分类: 信息化
2017-05-13 15:02:53
[20141119]使用脚本完成sql_profile工作.txt
--工作需要经常使用sql profile来优化sql语句,由于记不住命令,我基本都在toad下使用,这样非常简单。
--database => optiomize => oracle tuning advisor(OEM)来使用。
--有必要建立sql语句执行调用来使用sql profile来完成优化工作,简化sql优化工作。
1.建立任务:
set verify off
set long 20000000
set longchunksize 20000000
column report_tuning_task format a100
declare
a varchar2(200);
begin
a := dbms_sqltune.create_tuning_task(task_name=>'tuning
&1',description=>'tuning
sql_id=&1',scope=>dbms_sqltune.scope_comprehensive,time_limit=>1800,sql_id=>'&1');
dbms_sqltune.execute_tuning_task( a );
end;
/
prompt
=================================================================================================================================================
prompt tuning sql_id=&1 : report
prompt
=================================================================================================================================================
select dbms_sqltune.report_tuning_task('tuning &1') report_tuning_task FROM dual;
prompt
=================================================================================================================================================
prompt if finished,drop tuning task , run:
prompt execute dbms_sqltune.drop_tuning_task('tuning &1')
prompt if accept sql profile, run:
prompt
execute dbms_sqltune.accept_sql_profile(task_name => 'tuning
&1', replace => TRUE ,name=>'tuning &1');;
prompt
execute dbms_sqltune.accept_sql_profile(task_name => 'tuning &1',
replace => TRUE, name=>'tuning &1', FORCE_MATCH=>True)
prompt if drop or alter sql profile ,run :
prompt execute dbms_sqltune.drop_sql_profile(name => 'tuning &1')
prompt execute dbms_sqltune.alter_sql_profile(name => 'tuning &1',attribute_name=>'STATUS',value=>'DISABLED')
prompt
=================================================================================================================================================
set serveroutput off
2.如果接受sql profile:
execute dbms_sqltune.accept_sql_profile(task_name => 'tuning &1', replace => TRUE,);
--如果sql语句含有文字变量,想使这些语句也有效,可以执行如下:
execute dbms_sqltune.accept_sql_profile(task_name => 'tuning &1', replace => TRUE, FORCE_MATCH=>True);
--如果不满意可以:
execute dbms_sqltune.drop_sql_profile(name => 'tuning &1')
execute dbms_sqltune.alter_sql_profile(name => 'tuning &1',attribute_name=>'STATUS',value=>'DISABLED')