A profile in the SAP system is an operating system file containing parameters and configuration information of an instance. Since a SAP system might contain from one to several instances, many profiles may also exist. Individual setup parameters can be customized to the requirements of each instance The profiles are an essential part of technical and basis settings of the system, and the values they contain play the most important role when tuning the system. The profiles are used when starting and stopping the system since they are in charge of allocating or deallocating the necessary resources as specified in the profile parameters These individual parameters let you customize the following: The runtime environment of the instance (resources such as main memory size, shared memory, roll size) Which services are available for the instance (which work processes and how many) Where other services are located (database host, message server, etc.) The profile files are located under ...