- 在sys模式下创建一个表,用于记录客户端登录数据库服务器的详细信息
create table logon_logs (logon_time date,
username varchar2(30),
machine varchar2(64),
ipadr varchar2(30),
program varchar2(64),
module varchar2(64),
terminal varchar2(64)
)
2.在sys模式下创建一个触发器:
create or replace trigger logusersconnects
after logon on database
begin
insert into logon_logs values(sysdate,
user,sys_context('USERENV','HOST'),
sys_context('USERENV','IP_ADDRESS'),
sys_context('USERENV','ACTION'),
sys_context('USERENV','MODULE'),
sys_context('USERENV','TERMINAL'));
commit;
end;
/
- 一些查看session数的实例(以sys用户登录)
–查看login_history表
select * from logon_logs;
–查看当前的所有session数
select count(*) from v$session;
–查看当前的客户端计算机名为RHEL的所有session数
select count(*) from v$session where machine = 'RHEL';
–查看当前的各个客户端计算机的连接数
select count(*) , machine from v$session group by machine;