Guys, I resolved this error.
In a Brazilian JUG e-mail list (RSJUG) one participant named Julio told me that I should start Spring`s context together my application and not instantiate in every backbean`s method an ApplicationContext object. It was my error, creating always a new instance of my pool, etc�
Searching in Google I found how make it and now all it is working fine
In faces-config.xml I defined that the backbean receive a facade.
Set how resolves this EL expression
In faces-config.xml too:
In login backbean have an attribute named userFacade, getters and setters to this and none instantiate code of ApplicationContext object, Spring inject it to me.
Thanks for all answers.