Ben <bench@xxxxxxxxxxxxxxx> writes: > I'm reading the description of PREPARE TRANSACTION, and I see this: > "...its state is fully stored on disk, and there is a very high > probability that it can be committed successfully..." > What corner case reduces 2pc from "guaranteed" to "very high probability"? Well, for example, someone drops a nuke on your data center ... Barring hardware failure, OS failure, or irrecoverable database crash, the only condition I can think of that would prevent COMMIT PREPARED from succeeding is out-of-disk-space on the WAL drive. Which is a PANIC condition anyway, and thus might be classed with database crashes, although it's not irrecoverable so long as the admin can free up some disk space. regards, tom lane
