Enterprise Manager "Performance" tab is suddenly disabled.
I've been logging onto Enterprise manager using the same credentials for months with
no problem. Today I logged in and I suddenly can't access the performance tab
on EM. I usually logon as sys as sysdba.
I DID change some DB init. parameters, increasing the number of processes and cursor resources but that's it.
Why is my "Performance" tab disabled now ?
How can I get it back ?