title: Keycloak 'ExampleDS' in production
body: <p>I'm following the guide to set up Keycloak 3.0.0 in HA mode for production with an Oracle DB. I see in the <code>standalone-ha.xml</code> file there's a subsystem:</p>
  
  <pre><code>&lt;subsystem xmlns="urn:jboss:domain:ee:4.0"&gt;
  </code></pre>
  
  <p>At the bottom of that subsystem section there's a <code>&lt;default-bindings&gt;</code> element that refers to an <code>ExampleDS</code> datasource:</p>
  
  <pre><code>&lt;default-bindings context-service="java:jboss/ee/concurrency/context/default" datasource="java:jboss/datasources/ExampleDS" managed-executor-service="java:jboss/ee/concurrency/executor/default" managed-scheduled-executor-service="java:jboss/ee/concurrency/scheduler/default" managed-thread-factory="java:jboss/ee/concurrency/factory/default"/&gt;
  </code></pre>
  
  <p><code>ExampleDS</code> is declared to use the h2 driver, which we cannot use in production. </p>
  
  <p>Can I change that <code>&lt;default-bindings&gt;</code> element to refer to my Oracle <code>KeycloakDS</code> datasource? </p>