1. A method for executing a job loaded into a client machine on a server machine that is different in a computer environment from the client machine, said method comprising the steps of: allowing the client machine to issue to the server machine a job execution request for executing the job, the job execution request being accompanied by environment information and job execution statements for the job to be executed, the environment information including a volume logical path and a volume physical path; and allowing the server machine to control to assign a server side volume corresponding to a client side volume and transfer input data on the client side volume to the server side volume, to convert the environment information and the job execution statements so as to replace the information about the volume logical path and the volume physical path by the corresponding information for the server machine, and to execute the job.