Mainframe, MVS and zOS Discussion

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Listen up, mate, check out this brilliant article — it's packed with mind-blowing design and totally worth your time!

Last post by Wazzdoopabuth « Tue Mar 17, 2026 8:44 pm

by Wazzdoopabuth » Tue Mar 17, 2026 8:44 pm » in General » Other Mainframe Topics, Off-Topics, FAQs.

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Last post by Wazzdoopabuth
Tue Mar 17, 2026 8:44 pm
spammers, I give up

Last post by enrico-sorichetti « Sun Mar 15, 2026 5:19 pm

by enrico-sorichetti » Sun Mar 15, 2026 5:19 pm » in General » Other Mainframe Topics, Off-Topics, FAQs.

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Last post by enrico-sorichetti
Sun Mar 15, 2026 5:19 pm
IDCAMS - HowTo force an Abend if MAXCC GT 0

Last post by enrico-sorichetti « Wed Mar 11, 2026 6:36 pm
Replies: 2
by jschreier » Sun Feb 15, 2026 3:05 pm » in Batch and Online » JCL - Job Control Language.

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Last post by enrico-sorichetti
Wed Mar 11, 2026 6:36 pm
REXX EXECIO vs LINEIN — when is EXECIO faster?

Last post by enrico-sorichetti « Tue Jan 27, 2026 12:59 pm
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by Anushka Sharma » Sun Sep 28, 2025 7:20 pm » in Languages » TSO, ISPF & REXX (Do you still do CLIST?!).

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Last post by enrico-sorichetti
Tue Jan 27, 2026 12:59 pm
Happy Republic Day India!

Last post by Anuj Dhawan « Tue Jan 27, 2026 12:52 pm
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by Anjali Chopra » Mon Jan 26, 2026 11:57 am » in General » Other Mainframe Topics, Off-Topics, FAQs.

Rating: 3.8%

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Last post by Anuj Dhawan
Tue Jan 27, 2026 12:52 pm
Variable‑length records in VSAM KSDS

Last post by Aditi Patwal « Wed Jan 21, 2026 1:20 pm
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by Aditi Patwal » Mon Oct 06, 2025 6:46 pm » in Batch and Online » CICS, Middleware and MQ Series. » SMS & VSAM and BDAM, BSAM, QSAM, BPAM, ISAM, OAM.

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5177 Views

Last post by Aditi Patwal
Wed Jan 21, 2026 1:20 pm
Track memory leaks in long COBOL jobs

Last post by Robert Sample « Mon Jan 12, 2026 8:24 pm
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by Abhilash Sharma » Mon Jan 12, 2026 1:30 pm » in Announcements, Moderators & Guests » Site Announcements and Rules.

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Last post by Robert Sample
Mon Jan 12, 2026 8:24 pm
Testing field migrations safely

Last post by Vibha « Thu Jan 08, 2026 12:30 am

by Vibha » Thu Jan 08, 2026 12:30 am » in Utilities & Tools » Testing Tools, Mainframe Application Testing, Abends Solution & QA.

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Last post by Vibha
Thu Jan 08, 2026 12:30 am
Multi‑volume VSAM clusters—safe?

Last post by enrico-sorichetti « Tue Jan 06, 2026 6:30 am
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by Abhay Gadkari » Tue Jan 06, 2026 1:30 am » in Batch and Online » CICS, Middleware and MQ Series. » SMS & VSAM and BDAM, BSAM, QSAM, BPAM, ISAM, OAM.

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Last post by enrico-sorichetti
Tue Jan 06, 2026 6:30 am
Audit trail for batch updates

Last post by enrico-sorichetti « Wed Dec 31, 2025 4:54 am
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by Aarohi Saxena » Wed Dec 31, 2025 12:30 am » in General » Other Mainframe Topics, Off-Topics, FAQs.

1 Replies

1087 Views

Last post by enrico-sorichetti
Wed Dec 31, 2025 4:54 am
Avoid RUN‑TIME STACK overflow

Last post by enrico-sorichetti « Tue Dec 30, 2025 3:32 am
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by Abhishek Awasthi » Tue Dec 30, 2025 12:30 am » in General » Other Mainframe Topics, Off-Topics, FAQs.

