From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | Josh Berkus <josh(at)agliodbs(dot)com> |
Cc: | pgsql-sql(at)postgresql(dot)org, jeff(at)pgsql(dot)com |
Subject: | Re: OID Perfomance - Object-Relational databases |
Date: | 2000-10-09 19:19:03 |
Message-ID: | 200010091919.PAA11482@candle.pha.pa.us |
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Thread: | |
Lists: | pgsql-sql |
[ Charset ISO-8859-1 unsupported, converting... ]
> Bruce, Tom, etc.:
>
> > > This is what I mean. Does the DB engine only recycle
> > > *unused* OIDs (that is, does it check for teh continued
> > > existance of a tuple with OID 198401)? If that's the
> > > method, then there isn't really a problem even if I do
> > use
> > > OIDs as a primary index. None of my OIDs still in use
> > will
> > > be touched.
> >
> >
> > No, it uses all oids, and can create duplicates.
>
> Does this mean that Tom's "Wraparound Ragnarok" is the
> accurate scenario?
Yes.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
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