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https://issues.apache.org/jira/browse/DERBY-5691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13281574#comment-13281574
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Kim Haase commented on DERBY-5691:
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Thanks very much, Kathey. I'll commit this patch, then. We can reopen this
issue or file another one based on the DERBY-5778 findings. I also look forward
to the checksum issue you will be filing. Looks as if this new topic will be in
flux for future releases (including bug-fix ones) as we learn more.
> 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
> Assignee: Kim Haase
> Labels: Write_caching
> Fix For: 10.8.2.3, 10.9.0.0
>
> Attachments: DERBY-5691-2.diff, DERBY-5691-2.stat, DERBY-5691-2.zip,
> DERBY-5691-3.diff, DERBY-5691-3.zip, DERBY-5691-4.diff, DERBY-5691-4.zip,
> DERBY-5691-5.diff, DERBY-5691-5.zip, DERBY-5691-6.diff, DERBY-5691-6.stat,
> DERBY-5691.diff, DERBY-5691.stat, DERBY-5691.zip, cadmindbintegrity.html
>
>
> 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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