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Re: PG and undo logging - Mailing list pgsql-general

From David G. Johnston
Subject Re: PG and undo logging
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Msg-id CAKFQuwaPih3_bi1MFMPPf_fNMnDLPbt0iw0JqJM-8FBPP8hkJg@mail.gmail.com
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In response to PG and undo logging  (Ravi Krishna <sravikrishna3@gmail.com>)
Responses Re: PG and undo logging  (Jan de Visser <jan@de-visser.net>)
Re: PG and undo logging  (Ravi Krishna <sravikrishna3@gmail.com>)
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On Sat, May 23, 2015 at 1:34 PM, Ravi Krishna <sravikrishna3@gmail.com> wrote:
Is it true that PG does not log undo information, only redo. If true,
then how does it bring a database back to consistent state during
crash recovery. Just curious.

​What does "undo" mean?

David J.​
 

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