JCL - INCLUDE Condition

[nbmurali307]

I'm new to JCL programming. I have a clarification in JCL; again I don't know whether I could ask the question here, In JCL,

Question 1:
I have created a program to extract information from a set of dataset(s). I tried with 1 dataset with some condition and it gives me the output size of 10 megabytes and tried with 10 dataset(s) with the same condition in one JCL program and it gives me the output size of 10 megabytes. Is there a size limit for JCL output file. If yes, how could I increase from 10megabytes to 20megabytes? and what is maximum limit I could increase.

Question 2:
If I want to filter the records using a JCL include condition, how should I specify the condition for my specific need. Please refer the below example records.

e.g:

20060320 B6J8 PK E2156B 04 0PK74 0009 2
20060320 B6J8 PK E2156B 04 0PK74 0012 1
20060320 B6J8 PK E2156B 29 *I+ 0014 1
20060320 B6J8 PK E2156B 34 QC/+ 0016 1

In the above records column position 30,2 I want to filter the 2bytes from the position 30-31 and it should be alphabets or numeric (both 2 bytes should be alphabets or numeric)

Thanks in advance. Bala

[Frank Yaeger]

1. The size of the output data set depends on the space you allocated for it. For example, if you specify SPACE=(CYL,(5,5)), you'll get a primary of 5 cylinders and secondaries of 5 cylinders as needed. To increase the size of the output data set, increase the space you allocate for it.

2. You can use a DFSORT job like this to do what you want. I'm assuming by alpahabetic you mean 'A'-'Z' and by numeric you mean '0'-'9'.

[nbmurali307]

Hi,

First, I have no idea how the cylinder definition work, how many do I need to define as the primary and how many as the secondary in order to capture all the data I need. Secondly, do I have a limit on how many cylinders I can define in our JCL?

how do I decide how many primary/secondary cylinders to define.

Thanks in advance.

Bala

[Frank Yaeger]

That's something you have to determine based on the amount of data you'll be writing to the output data set and the capacity of the devices you're using for output. There are formulas for how much data fits on a track, cylinder, etc for each type of device.

If your output data set size will be equal to your input data set size, you can just look at the space information for the input data set and allocate the same amount for the output data set. One way to check the space used for the input data set is with ISPF 3.2.

This is pretty basic JCL stuff. I'd suggest doing some reading or taking a class.
_________________
Frank Yaeger - DFSORT Development Team (IBM) - yaeger@us.ibm.com
Specialties: JOINKEYS, FINDREP, WHEN=GROUP, ICETOOL, Symbols, Migration
=> DFSORT/MVS is on the Web at http://www.ibm.com/storage/dfsort