diff --git a/sqlhelper-examples/sqlhelper-examples-db/src/main/resources/test.h2.db b/sqlhelper-examples/sqlhelper-examples-db/src/main/resources/test.h2.db
index 183204b94..903205941 100644
Binary files a/sqlhelper-examples/sqlhelper-examples-db/src/main/resources/test.h2.db and b/sqlhelper-examples/sqlhelper-examples-db/src/main/resources/test.h2.db differ
diff --git a/sqlhelper-mybatis-spring-boot-starter/src/main/java/com/jn/sqlhelper/mybatis/spring/boot/autoconfigure/DynamicDataSourceTransactionFactoryCustomizer.java b/sqlhelper-mybatis-spring-boot-starter/src/main/java/com/jn/sqlhelper/mybatis/spring/boot/autoconfigure/DynamicDataSourceTransactionFactoryCustomizer.java
index e0d5427bb..d4562efd4 100644
--- a/sqlhelper-mybatis-spring-boot-starter/src/main/java/com/jn/sqlhelper/mybatis/spring/boot/autoconfigure/DynamicDataSourceTransactionFactoryCustomizer.java
+++ b/sqlhelper-mybatis-spring-boot-starter/src/main/java/com/jn/sqlhelper/mybatis/spring/boot/autoconfigure/DynamicDataSourceTransactionFactoryCustomizer.java
@@ -36,15 +36,20 @@ public class DynamicDataSourceTransactionFactoryCustomizer implements Configurat
     public void customize(Configuration configuration) {
         Environment oldEnv = configuration.getEnvironment();
         if (oldEnv != null) {
-            String id = oldEnv.getId();
-            DataSource dataSource = oldEnv.getDataSource();
-            if (dataSource instanceof NamedDataSource) {
-                id = ((NamedDataSource) dataSource).getDataSourceKey().getId();
-            }
 
-            TransactionFactory transactionFactory = new DynamicDataSourceManagedTransactionFactory();
-            Environment newEnv = new Environment(id, transactionFactory, dataSource);
-            configuration.setEnvironment(newEnv);
+            boolean replaceIt = oldEnv.getTransactionFactory() == null || !(oldEnv.getTransactionFactory() instanceof DynamicDataSourceManagedTransactionFactory);
+            if (replaceIt) {
+
+                String id = oldEnv.getId();
+                DataSource dataSource = oldEnv.getDataSource();
+                if (dataSource instanceof NamedDataSource) {
+                    id = ((NamedDataSource) dataSource).getDataSourceKey().getId();
+                }
+
+                TransactionFactory transactionFactory = new DynamicDataSourceManagedTransactionFactory();
+                Environment newEnv = new Environment(id, transactionFactory, dataSource);
+                configuration.setEnvironment(newEnv);
+            }
         }
     }
 }
diff --git a/sqlhelper-mybatisplus-spring-boot-starter/src/main/java/com/jn/sqlhelper/mybatisplus/spring/boot/autoconfigure/DynamicDataSourceTransactionFactoryCustomizer.java b/sqlhelper-mybatisplus-spring-boot-starter/src/main/java/com/jn/sqlhelper/mybatisplus/spring/boot/autoconfigure/DynamicDataSourceTransactionFactoryCustomizer.java
index 2a58d2dc1..a1f110991 100644
--- a/sqlhelper-mybatisplus-spring-boot-starter/src/main/java/com/jn/sqlhelper/mybatisplus/spring/boot/autoconfigure/DynamicDataSourceTransactionFactoryCustomizer.java
+++ b/sqlhelper-mybatisplus-spring-boot-starter/src/main/java/com/jn/sqlhelper/mybatisplus/spring/boot/autoconfigure/DynamicDataSourceTransactionFactoryCustomizer.java
@@ -39,15 +39,18 @@ public class DynamicDataSourceTransactionFactoryCustomizer implements Configurat
     public void customize(MybatisConfiguration configuration) {
         Environment oldEnv = configuration.getEnvironment();
         if (oldEnv != null) {
-            String id = oldEnv.getId();
-            DataSource dataSource = oldEnv.getDataSource();
-            if (dataSource instanceof NamedDataSource) {
-                id = ((NamedDataSource) dataSource).getDataSourceKey().getId();
-            }
+            boolean replaceIt = oldEnv.getTransactionFactory() == null || !(oldEnv.getTransactionFactory() instanceof DynamicDataSourceManagedTransactionFactory);
+            if(replaceIt) {
+                String id = oldEnv.getId();
+                DataSource dataSource = oldEnv.getDataSource();
+                if (dataSource instanceof NamedDataSource) {
+                    id = ((NamedDataSource) dataSource).getDataSourceKey().getId();
+                }
 
