oracle 实时查询最耗CPU资源的SQL语句

 

1. 先通过top命令查看产用资源较多的spid号

 

2.查询当前耗时的会话ID，用户名，sqlID等：

select sid,serial#,machine,username,program,sql_hash_value,sql_id,

       to_char(logon_time,'yyyy/mm/dd hh24:mi:ss') as login_time from v$session

where paddr in (select addr from v$process where spid in ('5648612','256523'));

3. 如果上一步sql_id或者 hash_value不为空，则可用v$sqlarea查出当前正在使用的sql

select sql_text

  from v$sqltext_with_newlines

  where hash_value = &hash_value

order by piece;

select * from v$sql where sql_id=''

 

 

SELECT sql_text

  FROM v$sqltext a

WHERE (a.hash_value, a.address) IN

       (SELECT DECODE(sql_hash_value, 0, prev_hash_value, sql_hash_value),

               DECODE(sql_hash_value, 0, prev_sql_addr, sql_address)

          FROM v$session b

         WHERE b.paddr = (SELECT addr FROM v$process c WHERE c.spid = '&pid'))

ORDER BY piece ASC