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.Enables easier loading of multinational data. 
B.Uses a fixed-width Multibyte encoding sequence.
C.Asian characters are represented in three characters. 
D.Used a variable-width Multibyte encoding sequence. 
E.European characters are represented on one or two bytes. 

A.It can contain parameters with distinct values for each distance.
B.It can contain only parameters with identical values for each instance.
C.It must contain an IFILE parameter for each instance’s individual parameter file.
D.It must be located in the default location for the primary instance’s parameter file.

A.Data blocks have to be written more frequently by DBWR. 
B.Redo blocks have to be written more frequently by LGWR. 
C.You need to substantially increase the size of your database buffer cache to hold the additional checkpoint records. 
D.You need to substantially increase the size of your redo buffer cache to hold the additional checkpoint records.