-- 在完成某些操作之前和之后的变化情况

set echo off
set verify off
column value new_val V
define S="&1"
set autotrace off
select a.name,b.value from v$statname a,v$mystat b where a.statistic# = b.statistic# and lower(a.name)  = lower('&S')
/
set echo off
