046 Oracle执行慢的SQL

 -- 执行最慢的sql
 SELECT *
 FROM (SELECT sa.SQL_TEXT,
             sa.SQL_FULLTEXT,
             sa.EXECUTIONS as "exeCount",
             ROUND(sa.ELAPSED_TIME / 1000000, 2) as "execTimeTotal",
             ROUND(sa.ELAPSED_TIME / 1000000 / sa.EXECUTIONS, 2) as "execTimeAvg",
             sa.COMMAND_TYPE,
             sa.PARSING_USER_ID,
             u.username,
             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;