mysql-connector-java-x.x.x.jar 複製到 server/default/lib(自動加入 CLASSPATH)。cp docs/examples/jca/mysql-ds.xml server/default/deploy/mysql-ds.xml:<driver-class>com.mysql.jdbc.Driver</driver-class><connection-url>jdbc:mysql://<mysqlhost>/<database></connection-url>cp docs/examples/jms/mysql-jdbc2-service.xml server/default/deploy/jms/hsqldb-jdbc2-service.xml。default/conf/standardjaws.xml:<datasource>java:/MySqlDS</datasource><type-mapping>MySQL</type-mapping>standardjbosscmp-jdbc.xml:<datasource>java:/MySqlDS</datasource><datasource-mapping>MySQL</datasource-mapping>login-config.xml:<application-policy name="MySqlDbRealm"> ... <module-option name="managedConnectionFactoryName">jboss.jca:service=LocalTxCM,name=MySQLDS</module-option>server/default/deploy/ejb-deployer.xml,將 TIMERS 表中 INSTANCEPK other, INFO other 改為 BLOB 類型(MySQL 不支援 OTHER)。完成上述配置,JBoss 預設資料源即切換為 MySQL。