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From "Kim Haase (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-5051) Update the docs to include the additional information available in derby.log. This information will be useful from product supportability stand point
Date Wed, 09 Mar 2011 23:40:59 GMT

    [ https://issues.apache.org/jira/browse/DERBY-5051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13004876#comment-13004876
] 

Kim Haase commented on DERBY-5051:
----------------------------------

Thanks, Mamta. 

We have a couple of simple examples of the derby log but none showing a redirect. The problem
is that I have to update them every release, so the more examples we add, the more work this
task requires. We show the new output that is there by default now. If you have an example
that shows the relevant output with one of those property settings, please add it to this
issue and maybe I could add it to the reference manual topic for that property. If we used
just a snippet showing the user.dir and derby.system.home settings along with the derby.stream....
property, it would not need to change with each release.

In the meantime I'll commit this patch.

> 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-5051-2.diff, DERBY-5051-2.stat, DERBY-5051-2.zip, 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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