1 Replies

1112 Views

Last post by enrico-sorichetti
Tue Dec 30, 2025 3:32 am
speculation about interfacing REST API from rexx

Last post by Anuj Dhawan « Wed Dec 03, 2025 9:36 pm
Replies: 1
by Pablo-Fuentes » Wed Dec 03, 2025 3:11 pm » in Languages » TSO, ISPF & REXX (Do you still do CLIST?!).

Rating: 3.8%

1 Replies

2265 Views

Last post by Anuj Dhawan
Wed Dec 03, 2025 9:36 pm
Happy Diwali!

Last post by Anjali Chopra « Mon Oct 20, 2025 10:15 am

by Anjali Chopra » Mon Oct 20, 2025 10:15 am » in General » Suggestions & Feedback : About the website.

Rating: 3.8%

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3625 Views

Last post by Anjali Chopra
Mon Oct 20, 2025 10:15 am
COMP vs COMP‑3 arithmetic surprises

Last post by enrico-sorichetti « Sat Oct 11, 2025 4:43 pm
Replies: 1
by Aakash Kochar » Sat Oct 11, 2025 2:59 pm » in Languages » IBM COBOL, GnuCOBOL (OpenCOBOL), OOCobol.

1 Replies

3192 Views

Last post by enrico-sorichetti
Sat Oct 11, 2025 4:43 pm
Tools for testing in mainframes

Last post by Anushka Sharma « Fri Oct 10, 2025 7:45 pm
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by Anushka Sharma » Sat Oct 04, 2025 1:16 pm » in Utilities & Tools » Testing Tools, Mainframe Application Testing, Abends Solution & QA.

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Last post by Anushka Sharma
Fri Oct 10, 2025 7:45 pm

Announcements, Moderators & Guests

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Site Announcements and Rules.
Announcements: A member should be concerned about. And the Rules you should follow.
Subforums: Downloads. , Applications
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99 Topics

541 Posts

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You are a Moderator.
If you are a Moderator you can login here.
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104 Topics

678 Posts

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You are a Guest.
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61 Topics

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IBM COBOL, GnuCOBOL (OpenCOBOL), OOCobol.
OS/VS COBOL, COBOL II, Enterprise COBOL for z/OS. OpenCOBOL and OOCobol.
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268 Topics

1426 Posts

Last post Re: COMP vs COMP‑3 arithmetic…
by enrico-sorichetti View the latest post
Sat Oct 11, 2025 4:43 pm
TSO, ISPF & REXX (Do you still do CLIST?!).
Time Sharing Option, Interactive System Productivity Facility and REstructured eXtended eXecutor
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141 Topics

728 Posts

Last post Re: REXX EXECIO vs LINEIN — w…
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Tue Jan 27, 2026 12:59 pm
Assembler & PL/I.
HLASM for MVS. PL/I for MVS & Enterprise PL/I for z/OS.
Subforum: C, C++ and Java for Mainframes.
Topics: 82

82 Topics

268 Posts

Last post Re: difference between PL/1 a…
by zum13 View the latest post
Wed Aug 21, 2024 2:17 am

Databases

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IBM DB2 and IMS DB/DC
RDBMS from IBM and IBM's Hierarchical DBMS and Transaction Manager (IMS DC).
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208 Topics

847 Posts

Last post DB2 batch SELECT taking too l…
by Aakash Kochar View the latest post
Mon Oct 06, 2025 6:42 pm
Other Databases on zOS.
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25 Topics

61 Posts

Last post Re: Can some plz tel me about…
by Rahul View the latest post
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Batch and Online

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JCL - Job Control Language.
JES2/3, JCL, utilities.
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218 Topics

1070 Posts

Last post Re: IDCAMS - HowTo force an A…
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CICS, Middleware and MQ Series.
Customer Information Control System. Middleware and MQ Series.
Subforum: SMS & VSAM and BDAM, BSAM, QSAM, BPAM, ISAM, OAM.
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253 Topics

