多项选择题

Which two statements regarding the FLASHBACK_TRANSACTION_QUERY view are correct?（）

A.You can find information about only active transactions from the view
B.You can find information about read only transactions from the view
C.You require the SELECT ANY TRANSACTION system privilege to access the view
D.You can find information about both active and committed transactions from the view
E.You require the SELECT ON FLASHBACK_TRANSACTION_QUERY object privilege to access the view

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单项选择题

You want to perform the database backup when user activity on your system is low, such as between 12:00 a.m. and 2:00 am. Which command terminates with an error if the backup is not complete at the end of the specified duration?（）

A.RMAN> BACKUP DURATION 2:00 MINIMIZE LOAD DATABASE
B.RMAN> BACKUP DURATION 2:00 PARTIAL FILESPERSET 1 DATABASE
C.RMAN> BACKUP DURATION 2:00 PARTIAL MINIMIZE TIME DATABASE
D.RMAN> BACKUP AS COPY DURATION 2:00 PARTIAL MINIMIZE LOAD DATABASE

单项选择题

You have three temporary tablespace groups named G1, G2, and G3 in your database. You are creating a new temporary tablespace as follows: CREATE TEMPORARY TABLESPACE TEMP1 TEMPFILE /u1/data/temp1.dbf SIZE 10M TABLESPACE GROUP ;Which statement regarding the above command is correct?（）

A.It will create the tablespace TEMP1 in group G1
B.It will create the tablespace TEMP1 in group G3
C.It will not add the tablespace TEMP1 to any group
D.It will create the tablespace TEMP1 in the default group
E.It will throw an error with message 'specified group is not available
F.It will create a new group with a system-generated name and add the tablespace TEMP1 to it.