Oracle: SQL*Net roundtrips to/from client

SQL> select
  2     mys.value
  3  from
  4     v$mystat   mys   join
  5     v$statname nam on mys.statistic# = nam.statistic#
  6  where
  7     nam.name = 'SQL*Net roundtrips to/from client';
 
     VALUE
----------
        11
 
SQL> /
 
     VALUE
----------
        13
 
SQL> /
 
     VALUE
----------
        15
 
SQL> /
 
     VALUE
----------
        17