The jBoss datasource is a service like any mBean.
You should create a xml file in your server/application/conf or server/application/deploy directory that configures the data source.
The file should containt something like:

  

     myDatasource

    jdbc:mysql://localhost:3306/sSMS

    org.gjt.mm.mysql.Driver

     admin

     admin

     5

     20

    0

  

The name of this file should be terminated with -ds.xml, for instance mydatabase-ds.xml

Please note that the paramenters connection-url and driver-class refered in this sample are to a mySQL
database. For Oracle, that parameters should be something like this:

jdbc:oracle:thin:@localhost:1521:MYDB oracle.jdbc.driver.OracleDriver

Do not forget to include Oracle thin driver jar file in the classpath of you server or in the server/application/lib directory.