MVSFORUMS.com

spalanis · Beginner Joined: 19 Jul 2006 Posts: 32 Topics: 15

Hi Guys,

1. Searched through the forum and did not found any satisfactoy explanations.
2. Assuming "no question is stupis", posting this question.

So here we go....

I have a batch load module which takes 150 bytes file as input and gives 250 bytes file as output. My current requirement is to call this batch load module REALTIME and get the output file. How should I do this?.

Please advise.

Thanks,
Srini

Nic Clouston · Posted: Wed Jun 25, 2008 12:10 pm Post subject:

I'm not sure I entirely understand the question but - BMP?
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Utility and Program control cards are NOT, repeat NOT, JCL.

spalanis · Beginner Joined: 19 Jul 2006 Posts: 32 Topics: 15

Hi,

To explain further, I need to call this COBOL load module from Java or any front end tool realtime. I need to pass the 150 length data as input to this batch module which currently is accepting the input from a Flat file in DD parameter and I need to capture the output which is currently in output DD file and trasfer to front end.

I hope I explained better now.

Please advise.

Srini

Nic Clouston · Posted: Wed Jun 25, 2008 12:26 pm Post subject:

Right, that is clear now. I have no clue about Java on the mainframe but I would assume it has a programmer's guide which should mention how to call external modules written in various different languages.
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Utility and Program control cards are NOT, repeat NOT, JCL.

CraigG · Posted: Wed Jun 25, 2008 1:39 pm Post subject:

Seems to me that you will need to change from file input/output to linkage section.

hari_uss · Posted: Wed Jun 25, 2008 7:06 pm Post subject:

Is MQ an option at all?

semigeezer · Posted: Thu Jun 26, 2008 10:42 am Post subject:

You should be able to do dynamic allocation to the input and output data sets by calling BPXWDYN from Java. You can probably use JZOS to do this or you may be able to use some built in function System.exec or something (I don't know Java well enough) to call BPXWDYN and your module and to call your module. But you need to read the MVS data set to get the output so you can either use JZOS or run a cp command to copy the output to the USS file system and read it from there using normal Java I/O. If you are really lucky, maybe your program can write directly to a ddname allocated to a path (see the JCL or Unix manuals about allocating a path to a dd)
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