Mainframe, MVS and zOS Discussion

If you are running batch jobs then you definitely need JCL. You don't need to know everything - just the basics. As someone new to the mainframe world you would not be expected to know everything on day 1. Just find out where the manuals are. And learn that control cards are not JCL but are control ...

Have you tried reading an introductory manual or searching the internet? And that is an IMS question so why post in the JCL forum?

How can you issue a get next within parent if you do not have a parent? Think about it.

gives: Suggest you read up about concatenation as that is a basic part of Rexx.

Write yourself a little program that takes a value as a parameter and uses that to issue a return code. Create a procedure with as many executions of the program as you need with differing parameters and condition codes and check out the results.

Schedule the job so that it runs after the dataset is created. Alternatively, use IDCAMS to list the entries and then a program to check through the resultant list and set an appropriate return code.

Just a note - it is preferable not to add attachments when seeking a solution to a problem. Use cut'n'paste instead.

Read the IBM COBOL Language Reference for the level of COBOL that you are using (assuming that you are using IBM COBOL). I checked the 5.1 version which was the latest that was returned on my search - and guess what?

Go see whoever and ask them why so many records and what is the max that you should expect. That amount of "growth" so suddenly seems fishy - has something changed? Have they got the budget for that amount of dasd? You may prefer to shove the dataset onto tape.

Yes (without double checking your arithmetic!). If your file is definitely that size. But, I would probably code either 600,100 or 500,100 just to have nice round figures - 15 * 500 is easier than 15 * 555 for mental arithmetic!

A simple browsing of each would have shown you that they are different from each other. JESMSGLG contains the console messages issued for the job although some might not actually go to a physical console (not sure about that) and JESYSMSG shows the dataset allocation messages, and other information,...

I am pretty sure you can just get a member list up and select the components that you need. Same for putting them back and promoting.

For example, if this data set has 1,000,000 records - what is the best SPACE I can code for it? I gave you the steps for doing the calculation yourself so do it. As it is stated the question is meaningless as you do net specify the LRECL. Is it 1 million records of 1 byte each (1 million bytes) or ...

My question is -- as we've code SPACE=(4068,(500,500),RLSE) - will that play some role in the abend? Yes And what is the best way to avoid the space abend? By specifying enough space. 4068 is your lrecl - I believe you should have your blocksize here but I could be wrong. I usually code in TRK (CYL...

Did you try googling for 'cobol compilers'? You can cut down that list by googling for 'free cobol compilers'. The zCOBOL compiler is incomplete in its support for keywords and abbreviations of keywords. I had to write my own macro to permit the use of the abbreviation 'ID'.

Then you will need a program to red the dt, update it and write to anothe dataset.

If your data is instream i.e. after a DD * AND you are using the ltest z/OS then you can use symbolics in your data.

Do not execute the job every half hour - execute it when the dataset is received. The scheduler can do this for you.

Did you check the manual? Unless it is recent then the answer is "no". IMS returns one segment at a time although it is possible that with a path call it will return the segments from the path (not sure on that). But it will return ONE target segment so what good would grouping it be?

Are you really converting the 7 byte comp-3 fields to 13 byte alpha numeric-fields? I haven't checked that both layouts do total 120 and how about your FILLER?

It would help if the actual skills required were mentioned e.g. language, DBMS etc