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I agree with Phil. It’s fairly easy to control which libraries can be accessed by which users. And it’s fairly easy to control which users can use WRKQRY.

But combining the two would take work.

And for those limited librairies can we assign a limit or quota to the storage usage per user id ou user group to avoid creation of enourmous files?

It’s also fairly easy to control how much storage various users may use up.

However, it sounds like what you really need to do is to put an overall authority scheme into place. If your system doesn’t have a structure in place, you will be getting into a mess by setting authorities that will be difficult to control in the future. There will be too many details that will take too much time to manage.

How many libraries do you want to control? How many non-system libraries are there altogether? How many users are on your system? (Exact numbers aren’t needed, but the counts should be within 10% or so.)

Tom