OpenX official’s site says that it supports both Postgres as well as Mysql databases. But when i tried to install the OpenX, it only gave Mysql as the database option. Google’ing didn’t help much..
Banging head made me check the phpinfo() to check if my local php supports postgres. Luckily it was bang on.. It was not supporting Postgresql.
Downloaded the latest installer for Mac OS X from here. Had to uncomment php module in the httpd.conf file located at /etc/apache2/httpd.conf so that php could be installed..