[ https://issues.jboss.org/browse/WFLY-9092?page=com.atlassian.jira.plugin.... ] Brad Maxwell commented on WFLY-9092: ------------------------------------ Prior to JBoss AS 7 / Wildfly it was possible, but never recommended: - It is not a good idea to have an unreliable client directly controlling the resources of your server (i.e. JDBC connections). - If the client loses network connectivity or crashes before it is able to close the connection then the connection will not be closed until the server is shutdown (i.e. it will be leaked). - It is very slow. All database operations are proxied through an MBean. - Transaction propagation is not supported. It recommend using an EJB as an intermediary in accessing the data source, and defining a proper contract for how the data should be accessed and operated on. -- This message was sent by Atlassian JIRA (v7.5.0#75005)