Problem Upgrading V 3 to Version 4
News and General
In attempting to upgrade from version 3 to version 4 I misread the documentation and began copying over the system/user directory which destroyed the underlying config.php file. I have a backup of the V 2 config.php file but not V 3. My site now generates a
Exception Caught You must define the following database parameters: database DBConfig.php:157
when I try to access the site or the control panel. Any suggestions?
What changes would I need to make to the v2 config.php file for it to work with v4?
First guess is that something is wrong with your database credentials. Have you made sure that database name, user/pass, dbdriver etc. are correct and there are no typos? Also if that’s all good, try changing hostname from ‘localhost’ to 127.0.0.1.
I would contact your host to request a copy of your backups, and to make sure you perform the v3 to v4 upgrade with your site’s configuration intact. If for some reason that’s not possible, you can perform a fresh installation of v3 (on a separate database) in this environment, and use that config as the basis of your v4 upgrade. Failing that, you can contact support and we can help you setup a config file based on your old v2 config file.