"rhq.ear/rhq-core-domain-ejb3.jar#rhqpu" resource unavailable in JBoss ON

Issue

• ERRORs in server.log:

  ...
  ERROR [org.jboss.as.controller.management-operation] (HttpManagementService-threads - 717) JBAS014612: Operation ("read-resource") failed - address: ([
      {"deployment" => "rhq.ear"},
      {"subdeployment" => "rhq-core-domain-ejb3.jar"},
      {"subsystem" => "jpa"},
      {"hibernate-persistence-unit" => "rhq.ear/rhq-core-domain-ejb3.jar#rhqpu"}
  ]): java.lang.StringIndexOutOfBoundsException: String index out of range: 0
      at java.lang.String.charAt(String.java:658) [rt.jar:1.7.0_17]
      at org.jboss.as.controller.PathElement.<init>(PathElement.java:103) [jboss-as-controller-7.2.1.F
  ...
  

• rhq.ear/rhq-core-domain-ejb3.jar#rhqpu resource unavailable