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Posted to derby-dev@db.apache.org by "Kathey Marsden (Updated) (JIRA)" <ji...@apache.org> on 2012/04/18 20:10:40 UTC

[jira] [Updated] (DERBY-5691) Document that Write Caching must be disabled to avoid possible database corruption

     [ https://issues.apache.org/jira/browse/DERBY-5691?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kathey Marsden updated DERBY-5691:
----------------------------------

    Summary: Document that  Write Caching  must be disabled to avoid possible database corruption  (was: Recommend disabling Write Caching  for on Windows)
    
> Document that  Write Caching  must be disabled to avoid possible database corruption
> ------------------------------------------------------------------------------------
>
>                 Key: DERBY-5691
>                 URL: https://issues.apache.org/jira/browse/DERBY-5691
>             Project: Derby
>          Issue Type: Improvement
>          Components: Documentation
>         Environment: Microsoft Windows
>            Reporter: Stan Bradbury
>              Labels: Write_caching
>
> Suggestion that we document a recommendation that Windows Write Caching be disabled on machines using Derby.
> The following article warns about Write Caching on Windows as a possbile source of database corruption:
>      http://support.microsoft.com/kb/281672
> It is possible that this could be the cause of some unexplained Derby corruptions identified after power failure of other system interupt.
> Links explaining how to disable Write Caching:
>   Win 2K: http://support.microsoft.com/kb/259716
>    Win 2008: http://support.microsoft.com/kb/324805
> From the Windows 2008 article:
> With some third-party programs, disk write caching has to be turned on or off. Additionally, turning disk write caching on may increase operating system performance; however, it may also result in the loss of information if a power failure, equipment failure, or software failure occurs. This article describes how to turn disk write caching on or off.

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