hi Cristian From jonas mailng list i came to know that you were facing the same problem which i am facing while connecting to mysql (in your case oracle) with jonas EJBserver in my jonas-ejb-jar.xml i change jdbc_1 to mysql and the same in my mysql.properties, I made apporpriate changes in to the jonas.properties i.e jonas.datasource mysql.properties But while running the server i get the errror Cannot create ConnectionManager for null JOnAS: Cannot start DataBase Manager java.lang.NullPointerException at java.util.Hashtable.put(Hashtable.java, Compiled Code) at org.objectweb.jonas.dbm.ConnectionManager.setDataSourceName(ConnectionManager.java:548) at org.objectweb.jonas.dbm.DataBaseManager.createConnectionManager(DataBaseManager.java:114) at org.objectweb.jonas.dbm.DataBaseManager.createConnectionManagers(DataBaseManager.java:145) at org.objectweb.jonas.server.Server.main(Server.java:100) If wou got the solution for the above ,can you help me Thanks in advance Ritesh ----------------------------------------------------------------------------- This list is cross-posted to two mail lists. To unsubscribe, follow the instructions below for the list you subscribed to. For objectweb.org: send email to [EMAIL PROTECTED] and include in the body of the message "unsubscribe dbtm-group". For enhydra.org: send email to [EMAIL PROTECTED] and include in the body of the message "unsubscribe ejb-container-group".