Learn TSO-ISPF-SCRIPTING with Real Code Examples

Minimize loops that access large PDS datasets repeatedly

Use indexed VSAM datasets where possible

Avoid excessive synchronous I/O in scripts

Batch repetitive jobs instead of running interactively

Optimize panel screen layouts for speed and simplicity

Restrict dataset access via RACF/ACF2/Top Secret

Validate user input in ISPF panels

Avoid embedding sensitive credentials in scripts

Audit batch jobs and script execution logs

Follow mainframe change control policies

Check TSO session logs

Monitor batch job spool outputs

Audit dataset modifications

Track script execution performance

Use mainframe job control utilities for analytics

Comment REXX and CLIST scripts

Use modular and reusable routines

Validate input and output datasets

Organize ISPF panels logically

Follow mainframe coding standards