Allocate Datasets ^{(for Experienced)}

Summary

Syntax
Example1 - Create a PS File
Example2 - Create a PDS File

For basic information, go through the IEFBR14 Utility (for Beginners)

IEFBR14 is used to create/allocate empty datasets. The dataset can be either a Sequential file (PS) or Partitioned Dataset (PDS).
ISPF foreground option 3.2 (Data Set Utility panel) is also used to create the datasets. However, the IEFBR14 utility is mostly used to create the datasets as part of a batch run.
The disposition (DISP) to catalog the dataset is DISP=(NEW,CATLG,DELETE).

Syntax -

//Job-Card
//*
//STEP1    EXEC PGM=IEFBR14
//SYSPRINT DD SYSOUT=*     
//SYSOUT   DD SYSOUT=*
//SYSDUMP  DD SYSOUT=*
//DD1      DD DSN=datset.name, DISP=(NEW,CATLG,DELETE),…

DISP=(NEW,CATLG,DELETE) - Specifies to create a new dataset.

Example1 -

Scenario - Create a PS file using the IEFBR14 utility.

JCL -

----+----1----+----2----+----3----+---4----+---5---+----6---+---7--
//MATEPKI  JOB (123),'MTH',CLASS=A,MSGCLASS=A,MSGLEVEL=(1,1),           
//             NOTIFY=&SYSUID                                           
//************************************************************          
//* ALLOCATE PS DATA SET USING IEFBR14 UTILITY                          
//************************************************************          
//STEP01   EXEC PGM=IEFBR14                                             
//DD1      DD DSN=MATEPK.IEFBR14.PSFILE,                                
//            DISP=(NEW,CATLG,DELETE),                                  
//            SPACE=(TRK,(3,2),RLSE),                                   
//            UNIT=SYSDA,VOLUME=SER=DEVHD4,                             
//            DCB=(DSORG=PS,RECFM=FB,LRECL=80,BLKSIZE=800)              
**************************** Bottom of Data ****************************

Output -

Go to Spool (SDSF -> ST) and verify the status in the JESYSMSG DDname of the corresponding job.

********************************* TOP OF DATA **********************************
ICH70001I MATEPK   LAST ACCESS AT 11:12:09 ON SATURDAY, AUGUST 20, 2022         
IEF236I ALLOC. FOR MATEPKI STEP10                                               
IGD100I 0ABB ALLOCATED TO DDNAME DD1      DATACLAS (        )                   
IEF142I MATEPKI STEP01 - STEP WAS EXECUTED - COND CODE 0000                     
IEF285I   MATEPK.IEFBR14.PSFILE                        CATALOGED                
IEF285I   VOL SER NOS= DEVHD4.                                                  
IEF373I STEP/STEP01  /START 2022232.1112                                        
IEF032I STEP/STEP01  /STOP  2022232.1112                                        
        CPU:     0 HR  00 MIN  00.01 SEC    SRB:     0 HR  00 MIN  00.00 SEC    
        VIRT:     4K  SYS:   228K  EXT:        0K  SYS:    13476K               
IEF375I  JOB/MATEPKI /START 2022232.1112                                        
IEF033I  JOB/MATEPKI /STOP  2022232.1112                                        
        CPU:     0 HR  00 MIN  00.01 SEC    SRB:     0 HR  00 MIN  00.00 SEC    
******************************** BOTTOM OF DATA ********************************

Explaining Example -

DD1 DD - This DD statement specifies PS dataset attributes for creation.
IEF142I MATEPKI STEP01 - STEP WAS EXECUTED - COND CODE 0000 - Specifies the STEP01 completed successfully.
MATEPK.IEFBR14.PSFILE CATALOGED - Specifies the MATEPK.IEFBR14.PSFILE file successfully created and cataloged.

Example2 -

Scenario - Create a PDS using the IEFBR14 utility.