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REXX or CLIST

For each task, you can choose either REXX or CLIST to write your EXECs with.

CLIST is a language that is familiar to many system programmers, but REXX is the recommended language and is acclaimed for its simplicity and power.

The following performance considerations apply:

  • REXX EXECs perform approximately 25% faster than CLISTs.
  • CLIST performance can be improved by placing all comments on statements that do not include executable statements.

  • Using VLF can reduce both CPU and I/O consumption.

    See the IBM documentation TSO/E Customization Manual for information about how to use VLF.

For a complete discussion about writing TSO/E CLISTs, see the IBM documentation TSO Extensions: CLISTS. For a complete discussion about writing TSO REXX EXECs, see the IBM documentations TSO/E: REXX User’s Guide and TSO/E: REXX Reference.

Related topic

Introduction-to-BMC-AMI-Ops-Automation-EXECs




 

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