Hai If u are using Mysql,copy mysql-ds.xml (location is [jboss-location]/ docs/examples/jca/..) xml file into [jboss-location]/server/default/deploy/ and change ip,port,url,driver.. <local-tx-datasource> <jndi-name>MySqlDS</jndi-name> <connection-url>jdbc:mysql://127.0.0.1:3306/test</connection-url> <driver-class>com.mysql.jdbc.Driver</driver-class> <user-name>root</user-name> <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter</exception-sorter-class-name> <!-- sql to call when connection is created <new-connection-sql>some arbitrary sql</new-connection-sql> --> <!-- sql to call on an existing pooled connection when it is obtained from pool <check-valid-connection-sql>some arbitrary sql</check-valid-connection-sql> --> <!-- corresponding type-mapping in the standardjbosscmp-jdbc.xml (optional) --> <type-mapping>mySQL</type-mapping> </local-tx-datasource> Use this MySqlDS as jndi name(ex:java:/MySqlDS View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4041771#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...