RE: Re: In over my head again...

>What is the sys1.ucat.tso catalog used for? 
 
SYS1.UCAT.TSO IS the user catalog allocated for TSO users datasets to be
catalogued in. 

>Should users be adding things to it.

Yes, they should.

>I am trying to learn how one of these machines is operated in production so
>if a production shop would not use a system catalog for production work, I
>don't want to either.

This IS how things have been done in production environments. There is a
separate user catalog for TSO users. There would also be other user catalogs
for other HLQ's in the shop. There would be HLQ's for common libraries and
data storage (e.g. the compilers, sort, local COPYLIBs/MACLIBs, Source
libraries). Then, as some shops, especially in those days, would run
production and development on the one machine separate HLQ's for production
and development data.  

It has been some time since I had TK3 up, and am not in a position to be
able to bring it up, but if I recall correctly, the sample ADDUSER job not
only defined the user but also added the user alias to the master catalog
pointing to SYS1.UCAT.TSO.