Re: IPL Processing Sequence

[Jim Oberholtzer <midrangel@xxxxxxxxxx>]

If your doing maintenance and want to start into a restricted state, 
just change the IPL attributes to start that way.  (You have to change 
it each and every time you IPL when you want restricted state)   That 
way you don't mess with the start up program system value.

Also the HMC does not rely on any of those processes running so and HMC 
console should not have issues.  Aside from some small issues with 
connectivity to the FSP the HMC is nearly as reliable as the twinax 
console was  (I did say /nearly/ before the howls start)   While LAN 
console can be a bit more temperamental ordinarily it's quite reliable 
as well.

Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


On 2/8/2012 3:03 PM, Evan Harris wrote:
> I used to do this by habit in order to control everything via the
> QSTRUPPGM but am currently re-thinking this approach.
>
> My old approach has an inbuilt assumption that there will be access
> available that does not rely on TCP, but I have been caught a couple
> of times where this assumption has been faulty and QSTRUPPGM has been
> changed to *NONE - thereby making access to the system problematic
> where there is a console issue.
>
> I often change QTSRUPPGM to *NONE when doing maintenance and this can
> cause access issues if the console is compromised.
>
> On Thu, Feb 9, 2012 at 9:43 AM, Jim Oberholtzer<midrangel@xxxxxxxxxx>  wrote:
> > >  Rich,
> > >
> > >  It sounds a bit like your asking about the TCP/IP servers.  If you need
> > >  to control that use CHGIPLA to stop TCP from starting with
> > >  QSYSWRK/QUSRWRK start and then start TCP/IP and the balance of the TCP
> > >  servers manually in the start up program per your needs.
> > >
> > >  A discussion of the IPL steps from LIC to OS can be found at the Info
> > >  center under Systems Management, Work Management, Reference, IPL System
> > >  reference codes. Until the system is at a point where the the start up
> > >  program runs there's not much you can do with it unless you manually
> > >  IPL, then you have a small amount more control...  but I sense the start
> > >  up program is what your looking for.
> > >
> > >  Jim Oberholtzer
> > >  Chief Technical Architect
> > >  Agile Technology Architects
> > >
> > >
> > >  On 2/8/2012 2:31 PM, Rich Loeber wrote:
> > > >>      Does anyone know where I can find a description of the sequence of steps
> > > >>       and when they get processed during an IPL?  I have some OS maintenance I
> > > >>       want to do during the QSTRUP program, some of which affects exit point
> > > >>       registration.  I'm finding that some server functions are getting started
> > > >>       before I can complete what I need to do in the QSTRUP and the results are
> > > >>       not always pretty.  It would help to know what is happening during the IPL
> > > >>       at each stage and what triggers each event to happen.
> > > >>
> > > >>       Rich Loeber - @richloeber
> > > >>       Kisco Information Systems
> > > >>       [1]http://www.kisco.com
> > > >>       SDG
> > > >>
> > > >>  References
> > > >>
> > > >>       Visible links
> > > >>       1.http://www.kisco.com/
> > > >>  --
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>
> -- Regards Evan Harris http://www.auctionitis.co.nz
> --