oracle - Change format of 'timing show' or 'set timing on' in sqlplus (to increase precision) -

I found this setting useful:

  set timing on;   
 Or such coding technique:  
  Start the time; Choose ...; Stop time;   
 But this product uses a few digits for the second partial part:  
  Ð ?? Ð ° N ?? Ñ ​​?? Ð ° N ?? Ð²Ñ ?? ÐμÐ¼Ñ ??: 00: 00:? 00.02   
 is possible to adjust the  time Sql  output format for * plus  
 I like for time stamps To add more points for the partial part, you want:  
  change session set NLS_TIMESTAMP_FORMAT = 'MI: SS.FF6';  PS  I use  
  select LAST_LOAD_TIME, ELAPSED_TIME, module, SQL_TEXT v $ sql order by LAST_LOAD_TIME by elasped desc   
 For high precision time (microsecond), but this is particularly uncomfortable for PL / SQL.   
  "itemprop =" text "> 
 I do not think this is possible.  
 DBMS_UTILITY.GET_TIME also gives you information in each other's 100th.  
 
 GET_TIME Function  
 This function determines the current time of each other at the 100th time. (...)   
 Source:  
 (Oracle Database Pl / SQL Package and Type Reference)