Changing Logical Record Length

IEBGENER is used to produce a reblocked output data set. The output data set can contain either fixed-length or variable-length records with a logical record length different from the input logical record length. Any unspecified fields will contain unpredictable data.

Practical Example -

Scenario - Create new PS with different length from input PS file.

Input PS File - MATEPK.IEBGENER.INPUTPS

----+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8
********************************* Top of Data **********************************
E0001    EMPLOYEE1           DIR                 LOC1      0000100000    
E0002    EMPLOYEE2           MGR       DEPT1     LOC1      0000080000    
E0003    EMPLOYEE3           MGR       DEPT2     LOC2      0000075000    
E0004    EMPLOYEE4           TL        DEPT1     LOC1      0000050000    
E0005    EMPLOYEE5           SSE       DEPT1     LOC1      0000045000    
E0006    EMPLOYEE6           SE        DEPT1     LOC1      0000034000    
E0007    EMPLOYEE7           SSE       DEPT2     LOC2      0000046000    
******************************** Bottom of Data ********************************

Code -

----+----1----+----2----+----3----+----4----+----5----+----6
//MATEPKP  JOB (123),'MTH',CLASS=A,MSGCLASS=A,MSGLEVEL=(1,1),
//             NOTIFY=&SYSUID
//***********************************************************
//* COPY INPUT PS DATA TO NEW PS FILE BY CHANGING LENGTH
//***********************************************************
//STEP10   EXEC PGM=IEBGENER
//SYSPRINT DD SYSOUT=*
//SYSUT1   DD DSN=MATEPK.IEBGENER.INPUTPS,DISP=SHR
//SYSUT2   DD DSN=MATEPK.IEBGENER.OUTPUT1,
//            DISP=(NEW,CATLG,DELETE),
//            SPACE=(TRK,(10,10),RLSE),
//            UNIT=3390,VOL=SER=DEVHD4,
//            DCB=(DSORG=PS,RECFM=FB,LRECL=70,BLKSIZE=700)
//SYSIN    DD  *
  GENERATE MAXFLDS=1
    RECORD FIELD=(70,1,,1)
/*

Output - MATEPK.IEBGENER.OUTPUT1

VIEW       MATEPK.IEBGENER.OUTPUT1                         Columns 00001 00070 
Command ===>                                                  Scroll ===> CSR  
=COLS> ----+----1----+----2----+----3----+----4----+----5----+----6----+----7  
****** ***************************** Top of Data ****************************
000001 E0001    EMPLOYEE1           DIR                 LOC1      0000100000
000002 E0002    EMPLOYEE2           MGR       DEPT1     LOC1      0000080000
000003 E0003    EMPLOYEE3           MGR       DEPT2     LOC2      0000075000
000004 E0004    EMPLOYEE4           TL        DEPT1     LOC1      0000050000
000005 E0005    EMPLOYEE5           SSE       DEPT1     LOC1      0000045000
000006 E0006    EMPLOYEE6           SE        DEPT1     LOC1      0000034000
000007 E0007    EMPLOYEE7           SSE       DEPT2     LOC2      0000046000
****** **************************** Bottom of Data **************************

Explaining Example -

SYSUT1 DD maps the input data set (MATEPK.IEBGENER.INPUTPS).
SYSUT2 DD specifies the output file MATEPK.IEBGENER.OUTPUT1 with record length 70.
SYSIN DD specifies the control data set as DUMMY to identify no control statements are used.