Er, right.... I guess I should have asked if it's more likely to commit a
running transaction than a prepared one.... and it sounds like the answer
is "no". :)
On Thu, 19 Jul 2007, Tom Lane wrote:
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
