When you deal with that group today, what do you expect them to know?
The scheduler, JCL, some basic application debugging, tape management, disk management, phone systems, network operations (file transfers).
You also need them to be able to get on the phone and contact the external vendors and institutions your site works with.
They have to be easy to understand, and be able to work with all of the groups at your site.
So, all of those things is what you need to learn. But first, do like Dick says and get to know a few of them.
Then, get divorced, make sure you have no children or social life and no romantic interests. Because working prod support means you will never have the same schedule twice, can work any time of the day or night, including weekends, and that you are always either at work or sleeping.
Joined: 03 Oct 2009 Posts: 1786 Location: Bloomington, IL
Now, now It wasn't that bad when I was doing ADM (administration, development, and maintenance) for IBM 10-20 years ago; my marriage survived it (although not other things).
One other thing, Khalid; in production support, you may be given powers and abilities beyond those of mortal men (I had the ability to create, update, and delete RACF profiles). Learn to use those abilities before you need them; you may only get one chance to make a mistake.