Thanks for the hint on maintenance plan creation.

The issue is now resolved.

When I click Maintenance plan history, it does not show anything, but when job history is also included, the message as following is almost the same as before. Since full...

Sorry, Job was run on SQL Server 2008, not 2005 as indicated earlier. Message from Job History is as following:

Executed as user: SCCGOV\sqlagent. Microsoft (R) SQL Server Execute Package Utility...

Can you please show me how to run the standard Disk Usage by Tables report ?

Many Thanks