Using a JNDI DataSource doesn't work anymore

Hello,

I'm on Debian/Tomcat and use the .WAR to connect on my postgreSQL database with JNDI.
With this database connector I hadn't problem with 6.1,6.2 and 6.3 but with 6.4 upgrade I have have an fatal error 500

It is clearly a problem with JNDI on 6.4 version because if I use my hibernate.xml with postgreSQL database parameters, XWiki working well.

(In comment my conf)

Thxs

Pascal B