Is this a TODO? ---------------------------------------------------------------------------
Greg Stark wrote: > > Tom Lane <[EMAIL PROTECTED]> writes: > > > I suppose it might be useful to have some kind of "suspended animation" > > behavior where you could bring up a backend and look at the database in > > a strict read-only fashion, not really executing transactions at all, > > just to see what you had. Then you could end the recovery and go to > > normal operations, or allow the recovery to proceed further if you > > decided this wasn't where you wanted to be yet. However that would > > require a great deal of mechanism we haven't got (yet). In particular > > there is no such thing as strict read-only examination of the database. > > That would be a great thing to have one day for other reasons aside from the > ability to test out a recovered database. It makes warm standby databases much > more useful. > > A warm standby is when you keep a second machine constantly up to date by > applying the archived PITR logs as soon as they come off your server. You're > ready to switch over at the drop of a hat and don't have to go through the > whole recovery process, you just switch the database from recovery mode to > active mode and make it your primary database. But in the until then the > backup hardware languishes, completely useless. > > Oracle has had a feature for a long time that you can actually open the > standby database in a strict read-only mode and run queries. This is great for > a data warehouse situation where you want to run long batch jobs against > recent data. > > -- > greg > > > ---------------------------(end of broadcast)--------------------------- > TIP 7: don't forget to increase your free space map settings > -- Bruce Momjian | http://candle.pha.pa.us [EMAIL PROTECTED] | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073 ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
