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From "Gerhard Kersten (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DBCP-263) Use a queryTimeout for the validationQuery in PoolableConnectionFactory
Date Mon, 14 Apr 2008 10:19:08 GMT

    [ https://issues.apache.org/jira/browse/DBCP-263?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12588536#action_12588536
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Gerhard Kersten commented on DBCP-263:
--------------------------------------

For us it's the same, and it's really mission-critical. 

Background: A firewall cuts a TCP connection after some time, but does not close it. With
"validationQuery" dbcp waits forever for the validation query, making this feature completely
useless.

For a proposal see: http://www.mail-archive.com/commons-dev@jakarta.apache.org/msg92474.html

> Use a queryTimeout for the validationQuery in PoolableConnectionFactory
> -----------------------------------------------------------------------
>
>                 Key: DBCP-263
>                 URL: https://issues.apache.org/jira/browse/DBCP-263
>             Project: Commons Dbcp
>          Issue Type: Improvement
>    Affects Versions: 1.2, 1.2.1, 1.2.2
>            Reporter: Christoph Grothaus
>            Priority: Minor
>   Original Estimate: 0.5h
>  Remaining Estimate: 0.5h
>
> PoolableConnectionFactory.validateConnection(Connection conn) should use java.sql.Statement.setQueryTimeout(int)
to avoid network problems and inappropriate validation queries. The timeout should either
be a sensible default (say 5 secs) or be configurable.
> Links:
> - http://svn.apache.org/viewvc/commons/proper/dbcp/trunk/src/java/org/apache/commons/dbcp/PoolableConnectionFactory.java?view=markup
> - http://java.sun.com/j2se/1.5.0/docs/api/java/sql/Statement.html#setQueryTimeout(int)

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