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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 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

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考题 单选题You have lost all your database control files. To recover them, you are going to use the results of the alter database backup controlfile to trace command. Your datafiles and your online redo logs are all intact.  Which of the following is true regarding your recovery?()A  You will need to open the database with the resetlogs command.B  All you need to do is execute the trace file from SQL*Plus and it will perform the recovery for you.C  You will use the resetlogs version of the create controlfile command.D  You will use the noresetlogs version of the create controlfile command.E  You will use the trace file to create a backup control file, and then you will recover the database with the recover database using backup controlfile command