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【步骤一】
在MySQL数据库中建立三个数据库ofbiz、ofbizolap、ofbiztenant，统一全部常用UTF-8编码
【步骤二】
打开实体引擎配置文件
/framework/entity/config/entityengine.xml
修改datasource、delegator 节点
添加以下数据源：
<datasource name="localmysql" helper-class="org.ofbiz.entity.datasource.GenericHelperDAO" field-type-name="mysql" check-on-start="true" add-missing-on-start="true" check-pks-on-start="false" use-foreign-keys="true" join-style="ansi-no-parenthesis" alias-view-columns="false" drop-fk-use-foreign-key-keyword="true" table-type="InnoDB" character-set="utf8" collate="utf8_general_ci"> <read-data reader-name="tenant"/> <read-data reader-name="seed"/> <read-data reader-name="seed-initial"/> <read-data reader-name="demo"/> <read-data reader-name="ext"/> <read-data reader-name="ext-test"/> <read-data reader-name="ext-demo"/> <inline-jdbc jdbc-driver="com.mysql.jdbc.Driver" jdbc-uri="jdbc:mysql://localhost/ofbiz?autoReconnect=true" jdbc-username="root" jdbc-password="root" isolation-level="ReadCommitted" pool-minsize="2" pool-maxsize="250" time-between-eviction-runs-millis="600000"/><!-- Please note that at least one person has experienced a problem with this value with MySQL and had to set it to -1 in order to avoid this issue. For more look at http://markmail.org/thread/5sivpykv7xkl66px and http://commons.apache.org/dbcp/configuration.html--> <!-- <jndi-jdbc jndi-server-name="localjndi" jndi-name="java:/MySqlDataSource" isolation-level="Serializable"/> --> </datasource> <datasource name="localmysqlolap" helper-class="org.ofbiz.entity.datasource.GenericHelperDAO" field-type-name="mysql" check-on-start="true" add-missing-on-start="true" check-pks-on-start="false" use-foreign-keys="true" join-style="ansi-no-parenthesis" alias-view-columns="false" drop-fk-use-foreign-key-keyword="true" table-type="InnoDB" character-set="utf8" collate="utf8_general_ci"> <read-data reader-name="tenant"/> <read-data reader-name="seed"/> <read-data reader-name="seed-initial"/> <read-data reader-name="demo"/> <read-data reader-name="ext"/> <read-data reader-name="ext-test"/> <read-data reader-name="ext-demo"/> <inline-jdbc jdbc-driver="com.mysql.jdbc.Driver" jdbc-uri="jdbc:mysql://localhost/ofbizolap?autoReconnect=true" jdbc-username="root" jdbc-password="root" isolation-level="ReadCommitted" pool-minsize="2" pool-maxsize="250" time-between-eviction-runs-millis="600000"/><!-- Please note that at least one person has experienced a problem with this value with MySQL and had to set it to -1 in order to avoid this issue. For more look at http://markmail.org/thread/5sivpykv7xkl66px and http://commons.apache.org/dbcp/configuration.html--> <!-- <jndi-jdbc jndi-server-name="localjndi" jndi-name="java:/MySqlDataSource" isolation-level="Serializable"/> --> </datasource> <datasource name="localmysqltenant" helper-class="org.ofbiz.entity.datasource.GenericHelperDAO" field-type-name="mysql" check-on-start="true" add-missing-on-start="true" check-pks-on-start="false" use-foreign-keys="true" join-style="ansi-no-parenthesis" alias-view-columns="false" drop-fk-use-foreign-key-keyword="true" table-type="InnoDB" character-set="utf8" collate="utf8_general_ci"> <read-data reader-name="tenant"/> <read-data reader-name="seed"/> <read-data reader-name="seed-initial"/> <read-data reader-name="demo"/> <read-data reader-name="ext"/> <read-data reader-name="ext-test"/> <read-data reader-name="ext-demo"/> <inline-jdbc jdbc-driver="com.mysql.jdbc.Driver" jdbc-uri="jdbc:mysql://localhost/ofbiztenant?autoReconnect=true" jdbc-username="root" jdbc-password="root" isolation-level="ReadCommitted" pool-minsize="2" pool-maxsize="250" time-between-eviction-runs-millis="600000"/><!-- Please note that at least one person has experienced a problem with this value with MySQL and had to set it to -1 in order to avoid this issue. For more look at http://markmail.org/thread/5sivpykv7xkl66px and http://commons.apache.org/dbcp/configuration.html--> <!-- <jndi-jdbc jndi-server-name="localjndi" jndi-name="java:/MySqlDataSource" isolation-level="Serializable"/> --> </datasource>
将数据源从默认的derby切换至MySQL
<delegator name="default" entity-model-reader="main" entity-group-reader="main" entity-eca-reader="main" distributed-cache-clear-enabled="false"> <group-map group-name="org.ofbiz" datasource-name="localmysql"/> <group-map group-name="org.ofbiz.olap" datasource-name="localmysqlolap"/> <group-map group-name="org.ofbiz.tenant" datasource-name="localmysqltenant"/> </delegator> <delegator name="default-no-eca" entity-model-reader="main" entity-group-reader="main" entity-eca-reader="main" entity-eca-enabled="false" distributed-cache-clear-enabled="false"> <group-map group-name="org.ofbiz" datasource-name="localmysql"/> <group-map group-name="org.ofbiz.olap" datasource-name="localmysqlolap"/> <group-map group-name="org.ofbiz.tenant" datasource-name="localmysqltenant"/> </delegator> <delegator name="test" entity-model-reader="main" entity-group-reader="main" entity-eca-reader="main"> <group-map group-name="org.ofbiz" datasource-name="localmysql"/> <group-map group-name="org.ofbiz.olap" datasource-name="localmysqlolap"/> <group-map group-name="org.ofbiz.tenant" datasource-name="localmysqltenant"/> </delegator>
保存，重新用ant运行，则成功切换至MySQL
【参考】
https://cwiki.apache.org/confluence/display/OFBIZ/How+to+migrate+OfBiz+from+Derby+to+MySQL+database
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原文地址：http://my.oschina.net/wumian/blog/383675
