These attributes can be set using operation requests and they stored in the xml, but when the server is restarted the parsing fails, e.g.

15:12:34,517 ERROR [stderr] Caused by: org.jboss.jca.common.metadata.ParserException: IJ010061: Unexpected element: blocking-timeout-millis
15:12:34,517 ERROR [stderr] at org.jboss.jca.common.metadata.ds.DsParser.parseDataSource(DsParser.java:622)
15:12:34,517 ERROR [stderr] at org.jboss.jca.common.metadata.ds.DsParser.parseDataSources(DsParser.java:165)
15:12:34,518 ERROR [stderr] at org.jboss.jca.common.metadata.ds.DsParser.parse(DsParser.java:118)
15:12:34,518 ERROR [stderr] at org.jboss.as.connector.subsystems.datasources.DataSourcesExtension$NewDataSourceSubsystemParser.readElement(DataSourcesExtension.java:652)

15:14:11,814 ERROR [stderr] Caused by: org.jboss.jca.common.metadata.ParserException: IJ010061: Unexpected element: idle-timeout-minutes
15:14:11,815 ERROR [stderr] at org.jboss.jca.common.metadata.ds.DsParser.parseDataSource(DsParser.java:622)
15:14:11,815 ERROR [stderr] at org.jboss.jca.common.metadata.ds.DsParser.parseDataSources(DsParser.java:165)
15:14:11,815 ERROR [stderr] at org.jboss.jca.common.metadata.ds.DsParser.parse(DsParser.java:118)
15:14:11,815 ERROR [stderr] at org.jboss.as.connector.subsystems.datasources.DataSourcesExtension$NewDataSourceSubsystemParser.readElement(DataSourcesExtension.java:652)