try to remove spaces from URL. For Oracle RAC you can use syntax like jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS_LIST=(LOAD_BALANCE=ON)(ADDRESS=(PROTOCOL=TCP)(HOST=db1-vip)(PORT=1521))(ADDRESS=(PROTOCOL=TCP)(HOST=db2-vip)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=billsrv.mydomain.int)))