[Users] make an Ajax request between Geoext and Oracle

[François Boussuges]

Hello, I try to load data from my databases Oracle in my application.

I have an WFS layers with a grid panel.
I have other data on Oracle and I want to display this in a other grid 
panel , I want to link this data with my ID_object (ID_OBJECT=ID_DATA). 
When i clicked on a features, I start my Ajax request and I get the data 
in a popup or other panel.

I think the Ajax request is the better solution but I never try this.

What do I do to make an Ajax request beetwen my application and my 
databases?

Thank You

François