how to create sql profile

DECLARE
 my_task_name VARCHAR2(30);
 my_sqltext CLOB;
 Begin
 my_sqltext := 'select * from emp where empno=66';
 My_Task_Name := Dbms_Sqltune.Create_Tuning_Task(
 Sql_Text=> My_Sqltext,
 user_name => 'SCOTT',
 scope => 'COMPREHENSIVE',
Time_Limit => 60,
 task_name => 'sql_tuning_task_11',
 Description => 'Task to tune a query on a specified table');
 END;

  Exec Dbms_Sqltune.Execute_Tuning_Task( Task_Name => 'my_sql_tuning_task_11');
  SELECT DBMS_SQLTUNE.REPORT_TUNING_TASK( 'my_sql_tuning_task_11') from DUAL;



check sql profile 

select * from dba_Sql_Profiles


delete  sql profile

EXEC DBMS_SQLTUNE.DROP_SQL_PROFILE('NAME');