OEM Console page not bale open

Issue :
started OEM but not able to open in IE  getting error

I tried https://proddb.xxxxxxxxx.ae:5501/em

getting Error :'The webpage cannot be found'



1.emctl stop dbconsole
Oracle Enterprise Manager 11g Database Control Release 11.1.0.7.0
Copyright (c) 1996, 2008 Oracle Corporation.  All rights reserved.
https://proddb.reyamigroup.ae:5501/em/console/aboutApplication
Stopping Oracle Enterprise Manager 11g Database Control ...
all attemps to stop oc4j failed... now trying to kill 9
--- Failed to shutdown DBConsole Gracefully ---
 failed.


Solution:

1. emctl stop dbsoncole
2.kill agent related proceses

3.emctl start dbconsole