CACHE option is set then the size of the cache must be at least 100 
B. Their creation requires that a LOG_ARCHIVE_DEST_n parameter be defined in the standby that points back to their primary 
C. Their usage will always have a performance impact on the primary database. 
D. Their usage may have a performance impact on the physical standby database if the CACHE size is too small 
E. They must have the NOORDER and CACHE options set. 



Question # 10

Your expertise is requested for these customer requirements:1. The Data Guard environment must be in maximum protection mode. 2 Reports must beoffloaded to a physical standby database.3. There must be no lag between the primary and standby databases that affect the reportsproduced.4. The primary database must be resilient in case of a single network failure.Which solution is correct for these requirements?

A. two standby databases, at least one of them a physical standby with Real-Time Query enabled and the STANDBY_MAX_DELAY parameter set to zero, receiving redo from the primary with asynchronous transport 
B. two standby databases, at least one of them a physical standby with Real-Time Query enabled and the STANDBY_MAX_DATA_DELAY parameter set to zero, receiving redo from the primary with synchronous transport 
C. one physical standby database with Real-Time Query enabled, receiving redo from two Far Sync instances that are connected the primary 
D. one physical standby database with Real-Time Query enabled and the STANDBY_MAX_DATA_DELAY parameter set to zero, receiving redo from the primary with synchronous transport 
E. two physical standby databases with Real-Time Query enabled, receiving redo from the primary with the LOG_ARCHIVE_DEST_n attnbutes SYNC NOAFFIRM to minimize the performance impact on the primary. 



Question # 11

Examine the Data Guard configuration:DGMGRL> show configurationConfiguration-AnimalsProtection Mode: MaxAvailabilityDatabases:Sheep- Primary databaseWarning: ORA-16817: unsynchronized fast-start failover configurationDogs - (*) Physical standby database (disabled)ORA-16661: the standby database needs to be reinstatedFast-Start Failover: ENABLED Configuration Status: WARNINGAnd the fast-start failover configuration:DGMGRL> show fast_start failover; Fast-Start Failover: ENABLEDThreshold: 30 seconds Target: dogsObserver: 017.example.com Lag Limit: 30 seconds (not in use) Shutdown Primary: TRUEAuto-reinstate: TRUE Observer Reconnect 10 seconds Observer Override: FALSEConfigurable Failover Conditions Hearth Conditions: Corrupted Controlfile YESInaccessible Logfile NOStuck Archiver NODatafile Offline YESOracle error ConditionsORA-01578: ORACLE data block corrupted (file # %s, block # %s)And finally the reason for the fail over:SQL> select last_failover_reason from v$fs_failover_stats;LAST_FAILOVER_REASONORA-01578: ORACLE data block corrupted (file # %s, block # %s)Identify the task, or sequence of tasks, to bring the configuration into the SUCCESS state.

A. Bring Dogs to the NOMOUNT state and let the broker reinstate Dogs automatically. 
B. MOUNT DOGS and issue ''reinstate database dogs:" at the DGMGRL prompt while connected to Dogs. 
C. MOUNT DOGS and issue "reinstate database dogs:" at the DGMGRL prompt while connected to Sheep 
D. Open Dogs and let the broker reinstate Dogs automatically. 



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. 



Question # 13

A customer asks you to propose the most appropriate solution for this set of requirements:1. We need a disaster recovery solution that enables us to fail over from our productiondatabase with zero data loss.2. We want to generate reports from the proposed standby database at the same time thatit is used for other purposes.3. Developers may need to test occasionally on a copy of the live database.You have to already confirmed that there are no unsupported data types on the primarydatabase Which two solutions would you recommend?

A. a remote physical standby database with RedoRoutesvia a far sync instance  
B. a snapshot standby database with synchronous redo transport  
C. a physical standby database with real-time query enabled  
D. a logical standby database  
E. a read mostly implementation of a physical standby database