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From "Stan Bradbury (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DERBY-5691) Recommend disabling Write Caching for on Windows
Date Mon, 16 Apr 2012 21:02:16 GMT
Recommend disabling Write Caching  for on Windows
-------------------------------------------------

                 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


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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