Debugging XWiki

[Dandre]

Hello Vincent and everyone at XWiki!
I am going through the code but I need to view how XWiki is generating 
SQL queries that are sent to the JDBC driver in order to see if it's 
XWiki that has a problem or Hibernate or the JDBC driver. Yes, I am 
working with Fabian and them to try and figure out why Postgres gives a 
problem when porting from an old DB.
Could you guys maybe give me instructions of how to turn on debug mode.

Thanks alot.

Regards,
Dandre