How to dynamically allocate dataset attributes?

beruoist · New User Joined: 14 Nov 2007 Posts: 70 Location: mumbai

Hi,

Actually there are two cases..

1.There are few records
2.There are whole bunch of records.

So is there any way by which we can achieve the above cases efficiently.

I have just started working in JCL please explain at Beginner's level

Thanks
Beruoist

dick scherrer · Posted: Wed Oct 08, 2008 12:35 pm

Hello,

It is not clear what you are asking.

Please describe what you mean by "allocate attributes dynamically". In what way does this relate to having a few or many records? Where is your concern for "efficiently" based?

Once we understand what you are looking for, someone should be able to offer some suggestions.

Bill Dennis · Posted: Wed Oct 08, 2008 6:52 pm

The usual attribute affected by number of records is SPACE. It's important to code RLSE in your JCL to release overallocated space when the file may have only a few records. This allows your JCL to handle various file sizes. Your site may automatically release unused space from certain files based on DFSMS routines.