Mainframe, MVS and zOS Discussion

Thanks. There are GnuCOBOL Compilers, do they also behave same? How can we check that?

Thanks Robert.

You are correct, there is a sequential search in the program. I had to change that search to BINARY search and that did not work with this code, as you said. This code was needed to be changed. Thanks again for your explanation.

There is a table in COBOL program which is defined like this: 05 TAB-REC OCCURS 5000 TIMES. 10 TABLE-NEW PIC X(08). 10 TABLE-OLD PIC X(08). 10 TABLE-TYP PIC X(03). Now later in the program it is used like this: 3000-GET-MATCHING-JOB. IF AU-NEW-JOB-NAME = TABLE-NEW(INDX) MOVE TABLE-TYP(INDX) TO SAVE-...

The OFFSET compiler option will give the displacement of the first instruction generated by the compiler for the line of code. The LIST compiler option lists all the generated instructions. An offset from an abend can be found exactly in the LIST output, except for the important case Robert mention...

In our company, when it's a mainframe project and people talk about legacy modernization, it always means to get away from mainframes. But according to some of the recent advancement in mainframes, should legacy modernization really meant to move away from mainframes? Such news are worrisome. If it...

I've seen various systems running on Windows servers described as "legacy systems" so legacy modernization may not refer to a mainframe (even though most of them do).  Broadly, legacy modernization is the process of moving legacy systems (HOWEVER they are defined) to a modern platform usi...

nicc wrote:However, RXVSAM is a non-standard add-on which many (most?) sites do not have.

oh...thanks for that information.

For a COBOL programmer, the key parts of the dump are the information about the offset in the program where the ABEND occurred (which gives you the statement that has the problem -- use the OFFSET or LIST compiler output to find the line with the offset or closest match to the offset and that's the...

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Hi, What is Legacy Modernization? I thought it was to do with moving to newer technologies, like moving away from the mainframes. But when searched the forum on this I got to the topic http://www.zmainframes.com/viewtopic.php?f=35&t=2045  which says same for something else: they both describe pl...

I guess it depends on the process: take an ATM withdrawal transaction - front-end testing would be testing the software on the ATM and back-end testing would be the processing of that transaction once it has been passed to the mainframe (or wherever) for amending account balances, writing journals ...

William Collins wrote:You don't have to worry about calulating it. The compiler does it for you. By the time you are able to locate an index in a dump, you'll be comfortable with how it was calculated.

Can you please guide how to understand the dump? I hardly understand anything there.

Thanks enrico-sorichetti. But we don't have File-Manager. I have searched more on it and have below examples with me now. Using the REPRO command and a temporary non-VSAM data set, a REXX exec can use EXECIO to retrieve and update VSAM data, as shown in this example: "ALLOCATE DD(TEMPDD) NEW SP...

[font=Arial]Hi, [/font]

[font=Arial]I searched for it but i came to know that we can not access VSAM using REXX? Is it so? Is not it possible to read a KSDS VSAM in REXX? [/font]

[font=Arial]Thanks in advance for any help.[/font]
[font=Arial] [/font]

Ok, Thanks. But how can we relate it to the mainframes?

Ok. Thanks, hopefully I'll start understing these things more as I progress.

Ok got it. I've read some weired way of calculating it and was confused.

Thanks.

Thanks Robert.

Robert Sample wrote:An index represents an offset into the table whereas a subscript represents an occurrence

Is there a way to calculate the offset for the gven index in cobol table?

Thanks Robert.

What does it mean that "data aligned on double-word boundaries"?