Oracle 11g 새로운 기능 의 Create pfile from memory

Oracle 11g    Create pfile from memory
  Oracle        spfile,memory,pfile .
      create pfile from spfile  create spfile from pfile.
 Oracle 11g          （memory）       pfile.
1.    
select * from v$version;
2.      
alter session set sql_trace=true;
3.      
create pfile from memory;
4.  session  
 alter session set sql_trace=false;
      init  ,   init<ORACLE_SID>.ora,             .
 
Oracle 11g    ，                         ：
 select name ,value from v$parameter where isdefault='FALSE';
 
       
  select name ,value from v$parameter where isdeprecated='FALSE';
  
  
    explain  v$parameter        .
  set autotrace trace explain
  select * from v$parameter;
 
           v$parameter       X$KSPPI X$KSPPCV   .