I found this in the DataSourceDeploymentMetaData at lines 337-351

I am thinking that the second properties setName() is using the wrong name. I don't think both properties are supposed to be using the same name, unless it is an either/or config property

 if(getStaleConnectionCheckerClassName() != null)
 {
 property = new ManagedConnectionFactoryPropertyMetaData();
 property.setName("StaleConnectionCheckerClassName");
 property.setValue(getStaleConnectionCheckerClassName());
 properties.add(property);
 }

 if(getURLSelectorStrategyClassName() != null)
 {
 property = new ManagedConnectionFactoryPropertyMetaData();
 property.setName("StaleConnectionCheckerClassName");
 property.setValue(getStaleConnectionCheckerClassName());
 properties.add(property);
 }