padams edited this page Apr 2, 2015 · 1 revision

Server Operating System

OWA should run fine under both UNIX and most Windows operating systems. However, more extensive testing has been done on UNIX operating systems.


OWA requires PHP 5.2.x or later.

Required php.ini Directives

Certain PHP configuration settings create problems for OWA installations. The following is a list of INI settings that should be avoided:

  • safe mode directive must be set to "off'.

Required PHP Extensions

The PCNTL extension is required only if you plan to utilize OWA's background processing daemon (optional). Since PCNTL comes with the PHP distribution you just have to compile your PHP with the --enable-pcntl directive. See for more info on how to install the PCNTL extension. The appropriate database extensions (mysql, mysqli, etc.) are required so that PHP can access the OWA database.


OWA requires MySQL 4.1 or later. At this time, OWA requires that MySQL's "strict mode" be disabled.

Web Browsers

OWA supports all major versions of most web browsers including Opera, Safari, Firefox, Chrome and Internet Explorer. Certain OWA visualizations require Firefox 3.5 or later.


OWA's WordPress plugin requires WordPress version 2.8 or later.


OWA's MediaWiki plugin requires MediaWiki v1.15.x or later.

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