I've deployed a JDBC compliant driver for Oracle by copying the jar (ojdbc6.jar) to /standalone/deployments and indeed, upon server startup I can read:
16:16:17,878 INFO [org.jboss.as.connector.subsystems.datasources] (ServerService Thread Pool -- 27) JBAS010403: Deploying JDBC-compliant driver class org.h2.Driver (version 1.3)
16:16:20,201 INFO [org.jboss.as.server] (DeploymentScanner-threads - 2) JBAS018559: Deployed "ojdbc6.jar"
Problem is when I am logging to the management console, in the "Datasources" area (http://0.0.0.0:9990/console/App.html#ds-metrics) I can't see any button to allow me to define and add a new Datasource.
I attach my screenshot.
You should go to the Profile tab (next to Runtime) -> Upper Right Side.