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2013-11-13 22:16:51  來源: Oracle 

  覆蓋率可以不過答案不是很准確
  
   What are two benefits of making recovery operations parallel? (Choose two)
  Answer: Recovering more than one data file
   With the instance down how would you recover a lost control file?
  Answer: Use the CREATE CONTROLFILE command
   You are restoring a backup data file to a different location To recover
  successfully what must you do?
  Answer: Use the ALTER DATABASE command to rename the data file
   Which two benefits does the command ALTER DATABASE MOUNT
  CLOSE DATABASE offer for the tablespace pointintime recovery?
  (Choose two)
  Answer: It prevents accidental corruption of the primary database
  It allows you to remove a data file that has been added to the wrong tablespace
   Which statement about cancelbased recovery is true?
  Answer: Recovery is stopped by entering CANCEL at the recovery prompt
   A media management layer is always used when Recovery Manager
  ________
  Answer: Performs media recovery
   Why would you set a data file offline when the database is in MOUNT state?
  Answer: To allow for automatic data file recovery
   When configuring a database in ARCHIVELOG mode and enabling automatic archiving the database must be shut down and opened in the MOUNT stage Which three options can be used to do this? (Choose Three)
  Answer: SHUTDOWN NORMAL AND STARTUP MOUNT
  SHUTDOWN IMMEDIATE AND STARTUP MOUNT
  SHUTDOWN TRANSACTIONAL AND STARTUP MOUNT
   When configuring a database in ARCHIVELOG mode and enabling automatic archiving the database must be shut down and opened in the MOUNT stage Which two options should not be used to do this? (Choose two)
  Answer: STARTUP FORCE MOUNT
  SHUTDOWN ABORT and STARTUP MOUNT
   What is the correct procedure for multiplexing existing online redo logs?
  Answer: Issue the ALTER DATABASE ADD LOGFILE MEMBER command
   In the view V$DATAFILE_HEADER what does value YES in the FUZZY column as specified?
  Answer: The data file is in backup mode
   During an opened database backup a power failure occurs Which SQL statement do you issue to resolve this situation after mounting the database?
  Answer: ALTER DATABASE DATAFILE n END BACKUP
   You perform an incomplete recovery using RMAN You write the following
  script:
  RUN{
  SET UNTIL TIME = yyyynmdd:hh:mi:ss;
  RESTORE DATABASE;
  RECOVER DATABASE;
  SQL alter database open resetlogs;}
  Which command is missing?
  Answer: RELEASE CHANNEL
   Which statement regarding Recovery Manager with a database operating in
  NOARCHIVELOG mode is true?
  Answer: Recovery Manager supports multilevel incremental backups
   After rebuilding the recovery catalog by resynchronizing it with a copy of the backup control file you notice references to files that no longer exist Which CRETAE command clause should you use to remove these references?
  Answer: UNCATALOG
   When configuring a database for ARCHIVELOG mode you use initialization parameter to specify which two actions? (Choose two)
  Answer: Where log files will be archived The names that will be given to archived log files
   A tablespace becomes unavailable because of a failure The database is
  running in NOARCIVELOG mode? What should the DBA do to make the database available?
  Answer: Restore the data files redo log files and control files from an earlier copy of a full database backup
   In which situation would you need to create a new control file for an existing
  database?
  Answer: When MAXLOGMEMBERS needs to be changed
   Why would a DBA load a table using the NOLOGGING options?
  Answer: To reduce redo during a direct loaded operation
   Which technique does Oracle use to perform full backups of data files?
  Answer: The server process reads the entire file and skips blocks that have never
  been used
   Which statement regarding the allocation of processes to Recovery Manager is true?
  Answer: Setting BACKUP_TAPE_IO_SLAVES=TRUE will enable a dedicated
  slave to write to a tape device
   What is the effect of issuing an ALTER DATABASE OPEN RESETLOGS command on the primary database?
  Answer: It invalidates the standby database
   In order to keep a standby database uptodate archived redolog files need
  to be transferred from the primary to the standby server What are two ways
  to do this? (Choose two)
  Answer: Specify LOG_SARCHIVE_DEST_n on the standby database
   When configuring a database for ARCHIVELOPG mode you use an initialisation parameter to specify which action?
  Answer: That the database is in ARCHIVELOG mode
   You have just created a script in Recovery Manager After noticing an error
  in the script you decide to recreate it Which command replaces the stored script in the recovery catalog?
  Answer: REPLACE_SCRIPT
   When two or more databases are backed up using RMAN is it appropriate
  to use each database as the others recovery catalog? Why?
  Answer: No A database that contains a catalog cannot be target database
   What is the advantage of managed recovery mode?
  Answer: The standby database automatically applies the archived redo log when the
  files become available
   Which import option do you use to create tables without data?
  Answer: ROWS
   Which statement is true when using the LogMiner utility?
  Answer: The dictionary file is created in a directory as defined as defined by
  UTL_FILE_DIR
   The developers have implemented parallel DML operations How can a DBA
  make sure that the archiving process is able to keep up with archiving the redolog files?
  Answer: Spawn multiple database writers
   Which action does Oracle recommend after a DBA recovers from the loss of
  the current online redolog?
  Answer: Back up the instance
  Back up the control file
   What is the last step when setting up a recovery catalog?
  Answer: Run the REGISTER DATABASE command
   What is the difference between using NOLOGGING operations in a single
  database environment and a standby database environment?
  Answer: NOLOGGING operations can be used on the standby database but not on the primary database
   What is the function of SMON in instance recovery?
  Answer: It roles forward by applying changes in the redo log
   What are two causes of user errors? (Choose two)
  Answer: Incorrect data is committed
  A table is accidentally truncated
   Which statement is true when using the DELIVERY utility to detect corruptions in an Oracle data block?
  Answer: The utility can be used to verify the data files of a backup database
   The alert log can contain specific information about which database backup activity?
  Answer: Placing tablespace in begin and end backup mode
   In which two situations would you have to apply redo information to a readonly
  tablespace? (Choose two)
  Answer: When the tablespace being recovered is writeable but was readonly when the last backup occurred
  When the tablespace being recovered is readonly but was writeable when the last backup occurred
  
   Your database is configured in ARCHIVELOG mode Which three types of
  backups can be performed? (Choose three)
  Answer: Open database backups
  Operating system back
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