diff --git a/client-adapter/launcher/pom.xml b/client-adapter/launcher/pom.xml
index df31b8c8..6df096e8 100644
--- a/client-adapter/launcher/pom.xml
+++ b/client-adapter/launcher/pom.xml
@@ -67,6 +67,23 @@
             <version>1.1.1</version>
         </dependency>
 
+        <!-- jdbc -->
+        <dependency>
+            <groupId>org.postgresql</groupId>
+            <artifactId>postgresql</artifactId>
+            <version>42.1.4</version>
+        </dependency>
+        <dependency>
+            <groupId>com.oracle</groupId>
+            <artifactId>ojdbc6</artifactId>
+            <version>11.2.0.3</version>
+        </dependency>
+        <dependency>
+            <groupId>com.microsoft.sqlserver</groupId>
+            <artifactId>mssql-jdbc</artifactId>
+            <version>7.0.0.jre8</version>
+        </dependency>
+
         <!-- outer adapter jar with dependencies-->
         <dependency>
             <groupId>com.alibaba.otter</groupId>
diff --git a/client-adapter/pom.xml b/client-adapter/pom.xml
index 3c1dcb55..2f12209c 100644
--- a/client-adapter/pom.xml
+++ b/client-adapter/pom.xml
@@ -25,6 +25,19 @@
         <module>rdb</module>
     </modules>
 
+    <repositories>
+        <repository>
+            <id>central</id>
+            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
+            <releases>
+                <enabled>true</enabled>
+            </releases>
+            <snapshots>
+                <enabled>false</enabled>
+            </snapshots>
+        </repository>
+    </repositories>
+
     <build>
         <plugins>
             <plugin>
diff --git a/client-adapter/rdb/pom.xml b/client-adapter/rdb/pom.xml
index 120aa5e1..36881768 100644
--- a/client-adapter/rdb/pom.xml
+++ b/client-adapter/rdb/pom.xml
@@ -27,30 +27,24 @@
             <scope>provided</scope>
         </dependency>
 
-        <!--<dependency>-->
-            <!--<groupId>mysql</groupId>-->
-            <!--<artifactId>mysql-connector-java</artifactId>-->
-            <!--<version>5.1.40</version>-->
-            <!--<scope>test</scope>-->
-        <!--</dependency>-->
-        <!--<dependency>-->
-            <!--<groupId>org.postgresql</groupId>-->
-            <!--<artifactId>postgresql</artifactId>-->
-            <!--<version>42.1.4</version>-->
-            <!--<scope>test</scope>-->
-        <!--</dependency>-->
-        <!--<dependency>-->
-            <!--<groupId>com.oracle</groupId>-->
-            <!--<artifactId>ojdbc6</artifactId>-->
-            <!--<version>11.2.0.4.0-atlassian-hosted</version>-->
-            <!--<scope>test</scope>-->
-        <!--</dependency>-->
-        <!--<dependency>-->
-            <!--<groupId>com.microsoft.sqlserver</groupId>-->
-            <!--<artifactId>mssql-jdbc</artifactId>-->
-            <!--<version>7.0.0.jre8</version>-->
-            <!--<scope>test</scope>-->
-        <!--</dependency>-->
+        <dependency>
+            <groupId>org.postgresql</groupId>
+            <artifactId>postgresql</artifactId>
+            <version>42.1.4</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.oracle</groupId>
+            <artifactId>ojdbc6</artifactId>
+            <version>11.2.0.3</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.microsoft.sqlserver</groupId>
+            <artifactId>mssql-jdbc</artifactId>
+            <version>7.0.0.jre8</version>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>