Re: PITR - recovery to a particular transaction

Rod Taylor wrote:
> > You seem to be suggesting that using the id is less useful than the
> > time, but surely it's going to be easier to say "this disaster happened
> > in transaction 123 so lets do a PITR up to 122" than to say "this
> 
> Transaction IDs are assigned at transaction start but what you really
> want is some indicator of when the commit occurred.
> 
> Transaction 123 may have committed while 122 was still running.

True.  In fact this brings up a problem of using the xid for recovery
stop.  The interesting point is that you might recover to just before
xact 123, but that doesn't mean you get xact 122.

Still I think we need to add xid to the log_line_prefix for PITR and
make it clear that specifying a recovery xid doesn't always include
earlier xids.  I have added this to the open items list.

--  Bruce Momjian                        |  http://candle.pha.pa.us pgman@candle.pha.pa.us               |  (610)
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