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单选题
You issue this statement:ALTER DATABASE BACKUP CONTROLFILE TO TRACE;  What does the statement generate?()
A

A text copy of the control file.

B

A binary copy of the control file.

C

A file containing a SQL statement which will re-create the database.

D

A file containing a SQL statement which will re-create the control file.


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考题 单选题You issued the following statement:  SQL ALTER DATABASE BACKUP CONTROLFILE TO TRACE;  What will be the result of issuing the statement?()A  The control file will be multiplexed.B  The control file will be recreated.C The script containing the CREATE CONTROLFILE statement will be created.D  The binary backup of the control file will be created.

考题 单选题In which scenario will you issue the following command?()      SQL RECOVER DATABASE UNTIL TIME ’2005-10-04 : 12:09:08’ USING        BACKUP CONTROLFILE;A  when all the control files are missing and only a binary backup of the current control file existsB  when a multiplexed copy of the current control file is missingC when all the control files are missing and only a script containing the CREATE CONTROLFILE statement existsD  when the SPFILE is missing

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考题 多选题What methods are available to recover lost control files?()ABackup control file.BEmergency control file.CThe create controlfile command.DThe restore controlfile SQL*Plus command.ENo backup is required. The database will re-create the control file when it is discovered to be lost.

考题 单选题In which of the following scenarios is a tablespace recovery required?()A  when recovering a lost read-only tablespace from a read-only tablespace backupB  when recovering a lost read-only tablespace from a read-write tablespace backup when the database is running in  ARCHIVELOG modeC  when recovering a lost read-only tablespace from a read-write tablespace backup when the database is running in  NOARCHIVELOG mode and the changes in the online redo log files have been overwrittenD  when recovering a lost read-only tablespace from a read-only tablespace backup using the backup of the control file, the control file was created using the ALTER DATABASE BACKUP CONTROLFILE TO TRACE statement, and this statement was issued when the tablespace was read-only

考题 单选题You have discovered that one of three control files has been lost. What steps would you follow to recover that control file?()   a. Shut down the database.  b. Restore a control-file copy from backup media.  c. Use the create control file command to create a new control file.  d. Copy the backup control file into place.  e. Create a new copy of the control file from one of the surviving control files.  f. Recover the database using the recover database using backup control file command.  g. Start up the database.A a, b, f, gB c, f, gC a, d, f, gD a, f, gE a, e, g

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