Helen Borrie wrote:

>At 11:34 AM 6/11/2004 -0500, you wrote:
>
>
>
>>It seems so simple and obvious I can't imagine why it hasn't been done.
>>Have I missed something?
>>
>>
>
>What happens with two-phase commits?
>
>
>

From the perspective of the cache and disk, the "prepare" phase of two
phase commit is indistiguishable from a commit -- the cache must be
flushed and the transaction state set, but to limbo, not committed. The
second phase is nothing more than change the transaction state on the
tip from limbo to committed.


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