oracle如何设置show parameter显示隐含参数

C:\Documents and Settings\guogang>sqlplus / as sysdba;
SQL> create or replace view my_v$parameter_with_hidden (NUM,NAME , TYPE , DISPLAY_VALUE ,
 ISDEFAULT , ISSES_MODIFIABLE , ISSYS_MODIFIABLE ,ISMODIFIED , 
 ISADJUSTED, DESCRIPTION, UPDATE_COMMENT) 
  as select x.indx+1,ksppinm,ksppity,ksppstvl,ksppstdf, 
  decode(bitand(ksppiflg/256,1),1,'TRUE','FALSE'), 
  decode(bitand(ksppiflg/65536,3),1,'IMMEDIATE',2,'DEFERRED', 3,'IMMEDIATE','FALSE'),
  decode(bitand(ksppstvf,7),1,'MODIFIED',4,'SYSTEM_MOD','FALSE'), 
  decode(bitand(ksppstvf,2),2,'TRUE','FALSE'), 
  ksppdesc, 
  ksppstcmnt
  from x$ksppi x, x$ksppcv y 
  where (x.indx = y.indx); 
  
SQL> grant select on my_v$parameter_with_hidden to test;

C:\Documents and Settings\guogang>sqlplus test/test
SQL> create synonym v$parameter for sys.my_v$parameter_with_hidden ;
SQL> show parameter  _small_table_threshold
NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
_small_table_threshold               integer     798