I am using WSAD5.1.2. I have to create a DSN yo connect to MySQL.I am able to connect using a direct JDBC connection by supplying the userid and password in the url.However when i try accessing it through a DSN i get a java.net.connection refused error.I have mentioned the userid and password in the security tab under JAAS and have selected both container and componenet managed authentication. I am connecting to the database from my DAO.My ejb calls the service class which is a POJO and my POJO calls the DAO.I am creating the connection in the DAO.Where should i specify my resource reference (in the ejbjar.xml?) in order to create a logical mapping for my database since my ejb is not interacting with the database directly instead my DAO is doing it. Any help and pointers will be highly appreciated.