Batch processing is a method of running a program or a series of programs in which one or more records (a batch) are processed with little or no action from the user or operator. A program that reads a large file and generates a report, for example, is considered to […]
z/OS initialization, or an Initial Program Load (IPL), is the act of loading a copy of the operating system from disk into the processor’s real storage and executing it. This process essentially consists of: – System and storage initialization, including the creation of system component address spaces – Master scheduler […]
The following are the three possible JES2 start methods: 1. WARM – This is the default start method. – WARM specifies that JES2 is to continue processing jobs from where they were stopped. – If the FORMAT option was also coded, then JES2 will ignore the WARM specification and perform […]
Work to be processed by a z/OS system has to be defined using Job Control Language (JCL). JCL is used to define which program to execute, which resources to allocate, whom to notify, and so forth. This description of work is called a job. z/OS uses a Job Entry Subsystem […]
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