What is DCB parameter in JCL?

DCB. The Data Control Block (DCB) parameter details the physical characteristics of a dataset. This parameter is required for datasets that are newly created in the job step. LRECL is the length of each record held within the dataset. RECFM is the record format of the dataset.

What is Iebedit utility in JCL?

You can use IEBEDIT to create a data set containing a selection of jobs or job steps. These jobs or job steps can be entered into the job stream at a later time for processing. You can edit and selectively copy an input job stream to an output data set by using IEBEDIT.

Why do you want to specify the region parameter in a JCL step?

REGION parameter is used to specify the size of the central or virtual storage required to execute the step. Region parameter is an optional parameter. REGION parameter can be coded at JOB level and Step level. If the REGION parameter coded at both JOB and Step level, JOB card overrides the Step level parameter.

How do you reference the last generation in JCL?

If we want to use a GDG which is already created by some job, then how to use the reference of the last generation in a JCL? To refer the latest generation of a GDG, we use the reference as (+0). In order to execute step2 a job after a return code of 8 in step1, what condition you will code in step2?

What is DD * in JCL?

Reusable JCL collection. Data definition (DD) statements define the data sets that a program or procedure uses when it runs. You must code one DD statement for each data set that is used or created within a job step. The order of DD statements within a job step is not usually significant.

What is block size in JCL?

Block size (BLKSIZE) specifies the maximum length, in bytes, of a physical block of storage in MVS. If BLKSIZE(0) is specified, the system will determine the optimal block size based on the maximum record length (LRECL) and the physical characteristics of the disk, or approximately half of a physical track.

What is Cond even in JCL?

COND=EVEN. When COND=EVEN is coded, the current job step is executed, even if any of the previous steps abnormally terminate. If any other RC condition is coded along with COND=EVEN, then the job step executes if none of the RC condition is true.

Why do we need Joblib in JCL?

A JOBLIB statement is used in order to identify the location of the program to be executed in a JCL. The JOBLIB statement is specified after the JOB statement and before the EXEC statement. This can be used only for the in stream procedures and programs.

What is PARM parameter in JCL?

PARM parameter is an optional keyword parameter in JCL. PARM parameter is a way to pass a data from JCL to the program but the maximum amount of data which we can send to the program using the PARM Parameter is 100 character. Syntax: PARM=DATA.

What is disp mod in JCL?

DISP = MOD is used to either extend an existing sequential dataset or to create a dataset if it does not exist. If the dataset exists, the records are appended to the dataset at the end of the existing dataset.

What is S322 Abend in JCL?

S322 error in Mainframe JCL is the Time Abend, If the task is not finished before the limit of CPU time is reached, then that task is canceled and the System action, S322 abend (abnormal end) is raised. and the system abnormally ends the job. To resolve this issue give TIME = MAXIMUM in job card.

What is the maximum limit of GDG?

Extended format for generation data groups (GDGs): Extended format GDGs can contain up to 999 generation data sets (GDSes). The previous GDS limit was 255 GDSes per GDG. New GDGs can be defined with this new extended format.