ie. Ability to specify something like ... ebean.ora.connectionProperties=oracle.net.CONNECT_TIMEOUT=3000;oracle.jdbc.ReadTimeout=10000 in the properties file or programmatically via ServerConfig.
Right now you can't. If you look at DataSourceConfig it doesn't provide a place to put arbitrary connection properties. It is definitely something that you SHOULD be able to do though so I'll log it as an enhancement request and hopefully action it.
A workaround right now would be to use another external DataSource (but Ebean's own DataSource implementation is pretty darn good so we want to log this enhancement and sort it).