[whpalmer4]

Syncing is the easiest way. After you've got it working for a day or two, if you've got the desktop application (I assume you probably do), you'll want to go to the Sync preferences on the desktop app and deregister the client corresponding to the iPhone app running on the iPad, unless you are going to continue running both of them.

If you can't do it by sync for some reason, you could use the debug URL that causes OmniFocus to mail your database to the support ninjas, changing the address to send it to yourself instead. Then, in the Apps section of iTunes, scroll to the bottom and click on OmniFocus, then add the copy of your database that was attached to the email.