diff --git a/lab-17/lab-17-dynamic-datasource-springdatajpa/src/main/java/cn/iocoder/springboot/lab17/dynamicdatasource/config/JpaOrdersConfig.java b/lab-17/lab-17-dynamic-datasource-springdatajpa/src/main/java/cn/iocoder/springboot/lab17/dynamicdatasource/config/JpaOrdersConfig.java
index 9a6fefc0..140c4dfc 100644
--- a/lab-17/lab-17-dynamic-datasource-springdatajpa/src/main/java/cn/iocoder/springboot/lab17/dynamicdatasource/config/JpaOrdersConfig.java
+++ b/lab-17/lab-17-dynamic-datasource-springdatajpa/src/main/java/cn/iocoder/springboot/lab17/dynamicdatasource/config/JpaOrdersConfig.java
@@ -17,8 +17,6 @@ import javax.sql.DataSource;
 import java.util.Map;
 
 @Configuration
-// @EnableTransactionManagement
-//@EnableConfigurationProperties(HibernateProperties.class)
 @EnableJpaRepositories(
         entityManagerFactoryRef = DBConstants.ENTITY_MANAGER_FACTORY_ORDERS,
         transactionManagerRef = DBConstants.TX_MANAGER_ORDERS,
@@ -33,7 +31,7 @@ public class JpaOrdersConfig {
      */
     @Bean(name = "ordersDataSource")
     @ConfigurationProperties(prefix = "spring.datasource.orders")
-    @Primary
+    @Primary // 需要特殊添加，否则初始化会有问题
     public DataSource dataSource() {
         return DataSourceBuilder.create().build();
     }
@@ -42,8 +40,7 @@ public class JpaOrdersConfig {
      * 创建 LocalContainerEntityManagerFactoryBean
      */
     @Bean(name = DBConstants.ENTITY_MANAGER_FACTORY_ORDERS)
-//    @Primary
-    public LocalContainerEntityManagerFactoryBean entityManagerFactoryPrimary(EntityManagerFactoryBuilder builder) {
+    public LocalContainerEntityManagerFactoryBean entityManagerFactory(EntityManagerFactoryBuilder builder) {
         return builder
                 .dataSource(this.dataSource()) // 数据源
                 .properties(hibernateVendorProperties) // 获取并注入 Hibernate Vendor 相关配置
@@ -52,22 +49,12 @@ public class JpaOrdersConfig {
                 .build();
     }
 
-//    /**
-//     * 创建 EntityManager
-//     */
-//    @Bean(name = "entityManagerPrimary")
-//    public EntityManager entityManager(EntityManagerFactoryBuilder builder) {
-//        return entityManagerFactoryPrimary(builder).getObject() // 获得 EntityManagerFactory 对象
-//                .createEntityManager(); // 创建 EntityManager 对象
-//    }
-
     /**
      * 创建 PlatformTransactionManager
      */
     @Bean(name = DBConstants.TX_MANAGER_ORDERS)
-//    @Primary
     public PlatformTransactionManager transactionManager(EntityManagerFactoryBuilder builder) {
-        return new JpaTransactionManager(entityManagerFactoryPrimary(builder).getObject());
+        return new JpaTransactionManager(entityManagerFactory(builder).getObject());
     }
 
 }
diff --git a/lab-17/lab-17-dynamic-datasource-springdatajpa/src/main/java/cn/iocoder/springboot/lab17/dynamicdatasource/config/JpaUsersConfig.java b/lab-17/lab-17-dynamic-datasource-springdatajpa/src/main/java/cn/iocoder/springboot/lab17/dynamicdatasource/config/JpaUsersConfig.java
index c572db3f..e62dcdcd 100644
--- a/lab-17/lab-17-dynamic-datasource-springdatajpa/src/main/java/cn/iocoder/springboot/lab17/dynamicdatasource/config/JpaUsersConfig.java
+++ b/lab-17/lab-17-dynamic-datasource-springdatajpa/src/main/java/cn/iocoder/springboot/lab17/dynamicdatasource/config/JpaUsersConfig.java
@@ -12,13 +12,10 @@ import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
 import org.springframework.transaction.PlatformTransactionManager;
 
 import javax.annotation.Resource;
-import javax.persistence.EntityManager;
 import javax.sql.DataSource;
 import java.util.Map;
 
 @Configuration
-// @EnableTransactionManagement
-//@EnableConfigurationProperties(HibernateProperties.class)
 @EnableJpaRepositories(
         entityManagerFactoryRef = DBConstants.ENTITY_MANAGER_FACTORY_USERS,
         transactionManagerRef = DBConstants.TX_MANAGER_USERS,
@@ -41,7 +38,7 @@ public class JpaUsersConfig {
      * 创建 LocalContainerEntityManagerFactoryBean
      */
     @Bean(name = DBConstants.ENTITY_MANAGER_FACTORY_USERS)
-    public LocalContainerEntityManagerFactoryBean entityManagerFactoryPrimary(EntityManagerFactoryBuilder builder) {
+    public LocalContainerEntityManagerFactoryBean entityManagerFactory(EntityManagerFactoryBuilder builder) {
         return builder
                 .dataSource(this.dataSource()) // 数据源
                 .properties(hibernateVendorProperties) // 获取并注入 Hibernate Vendor 相关配置
@@ -50,21 +47,12 @@ public class JpaUsersConfig {
                 .build();
     }
 
-    /**
-     * 创建 EntityManager
-     */
-    @Bean(name = "entityManagerSecondary")
-    public EntityManager entityManager(EntityManagerFactoryBuilder builder) {
-        return entityManagerFactoryPrimary(builder).getObject() // 获得 EntityManagerFactory 对象
-                .createEntityManager(); // 创建 EntityManager 对象
-    }
-
     /**
      * 创建 PlatformTransactionManager
      */
     @Bean(name = DBConstants.TX_MANAGER_USERS)
     public PlatformTransactionManager transactionManager(EntityManagerFactoryBuilder builder) {
-        return new JpaTransactionManager(entityManagerFactoryPrimary(builder).getObject());
+        return new JpaTransactionManager(entityManagerFactory(builder).getObject());
     }
 
 }