Finally, I have edited the maintenance plan which resolved this case, here is what I did:
- Alter the maintenance plan "some maintenance plan"
- note down the databases name
- altered it and selected all the system databases
- saved the maintenance plan changes and exit
- re-open the maintenance plan
- re-selected those databases (from step 2)
- saved the maintenance plan changes and exit
- re-invoked the job
- and, the job completed successfully
And, the mystery persist, can you guys suggest me if I miss something to refer/research ?
-- Hemantgiri S. Goswami (http://www.sql-server-citation.com )