[Oracle] oracle查看执行最慢与查询次数最多的sql语句

select *
 from (select sa.SQL_TEXT,
    sa.SQL_FULLTEXT,
    sa.EXECUTIONS "执行次数",
    round(sa.ELAPSED_TIME / 1000000, 2) "总执行时间",
    round(sa.ELAPSED_TIME / 1000000 / sa.EXECUTIONS, 2) "平均执行时间",
    sa.COMMAND_TYPE,
    sa.PARSING_USER_ID "用户ID",
    u.username "用户名",
    sa.HASH_VALUE
   from v$sqlarea sa
   left join all_users u
    on sa.PARSING_USER_ID = u.user_id
   where sa.EXECUTIONS > 0
   order by (sa.ELAPSED_TIME / sa.EXECUTIONS) desc)
 where rownum <= 50;

select *
 from (select s.SQL_TEXT,
    s.EXECUTIONS "执行次数",
    s.PARSING_USER_ID "用户名",
    rank() over(order by EXECUTIONS desc) EXEC_RANK
   from v$sql s
   left join all_users u
    on u.USER_ID = s.PARSING_USER_ID) t
 where exec_rank <= 100;