OEM Problem

Changed SYS and SYSTEM passwords for security reasons and by mistake changed passwords for SYSMAN and DBSNMP accounts as well. Had problem connecting to OEM after that, so changed passwords back to original but still OEM does not show correct status for database instance, listener and agent connection to database. All three are shown as down. Also on top shows error The database target is currently unavailable.

You cannot just change the SYSMAN password from SQL*Plus, You need to do this (as per Metalink):

To reset the SYSMAN password -
1. Stop all Oracle Management Servers (OMS) currently connected to the EM Repository.
2. From one of the OMS systems, use SQLPLUS to connect to the EM Repository Database. The connection attempt must be made using the EM Repository schema user's account.
3. Execute the SQL script: %Oracle_home%\sysman\admin\vduresetsysman.sql
4. Restart each OMS.
5. Launch the EM Console. Logon as sysman with a password of oem_temp and change the password when prompted. Make sure the sysman and oem_temp are all lower case.
:rolleyes:

Thanks

No prob, glad to help! :D