Product Documentation
Abstract
A collection of product documentation, white papers, announcement letters, data sheets, and other resources for Enterprise COBOL for z/OS.
Note: Choose the appropriate COBOL product version from the following table. If the COBOL version is no longer supported, you can still download the PDF format documentation or view other resources.
Content
| Product documentation | ||||||||||||||||||||||||||||||||||||||||
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The HTML-based online product documentation for IBM Enterprise COBOL for z/OS 6.5 is viewable in IBM Documentation. Last updated: June 13 2025 | ||||||||||||||||||||||||||||||||||||||||
PDF format - English
* It is our intention to update the product documentation for this release periodically, without updating the edition suffix of the publication number. If you need to uniquely refer to the version of your product documentation, refer to the publication number with the date of update. | ||||||||||||||||||||||||||||||||||||||||
PDF format - Japanese
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| COBOL upgrade portal |
|---|
The COBOL upgrade portal is a centralized place of all the Enterprise COBOL for z/OS upgrade-related information, including case studies, COBOL expert interview videos, IBM COBOL Upgrade Advisor for z/OS (CUAZ) interactive demo, COBOL Migration and Performance Tuning Webinars, Ask an Expert for contacting COBOL experts, FAQs, other IBM products to support your migration, and many other resources. The COBOL upgrade portal can help ease your migration efforts from COBOL 4 or earlier to COBOL 6. Last updated: 9 May 2025 |
| Announcement letter |
|---|
This announcement letter announces IBM Enterprise COBOL for z/OS 6.5. Last updated: 8 April 2025 |
| Software product compatibility reports |
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Software product compatibility reports home page Understand the complete set of compatibility requirements for an IBM Product (software, hardware, operating systems, hypervisors, containers). Last updated: 8 April 2025 |
| Product documentation | ||||||||||||||||||||||||||||||||||||||||||||
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The HTML-based online product documentation for IBM Enterprise COBOL for z/OS 6.4 is viewable in IBM Documentation. Last updated: November 7 2025 | ||||||||||||||||||||||||||||||||||||||||||||
PDF format - English
* It is our intention to update the product documentation for this release periodically, without updating the edition suffix of the publication number. If you need to uniquely refer to the version of your product documentation, refer to the publication number with the date of update. | ||||||||||||||||||||||||||||||||||||||||||||
PDF format - Japanese
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| COBOL upgrade portal |
|---|
The COBOL upgrade portal is a centralized place of all the Enterprise COBOL for z/OS upgrade-related information, including case studies, COBOL expert interview videos, IBM COBOL Upgrade Advisor for z/OS (CUAZ) interactive demo, COBOL Migration and Performance Tuning Webinars, Ask an Expert for contacting COBOL experts, FAQs, other IBM products to support your migration, and many other resources. The COBOL upgrade portal can help ease your migration efforts from COBOL 4 or earlier to COBOL 6. Last updated: 9 May 2025 |
| Announcement letter |
|---|
This announcement letter announces IBM Enterprise COBOL for z/OS 6.4. Last updated: 5 April 2022 |
This announcement letter announces IBM Enterprise COBOL Value Unit Edition for z/OS 6.4. Last updated: 5 April 2022 |
| Data sheet |
|---|
This data sheet provides a comprehensive, easy-to-read reference written from a client benefit perspective that outlines functionality, advantages, and capabilities of IBM Enterprise COBOL for z/OS 6.4. Last updated: August 30 2024 |
| Product documentation | ||||||||||||||||||||||||||||||||||||||||||||||||
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The HTML-based online product documentation for IBM Enterprise COBOL for z/OS 6.3 is viewable in IBM Documentation. Last updated: 29 Nov 2024 | ||||||||||||||||||||||||||||||||||||||||||||||||
PDF format - English
* It is our intention to update the product documentation for this release periodically, without updating the edition suffix of the publication number. If you need to uniquely refer to the version of your product documentation, refer to the publication number with the date of update. | ||||||||||||||||||||||||||||||||||||||||||||||||
PDF format - Japanese
| ||||||||||||||||||||||||||||||||||||||||||||||||
| COBOL upgrade portal |
|---|
The COBOL upgrade portal is a centralized place of all the Enterprise COBOL for z/OS upgrade-related information, including case studies, COBOL expert interview videos, IBM COBOL Upgrade Advisor for z/OS (CUAZ) interactive demo, COBOL Migration and Performance Tuning Webinars, Ask an Expert for contacting COBOL experts, FAQs, other IBM products to support your migration, and many other resources. The COBOL upgrade portal can help ease your migration efforts from COBOL 4 or earlier to COBOL 6. Last updated: 9 May 2025 |
| Announcement letter |
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This announcement letter announces IBM Enterprise COBOL for z/OS 6.3. Last updated: 6 September 2019 |
| Data sheet |
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This data sheet provides a comprehensive, easy-to-read reference written from a client benefit perspective that outlines functionality, advantages, and capabilities of IBM Enterprise COBOL for z/OS 6.3. Last updated: 31 May 2024 |
