http://www.zabbix.com/documentation/2.0/manual/appendix/install/db_scripts

On that page, instructions are as follow:

1. copy directory create/images/old_images somewhere on Oracle server (e.g. /home/oracle):
   shell> scp -r create/images/old_images user@host:/home/oracle
2. edit file database/oracle/images.sql and set images_dir variable to where you have copied them (e. g. "/home/oracle/old_images"):
   CREATE OR REPLACE DIRECTORY image_dir AS '/home/oracle/old_images'

However, the images in the source are contained in misc/images.