Introduction

Introduction

IKJEFT01 is an IBM mainframe utility commonly used to execute TSO commands in a batch job. This utility allows users to perform TSO functions without being logged into a TSO session, which can be useful for automating tasks. The same utility is used to run the TSO/E commands is called Terminal Monitor Program (TMP). The terminal monitor program may be one of the following - IKJEFT01, IKJEFT1A, or IKJEFT1B. IKJEFT1A and IKJEFT1B are not utilities and are alternates (aliases) to IKJEFT01.

Submitting a batch job with the utility IKJEFT01 can execute the TSO commands. The EXEC format is -

//stepname EXEC PGM=IKJEFT01,DYNAMNBR=nn,PARM='command'

Syntax -

//Job-card
//*
//STEP01   EXEC PGM=IKJEFT01
//SYSPRINT DD  SYSOUT=*
//SYSTSPRT DD  SYSOUT=*
//SYSUDUMP DD  SYSOUT=*
//SYSTSIN  DD  *
  <Operands>
/*
  • SYSPRINT - Specifies where all utility related messages are written.
  • SYSTSPRT - Defines where the output of the commands will go.
  • SYSUDUMP - Specifies the output dataset where the dump is placed in case of an ABEND. Data set can be used instead of an SYSOUT.
  • SYSTSIN – Contains the TSO commands or points to a dataset with the commands.

Functions -

IKJEFT01 performs the below functions –

  • Submit TSO commands.
  • BIND COBOL + DB2 program.
  • Runs COBOL + DB2 program.
  • Unload DB2 table.

Return Codes -

Here’s an overview of common return codes for IKJEFT01 -

  • 0: Successful execution - All commands or programs processed by IKJEFT01 ran without any issues.
  • 4: Warning - The command or program executed, but there were minor issues.
  • 8: Error - There was a significant issue that likely affected the execution of the command or program.
  • 12: Severe error - Specifies a major failure that prevented the command or program from executing correctly.
  • 16: Terminal error - This is the most severe error and specifies that a severe failure occurred.