What is the relationship between JES and the system users? Is there really any difference between JES2 and JES3? What are some of JES2's key functions? An initial consideration when installing MVS is whether to select the JES2 or the JES3 component.

In modern times, there are two distinct implementations of the Job Entry System called JES2 and JES3. They are designed to provide efficient execution of batch jobs.

JES2 is a functional extension of the HASP II program that receives jobs into the system and processes all output data produced by the job. JES2 is the component of MVS that provides the necessary functions to get jobs into, and output out of, the MVS system.

JES2 processes its initialization statements and commands in a way that allows most initialization statements to be changed by operator command. The following is a partial list of the control that JES2 commands have over JES2 processing.

JES2 Job Output Commands..... 58 Controlling Output Groups and Job Output Elements..... 60 Controlling a Network..... 61 Controlling the NJE Environment..... 63 Specifying Node Characteristics..... 64 Modifying Transmission Delays and Excessive Looping Through a Network. 64 Modifying Sign-on ...

An overview of JES2 functions, device control, network job entry (NJE), remote job entry (RJE), initialization, operations, customization techniques, and diagnostic tools.

JES2 is to allow logging (on the system log) of any initialization parameter statements which follow a LOG statement. JES2 is not to honor the LOG initialization parameter statement. All default (underlined) options are taken. Before stopping the system, you should stop all JES2 processing by entering the $P command.

2005年3月4日 · If you are in a multiprocessor environment, each processor?s JES2 Subsystem independently controls the job inputs, scheduling and output datasets. In JES2, allocation of datasets required by a step are done only just before the step executes.

This article provides information on JES2 in an MLS system configuration. Restrictions and configuration information is provided.

To check for the current resource usage details. It gives informoation on the resources like BERT, JOES, JQES. To check the history for all resources for the past couple of hrs. $JD HISTORY (resource name) for specific resource. General resource shortage resources and to resolve them.