<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="error">
  <Appenders>
    <JDBC name="databaseAppender" tableName="dbo.application_log">
      <DataSource jndiName="java:/comp/env/jdbc/LoggingDataSource" />
      <Column name="eventDate" isEventTimestamp="true" />
      <Column name="level" pattern="%level" />
      <Column name="logger" pattern="%logger" />
      <Column name="message" pattern="%message" />
      <Column name="exception" pattern="%ex{full}" />
    </JDBC>
  </Appenders>
  <Loggers>
    <Root level="warn">
      <AppenderRef ref="databaseAppender"/>
    </Root>
  </Loggers>
</Configuration>

<?xml version="1.0" encoding="UTF-8"?>
<Configuration>
   <Appenders>
      <JDBC name="SQLServerAppender" tableName="dbo.LogEntry">
         <DataSource jndiName="jdbc:sqlserver://MyMachine\MyInstance:1433;databaseName=LoggingDB;applicationName=myappname;integratedSecurity=true;" />
         <Column name="EntryDateUtc" isEventTimestamp="true" />
         <Column name="LOGGER" pattern="%C" />
         <Column name="Level" pattern="%level" />
         <Column name="Message" pattern="%m" />
         <Column name="UserName" pattern="%x" />
         <Column name="Priority" pattern="%p" />
         <Column name="ElapsedMilliseconds" pattern="%r" />
         <Column name="ThreadName" pattern="%t" />
         <Column name="ThrowableMessage" pattern="%throwable " />
      </JDBC>

ERROR No ConnectionSource provided: connectionSource
ERROR Could not create plugin of type class org.apache.logging.log4j.core.appender.db.jdbc.JdbcAppender for element JDBC org.apache.logging.log4j.core.config.ConfigurationException: Arguments given for element JDBC are invalid: field 'connectionSource' has invalid value 'null'

<Appenders>
      <JDBC name="SQLServerAppender" tableName="dbo.LogEntry">

         <ConnectionSource jndiName="jdbc:sqlserver