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https://issues.apache.org/jira/browse/LOG4J2-457?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13892766#comment-13892766
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Gary Gregory commented on LOG4J2-457:
-------------------------------------
Commons DBCP 2 is around the corner FYI.
> JDBCAppender does not release JDBC connections to the connection pool when
> WAR/EAR is stopped
> ---------------------------------------------------------------------------------------------
>
> Key: LOG4J2-457
> URL: https://issues.apache.org/jira/browse/LOG4J2-457
> Project: Log4j 2
> Issue Type: Bug
> Components: Appenders
> Affects Versions: 2.0-beta9
> Environment: JBOSS application server, PostgreSQL database
> Reporter: Tihomir Meščić
>
> We use log4j 2 for logging inside our J2EE app (packaged as EAR, log4j JARs
> are bundled inside). The app is deployed on JBOSS EAP 6.1 app server. We are
> using the JDBCAppender for logging to a PostgreSQL database, and the appender
> is configured to use a DataSource for fetching connections. The appender is
> configured as follows:
> <JDBC name="jdbcAppender" tableName="log_entries">
> <DataSource jndiName="java:jboss/datasources/XyzDS" />
> <Column name="log_entries_message" isUnicode="false" pattern="%message"
> />
> <Column name="log_entries_type" literal="0" />
> .....
> The problem is: after the EAR is stopped (undeployed) log4j is not releasing
> the JDBC connection back to the connection pool, and after we stop/start the
> application a couple of times, our server becomes useless because there are
> no more free connections in the connection pool. I've looked at the thread
> dump of the server and there are a lot of threads like this:
> org.apache.logging.log4j.core.LoggerContext$ShutdownThread @ 0xbe447138
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