单项选择题
Your database is open and the LISTENER listener is running. The new DBA of the system stops the listener byusing the command：LSNRCTL> STOP
What happens 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 sessions are terminated and the active transactions are rolled back.
D.The sessions are not allowed to perform any operations till the listener is started
相关考题
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单项选择题
You have two tables with referential integrity enforced between them. You need to insert data to the child tablefirst because it is going to be a long transaction and data for the parent table will be available in a later stage，which can be inserted as part of the same transaction. View the Exhibit to examine the commands used tocreate tables. Which action would you take to delay the referential integrity checking until the end of thetransaction（）
A.Set the constraint to deferred before starting the transaction.
B.Alter the constraint to NOVALIDATE state before starting the transaction.
C.Enable the resumable mode for the session before starting the transaction.
D.Set the COMMIT_WAIT parameter to FORCE_WAIT for the session before starting the transaction -
单项选择题
ViewtheExhibittoexaminetheoutputproducedbythefollowingqueryatthreedifferenttimessincethedatabaseinstancestartedandhasexperiencedworkloadsofdifferentcapacities：SQL>SELECTsubstr（component，0，10）COMP，current_sizeCS，user_specified_sizeUSFROMv$memory_dynamic_componentsWHEREcurrent_size!=0；Whatdoyouinferfromthis（）
A.The database instance is running with manual PGA management.
B.The database instance is running with manual shared memory management.
C.The database instance has the MEMORY_TARGET value set to a nonzero value.
D.All sessions are connected to the database instance in dedicated mode， and no RMAN or parallel queryoperations have been performed -
多项选择题
Youperformdifferentialincrementallevel1backupsofyourdatabaseoneachworkingdayandlevel0backuponSundays，totape.Whichtwostatementsaretrueaboutdifferentialincrementalbackups（）
A.The backup performed on Sundays contains all the blocks that have ever been used in the database.
B.The backup performed on Sundays contains all the blocks that have changed since the last level 1 backup.
C.The backup performed on each working day contains all the blocks that have changed since the last level 0 backup.
D.The backup performed on Monday contains all the blocks that have changed since the level 0 backup， and every other working day contains all the blocks that have changed since the level 1 backup
