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Posted to log4j-dev@logging.apache.org by "Tihomir Meščić (JIRA)" <ji...@apache.org> on 2013/11/29 14:13:35 UTC
[jira] [Created] (LOG4J2-457) JDBCAppender does not release JDBC
connections to the connection pool when WAR/EAR is stopped
Tihomir Meščić created LOG4J2-457:
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Summary: 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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