Utilities

Utilities are simple programs or pre-written programs which perform commonly needed functions

Utilities are widely used by system programmers and application developers to achieve day-to-day requirements, organizing and maintaining data.

There are two types of utility they are dataset utilities and system utilities

Dataset utilities:

• Used to perform the task on the dataset

• Name start with IEB

• IEBCOPY, IEBEDIT, IEBCOMPR, IEBGENER are the few dataset utilities

System utilities:

• Used to perform the task on system Maintenace

• Name starts with IEH

• IEHMOVE, IEHLIST, IEHPROGM are the few System utilities

Common JCL DD names:

• SYSUT1: Input file

• SYSUT2: Output file

• SYSUT3: Work file for input (SYSUT1)

• SYSUT4: Work file for output (SYSUT2)

• SYSIN: Used to pass parameters for the utility

• SYSOUT: Output file for message from utility

• SYSPRINT: Output file printed output from utility

• SYSUDUMP: It's an output file for a system dump if program fails