oracle查看执行最慢与查询次数最多的sql语句

select*

 from(selectsa.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

     fromv$sqlarea sa

     leftjoinall_users u

      onsa.PARSING_USER_ID = u.user_id

     wheresa.EXECUTIONS > 0

     orderby(sa.ELAPSED_TIME / sa.EXECUTIONS)desc)

 whererownum <= 50;

select*

 from(selects.SQL_TEXT,

        s.EXECUTIONS"执行次数",

        s.PARSING_USER_ID"用户名",

        rank() over(orderbyEXECUTIONSdesc) EXEC_RANK

     fromv$sql s

     leftjoinall_users u

      onu.USER_ID = s.PARSING_USER_ID) t

 whereexec_rank <= 100;