Dear All,

I have problem with Enterprise Manager(EM). when i logon EM by SYS account it is showing me the following message:

Status : Agent Unreachable

when i click Administration or Maintenance tab it is again asking me to logon and showing me wrong connect string. I checked my listenere and Tnsnames at server and client side , they are perfectly alright. I can logon thru SQLPLUS.
This problem started when i changed my server name after Installing Oracle database.

Please any suggestion where can i find that connect string which EM is using.