upgrade to 3.0.0.M2
diff --git a/pom.xml b/pom.xml
index 04060df..80af3d2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -2,7 +2,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.shardingsphere</groupId>
     <artifactId>sharding-sphere-example</artifactId>
-    <version>3.0.0.M2-SNAPSHOT</version>
+    <version>3.0.0.M2</version>
     <packaging>pom</packaging>
     
     <modules>
@@ -17,7 +17,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.build.locale>zh_CN</project.build.locale>
         
-        <sharding-sphere.version>3.0.0.M2-SNAPSHOT</sharding-sphere.version>
+        <sharding-sphere.version>3.0.0.M2</sharding-sphere.version>
         
         <spring-framework.version>4.3.6.RELEASE</spring-framework.version>
         <spring-boot.version>1.5.0.RELEASE</spring-boot.version>
diff --git a/sharding-jdbc-example/pom.xml b/sharding-jdbc-example/pom.xml
index 8638b4c..90476d9 100644
--- a/sharding-jdbc-example/pom.xml
+++ b/sharding-jdbc-example/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>sharding-sphere-example</artifactId>
         <groupId>io.shardingsphere</groupId>
-        <version>3.0.0.M2-SNAPSHOT</version>
+        <version>3.0.0.M2</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <artifactId>sharding-jdbc-example</artifactId>
diff --git a/sharding-jdbc-example/raw-jdbc-example/pom.xml b/sharding-jdbc-example/raw-jdbc-example/pom.xml
index af417bd..d552d8c 100644
--- a/sharding-jdbc-example/raw-jdbc-example/pom.xml
+++ b/sharding-jdbc-example/raw-jdbc-example/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <groupId>io.shardingsphere</groupId>
         <artifactId>sharding-jdbc-example</artifactId>
-        <version>3.0.0.M2-SNAPSHOT</version>
+        <version>3.0.0.M2</version>
     </parent>
     <artifactId>raw-jdbc-example</artifactId>
     
diff --git a/sharding-jdbc-example/spring-boot-example/pom.xml b/sharding-jdbc-example/spring-boot-example/pom.xml
index aa0176b..f0f2d9d 100644
--- a/sharding-jdbc-example/spring-boot-example/pom.xml
+++ b/sharding-jdbc-example/spring-boot-example/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <groupId>io.shardingsphere</groupId>
         <artifactId>sharding-jdbc-example</artifactId>
-        <version>3.0.0.M2-SNAPSHOT</version>
+        <version>3.0.0.M2</version>
     </parent>
     <artifactId>spring-boot-example</artifactId>
     <packaging>pom</packaging>
diff --git a/sharding-jdbc-example/spring-boot-example/spring-boot-data-jpa-example/pom.xml b/sharding-jdbc-example/spring-boot-example/spring-boot-data-jpa-example/pom.xml
index 6b9bb73..13772bc 100644
--- a/sharding-jdbc-example/spring-boot-example/spring-boot-data-jpa-example/pom.xml
+++ b/sharding-jdbc-example/spring-boot-example/spring-boot-data-jpa-example/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <groupId>io.shardingsphere</groupId>
         <artifactId>spring-boot-example</artifactId>
-        <version>3.0.0.M2-SNAPSHOT</version>
+        <version>3.0.0.M2</version>
     </parent>
     <artifactId>spring-boot-data-jpa-example</artifactId>
     
diff --git a/sharding-jdbc-example/spring-boot-example/spring-boot-data-mybatis-example/pom.xml b/sharding-jdbc-example/spring-boot-example/spring-boot-data-mybatis-example/pom.xml
index da0b8db..9b1970b 100644
--- a/sharding-jdbc-example/spring-boot-example/spring-boot-data-mybatis-example/pom.xml
+++ b/sharding-jdbc-example/spring-boot-example/spring-boot-data-mybatis-example/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <groupId>io.shardingsphere</groupId>
         <artifactId>spring-boot-example</artifactId>
-        <version>3.0.0.M2-SNAPSHOT</version>
+        <version>3.0.0.M2</version>
     </parent>
     <artifactId>spring-boot-data-mybatis-example</artifactId>
     
diff --git a/sharding-jdbc-example/spring-namespace-example/pom.xml b/sharding-jdbc-example/spring-namespace-example/pom.xml
index 9b53162..ea500a5 100644
--- a/sharding-jdbc-example/spring-namespace-example/pom.xml
+++ b/sharding-jdbc-example/spring-namespace-example/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <groupId>io.shardingsphere</groupId>
         <artifactId>sharding-jdbc-example</artifactId>
-        <version>3.0.0.M2-SNAPSHOT</version>
+        <version>3.0.0.M2</version>
     </parent>
     <artifactId>spring-namespace-example</artifactId>
     <packaging>pom</packaging>
diff --git a/sharding-jdbc-example/spring-namespace-example/spring-namespace-jpa-example/pom.xml b/sharding-jdbc-example/spring-namespace-example/spring-namespace-jpa-example/pom.xml
index e120f80..27766fa 100644
--- a/sharding-jdbc-example/spring-namespace-example/spring-namespace-jpa-example/pom.xml
+++ b/sharding-jdbc-example/spring-namespace-example/spring-namespace-jpa-example/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <groupId>io.shardingsphere</groupId>
         <artifactId>spring-namespace-example</artifactId>
-        <version>3.0.0.M2-SNAPSHOT</version>
+        <version>3.0.0.M2</version>
     </parent>
     <artifactId>spring-namespace-jpa-example</artifactId>
     
diff --git a/sharding-jdbc-example/spring-namespace-example/spring-namespace-mybatis-example/pom.xml b/sharding-jdbc-example/spring-namespace-example/spring-namespace-mybatis-example/pom.xml
index d08b490..b1356b0 100644
--- a/sharding-jdbc-example/spring-namespace-example/spring-namespace-mybatis-example/pom.xml
+++ b/sharding-jdbc-example/spring-namespace-example/spring-namespace-mybatis-example/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <groupId>io.shardingsphere</groupId>
         <artifactId>spring-namespace-example</artifactId>
-        <version>3.0.0.M2-SNAPSHOT</version>
+        <version>3.0.0.M2</version>
     </parent>
     <artifactId>spring-namespace-mybatis-example</artifactId>
     
diff --git a/sharding-jdbc-transaction-example/pom.xml b/sharding-jdbc-transaction-example/pom.xml
index 3127923..08344a6 100644
--- a/sharding-jdbc-transaction-example/pom.xml
+++ b/sharding-jdbc-transaction-example/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <groupId>io.shardingsphere</groupId>
         <artifactId>sharding-sphere-example</artifactId>
-        <version>3.0.0.M2-SNAPSHOT</version>
+        <version>3.0.0.M2</version>
     </parent>
     <artifactId>sharding-jdbc-transaction-example</artifactId>
     
diff --git a/sharding-proxy-example/pom.xml b/sharding-proxy-example/pom.xml
index 6487ae7..c6e305a 100644
--- a/sharding-proxy-example/pom.xml
+++ b/sharding-proxy-example/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>io.shardingsphere</groupId>
         <artifactId>sharding-sphere-example</artifactId>
-        <version>3.0.0.M2-SNAPSHOT</version>
+        <version>3.0.0.M2</version>
     </parent>
     <artifactId>sharding-proxy-example</artifactId>