From: Bobby Bissett <bobby.bissett_at_oracle.com>
Date: Thu, 6 Oct 2011 09:36:31 -0400

On Sep 30, 2011, at 6:18 PM, forums_at_java.net wrote:

> I am getting a javax.security.auth.login.LoginException when running a web
> app in Glassfish 3.1.1 using j_security, jsf 2 and facelets. I have noticed
> similar issues in other forums such as JavaRanch and stackoverflow.com.
> Then I came upon Jira Glassfish 16189. This issue seems to be identical to
> mine but it was closed because it was a configuration issue. Does anyone
> know what the configuration issue was?

Here's the full info:
http://java.net/jira/browse/GLASSFISH-16189

Is your login exception also "Unable to connect to datasource..."?

Cheers,
Bobby