Apologies if this is a bit of an obvious question:
I run a script across a found set to change the status flag of each record (The job can now be invoiced). This found set is itself defined by a status flag (The job can now be delivered). My concern is that while this invoice script is running, another user could be changing the delivered status and the script could miss a record.
Is there a way to temporarily lock the whole database to everyone except one user - so that the script can be run without any other users modifying any data?