Oracle 1Z0-066 Study Guides 2019

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NEW QUESTION 1
Which statement is true regarding Oracle Net connectivity for a Data Guard Broker configuration?

  • A. To start SQL apply on a logical standby database, a TNS entry enabling connectivity to the primary database instance must be defined on the logical standby database host.
  • B. the LOCALJJSTERNER initialization parameter must be set to the listener used to register the primary database instance.
  • C. To enable Reatime Query on a physical standby database, a TNS entry enabling connectivity to the standby database instance must be defined on the primary database host.
  • D. A TNS enabling connectivity to the primary database instance must be defined on each of the standby database hosts.
  • E. A TNS entry or entries enabling connectivity to standby database instance(s) must bedefined on the primary database host.

Answer: D

NEW QUESTION 2
Which two are true about offloading backups to a physical standby database in a Data Guard environment?

  • A. The standby database must be registered in an RMAN catalog after the primary database has been registered
  • B. The standby database cannot be registered in an RMAN catalog if the primary database has not been registered
  • C. Backups of the standby control file taken while connected to the catalog where the database is registered, may be used to restore the control file onthe primary database.
  • D. The standby database must be registered in an RMAN catalog before the primary database has been registered

Answer: BC

NEW QUESTION 3
Which statement is true regarding Oracle Net connectivity for a Data Guard Broker configuration?

  • A. To start SQL apply on a logical standby database, a TNS entry enabling connectivity to the primary database instance must be defined on the logical standby database host.
  • B. the LOCALJJSTERNER initialization parameter must be set to the listener used to register the primary database instance.
  • C. To enable Reatime Query on a physical standby database, a TNS entry enabling connectivity to the standby database instance must be defined on the primary database host.
  • D. A TNS enabling connectivity to the primary database instance must be defined on each of the standby database hosts.
  • E. A TNS entry or entries enabling connectivity to standby database instance(s) must be defined on the primary database host.

Answer: D

NEW QUESTION 4
Examine the Fast-start configuration
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Oracle Error Conditions: (none) Which three are true?

  • A. The observer will initiate a failover when the primary database is unable to produce local archived redo log files.
  • B. An automatic failover will be initiated even if the target standby database lags behind the primary
  • C. The observer is running
  • D. a failover may occur if the observer has lost connectivity to the primary database, even if the Fast-Start Failover target standby database has a good connection to the primary database
  • E. The configuration operates in Maximum Availability mode
  • F. The configuration operates in Maximum Performance mode

Answer: ACE

NEW QUESTION 5
Which two statements are true regarding Data Guard Broker?

  • A. It automatically adds the primary database to an existing broker configuration when Enterprise Manager Cloud Control is used to create a standby
  • B. It automatically starts the DMON process for the database instances that are part of a Data Guard configuration.
  • C. it can be used to perform failovers and switchovers.
  • D. It can be used to create and manage standby databases.
  • E. It can be used to monitor redo transport and log apply services.

Answer: BC

NEW QUESTION 6
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 7
Which two are true about the use of RMAN recovery catalogs when offloading backups to a physical standby database?

  • A. It backups that are offloaded to a physical standby database are taken when not connected to a recovery catalog, then they may still be used for restoration on the primary database.
  • B. The physical standby database may be used to register the database in the recovery catalog, if the primary is not registered.
  • C. The primary and physical standby databases must be registered separately in the recovery catalog, if a far sync instance is used to route redo to the physical standby database.
  • D. It is not necessary to use a recovery catalog unless a far sync instance is used to route redo to the physical standby database.
  • E. Primary and physical standby database may use different virtual recovery catalogs in the same physical recovery catalog

Answer: DE

NEW QUESTION 8
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

Answer: ABE

NEW QUESTION 9
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 production database with zero data loss.
2. We want to generate reports from the proposed standby database at the same time that it 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 primary database 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

Answer: BC

NEW QUESTION 10
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 11
Examine the Data Guard configuration:
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Which three will be true after a switchover to Sheep?

