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Questions tagged [zos]

z/OS is a 64-bit operating system that runs on IBM's traditional mainframe hardware, also known as System z.

z/OS, along with zLinux, zTPF, z/VSE and z/VM, is an operating system which runs on IBM's System z hardware.

This tag should be used when asking questions related to the specific operating system z/OS, associated tags may be mainframe, cics or db2 (provided you're talking about the mainframe versions of those products).

A descendant of OS/360, a primary design premise is backward compatibility. Application programs dating from the 1970s continue to run unaltered on modern z/OS systems.

IBM provides the z/OS basic skills education Knowledge Center, click on the table of contents link for a list of topics.

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SAS Datasets Read From Multiple Z/OS Tapes. Number of Tape Volumes Limitation?

I need to read large SAS data sets stored on tape in Z/OS that are spread across multiple tapes. I am not in a position to move this data off tape and to store it on our DASD storage on our mainframe. I am wondering does SAS 9.4 on Z/OS have a…
nvlm
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Display the loadlib at runtime

Currently in my shop, we have a standard SYSOUT header that displays a bunch of useful information such as: Program name Environment Start time When the program was compiled One thing that would be very useful for us would be to display which…
SaggingRufus
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How to publish messages directly from existing Mainframe application to Kafka topics?

We are planning to replace IBM MQ with Apache Kafka to implement pub-sub use-cases in future. Currently Mainframe(running Z/OS) applications are written using COBOL programming language & pushing messages to MQ. I went through the documentation to…
Sunny Goel
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What is a "Load Module"?

I've been reading about linking and loading (one of OS topics, not specific to any language), and I've come across this term "Load Module" without any previous reference to it. From what I understand about the way it has been used, it seems like a…
pasha
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View code generated by IBM's Enterprise COBOL compiler

I have recently started doing some work with COBOL, where I have only ever done work in z/OS Assembler on a Mainframe before. I know that COBOL will be translated into Mainframe machine-code, but I am wondering if it is possible to see the…
GrapeSoda3
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How can I get a parser generated by ANTLR3.5 in C to work in an MVS EBCDIC environment?

We are using ANTLR 3.5.2 on linux to generate a parser in C. We have been able to compile and link the generated C parser and the ANTLR C runtime on z/OS with the LE C compiler. Of course, we'd like the parser to be able to work in the EBCDIC…
user3803240
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SQL differences for DB2 versions

We are developing software that generates and executes SQL queries for Oracle and SQL Server using ODBC drivers. We are researching the possibility to expand to DB2, but I read that there are several versions available. DB2 for LUW, for iSeries and…
Bert
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What is DPRTY in z/OS JCL?

When we submit a job, the following steps are executed sequentially. Then what is the importance of DPRTY?
venkatram
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Encoding QR Code on ZOS platform

My question is for QR Code support on the ZOS platform. We have legacy systems that produce many printed documents and mailings. I have been tasked with the challenge of developing a called routine that can receive a 200 byte string of variable…
user3775816
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How do I force BIRT to display zero values?

I have a situation in BIRT reporting. A report I created is insisting on displaying some fields as blank rather than zero. The situation arises when the field is actually a sub-select that returns no rows. So for example, if the select includes: 0…
paxdiablo
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UNIDENTIFIED OPERATION FIELD JCL

I am trying to understand where I am going wrong in my JCL file. Here is my code as follows: //MULTG013 JOB 1,NOTIFY=&SYSUID //STEP1 EXEC PGM=ICEGENER //SYSUT1 DD DSN=UNTG013.DATAIN(AUTODATA),DISP=SHR //SYSUT2 DD…
user3474116
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Is there some way to access Sql server from z/OS mainframe and have the result in IBM 3270 terminal emulation?

Is there any way (possibly cheap) to access Microsoft Sql Server from z/OS mainframe (COBOL programs) and have the result in 3270 terminal emulation? I'm aware that 3270 is a pretty old system, but in bank CED, is still very popular.
systempuntoout
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What are the REXX commands to open, close, read, and write files to a TAPE drive?

As stated in my title, I am hoping that some one can throw some basic REXX commands my way. I have user guides but they are very huge and the table of contents do not point to anything TAPE DRIVE related. I just need to know the basic commands for…
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What are the relative merits of REXX and CLISTs under z/OS?

What are the advantages and disadvantages of using either REXX or CLISTs in TSO for z/OS? My understanding is that CLISTs are just an older command language but we seem to receive a lot of new software using them, even though REXX is now standard…
paxdiablo
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How to submit JCL on IBM zOS through Java web app?

Can someone tell me the best way to run a piece of JCL on IBM zOS from a Java web app on a different server (Windows). I also need get a response code back from the job. The 2 options at the moment are: 1) Using JES - But its hard to get the…
irishguy
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