1073 Posts

Last post Re: Variable‑length records i…
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Wed Jan 21, 2026 1:20 pm

Utilities & Tools

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File-AID and IBM File Manager.
File-AID from Compuware and File Manager from IBM.
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35 Topics

174 Posts

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by zum13 View the latest post
Fri Feb 02, 2024 9:57 pm
IBM DFSort, ICETOOL, ICEMAN, ICEGENER.
IBM's Sort Product, ICETOOL, ICEMAN and ICEGENER.
Topics: 103

103 Topics

466 Posts

Last post SORT to split file by record …
by Ankit Gupta View the latest post
Sun Sep 28, 2025 7:20 pm
SyncSort, SyncTool, SyncGener.
SyncSort's Sort Product, SyncTool for z/OS, SYNCINIT and SYNCLIST.
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49 Topics

249 Posts

Last post Change PD to PD.
by Shahid View the latest post
Sun Nov 10, 2024 10:28 am
Testing Tools, Mainframe Application Testing, Abends Solution & QA.
Mainframe Application Testing, Offline testing and Tools. Xpediter, IBM Debugger.
Subforums: Application Change Control Software for MVS, OS/390 and z/OS. , Scheduling Software for MVS, OS/390 and zOS
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141 Topics

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Last post Testing field migrations safe…
by Vibha View the latest post
Thu Jan 08, 2026 12:30 am

General

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Introduce Yourself and Share Your IT Experience.
Meet and greet the other members here and introduce yourself to the world, the way you want -- pull up a chair and make yourself comfortable!
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146 Topics

441 Posts

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by BobP View the latest post
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IT News.
Latest IT News - Mainframes or Non-Mainframes.
Subforum: IT Certificates.
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747 Topics

843 Posts

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Other Mainframe Topics, Off-Topics, FAQs.
Other Mainframe related questions which attracts you and there is no suitable Forum you find for it and related FAQs.
Subforums: Programming Algorithms. , zLinux, USS and other Operating Systems for Mainframes.
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386 Topics

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Last post Listen up, mate, check out th…
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Suggestions & Feedback : About the website.
Share your feedback and suggestions about the website here.
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264 Topics

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Last post Happy Diwali!
by Anjali Chopra View the latest post
Mon Oct 20, 2025 10:15 am

Other Products for mainframes

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AppStore & Mainframes, Simulators and Emulators.
Anything about Mainframes - it's going away to Dinosaur is still roaring! To discuss/develop Mainframes Apps on/for Android Apps, Google Play Store and Mac App Store. Tools related to Mainframes usable on other Platforms like Windows, Android or Mac, Linux.
Subforum: Hercules, z390, zCOBOL, CBT Tape Files.
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25 Topics

81 Posts

Last post Re: CBT Tape files
by Md.Imtiaz View the latest post
Sat Aug 14, 2021 1:31 am
Tip Of the Day.
A Mainframe-Tip a Day keeps the bugs away!
Subforums: Follow up on Tips , Terminology is Important.
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23 Topics

227 Posts

Last post Re: DCB and DSCB.
by Robert Sample View the latest post
Mon Apr 30, 2018 4:58 pm
User Contributions.
Registered Members can share Internet Links and/or Documents on Mainframe Technologies here.
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122 Posts

Last post Re: Joe Piscopo.
by aliciaazuri View the latest post
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zDigital

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zCloud Computing and related news
General Cloud Computing Discussion , Discussion on Vendor Specific Cloud Computing Tools for mainframes, Cloud Computing Certifications.
Subforum: SAS & Cloud Computing.
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41 Topics

102 Posts

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DevOps for Mainframes and related news
General DevOps for Mainframes Discussion, Vendor Specific Cloud Computing Tools for mainframes, DevOps Certifications, IDz, Topaz, IBM DBB, Jenkins
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86 Posts

Last post Re: Git push failing with lar…
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Big Data for Mainframes and related news
Big Data implementation on Mainframes
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20 Posts

Last post Mesmerizing plush toy robots …
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