Online documentation is no longer available

Online documentation for IBM Enterprise COBOL for z/OS (COBOL) 4.2 is no longer available because COBOL 4.2 is withdrawn from service on 30 April 2022. For more information, read this blog.

However, you can find the PDF version documentation in the Enterprise COBOL for z/OS documentation library. Click the "4.2" tab in the table.

If you are still on COBOL 4.2, you are encouraged to plan and start your migration to COBOL 6 as soon as possible. Visit the COBOL Migration Portal to check all the Enterprise COBOL for z/OS migration-related information.


For documentation about current available releases of Enterprise COBOL for z/OS, see the Enterprise COBOL for z/OS Documentation.

For lifecycle information about Enterprise COBOL for z/OS, see the COBOL Lifecycle page.

The IBM Publications Center also provides publications for many older versions of IBM products that are not present in IBM Documentation. These files are available for you to view or download. In a number of countries, you can also order publications on the site. The IBM Publications Center offers customized search functions to help you find publications.