Creating 'N' number of files dynamically

sakthi16 · New User Joined: 12 May 2008 Posts: 13 Location: India

Hi,

I have requirement to read a single file and to create 'N' number of files based on field.

if a new fields comes today then i need to store it for future processing. how can i do this?

can anyone help me on this ?

prino · Posted: Thu Apr 14, 2011 2:30 am

Write a Cobol, PL/I or REXX program and dynamically allocate the files.

You cannot do this with just JCL!

Escapa · Posted: Thu Apr 14, 2011 2:56 am

Looks homework assignment to me...

sakthi16 · New User Joined: 12 May 2008 Posts: 13 Location: India

Ya. We can not do this with just a JCL, can any one try to provide a best possible solution ?

Here the problem is Im handling a Variable length file.

the field mared in bold is the condition field.

For ex,

Input file

HDR
DSTART1AABBCCT5
DATA2BBCCRRR
DEND
DSTART1AABBCCT2
DATA2BBCCRRR
DEND
DSTART1AABBCCT5
DATA2BBCCRRR
DEND
DSTART1AABBCCT1
DATA2BBCCRRR
DEND
DSTART1AABBCCT2
DATA2BBCCRRR
DEND
LET

Output file

In this case we have three output files

first file

HDR1
DSTART1AABBCCT5
DATA2BBCCRRR
DEND
DSTART1AABBCCT5
DATA2BBCCRRR
DEND
LET

second file

HDR1
DSTART1AABBCCT2
DATA2BBCCRRR
DEND
DSTART1AABBCCT2
DATA2BBCCRRR
DEND
LET

third file

HDR1
DSTART1AABBCCT1
DATA2BBCCRRR
DEND
LET

but the condition field can have any value, we have to group the files using the condition field. and need to create 'N' number of output files based on this...

so, output files can be 1 or it can be many every day....

can any one help ?????

superk · Posted: Thu Apr 14, 2011 3:50 am

This would be a good application for your sort tool (DFSORT or Syncsort - we obviously don't know which one you have). It could read your data, determine how many output DD's will be needed and maybe create a series of dynamic names and allocation statements, then format and arrange the data. Then, a set of proper DD and SORT statements could be written out and stored.

Then, your next job could use those details to perform the actual split.

Or, as already stated, you could do this programatically. A lot depends on what's acceptable to you and your shop and how you want to implement this.

There was a very similar topic posted here.