Upgrade to ejabberd 16.03
Ejabberd upgrade process
If you are using an sql backend for authentication, you must upgrade your schema before starting ejabberd 16.03. This can be safely done while a previous version of ejabberd is actually running.
SQL database upgrade
Example for MySQL:
mysql -h host -u user database -p << EOF ALTER TABLE users ADD COLUMN serverkey text NOT NULL DEFAULT ''; ALTER TABLE users ADD COLUMN salt text NOT NULL DEFAULT ''; ALTER TABLE users ADD COLUMN iterationcount integer NOT NULL DEFAULT 0; EOF