Re: OID Perfomance - Object-Relational databases
| От | Bruce Momjian |
|---|---|
| Тема | Re: OID Perfomance - Object-Relational databases |
| Дата | |
| Msg-id | 200010091919.PAA11482@candle.pha.pa.us обсуждение |
| Ответ на | Re: OID Perfomance - Object-Relational databases ("Josh Berkus" <josh@agliodbs.com>) |
| Список | 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@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
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