In your JES2PARM member but you can change it dynamically too with an operator 
command. $TJOBCLASS(TSU),TIME=(1440)

Mark Jacobs

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On Wednesday, May 14th, 2025 at 12:56 PM, Phil Smith III <[email protected]> 
wrote:

> Where is that?
> 
> -----Original Message-----
> From: IBM Mainframe Discussion List [email protected] On Behalf Of 
> Mark Jacobs
> 
> Sent: Wednesday, May 14, 2025 12:51 PM
> To: [email protected]
> Subject: Re: EXTERNAL Email: Re: Disable user timeout via JWT?
> 
> You should be able to set TIME=(1440) on the JES2 JOBCLASS(TSU) statement to 
> prevent TSO users from timing out.
> 
> Mark Jacobs
> 
> Sent from ProtonMail, Swiss-based encrypted email.
> 
> GPG Public Key - 
> https://api.protonmail.ch/pks/lookup?op=get&[email protected]
> 
> 
> 
> 
> On Wednesday, May 14th, 2025 at 12:41 PM, Jerry Whitteridge 
> [email protected] wrote:
> 
> > I've always coded the TIME=1440 on the jobcard not the steep.
> > 
> > Jerry Whitteridge
> > Sr Manager Managed Services
> > Tech Operations & Innovation
> > [email protected]
> > 480 578 7889
> > 
> > -----Original Message-----
> > From: IBM Mainframe Discussion List [email protected] On Behalf
> > Of Phil Smith III
> > 
> > Sent: Wednesday, May 14, 2025 7:02 AM
> > To: [email protected]
> > Subject: EXTERNAL Email: Re: Disable user timeout via JWT?
> > 
> > Hmm. Still got an S522 overnight, so I guess that wasn't what you meant?
> > 
> > TWT looks to have the same 24-hour limit as JWT? This is a dev system, we 
> > don't want users forced at all. Surely that's not unique, and doesn't 
> > require use of an exit?!
> > 
> > -----Original Message-----
> > From: IBM Mainframe Discussion List [email protected] On Behalf
> > Of Phil Smith III
> > 
> > Sent: Tuesday, May 13, 2025 5:58 PM
> > To: [email protected]
> > Subject: Re: Disable user timeout via JWT?
> > 
> > I think I did #2:
> > 
> > //DYNISPFM EXEC PGM=IKJEFT01,DYNAMNBR=200,TIME=1440
> > // PARM='%DYNISPF'
> > 
> > That's in my logon PROC. Is that what you meant? Yes, I know very little 
> > about this end of z/OS (or most other ends).
> > 
> > I did make the change from IBMUSER and then log off and back on to be sure 
> > I wasn't locking myself out!
> > 
> > Is there a way to look at the time limit for a running job? I scrolled 
> > wayyyy right in SDSF and didn't see it.
> > 
> > -----Original Message-----
> > From: IBM Mainframe Discussion List [email protected] On Behalf
> > Of Radoslaw Skorupka
> > 
> > Sent: Saturday, May 10, 2025 11:16 AM
> > To: [email protected]
> > Subject: Re: Disable user timeout via JWT?
> > 
> > W dniu 10.05.2025 o 16:33, Phil Smith III pisze:
> > 
> > > Is there a way to keep idle users from getting forced off? JWT in 
> > > SMFPRMxx is documented as taking values 0001 to 2400. We have a handful 
> > > of users on a development system behind a VPN and don't want them forced 
> > > off ever. Is there an easy way to achieve this?
> > 
> > Few remarks:
> > 1. Use TWT instead of JWT. TWT is quite new (younger than me ;-) ). It is 
> > for TSO users.
> > 2. Use TIME=1440 (or NOLIMIT for modern installations ;-) ) in the logon 
> > procedure. It disables both JWT or TWT.
> > 3. Don't forget about TCPIP settings. I can't remember the name, but 
> > network folks like to drop inactive sessions. This is independent from 
> > JWT/TWT, TIME=1440 and other TSO settings.
> > 
> > --
> > Radoslaw Skorupka
> > Lodz, Poland
> > 
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