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https://issues.apache.org/jira/browse/DERBY-5051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13001051#comment-13001051
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Kim Haase commented on DERBY-5051:
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Thanks for the explanation, Kristian. But uh-oh, I don't think we document the
new index statistics feature -- not yet anyway. I don't see a doc issue for the
derby.storage.indexStats.log property. Should there be one? Is documentation
needed elsewhere too?
> Update the docs to include the additional information available in derby.log.
> This information will be useful from product supportability stand point
> -----------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-5051
> URL: https://issues.apache.org/jira/browse/DERBY-5051
> Project: Derby
> Issue Type: Improvement
> Components: Documentation
> Affects Versions: 10.8.0.0
> Reporter: Mamta A. Satoor
> Assignee: Kim Haase
>
> With DERBY-4853, we log additional information in derby.log to make it easier
> for the support group to work with customer problems.
> Following 2 additional properties will now always be put in derby.log (every
> time a database is booted)
> user.dir
> derby.system.home
> user.dir is the system property which gives the user working directory.
> If the user has not specified derby,system.home, then Derby will look for
> optional derby.properties file in user.dir . If user has provided
> derby.system.home, then the optional derby.properties will be looked in
> derby.system.home rather than user.dir
> If user has not provided derby.system.home, then a sample of the 2 properties
> on derby.log looks as follows on my machine
> user.dir=C:\p4clients\svnmain\client2\trunk\systest\out142
> derby.system.home=null
> If user has set derby.system.home to c:./temp, then a sample of the 2
> properties on derby.log looks as follows on my machine
> user.dir=C:\p4clients\svnmain\client2\trunk\systest\out142
> derby.system.home=c:/temp
> In addition to the above 2 properties, there can be following 3 optional
> properties in the log (following the 2 properties mentioned above)
> derby.stream.error.file
> derby.stream.error.method
> derby.stream.error.field
> The above 3 properties provide a way to alter where error messages get logged
> rather than tranditional derby.log file. In the absence of the above 3
> optional properties, the location of derby.log follows the same logic as
> derby.properties. But if the user has set any or all of the 3 optional
> properties, then derby.log will not be in same location as derby.properties.
> In the Derby code, derby.stream.error.file takes precedence over the other 2
> properties and derby.stream.error.method take precedence over the last
> property.
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