在Oracle中， Which three statements 。。。spfile。 ()

 Which three statements regarding the server parameter file (SPFILE) are true? (Choose three.)

A、An SPFILE is abinary file.

B、An SPFILE cannot reside on a client.

C、An SPFILE cannot contain static parameters.

D、An SPFILE can store changes persistently across instance restarts.

E、An SPFILE can be read by the database server , but it is not written to by the server.

F、An SPFILE  must  be  created  manually ,  before  creating  a  database,  even  if  you  use  the  Database Configuration Assistant(DBCA) to create the database.