Enterprise Manager

I have installed 11g Grid control on Host oemserver01


During installation, these are the ports i have specified.

Enterprise manager upload port - 4890
Enterprise manager upload HTTP SSL port -1159
Enterprise Manager Central Console Http SSL Port - 7799
Node Manager Http SSL Port - 7401
Managed Server HTTP port -7201
Enterprise Manager Central Console Http Port -7788
Oracle Management Agent Port -1830
Admin Server Http SSL Port -7101
Managed Server Http SSL Port -7301


Status after installation:

$ emctl status oms -details
Oracle Enterprise Manager 11g Release 1 Grid Control
Copyright (c) 1996, 2010 Oracle Corporation. All rights reserved.
Enter Enterprise Manager Root (SYSMAN) Password :
Console Server Host : oemserver01
HTTP Console Port : 7788
HTTPS Console Port : 7799
HTTP Upload Port : 4890
HTTPS Upload Port : 1159
OMS is not configured with SLB or virtual hostname
Agent Upload is unlocked.
OMS Console is unlocked.
Active CA ID: 1



Now I want to monitor the DATABASE running on HOST dbhost01,dbhost02. What is the port i need to get opened on these DB SERVERS, which can talk to oms server.
I need to specify this during agent installation.


Also, we have existing 10g set up running. Can i use the smae PORT for agent for 11g as well ??