Re: Hot backup question

From: Yong Huang <>
Date: Sat, 25 Sep 2010 20:00:04 -0700 (PDT)
Message-ID: <>

  • On Sat, 9/25/10, Yong Huang <> wrote: ...
    > example to explain split blocks. I think there's still a
    > danger unless DBWn and OS tool can write and read,
    > respectively, to the same block at the same moment. But it's

Correction. "unless" should be "if" or "as long as".

By the way, these two pages talk about the possibility of turning off _log_blocks_during_backup during backup. If anybody really wants to do it (possibly invalidating support), I would add that after backup, run dbv on the backed-up file to see if you get any influx block. It would be nice to run dbv on a file that is being created (if it could accept input from a pipe). But with all that hassle, it would be easier to use RMAN instead of simulating it.

Yong Huang       

Received on Sat Sep 25 2010 - 22:00:04 CDT

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