Issue

• server.log entry similar to

ERROR [org.jboss.as.server] (Controller Boot Thread) JBAS015956: Caught exception during boot: org.jboss.as.controller.persistence.ConfigurationPersistenceException: JBAS014676: Failed to parse configuration
    at org.jboss.as.controller.persistence.XmlConfigurationPersister.load(XmlConfigurationPersister.java:141) [jboss-as-controller-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
    at org.jboss.as.server.ServerService.boot(ServerService.java:321) [jboss-as-server-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
    at org.jboss.as.controller.AbstractControllerService$1.run(AbstractControllerService.java:254) [jboss-as-controller-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
    at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_75]
Caused by: javax.xml.stream.XMLStreamException: javax.xml.stream.XMLStreamException: ParseError at [row,col]:[145,8]
Message: JBAS014788: Unexpected attribute 'statistics-enabled' encountered
    at org.jboss.as.connector.subsystems.datasources.DataSourcesExtension$DataSourceSubsystemParser.readElement(DataSourcesExtension.java:588)
    at org.jboss.as.connector.subsystems.datasources.DataSourcesExtension$DataSourceSubsystemParser.readElement(DataSourcesExtension.java:185)
    at org.jboss.staxmapper.XMLMapperImpl.processNested(XMLMapperImpl.java:110) [staxmapper-1.1.0.Final-redhat-2.jar:1.1.0.Final-redhat-2]
    at org.jboss.staxmapper.XMLExtendedStreamReaderImpl.handleAny(XMLExtendedStreamReaderImpl.java:69) [staxmapper-1.1.0.Final-redhat-2.jar:1.1.0.Final-redhat-2]
    at org.jboss.as.server.parsing.StandaloneXml.parseServerProfile(StandaloneXml.java:1035) [jboss-as-server-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
    at org.jboss.as.server.parsing.StandaloneXml.readServerElement_1_4(StandaloneXml.java:469) [jboss-as-server-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
    at org.jboss.as.server.parsing.StandaloneXml.readElement(StandaloneXml.java:145) [jboss-as-server-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
    at org.jboss.as.server.parsing.StandaloneXml.readElement(StandaloneXml.java:107) [jboss-as-server-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
    at ....