SELECT s.sid,
      s.serial#,
      s.event,
      a.sql_text,
      a.sql_fulltext,
      s.username,
      s.status,
      s.machine,
      s.terminal,
      s.program,
      a.executions,
      s.sql_id,
      p.spid,
      a.direct_writes
 FROM (SELECT * FROM v$session WHERE status = ‘ACTIVE‘) s
 LEFT JOIN v$sqlarea a
   ON s.sql_id = a.sql_id
INNER JOIN v$process p
   ON s.paddr = p.addr;

SELECT OSUSER 电脑登录身份,
       PROGRAM 发起请求的程序,
       USERNAME 登录系统的用户名,
       SCHEMANAME,
       B.Cpu_Time 花费cpu的时间,
       STATUS,
       B.SQL_TEXT 执行的sql
FROM V$SESSION A
LEFT JOIN V$SQL B ON A.SQL_ADDRESS = B.ADDRESS
                   AND A.SQL_HASH_VALUE = B.HASH_VALUE
ORDER BY b.cpu_time DESC

SELECT b.sid oracleID,
       b.username 登录Oracle用户名,
       b.serial#,
       spid 操作系统ID,
       paddr,
       sql_text 正在执行的SQL,
       b.machine 计算机名
FROM v$process a, v$session b, v$sqlarea c
WHERE a.addr = b.paddr
   AND b.sql_hash_value = c.hash_value;

select b.username,b.sid,b.serial# serial,c.object_name,a.locked_mode,d.sql_text
  ,d.first_load_time,d.last_load_time
from v$locked_object a
  left join v$session b on a.session_id = b.sid
  left join dba_objects c on c.object_id = a.object_id
  left join v$sql d on b.sql_hash_value = d.hash_value
order by b.logon_time;

alter system kill session‘sid,serial#‘;

select spid, osuser, s.program from v$session s,v$process p where
s.paddr=p.addr and s.sid=33 (33就是上面的sid)

kill -9 spid

orakill 【实例名】 【spid】

例如
orakill orcl 12345