We were talking primarily about full volume dump/restore.
What constitutes a reasonable default for the "changed" bit for a
restore of individual datasets may be different, and more debatable,
than what makes sense for a full volume restore. At least when
restoring a limited number of known datasets, there conceivably would be
some possibility of using some post-restore utility to alter individual
dataset change bits if the default didn't suit your purpose.
If you are restoring individual datasets, it is highly unlikely that
your intent is to restore the entire system to some prior point in time.
Whether it makes sense to set, reset, or leave the "changed" bit as-is
in such a case depends on whether or not your system uses DFHSM fast
migrate and/or whether another auto-backup of the restored dataset is
desired.
If you are restoring entire volumes, it is highly likely that you ARE
trying to restore the entire system to a prior point in time, in which
case the only action that makes sense is an accurate restore without any
modification of the change bits.
I would hope FDR full volume restore would do an honest restore and
leave the change bits as they were.
Stephen Mednick wrote:
If you're referring to the update indicator in the DS1DSIND field of the F1
DSCB,
FDR will by default always turn the update indicator on after restoring or
copying a dataset.
Stephen Mednick
Computer Supervisory Services
Sydney, Australia
-----Original Message-----
From: IBM Mainframe Discussion List
[mailto:[EMAIL PROTECTED] On Behalf Of Clark Morris
Sent: Sunday, 1 April 2007 7:10 AM
To: IBM-MAIN@BAMA.UA.EDU
Subject: Re: DFSMSdss DOC APAR OA20117 (was RE: HSM Missing
Member from Recalled Dataset -- Update
I hope that you will be trying to convince your management to
send this to your IBM sales representative or higher.
Incidentally how does Innovation's FDR handle this?
On 31 Mar 2007 13:24:05 -0700, in bit.listserv.ibm-main you wrote:
Good Lord!
What idiot could have thought this counter-intuitive behavior is a
reasonable default:
"When restoring data in a full volume or tracks operation,
DFSMSdss resets the data-set-changed indicator
in the VTOC entries of each data set that has had its data
restored. This is to indicate that the data set has not changed
since its last backup."
...
--
Joel C. Ewing, Fort Smith, AR [EMAIL PROTECTED]
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