In which three cases does a checkpoint occur？ （）

单项选择题Whatistrueregardingdirect-loadinsert？（）

A.A direct-load insert can be invoked by suing the APPEND hint.
B.Inserting using the NOLOGGING option is the default for direct-load inserts.
C.All data loaded using direct-load insert is loaded below the high-water mark.
D.An object that is modifies using parallel direct-load can be queried within the same Transaction.

多项选择题AwebbrowsercanconnectdirectlytoanOracleserverusingwhichtwo？（）

A.HTTP
B.IIOP
C.TCP/IP
D.Named Pipes
E.TCP/IP with SSL

单项选择题WhichRMANcommanddoyouusetoverifythattheRMANrepositoryinformationissynchronizedwiththeactualfilesthatexistondisk？（）

A.LIST
B.CHANGE
C.CATALOG
D.CROSSCHECK

多项选择题You issue this RMAN command：   RMAN> create script Level0Backup {   backup   incremental level 0   format ‘ u01 db01 backup %d_%_Sp’   fileperset 5   （database include current controlfile）；   sql ‘alter database archive log current’；   }  Which three statements are true about the Level0Backup script you just created？（）

A.The script is stored only in the control file.
B.The script is stored only in the recover catalog.
C.The script can be executed only by using the RMAN RUN command.
D.The commands of the script can be displayed with the LIST command.
E.The commands of the script can be displayed with the PRINT command.
F.The commands of the script can be displayed with the REPORT command.

单项选择题The Oracle Shared Server architecture reduces memory usage by reducing the number of server processes required. To process a request for a server process， the following tasks are performed：   1.A shared server picks up the request from the request queue and processes the  request.  2.The dispatcher retrieves the response from the response queue.  3.A user sends a request to its dispatcher.  4.The dispatcher returns the response to the user.  5.The shared sever places the response on the calling dispatcher’s response queue.  6.The dispatcher places the request into the request queue in the SGA.   Put the above task in the order in which they are performed.（）

A.3，1，6，2，5，4
B.3，6，1，5，2，4
C.3，1，2，3，4，5
D.6，1，3，5，2，4
E.6，3，1，2，4，5
F.6，3，1，2，5，4