I am considering a few issues here. Mainly, for a udb db2 connection, you specify the database instance owner/user, and a password. i.e. : <local-tx-datasource> <jndi-name>datasource_name</jndi-name> <connection-url>jdbc:db2://server:port/database</connection-url> <driver-class>com.ibm.db2.jcc.DB2Driver</driver-class> <user-name>username</user-name> password ................ But for a mainframe db2 connection, a user authenticates to a db and schema with an individual logon and password from a racf (or similar authentication) backend. So in that case, I am wondering how to pass on a unique logon and password to the already defined datasource. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4125337#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...