多項(xiàng)選擇題

These are the details about V$FLASHBACK_DATABASE_STAT： SQL> DESC v$FLASHBACK_DATABASE_STAT
Name Null？ Type
------------- -------- --------------
BEGIN_TIME DATE
END_TIME DATE
FLASHBACK_DATA NUMBER
DB_DATA NUMBER
REDO_DATA NUMBER
ESTIMATED_FLASHBACK_SIZE NUMBER
Which two statements regarding the V$FLASHBACK_DATABASE_STATview aretrue？（）

A. BEGIN_TIME is the time at which Flashback logging is enabled.
B. END_TIME is the time at which the query is executed on the view.
C. REDO_DATA is the number of bytes of redo data written during the interval.
D. This view contains information about flashback data pertaining to the last 24 hours.
E. FLASHBACK_DATA is the amount of flashback data generated since the database was opened.

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單項(xiàng)選擇題

You were recently hired by Certkiller .com as a database administrator. You are asked to find out whether the currently functional listener process， named L1， has been password protected or not. You are not familiar with the file system of the new organization. How would you accomplish the task？（）

A. by using the STATUS command of the Listener control utility
B. by using the STATUS L1 command of the Listener control utility
C. by using the SHOW RULES command of the Listener control utility
D. by using the SET PASSWORD command of the Listener control utility
E. by searching for the PASSWORD_LISTENER entry in the listener.ora file

多項(xiàng)選擇題

When performing a backup using Recovery Manager （RMAN）， which four types of files can be backed up with the RMAN BACKUPcommand？（）

A. data file
B. password file
C. archivelog file
D. temporary file
E. online redo log file
F. the current control file
G. the tnsnames.ora file
H. current server parameter file

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When performing a backup using Recovery Manager （RMAN）， which four types of files can be backed up with the RMAN BACKUPcommand？ （）

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When performing a backup using Recovery Manager （RMAN）， which four types of files can be backed up with the RMAN BACKUPcommand？（）