i installed pg 7.2 and i got the following:
<h2>OpenACS Installation: Error</h2>
Thank you for installing the Open Architecture Community System (OpenACS),
a suite of fully-integrated enterprise-class solutions
for collaborative commerce.
This is the OpenACS Installer which performs all the steps necessary
to get the OpenACS Community System running on your server.<p>
Please read the <a href="/doc/release-notes.html">Release Notes</a>
before proceeding to better understand what is contained in this release.
<p>The following database pools generated errors:
<ul><li>OpenACS could not allocate a handle from database pool "pool2".</ul><p>
Possible causes might include:<p>
<li>The database is not running.
<li>The database driver has not been correctly installed.
<li>The datasource or database user/password are incorrect.
<li>You didn't define any database pools.
<p><b>The first step involved in setting up your OpenACS
installation is to configure your RDBMS, correctly install a database driver,
and configure AOLserver to use it. You can download
and install the latest version of the AOLserver Oracle and PostgreSQL drivers
from the <a href='http://openacs.org/software.adp'>OpenACS.org Software Page</a>.
Once you're sure everything is installed and configured correctly, restart AOLserver.</b></p>