Learning Undo&Redo

比较两个语句产生的Redo

mystat.sql

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) like '%' || lower('&S')||'%'
/
set echo on

 

mystat2.sql

set echo off
set verify off
column diff format a18
select a.name, b.value V, to_char(b.value-&V,'999,999,999,999') diff
from v$statname a, v$mystat b
where a.statistic# = b.statistic#
and lower(a.name) like '%' || lower('&S')||'%'
/
set echo on

 

@mystat "redo size"

...

@mystat2