diff --git a/pom.xml b/pom.xml
index 6adc256b20..ed24d70462 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>com.alibaba</groupId>
 	<artifactId>druid</artifactId>
-	<version>1.1.7-preview_0</version>
+	<version>1.1.7-preview_9</version>
 
 	<packaging>jar</packaging>
 	<name>druid</name>
@@ -14,6 +14,7 @@
 	<properties>
 		<spring.version>4.2.5.RELEASE</spring.version>
 		<junit.version>4.12</junit.version>
+		<jmh.version>1.19</jmh.version>
 
 		<gpg.skip>true</gpg.skip>
 		<javadoc.skip>true</javadoc.skip>
@@ -462,7 +463,7 @@
 		<dependency>
 			<groupId>mysql</groupId>
 			<artifactId>mysql-connector-java</artifactId>
-			<version>6.0.6</version>
+			<version>5.1.45</version>
 			<scope>provided</scope>
 		</dependency>
 		<dependency>
@@ -716,5 +717,18 @@
 			<scope>test</scope>
 		</dependency>
 
+		<dependency>
+			<groupId>org.openjdk.jmh</groupId>
+			<artifactId>jmh-core</artifactId>
+			<version>${jmh.version}</version>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.openjdk.jmh</groupId>
+			<artifactId>jmh-generator-annprocess</artifactId>
+			<version>${jmh.version}</version>
+			<scope>test</scope>
+		</dependency>
+
 	</dependencies>
 </project>
diff --git a/src/main/java/com/alibaba/druid/pool/DruidConnectionHolder.java b/src/main/java/com/alibaba/druid/pool/DruidConnectionHolder.java
index b5ec95c3b6..912b0ce1be 100644
--- a/src/main/java/com/alibaba/druid/pool/DruidConnectionHolder.java
+++ b/src/main/java/com/alibaba/druid/pool/DruidConnectionHolder.java
@@ -109,6 +109,7 @@ public final class DruidConnectionHolder {
             if (JdbcConstants.SYBASE.equals(dataSource.dbType) //
                 || JdbcConstants.DB2.equals(dataSource.dbType) //
                 || JdbcConstants.HIVE.equals(dataSource.dbType) //
+                || JdbcConstants.ODPS.equals(dataSource.dbType) //
             ) {
                 initUnderlyHoldability = false;
             }