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Mamta A. Satoor commented on DERBY-5051:
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I was thinking that we should mention somewhere that if any(all) of following 3 properties
is set, it will be logged in derby.log. This info might be useful for support group when working
with a problem
derby.stream.error.file
derby.stream.error.method
derby.stream.error.field
> 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
> Fix For: 10.8.0.0
>
> Attachments: DERBY-5051.diff, DERBY-5051.stat, DERBY-5051.zip
>
>
> 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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