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https://issues.apache.org/jira/browse/LOG4J2-407?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13889216#comment-13889216
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Matt Sicker commented on LOG4J2-407:
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One possibility would be to use Commons Pool for pooling Connection objects.
It's no good to keep closing connection objects from what I recall.
> JDBCAppender cannot recover from loss of database connectivity
> --------------------------------------------------------------
>
> Key: LOG4J2-407
> URL: https://issues.apache.org/jira/browse/LOG4J2-407
> Project: Log4j 2
> Issue Type: Bug
> Components: Appenders
> Affects Versions: 2.0-beta9
> Reporter: Michael Kloster
> Assignee: Nick Williams
>
> The JDBCAppender holds a single database connection for all its logging. If
> that database connection is closed, it does not attempt to make a new
> connection.
> Many connection pools automatically close connections after a certain amount
> of inactivity. (This can be worked around by properly configuring a pool).
> Database connectivity issues are also common enough that a long running
> application may experience temporary network issues. When the network comes
> back online, the logging will not resume.
> I've been meaning to submit a patch for this, but I haven't gotten to it.
> Since I saw that you are looking to come out of beta soon, I thought I would
> log this issue in case someone else has time to write the patch before I get
> to it.
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