单项选择题

Which two operations can be flashed back using the Flashback technology？（）

A.DROP USER SMITH；
B.DROP TABLE EMPLOYEES；
C.DROP TABLESPACE USERS；
D.ALTER TABLE SALES_REP DROP PARTITION P1；
E.ALTER TABLE EMPLOYEES DROP COLUMN DESIG_ID；

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单项选择题

Your database is having two control files， three redo log file groups with two members in each group. Failure of which file would cause an instance to shut down？（）

A.any control file
B.any archive log file
C.one of the redo log members
D.loss of the initialization parameter file
E.any data file belonging to the default permanent tablespac

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You have been recently hired as a database administrator. Your senior manager asks you to study the production database server and submit a report on the settings done by the previous DBA. While observing the server settings， you find that the following parameter has been set in the parameter file of the database： REMOTE_OS_AUTHENT = TRUE What could have been the reason to set this parameter as TRUE？（）

A.to enable operating system authentication for a remote client
B.to restrict the scope of administration to identical operating systems
C.to allow the start up and shut down of the database from a remote client
D.to enable the administration of the operating system from a remote client
E.to disable the administration of the operating system from a remote client

单项选择题

Your database is open and users are connected using the LISTENER listener. The new DBA of the system stops the listener by using the following command：
LSNRCTL> STOP
What would happen to the sessions that are presently connected to the database instance？（）

A.The sessions are able to perform only queries.
B.The sessions are not affected and continue to function normally.
C.The active transactions are rolled back and the sessions get terminated.
D.The sessions are not allowed to perform any operations till the listener is started.

Which two operations can be flashed back using the Flashback technology？ （）

相关考题

Which two operations can be flashed back using the Flashback technology？（）