| Withdrawal announcement |
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Withdrawal announcement for IBM Enterprise COBOL for z/OS 6.2. Last updated: 1 August 2023 |
| Product documentation | ||||||||||||||||||||||||||||||||||||||||||||||||
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| PDF format - English | ||||||||||||||||||||||||||||||||||||||||||||||||
* It is our intention to update the product documentation for this release periodically, without updating the edition suffix of the publication number. If you need to uniquely refer to the version of your product documentation, refer to the publication number with the date of update. | ||||||||||||||||||||||||||||||||||||||||||||||||
PDF format - Japanese
| ||||||||||||||||||||||||||||||||||||||||||||||||
| COBOL upgrade portal |
|---|
The COBOL upgrade portal is a centralized place of all the Enterprise COBOL for z/OS upgrade-related information, including case studies, COBOL expert interview videos, IBM COBOL Upgrade Advisor for z/OS (CUAZ) interactive demo, COBOL Migration and Performance Tuning Webinars, Ask an Expert for contacting COBOL experts, FAQs, other IBM products to support your migration, and many other resources. The COBOL upgrade portal can help ease your migration efforts from COBOL 4 or earlier to COBOL 6. Last updated: 9 May 2025 |
| Announcement letter |
|---|
This announcement letter announces IBM Enterprise COBOL for z/OS 6.2. Last updated: 17 July 2017 This announcement letter announces the continuous delivery (CD) model for IBM Enterprise COBOL for z/OS 6.2. Last updated: 15 August 2018 |
| Data sheet |
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This data sheet provides a comprehensive, easy-to-read reference written from a client benefit perspective that outlines functionality, advantages and capabilities of IBM Enterprise COBOL for z/OS 6.2. Last updated: 31 October 2022 |
| Withdrawal announcement |
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Withdrawal announcement for IBM Enterprise COBOL for z/OS 6.1. Last updated: 3 August 2021 |
| Product documentation | ||||||||||||||||||||||||||||||||||||||||
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| PDF format - English | ||||||||||||||||||||||||||||||||||||||||
* It is our intention to update the product documentation for this release periodically, without updating the edition suffix of the publication number. If you need to uniquely refer to the version of your product documentation, refer to the publication number with the date of update. | ||||||||||||||||||||||||||||||||||||||||
PDF format - Japanese
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| White paper |
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This paper identifies key performance benefits and tuning considerations when using IBM Enterprise COBOL for z/OS 6.1. Last updated: 03 December 2017 |
| COBOL upgrade portal |
|---|
The COBOL upgrade portal is a centralized place of all the Enterprise COBOL for z/OS upgrade-related information, including case studies, COBOL expert interview videos, IBM COBOL Upgrade Advisor for z/OS (CUAZ) interactive demo, COBOL Migration and Performance Tuning Webinars, Ask an Expert for contacting COBOL experts, FAQs, other IBM products to support your migration, and many other resources. The COBOL upgrade portal can help ease your migration efforts from COBOL 4 or earlier to COBOL 6. Last updated: 9 May 2025 |
| Announcement letter |
|---|
This announcement letter announces IBM Enterprise COBOL for z/OS 6.1. Last updated: 16 February 2016 |
| Data sheet |
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This data sheet provides a comprehensive, easy-to-read reference written from a client benefit perspective that outlines functionality, advantages, and capabilities of IBM Enterprise COBOL for z/OS 6.1. Last updated: 31 August 2021 |
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| Withdrawal announcement |
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Withdrawal announcement for IBM Enterprise COBOL for z/OS 5.2. Last updated: 12 March 2019 |
| Announcement letter |
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IBM Enterprise COBOL for z/OS 5.2 delivers support for the latest z13 processor architecture This announcement letter announces IBM Enterprise COBOL for z/OS 5.2. Last updated: 14 January 2015 |
| Data sheet |
|---|
This data sheet provides a comprehensive, easy-to-read reference written from a client benefit perspective that outlines functionality, advantages and capabilities of IBM Enterprise COBOL for z/OS 5.2. Last updated: 14 January 2015 |
| Product documentation | |||||||||||||||||||||
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PDF format - English
* It is our intention to update the product documentation for this release periodically, without updating the edition suffix of the publication number. If you need to uniquely refer to the version of your product documentation, refer to the publication number with the date of update. | |||||||||||||||||||||
PDF format - Japanese
|
| Withdrawal announcement |
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Withdrawal announcement for IBM Enterprise COBOL for z/OS 5.1. Last updated: 12 March 2019 |
| Announcement letter |
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This announcement letter announces IBM Enterprise COBOL for z/OS 5.1. Last updated: 23 April 2013 |
| Data sheet |
