I Changed the listener port on one of the servers by editing the listener.ora file. I changed the tnsnames.ora file on the server and the clients. everyone can connect, however oem is showing the listener down and it shows the old port number. I edited the emoms.properties file putting in the new port number, I looked in the emd.properties file, but can't find any references to a port number. I retarted OEM. Can some one point me in the right direction as to what I am missing, please? Thank you.