Declare @ListaIgnorar varchar (4000)
Set @ListaIgnorar = 'master;model;tempdb;msdb;'

Declare DBCursor Cursor for
Select Name from Sysdatabases Where CharIndex(Name + ';', @ListaIgnorar) <= 0

Declare @NomeDB varchar (128) 
Declare @Statement varchar (8000)

Open DBCursor
Fetch Next from DBCursor Into @NomeDB
While @@FETCH_STATUS = 0
Begin
   
   Set @Statement = 'Alter Database [' + @NomeDB + ']  Set Auto_Close Off'
	Print @Statement
	Exec (@Statement)    

	Fetch Next from DBCursor Into @NomeDB
End
Close DBCursor
Deallocate DBCursor