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This data sheet provides a comprehensive, easy-to-read reference written from a client benefit perspective that outlines functionality, advantages and capabilities of Enterprise COBOL for z/OS 5.1.1. Last updated: 21 March 2014 |
| Product documentation | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PDF format - English
* It is our intention to update the product documentation for this release periodically, without updating the edition suffix of the publication number. If you need to uniquely refer to the version of your product documentation, refer to the publication number with the date of update. | |||||||||||||||||||||
PDF format - Japanese
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| White paper |
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This paper identifies key performance benefits and tuning considerations when using IBM Enterprise COBOL for z/OS 5.1. Last updated: 03 July 2014 |
| Product documentation | ||||||||||||||||||||||||||||||||||||||||||||
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PDF format - English
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PDF format - Japanese
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| White paper |
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This paper identifies key performance benefits and tuning considerations when using IBM Enterprise COBOL for z/OS 4.2. |
| Withdrawal announcement |
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Withdrawal announcement for IBM Enterprise COBOL for z/OS 4.2. Last updated: 5 May 2020 |
| Announcement letter |
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This announcement letter announces IBM Enterprise COBOL for z/OS 4.2. |
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| Withdrawal announcement |
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Software withdrawal and support discontinuance: IBM System z selected products Withdrawal announcement for IBM Enterprise COBOL for z/OS 4.1. |
| Announcement letter |
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IBM Enterprise COBOL for z/OS 4.1 helps improve application developer productivity This announcement letter announces IBM Enterprise COBOL for z/OS 4.1. |
| Product documentation | ||||||||||||||||||||||||||||||||||||||||
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Documentation for Enterprise COBOL for z/OS 4.1 can be downloaded and installed on a Windows-based workstation or web server for local viewing. Last updated: 17 June 2016 | ||||||||||||||||||||||||||||||||||||||||
PDF format - English
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PDF format - Japanese
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| Withdrawal announcement |
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Software withdrawal: Selected IBM System z products -- Some replacements available Withdrawal announcement for IBM Enterprise COBOL for z/OS 3.4. |
| Announcement letter |
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This announcement letter announces IBM Enterprise COBOL for z/OS 3.4. |
| Product documentation | ||||||||||||||||||||||||||||||||||||||||||||
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Documentation for Enterprise COBOL for z/OS 3.4 can be downloaded and installed on a Windows-based workstation or web server for local viewing. Last updated: 09 June 2017 | ||||||||||||||||||||||||||||||||||||||||||||
PDF format - English
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PDF format - Japanese
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| Withdrawal announcement |
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Withdrawal announcement for IBM Enterprise COBOL for z/OS 3.3. |
zSeries and S/390 products — Some replacements available
| Announcement letter |
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This announcement letter announces IBM Enterprise COBOL for z/OS 3.3. |
| Product documentation | ||||||||||||||||||||||||||||||||
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PDF format - English
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PDF format - Japanese
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| Withdrawal announcement |
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Withdrawal announcement for IBM Enterprise COBOL for z/OS 3.2. |
| Announcement letter |
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IBM Enterprise COBOL for z/OS and OS/390 3.2 Integrates COBOL Business and Web-Oriented Processes This announcement letter announces IBM Enterprise COBOL for z/OS 3.2. |
| Product documentation | ||||||||||||||||||||||||||||||||||||||||
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PDF format - English
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PDF format - Japanese
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| Withdrawal announcement |
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Software Service Discontinuance: Selected IBM S/390 Products Withdrawal announcement for IBM Enterprise COBOL for z/OS 3.1. |
| Announcement letter |
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IBM Enterprise COBOL for z/OS and OS/390 3.1 — Integrate COBOL Business and Web-Oriented Processes This announcement letter announces IBM Enterprise COBOL for z/OS 3.1. |
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PDF format - English
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PDF format - Japanese
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Modified date:
10 November 2025
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