The page contains links to articles and coding samples used predominantly, but not exclusively between 2003 and the present time. The predominant operating systems were z/OS 1.3. through to z/OS 2.5, using Enterprise COBOL 4.2 up to and including 6.4.

Where CICS/TS has been part of the equation it was typically CICS/TS 3.1 up to the current version in use which is CICS 6.1.

Programming in COBOL started in 1970 after buying a copy of "COBOL Programming" by John Watters. Not my best purchase as it was an ICL COBOL book rather than IBM but it was a start.

COBOL Topics - Batch

Calculate the sum of a numerical sequence
Dynamic Allocation of I/P using SETENV.
Dynamic Allocation of O/P File using SETENV.
Dynamic Allocation using BPXWDYN.
Dynamic Allocation using ENVAR.
Harness program to control batch programs and avoid step overhead
Load a KSDS cluster
Load a RRDS cluster
Passing a variable number of parameters
Print PDS / PDSE Members
Processing a PDS / PDSE Directory
Processing a varying number of input files
Reference Modification
Unload a PDS / PDSE text library
Updating variables passed from REXX
Using MODESET to get Supervisor State.
Using PARMDD on the JCL EXEC Statement
Why AMODE31 and not AMODE32

COBOL Topics - CICS/TS

Browse a DB2 Table
Design document for a Sample Application for Education
Dynamic File Allocation using CREATE FILE
Examples of EXCI Use
Frequently Asked Questions Application
Overview of the 3270 Bridge Facility
Using DOCTEMPLATE both Create and Insert
WEB-aware programming example