Re: oid wraparound
От | Hubert Fröhlich |
---|---|
Тема | Re: oid wraparound |
Дата | |
Msg-id | 426F2E7A.4030700@bvv.bayern.de обсуждение исходный текст |
Ответ на | Re: oid wraparound (Neil Conway <neilc@samurai.com>) |
Список | pgsql-general |
Thanks, Neil. > Hubert Fröhlich wrote: > >> Those days, we had PostgreSQL 7.1 and 7.2, and we had to be careful >> oids approaching 2^32 (2.14 billion) >> >> Now, we have 8.0. What does the situation look like? > > > With the default settings, there is exactly the same risk of OID > wraparound as in earlier releases. However, you can set the > "default_with_oids" configuration parameter to false to significantly > reduce OID consumption, to the point that you probably won't need to > worry about it. It will mean that tables will not have OIDs by default, > so you should specify WITH OIDS when creating tables that need OIDs if > necessary (although think twice before doing this, as there are only a > few good reasons to use OIDs in user tables). What good reasons to use OIDs in user tables are still left? * For speeding up some special types of queries? -- Mit freundlichen Grüßen / With kind regards Hubert Fröhlich ------------------------------------------------------------------------------- Dr.-Ing. Hubert Fröhlich Bezirksfinanzdirektion München Alexandrastr. 3, D-80538 München, GERMANY Tel. :+49 (0)89 / 2190 - 2980 Fax :+49 (0)89 / 2190 - 2997 hubert dot froehlich at bvv dot bayern dot de
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