Oracle 11G database EM port change

After install and configure the oracle 11 databases versions it will automatically takes 1158 port 

for managing 11 database via web admin console,  when you want to change this managing port

in order to prevent unauthorized access or improve of database security you can follow up below

Steps for implement this

·         Log in as database owner user usually we are using oracle

#su oracle

$stop the running EM console

$emctl stop dbconsole

·         Change port as your wish

$emca -reconfig ports -DBCONTROL_HTTP_PORT 1820

Output

STARTED EMCA at Apr 23, 2014 1:48:28 PM

EM Configuration Assistant, Version 11.2.0.0.2 Production

Copyright (c) 2003, 2005, Oracle.  All rights reserved.

Enter the following information:

Database SID: TEST

Password for SYS user:*******

Do you wish to continue? [yes(Y)/no(N)]:Y

·         Check out the status of the database and it will show the new URL with new port number

$emctl status dbconsole