Java Connector return blank rows of xml

Suite and Optimus Suite 5
#1

I downloaded the 1.5 java connector.jar and am trying to get the basic GridConnector functionality to work. I created a servlet and used the following code snippet.

        conn = DatabaseConnection.getConnection();
        GridConnector c = new GridConnector(conn,DBType.Oracle);

        c.dynamic_loading(100);
        c.render_table("expprod_asset_group","asset_group","ag_name,active_ind");

When I hit the servlet directly through the browser (localhost:8080/grid), it returns the correct amount of rows in the table, but the contents of the fields are blank. I see the that the SQL it’s executing is correct. What am I doing incorrectly that the returned data is not being populated? Thanks

<?xml version="1.0" encoding="utf-8" ?>
#2

change the render_table command in above way

c.render_table("expprod_asset_group","ASSET_GROUP","AG_NAME,ACTIVE_ID");

for Oracle, names of DB fields need to be in the upper case