Re: Humor me: Postgresql vs. MySql (esp. licensing)

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От Bruce Momjian
Тема Re: Humor me: Postgresql vs. MySql (esp. licensing)
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Msg-id 200310102005.h9AK5Xx08938@candle.pha.pa.us
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Ответ на Re: Humor me: Postgresql vs. MySql (esp. licensing)  (Vivek Khera <khera@kcilink.com>)
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Vivek Khera wrote:
> >>>>> "sm" == scott marlowe <scott.marlowe> writes:
>
> >> will ungracefully kill the DB process(es).  Doesn't matter what DB (or
> >> any other application) you're running, you *can* lose data this way.
>
> sm> While it is possible to lose a non-committed transaction, WAL prevents the
> sm> database from becoming corrupted.  Assuming proper fsyncing of your hard
> sm> drives (i.e. SCSI, or IDE with write cache disabled)
>
> So you're saying it is not possible to corrupt the WAL if the process
> is ungracefully killed by the OS?

Yes, it is impossible, even if the OS crashes too.

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