You can annotate databases for which you have Database Manager permissions. For example, you can use database notes to broadcast messages about database status or update deadlines to spreadsheet users. Database notes are accessible from the login dialog box in Spreadsheet Add-in.
To annotate databases:
From Enterprise View or a custom view, select a database.
Right-click, and select Set, and then Database note.
In the Set Database Note dialog box, in Database Note, enter a note.
Click OK.
alter database (MaxL) in the Oracle Essbase Technical Reference