How to connect to a load balanced database (Exa Datasource config error)

Hi,

I am working in a telco company.We are developing reports for CRM system.But when we deploy this developed reports in to production we encountered an error.

Error was encountered when I configure Prod database in my jasper server.

Could any one can help to resolve this issue.

Database is a load balanced oracle exa database rack.

I can not add screen shot

this is jasper server

this is my tipical connect url

jdbc:oracle:thin:@(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = machine1ip)(PORT = 1521))(ADDRESS = (PROTOCOL = TCP)(HOST = machine2ip)(PORT = 1521))(LOAD_BALANCE = yes)(CONNECT_DATA = (SERVER = DEDICATED)(SERVICE_NAME = service_destination)))