Chris Travers написа: > Scott Marlowe wrote: > >> On Tue, 2006-03-28 at 19:47, sh test wrote: >> >> >>> Hello admins! >>> >>> i need to collect as much information >>> >>> pro/cons on a possible upgrade from >>> >>> 7.4 ---> 8.0/8.1 version >>> >>> Aside from getting our users vote on this, I wanted to ask you first >>> in order to collect any possible issues one might run into from >>> upgrading to such >>> versions. >>> >> >> Downside: You gotta dump and reload, or use slony to minimize the >> downtime, but you need a spare machine to do that. >> Upside: Everything else. PostgreSQL 8.x series has a lot of >> performance improvements. >> >> > When I upgraded from 7.4.2 to 8.1.3, I lost the oid fields in some > tables which caused some issues with one application. Probably because in 8.1 the value for the "default_with_oids" parameter is "false". If you had tried to set it to "true" (at least for duration of the restore) then you would have not lost those OIDs. > > I suspect that the better path is to upgrade (without dump/reload) to > the most recent 7.4 release and then dump/reload when upgrading to 8.1.x > but I am not 100% sure. > > If you don't WANT OID's in your table (they were dropped for a reason, > you know), then this is not a concern. -- Milen A. Radev