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

Answer: ABE

NEW QUESTION 12
Which three statements are true about standby redo logs in a Data Guard configuration with no Oracle Streams or Goldengate configured?

  • A. They are required on a logical standby for real-time apply
  • B. They are required only for synchronous redo transport.
  • C. Only standby databases can write redo to them.
  • D. It is recommended to have them on the primary database.
  • E. They are required on a physical standby for real-time apply.
  • F. The LGWR process writes to them on a standby database.

Answer: ACE

NEW QUESTION 13
Examine the Data Guard configuration: DGMGRL> show configuration Configuration -Animals
Protection Mode: MaxAvailability Databases:
dogs- Primary database
sheep- (*) Physical standby database cats- Physical standby database
Fast-Start Failover: ENABLED Configuration Status: SUCCESS
What happens if you issue "switchover" to sheep;" at the DGMGRL prompt?

  • A. The switchover succeeds but Dogs need to be reinstated
  • B. The switchover succeeds but Fast-Start Failover is suspended.
  • C. The switchover succeeds and Cats become the new failover target.
  • D. The switchover succeeds and Dogs become the new failover target
  • E. it results in an error indicating that a switchover is not allowed.

Answer: D

NEW QUESTION 14
You are licensed to use Oracle Active Data Guard
Which two statements are true after enabling block change tracking on a physical standby database?

  • A. it allows fast incremental backups to be offloaded to the physical standby database
  • B. It starts the CTWR process on the physical standby database instance
  • C. it allows fast incremental backups to be taken on the primary database.
  • D. It starts the RVWR process on the physical standby database instance.
  • E. It allows fast incremental backups to be offloaded to a snapshot standby database, when the physical standby database in converted.
  • F. It starts the CTWR process on the primary database instance.

Answer: AB

NEW QUESTION 15
Examine the Data Guard configuration:
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Which three will be true after a switchover to Sheep?

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

Answer: ABE

NEW QUESTION 16
Which three are prerequisites for enabling Fast-Start Failover?

  • A. The Fast-Start Failover target standby database must receive REDO directly from the primary database
  • B. Flashback Database must be enabled on both the primary database and the Fast-Start Failover target standby database.
  • C. Flashback Database must be enabled only on the Fast-Start Failover target standby database.
  • D. The configuration must be operating in either Maximum Performance or Maximum Availability mode
  • E. The configuration must be operating in either Maximum Performance or Maximum Protection mode
  • F. The Data Guard environment must be managed by the Data Guard Broker.

Answer: BDF

NEW QUESTION 17
Which three statements are true about Data Guard configurations?

  • A. All databases in one Data Guard environment must have the same database name.
  • B. VALID_FOR is a LOG_ARCHIVE_DEST_N attribute that enables DB role change operations without having to modify LOG_ARCHIVE_DEST_nwhen performing switchovers or failovers.
  • C. For Standard Edition, LOG_ARCHIVE_DUPLEX_DEST is used to configure redo transport, from the primary to the standby database.
  • D. When using the Data Guard Broker, an spfile is not required.
  • E. Up to 30 physical standby databases may exist within one configuration.
  • F. The Oracle recommendation for the number of standby redo log groups per thread is one more than the number of online redo log groups per thread

Answer: AEF

NEW QUESTION 18
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 19
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 20
On your logical standby database, you specified these rules:
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Which is true regarding the execution of the UNSKIP procedure?

  • A. it succeeds only if SQL apply is stopped before deleting the SQL Apply filter
  • B. it succeeds but the SQL Apply fitters are not deleted.
  • C. It deletes both the SQL Apply filters.
  • D. it returns an error because the syntax to delete a SQL Apply filter must specify the same object names as specified when the filter was added
  • E. it succeeds only if all DML statements executed on the primary have been applied on the logical standby

Answer: D

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