oracle sql 调优

Select * From Table(dbms_xplan.display_cursor(sql_id => '9s7pt2ay4t3jg'));

Declare

  l_Result_Name Varchar2(30);

  l_Task_Name   Varchar2(36) := 'Task_Name_9s7pt2ay4t3jg_1';

  l_Sqlid       Varchar2(36) := '9s7pt2ay4t3jg';

Begin

  l_Result_Name := Dbms_Sqltune.Create_Tuning_Task(Sql_Id      => l_Sqlid,

                                                   Scope       => 'COMPREHENSIVE',

                                                   Time_Limit  => 60,

                                                   Task_Name   => l_Task_Name,

                                                   Description => 'Task to tune a query on a specified table');

  Dbms_Sqltune.Set_Tuning_Task_Parameter(Task_Name => l_Task_Name,

                                         Parameter => 'TIME_LIMIT',

                                         Value     => 30);

  Dbms_Sqltune.Execute_Tuning_Task(Task_Name => l_Task_Name); 

End;

Select Dbms_Sqltune.Report_Tuning_Task('Task_Name_4hqjc3gc4dwuy') From Dual;

Select Dbms_Sqltune.Report_Tuning_Task('Task_Name_5k5fc0v3hkmcr') From Dual;

Select Dbms_Sqltune.Report_Tuning_Task('Task_Name_au085h9cz2av0') From Dual;

Select Dbms_Sqltune.Report_Tuning_Task('Task_Name_cwkna4v8r99qu') From Dual;

Select Dbms_Sqltune.Report_Tuning_Task('Task_Name_9s7pt2ay4t3jg_1') From Dual;

Select * From dba_sql_profiles;

Select * From wh_inventory y Where y.isshort ='Y'