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https://issues.apache.org/jira/browse/DBCP-427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14651254#comment-14651254
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Phil Steitz commented on DBCP-427:
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I agree that the default should be changed. We can't do this in a patch
release, though; so pushing to 2.2.
> 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: 2.2
>
> 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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