Rexx tool to alter the management class of datasets

Biswajit Pattanayak · New User Joined: 24 Apr 2013 Posts: 15 Location: India

Hi,
In our mainframe site , dataset get deleted after one day because of the default management class which is allows only one day for the dataset.
To alter the management class I am using the alter command .
But some times I forget to alter the management class and my datasets get deleted.

I want to create a rexx tool to gather all the dataset created by the userid and alter its management class at one go at the end of the end.
But the problem here is some of the datasets are created by the job not by the user(like output datasets created in spufi) , so it is difficult to capture this dataset and change its management class.

Is there any way to find out the datasets created in the mainframe session?

dbzTHEdinosauer · Posted: Mon Aug 12, 2013 1:01 am

you can always run a dslist for datasets for your userid as hlq.

you can also run dslists for datasets created by a userid
(i think you have to access all datasets and the look at the userid of each,
not sure if dslist has a filter for creator,
but you can find out by looking in the rexx manual for dslist.)

but,
professional advice.
learn to create datasets with the appropriate management class
and change the jcl for datasets created in jobs.

Biswajit Pattanayak · New User Joined: 24 Apr 2013 Posts: 15 Location: India

Thanks Dick,

Most of the time I ceate the dataset with with proper management class but the problem is with the dataset created by the jobs i.e output dataset of spufi.

And another problem is most of the dataset doesn't have hql as their userid
e.g tenv.output.dataset created by user id "User1"

Is there any possible way to find this dataset and change its management class through rexx?

dick scherrer · Posted: Mon Aug 12, 2013 2:57 am

Hello,

You need to speak with your storage management people. If this is a problem for you, it is probably a problem for others. The storage management people should be able to tell you what is needed or a different way to get the output you want.

expat · Posted: Mon Aug 12, 2013 1:17 pm

As said by Dick, speak to your storage management people. They build the SMS routines for a reason.

Biswajit Pattanayak · New User Joined: 24 Apr 2013 Posts: 15 Location: India

Thanks Dick and expat.

Storage management people will not change the configuration for me.

I think I have to manualy alter the management class.

Thanks anyway.

Anuj Dhawan · Posted: Mon Aug 12, 2013 7:36 pm

Dick ans expat are correct, however, if you're authorized to do it and you'll know it from Storage management people - migrate and recall the dataset.

An after thought, I put a small snippet to show how to do that but then removed. Somehow I felt it's not wise to advise that upfront.

Akatsukami · Posted: Mon Aug 12, 2013 8:46 pm

Robert Sample · Posted: Mon Aug 12, 2013 9:47 pm

There is a term commonly used for people who decide the rules at their site do not apply to them -- that term is "ex-employee". The SMS policies in effect at your site were determined by people with plenty of experience in creating and using data sets; if you don't like the rules you need to either work to get them changed or accept them as they are. Manually overriding them is NOT a career-enhancing move.

don.leahy · Posted: Mon Aug 12, 2013 9:49 pm

The shop where I work has a simple solution that has been in place for many years, even predating SMS. We use UNIT=DISK to request temporary DASD (which is scratched overnight) and UNIT=TSS1 to request permanent DASD, which retains the data set subject to the rules established for the test environment. That's all the programmer needs to know, as far as the test environment is concerned. Nowadays this is all managed by SMS and ACS routines, but these are generally transparent to the average programmer.

Biswajit Pattanayak · New User Joined: 24 Apr 2013 Posts: 15 Location: India

Is there any to capture the dataset created during the session using rexx or jcl utilities and then altering their management class is easy.

The TSO session job which runs till the session ends has the log of everything done in that session, may be we can read this and find all the dataset ceated/edited and then alter their management class.

I think we can implement it. What say?

dick scherrer · Posted: Tue Aug 13, 2013 12:14 am

Hello,