DISP parameters

Musab Razeen Ahmed · New User Joined: 24 Feb 2011 Posts: 16 Location: India

Hi everyone,

could any one please explain me what would happen in the following scenario?

scenario: job1 is currently running and is using a dataset named dd1. Now I run another job simultaneously that accesses the same dataset with

1. DISP=NEW
2. DISP=MOD
3. DISP=OLD
4. DISP=SHR

In case of the above cases what would be the result of the scenario ?

MUSAB AHMED

chandracdac · New User Joined: 15 Jun 2007 Posts: 92 Location: bangalore

Hi

Your question is not clear. Mention the full details like the data set u r using is input or output .. and explain us what you want to know exactly so that some one can explain it clearly.

Thanks
C

dbzTHEdinosauer · Posted: Fri Mar 25, 2011 12:54 pm

everything depends on the job1 disp parms.

the jcl user's guide provides an excellent discussion on this rookie/interview topic.

you could also look at previous threads in interview questions and/or jcl to find the answer.

dbzTHEdinosauer · Posted: Fri Mar 25, 2011 2:19 pm

easy way to remember is
1. exclusive 'lock/hold/disp' on anything prevents any type of access by another task.
2. a task can not have an exclusive when another already has 'any type' of access.