This post includes tips and recommendations for tuning and troubleshooting performance on WebSphere Application Server based products. IBM WebSphere Application Server (WAS) is a market-leading Application Server for running Java applications. It is the flagship product within IBM's WebSphere product line and it is the base runtime product for several IBM products. These products range from Mobile servers (IBM Worklight Server), Integration servers (WebSphere Enterprise Service Bus), Operational Decision Management servers (WebSphere ILOG JRules), to Business Process Management servers (IBM BPM Advanced), among many others. Because these products share the same runtime, the tuning tips and recommendations in this post apply to all of them.