[webERP-users] how to prevent access during upgrade

[Dale S. <dal...@sh...>]

How do you prevent user access when you require sole access to the webERP app or the database server for some reason. E.g. upgrade, patch, restore database backup, etc. 

Is there any built-in facility for dealing with "temporarily out of order, please come back later." Can anyone share a procedure that works for them? Is anyone bringing up a new server, synchronizing databases, and cutting over live? Not that I want to, but I'd like to know in case I need to some day. 

Cheers! 
Dale