Re: A side, B side and PTFs

["Justin C. Haase" <jchaase@xxxxxxxxx>]

And if you perm-apply a temp PTF, it deletes the backup of the old
stuff.  There's no going back for you at that point.  Means a
re-install of the affected product if you want to get rid of it.  See
V5R3 and the dangerous cume package from last year with the PTF that
busted DASD config in DST.  SLIC replacements for everyone!  Woo hoo!

jch

On 10/1/07, rob@xxxxxxxxx <rob@xxxxxxxxx> wrote:
> You're right, on a new upgrade, or a new install, you will be on the A
> side until your first IPL.  Often performed when you install the cume.
>
> All permanently applied PTF's will be in force when you are on the A side.
>  All permanently, and all temporarily applied ptfs will be available when
> you ipl on the B side.
>
> Some ptfs insist on going straight to permanent.
>
> Temporarily applied ptfs eat up more disk.  They keep a backup of the
> object they replaced in a save file.  If you remove a temporarily applied
> ptf then it will restore the object out of the save file.
>
> Rob Berendt
> --
> Group Dekko Services, LLC
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>
>
> "Joe Pluta" <joepluta@xxxxxxxxxxxxxxxxx>
> Sent by: midrange-l-bounces@xxxxxxxxxxxx
> 10/01/2007 10:00 AM
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> Subject
> A side, B side and PTFs
>
>
>
>
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>
> Now to apply PTFs.  I have all the PTFs in .bin files, and I loaded them
> onto my V5R3 machine just to see them.  They all seem fine.  So the next
> trick is to load them onto the machine.
>
> How would you folks describe the A and B sides in laymen's terms?  I get
> confused when I consider A/B IPL sources vs. permanently applied and
> temporarily applied PTFs.
>
> I am IPLing from the A side simply because that's how the scratch install
> sets you after you install the LIC.  At what point do you switch to the B
> side, and what does it mean?  Do temporarily applied PTFs work on both
> sides, or only on the B side?  If I want the A side to act as a "backup"
> (that is, something I can IPL to in case of catastrophic failure of a PTF
> on
> the B side), do I have to permanently apply the current PTFs?
>
> I want to finally understand this point once and for all.
>
> Joe
>
>
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