-            TransactionFactory transactionFactory = new DynamicDataSourceManagedTransactionFactory();
-            Environment newEnv = new Environment(id, transactionFactory, dataSource);
-            configuration.setEnvironment(newEnv);
+                TransactionFactory transactionFactory = new DynamicDataSourceManagedTransactionFactory();
+                Environment newEnv = new Environment(id, transactionFactory, dataSource);
+                configuration.setEnvironment(newEnv);
+            }
         }
     }
 }
diff --git a/sqlhelper-mybatisplus_2x-spring-boot-starter/src/main/java/com/jn/sqlhelper/mybatisplus2x/spring/boot/autoconfigure/DynamicDataSourceTransactionFactoryCustomizer.java b/sqlhelper-mybatisplus_2x-spring-boot-starter/src/main/java/com/jn/sqlhelper/mybatisplus2x/spring/boot/autoconfigure/DynamicDataSourceTransactionFactoryCustomizer.java
index 8bc900e2c..af2536c8f 100644
--- a/sqlhelper-mybatisplus_2x-spring-boot-starter/src/main/java/com/jn/sqlhelper/mybatisplus2x/spring/boot/autoconfigure/DynamicDataSourceTransactionFactoryCustomizer.java
+++ b/sqlhelper-mybatisplus_2x-spring-boot-starter/src/main/java/com/jn/sqlhelper/mybatisplus2x/spring/boot/autoconfigure/DynamicDataSourceTransactionFactoryCustomizer.java
@@ -39,15 +39,18 @@ public class DynamicDataSourceTransactionFactoryCustomizer implements Configurat
     public void customize(Configuration configuration) {
         Environment oldEnv = configuration.getEnvironment();
         if (oldEnv != null) {
-            String id = oldEnv.getId();
-            DataSource dataSource = oldEnv.getDataSource();
-            if (dataSource instanceof NamedDataSource) {
-                id = ((NamedDataSource) dataSource).getDataSourceKey().getId();
-            }
+            boolean replaceIt = oldEnv.getTransactionFactory() == null || !(oldEnv.getTransactionFactory() instanceof DynamicDataSourceManagedTransactionFactory);
+            if(replaceIt) {
+                String id = oldEnv.getId();
+                DataSource dataSource = oldEnv.getDataSource();
+                if (dataSource instanceof NamedDataSource) {
+                    id = ((NamedDataSource) dataSource).getDataSourceKey().getId();
+                }
 
-            TransactionFactory transactionFactory = new DynamicDataSourceManagedTransactionFactory();
-            Environment newEnv = new Environment(id, transactionFactory, dataSource);
-            configuration.setEnvironment(newEnv);
+                TransactionFactory transactionFactory = new DynamicDataSourceManagedTransactionFactory();
+                Environment newEnv = new Environment(id, transactionFactory, dataSource);
+                configuration.setEnvironment(newEnv);
+            }
         }
     }
 }
diff --git a/sqlhelper-tkmapper-spring-boot-starter/src/main/java/com/jn/sqlhelper/tkmapper/spring/boot/autoconfigure/DynamicDataSourceTransactionFactoryCustomizer.java b/sqlhelper-tkmapper-spring-boot-starter/src/main/java/com/jn/sqlhelper/tkmapper/spring/boot/autoconfigure/DynamicDataSourceTransactionFactoryCustomizer.java
index fc25b86e9..f090e0724 100644
--- a/sqlhelper-tkmapper-spring-boot-starter/src/main/java/com/jn/sqlhelper/tkmapper/spring/boot/autoconfigure/DynamicDataSourceTransactionFactoryCustomizer.java
+++ b/sqlhelper-tkmapper-spring-boot-starter/src/main/java/com/jn/sqlhelper/tkmapper/spring/boot/autoconfigure/DynamicDataSourceTransactionFactoryCustomizer.java
@@ -40,15 +40,18 @@ public class DynamicDataSourceTransactionFactoryCustomizer implements Configurat
     public void customize(Configuration configuration) {
         Environment oldEnv = configuration.getEnvironment();
         if (oldEnv != null) {
-            String id = oldEnv.getId();
-            DataSource dataSource = oldEnv.getDataSource();
-            if (dataSource instanceof NamedDataSource) {
-                id = ((NamedDataSource) dataSource).getDataSourceKey().getId();
-            }
+            boolean replaceIt = oldEnv.getTransactionFactory() == null || !(oldEnv.getTransactionFactory() instanceof DynamicDataSourceManagedTransactionFactory);
+            if (replaceIt) {
+                String id = oldEnv.getId();
+                DataSource dataSource = oldEnv.getDataSource();
+                if (dataSource instanceof NamedDataSource) {
+                    id = ((NamedDataSource) dataSource).getDataSourceKey().getId();
+                }
 
-            TransactionFactory transactionFactory = new DynamicDataSourceManagedTransactionFactory();
-            Environment newEnv = new Environment(id, transactionFactory, dataSource);
-            configuration.setEnvironment(newEnv);
+                TransactionFactory transactionFactory = new DynamicDataSourceManagedTransactionFactory();
+                Environment newEnv = new Environment(id, transactionFactory, dataSource);
+                configuration.setEnvironment(newEnv);
+            }
         }
     }
 }