1、执行SQL语句，同时使用如下命令查找SQL ID
select a.SQL_ID,b.SQL_TEXT,b.LAST_LOAD_TIME,b.LAST_ACTIVE_TIME
  from v$session a, v$sql b
where a.SQL_ID = b.SQL_ID
   and a.USERNAME is not null
   and a.STATUS = 'ACTIVE' ; 

如：8nr2s7h0dd3tp

2、根据SQL ID创建性能分析任务
var tuning_task varchar2(100);
DECLARE
  l_sql_id v$session.prev_sql_id%TYPE;
  l_tuning_task VARCHAR2(30);
BEGIN
  l_sql_id:='8nr2s7h0dd3tp';
  l_tuning_task := dbms_sqltune.create_tuning_task(sql_id => l_sql_id);
  :tuning_task:=l_tuning_task;
  dbms_sqltune.execute_tuning_task(l_tuning_task);
  dbms_output.put_line(l_tuning_task);
END;
/

如：TASK_94701

3、查看任务分析结果
SET LONG 999999
set serveroutput on size 999999
SET LINESIZE 100
SELECT DBMS_SQLTUNE.REPORT_TUNING_TASK( 'TASK_94701') from DUAL;

4、使用SQL PROFILE绑定执行计划
execute dbms_sqltune.accept_sql_profile(task_name => 'TASK_94701',task_owner => 'SYS', replace => TRUE,force_match   => TRUE);
 

5、再次执行SQL语句查看是否已经达到优化目的。