RE: SAVCHGOBJ question - rephrased

Dennis -

The reason (IMHO) that your SAVCHGOBJ runs the same amount of time with your
large libs omitted is that you said earlier that you also save these
libraries to a SAVF and then back up the SAVF.  Since the SAVCHGOBJ uses
REFDATE(*SAVLIB) if you had just saved these libraries to a save file there
would be no changed objects in them.  If you monitor performance data you
may want to consider omitting your Performance Data Library (usually
QPFRDATA).

If you decide to use SAVACT(*SYNCLIB) you should also specify a SAVACTMSGQ.
Then you can tell when the libraries are synced and it is safe to run jobs.
Or you can monitor for the SWA message(CPI3712) and submit your job with the
CHKOBJ after it is received.  Per the help text, once the sync message is
received "The objects can be used by most applications. However, while
save-while-active processing is completing, some applications may find some
objects in use."  My 160 GB system(720) syncs its daily SAVCHGOBJ in under
10 minutes.

It is true that there is no IBM command that does a restore of changed
objects for *ALLUSR, you need to know all of the libraries on the tape that
you are restoring changes from.  There is a TAATOOL command, RSTALLCHG that
I believe will also do this.

Scott Ingvaldson
System Administrator
GuideOne Insurance Group


-----Original Message-----
From: Dennis Munro <DMunro@badgerminingcorp.com>
To: "'midrange-l@midrange.com'" <midrange-l@midrange.com>
Subject: RE: SAVCHGOBJ question - rephrased
Date: Sat, 14 Sep 2002 09:35:58 -0500
Reply-To: midrange-l@midrange.com

Let me rephrase my question.  SWA was just a question & not something I want
to get involved in because it doesn't make sense in out organization.  I'm
just trying to get my problem solved!

What I am trying to determine is the length of time the "lock" is placed on
the system in reference to the statement below.

<snip>
As I read through the help for the SAVCHGOBJ command, it says  "Specified
objects that were changed and the libraries where they reside remain locked
during the save operation".
<snip>

Obviously it didn't work last night either otherwise I wouldn't be here at
work trying to get this fixed & truly understand my problem.

The only thing I can "assume"  (don't you love that word because that is how
I feel) is that when the SAVCHGOBJ command starts, the "whole" system is
locked???????????  And I just don't want to believe IBM would do that -
but......  All I can see from my job logs is that I have a timing issue.  I
will redo my CL program by putting in a "delay" of a couple of minutes & the
two other jobs that run via the job scheduler will execute at an earlier
time than the SAVCHGOBJ - during the delay I just created.

Another thing I found was that the SAVCHGOBJ OBJ(*ALL) LIB(*ALLUSR) command
takes the SAME AMOUNT OF TIME as the same command  with the parm
OMITLIB(BPCSF BPCSUSRF) included.  The library BPCSF is almost the largest
object on my system & I'm thinking the SAVCHGOBJ should get done sooner
omitting those two libraries.  Both commands process through my user
libraries in 31+ minutes.  Why is that?

Thanks - Dennis.

Dennis Munro