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JDBCAppender Log4j Help!

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Howdy all,
I'm trying to use the JDBCAppender that is supplied by the Log4j package to collect log entries in a db (naturally). However, I haven't come across a good example of the log4j.xml that shows what I need to create an appender of the JDBC variety. Everything looks right but since nothing seems to be happening I'm assuming that I've messed something up.
here's the appender snippet I'm using:
<appender name="JDBC" class="org.apache.log4j.jdbc.JDBCAppender">

<param name="url" value="jdbc:mysql://localhost/logs" />
<param name="user" value="test" />
<param name="password" value="test" />

<param name="sql" value="INSERT INTO LOG (log_dt, log_level, msg) VALUES ('test', 'test', 'test')" />
<param name="driver" value="com.mysql.jdbc.Driver" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%m" />
I then have the category entry as follows:
<category name="com.myclasses">
<priority value="DEBUG" />
<appender-ref ref="JDBC" />
Nothing is getting inserted into the database, but I can't find any errors in the server logs. I'm using Log4j 1.2.7 with JBoss.
Any ideas?
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