On 2010-Oct-18 17:45:34 +0800, "casper....@sun.com" <casper....@sun.com> wrote:
>         Write-lock  (wlock)  the  specified  file-system.  wlock
>         suspends  writes  that  would  modify  the  file system.
>         Access times are not kept while a file system is  write-
>         locked.
>
>
>All the applications trying to write will suspend.  What would be the
>risk of that?

At least some versions of Oracle rdbms have timeouts around I/O and
will abort if I/O operations don't complete within a short period.

-- 
Peter Jeremy

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