【ORACLE】Mystat脚本获得ORACLE统计结果

mystat.sql和mystat2.sql可以根据v$mystat视图中的信息得出执行各个语句的各项统计结果

mystat.sql只是获得统计结果的开始值:

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用于报告差值:

set echo off
set verify off
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

例如要查看某个update产生的redo数,可以使用以下命令:

SQL> @mystat.sql "redo size"
SQL> set echo off

NAME                                 VALUE
---------------------------------------------------------------- ----------
redo size                             4272908
redo size for lost write detection          0
redo size for direct writes              8228

SQL> update tobj set created=sysdate;

14921 rows updated.

SQL> commit;

Commit complete.

SQL> @mystat2
SQL> set echo off

NAME                                     V              DIFF
-------------------------------------- ---------- ----------------
redo size                                 8548796        8,540,568
redo size for lost write detection              0           -8,228
redo size for direct writes                 16456            8,228