Database Control Shows - Java.Lang.Exception: No Such Metric after login

Applies to:

Enterprise Manager for RDBMS - Version: 10.2.0.1.0
This problem can occur on any platform.

Symptoms

ERROR
java.lang.Exception: no such metric

is displayed when logging into database control

emoms.log file shows the error -

ORA-28000: the account is locked (DBD ERROR: OCISessionBegin)

Also HOST CPU shows no data

Cause

This is due to the dbsnmp account being locked.

Solution

To implement the solution, please execute the following steps:

1. Unlock dbsnmp account.
2. Restart dbconsole


Taken directly from metalink Note:333490.1