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https://issues.apache.org/jira/browse/DBCP-427?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gary Gregory closed DBCP-427.
-----------------------------
       Resolution: Fixed
    Fix Version/s: 2.5.0

In git master.

> Examines 'SQLException's thrown by underlying connections or statements for 
> fatal (disconnection) errors
> --------------------------------------------------------------------------------------------------------
>
>                 Key: DBCP-427
>                 URL: https://issues.apache.org/jira/browse/DBCP-427
>             Project: Commons DBCP
>          Issue Type: Improvement
>    Affects Versions: 2.0
>            Reporter: Vladimir Konkov
>            Priority: Minor
>             Fix For: 2.4.1, 2.5.0
>
>         Attachments: DBCP-427_initial_impl.diff
>
>
> Affected cases:
> 1. Ability to detect severed connection without need for validity check (it 
> can be time demand).
> 2. Not all fatal errors detected with simple validation query or isValid() 
> call. For example: 
> Broken XA connections of MS SQL Server and Oracle Database (and may be other) 
> pass validation for both isValid() and simple validation query such as 'SELEC 
> 1 FROM DUAL' but throw fatal errors on data and/or transaction manipulation 
> calls. Such errors gone only after reconnect. In case of use DBCP for polling 
> application has no chance to cleanup broken connection.
> By providing infractructure for check thrown exceptions and mark 
> PoolableConnection as poisoned we can cleanup pool on validation phase.



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