Re: is it true.... a journal entry will only be made when data actually changes...

[Charles Wilt <charles.wilt@xxxxxxxxx>]

Don't know about documentation...

But I can say that IBM's Mark Anderson told me personally
"A long long time ago we decided that if  an update was being performed but
nothing changed that we would bypass the
journal entry in the interest of performance (especially if journal
entries were
being sent to a backup system using logical replication)."

In my case, we noticed that AFTER triggers were be fired with no
corresponding journal entries.

HTH,

Charles

On Thu, Jun 27, 2019 at 10:11 AM Gerald Magnuson <gmagqcy.midrange@xxxxxxxxx>
wrote:

> I have a programmer reviewing a list of journal entries...  a program
> appears to be performing a update on _all_ records, but not all records
> appear in the journal...
>
> I thought I read somewhere that the journal will only contain entries for
> rows that had _actual_ column changes...    is this correct?    can someone
> point me to the document that states this?
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