Re: Logon during night backup on tape

Don,

The major problem with "Save-While-Active" is ensuring that the
transactions are synchronized during the backup. For example, suppose
you have a program that saves a particular transaction in three
different files (and records). It could happen that your backup saves
FILE1 sans RECORD1 and, after that, your app runs and writes the three
records. A short time later, your backup saves FILE2 and FILE3. At
that moment, your backup data is inconsistent.

You have to establish sync-points for your backup. It can be done, but
it is not trivial. Also, using journals and commits do help a lot.
Check the SAVACT(*LIB) or SAVACT(*SYNCLIB) options.

HTH,


Luis Rodriguez
IBM Certified Systems Expert -- eServer i5 iSeries



2009/11/13 Don Cavaiani <dcavaiani@xxxxxxxxxxxxx>:

Due to a real-time Shop Floor Control 3-shift program we will have in effect next year, I may have to change to a "save-while-active" option. Are there any issues to be aware of with that?

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Paul Nelson
Sent: Friday, November 13, 2009 6:34 AM
To: 'Midrange Systems Technical Discussion'
Subject: RE: Logon during night backup on tape

Agreed. This will get rid of those ODBC connections, also.

Paul Nelson
Office 512-392-2577
Cell 708-670-6978
nelsonp@xxxxxxxxxxxxx


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of jmmckee
Sent: Friday, November 13, 2009 6:12 AM
To: Midrange Systems Technical Discussion
Subject: Re: Logon during night backup on tape

ENDSBS *ALL

John McKee

-----Original message-----
From: Tomasz Skorża t.skorza@xxxxxxxxxxx
Date: Fri, 13 Nov 2009 04:26:43 -0600
To: midrange-l@xxxxxxxxxxxx
Subject: Logon during night backup on tape

Hi

How you prevent user to log on into system during night backup on tape?
If ending subsystem QIINTER (and starting after backup is finished) is
good solution? How do you make it on your system?

--
Pozdrawiam

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Tomasz Skorża
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