Turn "Allow Asynchronous Request Dispatcher ON/Off"

Server -> Application Server -> Web Container Settings -> WebContainer -> Asynchronous Request Dispatching

wsadmin Script to do the needful:

allServers=AdminConfig.list('Server')
server_name_web=AdminConfig.list("WebContainer",allServers)
AdminConfig.showAttribute(server_name_web,'allowAsyncRequestDispatching')
AdminConfig.modify(server_name_web,'[[allowAsyncRequestDispatching false]]')
AdminConfig.save()
AdminConfig.showAttribute(server_name_web,'allowAsyncRequestDispatching')