oracle查询正在执行的sql语句

SELECT b.sid oracleID,  
       b.username 用户名,  
       b.serial
       paddr,  
       sql_text 正在执行的SQL,  
       b.machine 计算机名称
FROM v$process a, v$session b, v$sqlarea c  
WHERE a.addr = b.paddr  
   AND b.sql_hash_value = c.hash_value

SELECT l.session_id sid,  
       s.serial
       l.locked_mode 锁模式,  
       l.oracle_username 登录用户,  
       l.os_user_name 机器用户名,  
       s.machine 机器名,  
       s.terminal 终端用户名,  
       o.object_name 被锁对象名,  
       s.logon_time 登录数据库时间  
FROM v$locked_object l, all_objects o, v$session s  
WHERE l.object_id = o.object_id  
   AND l.session_id = s.sid  
ORDER BY sid, s.serial#;

alter system kill session 'sid,serial#'