如何在Oracle10g中启动和关闭OEM

emctl start dbconsole

[oracle@danaly ~]$ emctl start dbconsole
TZ set to PRC
Oracle Enterprise Manager 10g Database Control Release 10.2.0.1.0  
Copyright (c) 1996, 2005 Oracle Corporation.  All rights reserved.
http://danaly.hurrray.com.cn:1158/em/console/aboutApplication
Starting Oracle Enterprise Manager 10g Database Control .......................... started. 
------------------------------------------------------------------
Logs are generated in directory /opt/oracle/product/10.2.0/danaly.hurrray.com.cn_danaly/sysman/log 

emctl stop dbconsole

[oracle@danaly ~]$ emctl stop dbconsole
TZ set to PRC
Oracle Enterprise Manager 10g Database Control Release 10.2.0.1.0  
Copyright (c) 1996, 2005 Oracle Corporation.  All rights reserved.
http://danaly.hurrray.com.cn:1158/em/console/aboutApplication
Stopping Oracle Enterprise Manager 10g Database Control ......  Stopped. 

[oracle@danaly ~]$ emctl
TZ set to PRC
Oracle Enterprise Manager 10g Database Control Release 10.2.0.1.0  
Copyright (c) 1996, 2005 Oracle Corporation.  All rights reserved.
Invalid arguments

Unknown command option 
Usage:: 
   Oracle Enterprise Manager 10g Database Control commands:
       emctl start| stop| status| setpasswd dbconsole
       emctl secure 

       emctl set ssl test|off|on em
       emctl set ldap     
emctl blackout options can be listed by typing "emctl blackout"
emctl config options can be listed by typing "emctl config"
emctl secure options can be listed by typing "emctl secure"
emctl ilint  options can be listed by typing "emctl ilint"
emctl deploy  options can be listed by typing "emctl deploy"