Re: [ADMIN] Re: [SQL] Data recovery
От | Bruce Momjian |
---|---|
Тема | Re: [ADMIN] Re: [SQL] Data recovery |
Дата | |
Msg-id | 199906011917.PAA04373@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: [ADMIN] Re: [SQL] Data recovery (wieck@debis.com (Jan Wieck)) |
Список | pgsql-sql |
> > Very, very hard, but not impossible. If you update a row, and do a > > select on that row, the select updates the transaction status so the > > next select doesn't need to look at the pg_log table. What this means > > is that pg_log could probably be reconstructed from existing data, with > > just 'unselected' changes not appearing properly. > > So at the end you have some data that you cannot trust. I > don't think that's worth the efford. Yes. True. It is just a point that came up recently when Tom found the first select on a table slow. -- Bruce Momjian | http://www.op.net/~candle maillist@candle.pha.pa.us | (610) 853-3000 + If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania 19026
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