是否有隐藏的表,系统变量或某些东西在给定时刻显示活动连接?
答案 0 :(得分:168)
使用V$SESSION
视图。
V$SESSION
显示每个当前会话的会话信息。
答案 1 :(得分:99)
如需更完整的答案,请参阅: http://dbaforums.org/oracle/index.php?showtopic=16834
select
substr(a.spid,1,9) pid,
substr(b.sid,1,5) sid,
substr(b.serial#,1,5) ser#,
substr(b.machine,1,6) box,
substr(b.username,1,10) username,
-- b.server,
substr(b.osuser,1,8) os_user,
substr(b.program,1,30) program
from v$session b, v$process a
where
b.paddr = a.addr
and type='USER'
order by spid;
答案 2 :(得分:26)
当我想查看从应用程序服务器到数据库的传入连接时,我使用以下命令:
SELECT username FROM v$session
WHERE username IS NOT NULL
ORDER BY username ASC;
简单但有效。
答案 3 :(得分:5)
select
username,
osuser,
terminal,
utl_inaddr.get_host_address(terminal) IP_ADDRESS
from
v$session
where
username is not null
order by
username,
osuser;
答案 4 :(得分:4)
Select count(1) From V$session
where status='ACTIVE'
/
答案 5 :(得分:4)
select status, count(1) as connectionCount from V$SESSION group by status;
答案 6 :(得分:4)
以下列出了按连接数排序的操作系统用户列表,这在查找过多的资源使用情况时非常有用。
select osuser, count(*) as active_conn_count
from v$session
group by osuser
order by active_conn_count desc
答案 7 :(得分:4)
select s.sid as "Sid", s.serial# as "Serial#", nvl(s.username, ' ') as "Username", s.machine as "Machine", s.schemaname as "Schema name", s.logon_time as "Login time", s.program as "Program", s.osuser as "Os user", s.status as "Status", nvl(s.process, ' ') as "OS Process id"
from v$session s
where nvl(s.username, 'a') not like 'a' and status like 'ACTIVE'
order by 1,2
此查询尝试过滤掉所有后台进程。
答案 8 :(得分:1)
select
count(1) "NO. Of DB Users",
to_char(sysdate,'DD-MON-YYYY:HH24:MI:SS') sys_time
from
v$session
where
username is NOT NULL;