Thanks Steve. What about STC's?  

Raleigh Naidoo 
Z/OS Systems Programmer 
Mainframe System Software 
Phone +61 3 96163969
Mobile +61 412 257 543

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of Thompson, Steve (SCI TW)
Sent: Tuesday, 31 October 2006 9:43 AM
To: [email protected]
Subject: Re: SMF JWT

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On
Behalf Of NAIDOO Raleigh (AXA-Tech-AU)
Sent: Monday, October 30, 2006 4:25 PM
To: [email protected]
Subject: SMF JWT

1. The SMF JWT parm specifies the maximum amount of time that a job or
TSO/E user address space is allowed to wait continuously specification .
Does this include started tasks? If not what determines the S522 abend
condition  for started tasks.  

2. We are considering changing the JWT from 10 minutes to 2 hours and I
am  interested in any experiences  I should be aware of.

<snip>

Experience info: First off, depending on TSO usage (number of logons in
a day), you will recover some portion of your system because users won't
have to keep logging on, or running keep-alive code (CLIST or REXX).
This will tend to increase productivity.  All of this assumes that you
do not already have an exit that recognizes a TSO session and resets the
time-out just for TSO users (or the beloved group).

Next, you may have to increase the USERMAX for TSO, as you may find that
you now have more TSO users on at a time than you have allowed for.
There may be a need for an equivalent adjustment in PARMLIB(IEASYSxx)
MAXUSER (and associated parms).

Lastly, it will take longer for things to time-out that are waiting for
some event to occur (such as tape mounts).

Regards,
Steve Thompson

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