Re: Humor me: Postgresql vs. MySql (esp. licensing)
От
Bruce Momjian
Тема
Re: Humor me: Postgresql vs. MySql (esp. licensing)
Дата
Msg-id
200310102005.h9AK5Xx08938@candle.pha.pa.us
Ответ на
Re: Humor me: Postgresql vs. MySql (esp. licensing) (Vivek Khera)
Список
Дерево обсуждения
Re: Humor me: Postgresql vs. MySql (esp. licensing) "Randolf Richardson, DevNet SysOp 29" <rr@8x.ca>
Vivek Khera wrote: > >>>>> "sm" == 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. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073
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