On Jan 14, 2008, at 8:38 AM, Mark Zelden wrote:
On Sat, 12 Jan 2008 17:55:27 -0500, Robert A. Rosenberg
<[EMAIL PROTECTED]>
wrote:
At 22:58 -0800 on 01/04/2008, shai hess wrote about Re: SMP/E and
why not.:
My biggest gripe with the design of SMP/E is the use of a RESTORE
design that will back-out a PTF (or set of PTFs) to get back to the
state you were in (or would have been in) before you APPLY'ed the
PTF(s). Right now you must RESTORE PTFs that you will just turn
around a reAPPLY just to RESTORE a PTF that PREs or SUPs the PTFs. A
better design is to see what SYSMOD owns each element that is being
RESTOREd and just do an automatic APPLY of only that element instead
of removing elements that are not contained in the PTF being
RESTOREd.
IOW: PTF1 contains elements A and B and PTF2 (which PREs PTF1)
contains an updated element B. To Restore PTF2 you should not need to
ALSO restore PTF1 (which then needs to be reAPPLY'ed) but just use
the PTF1 version of B to replace the PTF2 version of B. The current
implementation of RESTORE forces a string of PTFs to get RESTOREd
(only to then get APPLY'ed again) due to the fact that the contents
of the PTF getting RESTOREd intersects multiple PTFs (each of which
contain elements not in the PTF being backed out).
------------------SNIP-----------------------------
The real problem I've run into is that many sysprogs think you should
never ACCEPT anything. I don't know where / when that was taught
to sysprogs, but you'd be amazed how many live by that philosophy.
--------------SNIP-------------------
Mark:
I think it has to do with these two reasons.
1. There is *NEVER* enough time after implementation to do so.
2. The proverbial it worked last year before you put the maintenance
on just go back the point and run my job.
#2 is is typically some really important user and management has to
roll over and try and please him.
I am not agreeing just explaining.
Ed
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